Order this document by MC34216A/D ! PROGRAMMABLE TELEPHONE LINE INTERFACE CIRCUIT WITH LOUDSPEAKER AMPLIFIER SEMICONDUCTOR TECHNICAL DATA The MC34216A is developed for use in telephone applications where, besides the standard telephone functions, the group listening–in feature is also required. In cooperation with a microcontroller, the circuit performs all basic telephone functions including DTMF generation and pulse–dialing. The listening–in part includes a loudspeaker amplifier, an anti–howling circuit and a strong supply. In combination with the TCA3385, the ringing is performed via the loudspeaker. • Programmable DC Mask, for France, U.K., and Voltage Regulated Countries • DC Mask for France and U.K. (MC34216ADWF) • • • • • • 28 1 Programmable Volume for Listening–In and Ringing DW, DWF SUFFIX PLASTIC PACKAGE CASE 751F Small Amount of External Components On–Chip DTMF and Ring Signal Generator Efficient Supply Point for Loudspeaker Amplifier and Peripherals Programmable Modes for Speakerphone, Answering Machine, Fax and Modem Applications Pilot and Idle Tones Provide Extra Phone Features Simplified Block Diagram Line + DC and AC Termination Handset Earpiece Handset MIcrophone Ear DC Mask Generation AC Termination 2–4 Wire Conversion Supply Stabilizer Line Driver Mic PIN CONNECTIONS AHO1 1 28 AGC AHO2 2 27 RXO2 MTF 3 26 RXO1 MTC 4 25 RXI AGnd 5 24 LPI TXI 6 23 LPO Mic 7 22 Gnd LAO 8 LAI 9 HYN 10 NDC 11 21 VCC 20 Iref 19 RS 18 Clk CM 12 17 D/HS IMP 13 16 Osc SAO 14 15 SAI Anti– Howling Base Loudspeaker LSP (Top View) DTMF and Ring Generator Microcontroller Interface ORDERING INFORMATION Line – This device contains 6,507 active transistors. This document contains information on a new product. Specifications and information herein are subject to change without notice. MOTOROLA ANALOG IC DEVICE DATA Device Operating Temperature Range MC34216ADW MC34216ADWF TA = 0° to +70°C Package SO–28L SO–28L Motorola, Inc. 1996 1 MC34216A FEATURES Line Driver and Supply • DC and AC Termination of the Line • • • • • Programmable DC Mask: France, U.K., Startup, Low Voltage (MC34216ADW) Programmable DC Mask: France, U.K., Startup (MC34216ADWF) Current Protection Adjustable Set Impedance for Resistive and Complex Termination Efficient Supply Point for Loudspeaker Amplifier and Peripherals Handset Operation • Transmit and Receive Amplifiers • • • • • • Adjustable Sidetone Network Line Length AGC Microphone and Earpiece Mute Earpiece Gain Increase Switch Microphone Squelch Function Transmit Amplifier Soft Clipping Dialing and Ringing • Generates DTMF, Pilot Tones and Ring Signal • • • • • Interrupter Driver for Pulse–Dialing Low Current While Pulse–Dialing Optimized for Ringing via Loudspeaker Programmable Ring Melodies Uses Inexpensive 500 kHz Resonator Loudspeaking Facility • Integrated Loudspeaker Amplifier • • • • Peak–to–Peak Limiter Prevents Distortion Programmable Volume Anti–Howling Circuitry for Group Listening–In Interfacing for Handsfree Conversation Application Areas • Corded Telephony with Group Listening–In • • • Cordless Telephony Base Station with Group Listening–In Telephones with Answering Machines Fax, Intercom, Modem MAXIMUM RATINGS Rating Maximum Junction Temperature Storage Temperature Range Symbol Min Max Unit TJ – +150 °C Tstg – 65 +150 °C NOTES: 1. Devices should not be operated at or outside these values. The “Recommended Operating Limits” provide for actual device operation. 2. ESD data available upon request. ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ RECOMMENDED OPERATING CONDITIONS Characteristic Symbol Min Typ Oscillator Frequency @ Pin 16 fosc 495 Operating Temperature Range TA 0 2 Max Unit 500 505 kHz – +70 °C MOTOROLA ANALOG IC DEVICE DATA MC34216A ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ DC ELECTRICAL CHARACTERISTICS (TA = 25°C) Characteristic Symbol Min Typ Max Unit VOLTAGE REGULATOR Regulated Supply at Pin 21 Startup Mode ICC = 10 mA ICC = 100 mA France and U.K. ICC = 10 mA ICC = 50 mA Low Voltage Mode (MC34216ADW Only) ICC = 10 mA ICC = 100 mA Vdc VCC1 4.25 4.40 4.50 4.65 4.75 4.90 VCC2 4.25 4.30 4.50 4.55 4.75 4.85 VCC3 3.60 3.75 3.90 4.05 4.20 4.35 ICC LD – 1.2 – mA VCC5 4.30 – 4.80 Vdc Iref 15.3 16.3 17.3 µA VHSO1 VHSO2 VHSO3 VCC – 1.0 – VCC – 1.0 – – – – 0.4 – Vres(on) Vres(off) Vres(hys) – 3.0 – – – 0.05 0.40 VCC – 0.1 – VRXI VRXO1 VRXO2 Voffset 1.7 1.7 1.7 – – – – – 2.3 2.5 2.5 0.4 VLPI VLPO 1.9 1.9 – – 2.5 2.5 VAHO11 VAHO12 1.15 2.2 – – 1.65 2.8 VAHO21 VAHO22 1.15 – – – 1.65 0.20 VHYN VHYN–LD 2.4 1.4 – – 2.7 1.7 VTXI VMic Ileak 1.7 – – – – – 2.0 0.35 5.5 Vdc I8 I8 –150 150 – 2.1 –110 – 350 2.6 µA VLAO S8 – 110 – 1.6 mV µA/mV VO1 Follower (I2 = 0 µA) VO1 – VO2 VO1 ∆VO 1.1 40 1.18 80 1.3 120 V mV Voltage at IMP (Pin 13) VIMP 2.2 – 2.5 Vdc ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Current Consumption at Pin 21, Bit LD = Hi Regulated Supply in Protection Mode, ICC = 30 mA Reference Current @ Pin 20 LOGIC PINS Hook Status Output (Pin 17) Off–Hook, Iout = – 200 µA On–Hook, Iout = 200 µA Bit LD = 1, Iout = – 200 µA Reset Output (Pin 19) VCC < 3.0 V VCC > 3.25 V Hysteresis Vdc Vdc SPEECH AMPLIFIERS Earpiece Amplifier DC Bias RXI, Pin 25 RXO1, Pin 26 RXO2, Pin 27 RXO1 – RXO2 Offset Loudspeaker Amplifier LPI, Pin 24 LPO, Pin 23 AHO1 (Pin 1) Normal Mode (HPI = 0) Supervision Mode (HPI = 1) Vdc Vdc Vdc AHO2 (Pin 2) Normal Mode (MicM = 1) VCC = 3.5 (MicM = 0) Bias Voltage at HYN (Pin 10) Normal Mode Bit (LD = 1) Microphone Amplifier Bias Voltage @ TXI (Pin 6) Voltage at MIC @ 1.0 mA ( MicP = 1) Leakage @ MIC @ 4.5 V (MicP = 0) LAO (Pin 8) Maximum Current (Source) Maximum Current (Sink) Voltage (LD = 1, I = 100 µA) Driver A8 Slope MOTOROLA ANALOG IC DEVICE DATA Vdc Vdc µA 3 MC34216A ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ DC ELECTRICAL CHARACTERISTICS (continued) (TA = 25°C) Characteristic Symbol Min Typ Max Unit Startup Mode Internal Slope Voltage on SAI (I2C = 5.9 µA) Voltage on SAI (I2D = 7.1 µA) Delta Offset Voltage on SAI (I2E = 38 µA) ri VC VD VE – VD 300 800 – – 380 – – – 460 – 1.5 100 mV/µA mV V mV French Internal Slope Voltage on SAI (I2C = 5.9 µA) Voltage on SAI (I2D = 7.1 µA) Delta Offset Voltage on SAI (I2E = 38 µA) ri VC VD VE – VD 76 280 – – 103 – – – 130 – 460 30 mV/µA mV U.K. Internal Slope Voltage on SAI (I2C = 5.9 µA) Voltage on SAI (I2D = 7.1 µA) Delta Offset Voltage on SAI (I2E = 38 µA) ri VC VD VE – VD 120 420 – – 165 – – – 210 – 675 40 mV/µA mV Low Voltage Mode (MC34216ADW Only) Internal Slope Voltage on SAI (I2C = 15 µA) Voltage on SAI (I2D = 17 µA) Delta Offset Voltage on SAI (I2E = 20 µA) ri VC VD VE – VD 95 900 – – 129 – – – 165 – 1.5 100 mV/µA mV Vdc mV Overvoltage Protection Threshold (VLAI – VSAO) Iprot = 60 µA, ICC = 70 mA Vclamp1 485 550 615 mV Protection Voltage Level (VLAI – VSAO) Iprot = 60 µA Vclamp2 370 410 450 mV Symbol Min Typ Max Unit French and U.K. Maximum Transmit Gain (I2 = 5.6 µA) Line Length Regulation (I2 = 27.5 µA) Gain in Protection Mode (I2 = 29.5 µA) Kµ0 ∆Kµ Kµp 13.5 5.0 13.5 14.5 6.0 14.5 15.5 7.0 15.5 Low Voltage Mode (MC34216ADW Only) Maximum Transmit Gain (I2 = 3.5 µA) Line Length Regulation (I2 = 7.7 µA) Gain in Protection Mode (I2 = 7.7 µA) Kµ0 ∆Kµ Kµp 13.5 4.7 13.5 14.5 6.0 14.5 15.5 7.3 15.5 ∆Kmute 60 – – dB French Maximum Internal Transconductance (I2 = 5.6 µA) Line Length Regulation (I2 = 26 µA) Protection Mode (I2 = 26 µA) Ge0 ∆Ge Gep 203 5.0 203 230 6.0 230 258 7.0 258 µA/V dB µA/V U.K. Maximum Internal Transconductance (I2 = 5.6 µA) Line Length Regulation (I2 = 26 µA) Protection Mode (I2 = 26 µA) Ge0 ∆Ge Gep 203 5.0 203 230 6.0 230 258 7.0 258 µA/V dB µA/V Low Voltage Mode (MC34216ADW Only) Maximum Internal Transconductance (I2 = 3.5 µA) Line Length Regulation (I2 = 7.9 µA) Protection Mode (I2 = 7.9 µA) Ge0 ∆Ge Gep 183 4.7 183 210 6.0 210 241 7.3 241 µA/V dB µA/V ∆Ge mute 60 – – dB ∆Ge1 4.6 5.6 6.6 dB DC MASK CHARACTERISTICS AC ELECTRICAL CHARACTERISTICS (TA = 25°C) Characteristic TRANSMIT MODE Gain Reduction when Microphone is Muted dB dB RECEIVE MODE Earpiece Gain Reduction when Muted Earpiece Gain Variation (EA Bit Changed to 1) 4 MOTOROLA ANALOG IC DEVICE DATA MC34216A ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ AC ELECTRICAL CHARACTERISTICS (continued) (TA = 25°C) Characteristic Symbol Min Typ Max Unit French and U.K. Transmit Gain (I2 = 2.0 µA) Variation with Line Length (I2 = 27 µA) KPABX ∆KPABX 11.4 –0.5 12.5 – 13.6 0.5 Low Voltage Mode (MC34216ADW Only) Transmit Gain (I2 = 2.0 µA) Variation with Line Length (I2 = 20 µA) Variation with Line Current (ICC = 16 mA) Variation with Line Current (ICC = 7.0 mA) KPABX ∆KPABX ∆KPABX1 ∆KPABX2 11.5 –0.5 –0.5 –2.0 12.5 – 0 0 13.6 0.5 0.5 2.0 French Internal Transconductance (I2 = 2.0 µA) Variation with Line Length (I2 = 27 µA) GPABX ∆GPABX 157 –0.5 180 – 207 0.5 µA/V dB U.K. Internal Transconductance (I2 = 2.0 µA) Variation with Line Length (I2 = 27 µA) GPABX ∆GPABX 157 –0.5 180 – 207 0.5 µA/V dB Low Voltage Mode (MC34216ADW Only) Internal Transconductance (I2 = 2.0 µA) Variation with Line Length (I2 = 20 µA) Variation with Line Current (ICC = 16 mA) Variation with Line Current (ICC = 7.0 mA) GPABX ∆GPABX ∆GPABX1 ∆GPABX2 152 –0.5 –0.5 –2.0 175 – – – 200 0.5 0.5 2.0 µA/V dB TRANSMIT PABX MODE dB dB RECEIVE PABX MODE DISTORTION French and U.K. French Transmit (I2 = 10–30 µA) Receive VE = 700 mV (I2 = 10 µA) VE = 1350 mV THDT THDR – – – – – – 3.0 3.0 5.0 % Low Voltage (MC34216ADW Only) Transmit (I2 = 10–20 µA) Receive VE = 700 mV (I2 = 20 µA) VE = 1350 mV THDT THDR – – – – – – 3.0 3.0 5.0 % NOTE: VE is the differential earpiece voltage across Pins 26 and 27. OTHER ELECTRICAL CHARACTERISTICS (TA = 25°C) Characteristic Symbol Min Typ Max Unit LINE CURRENT AGC ( RLS = 25 Ω, G0 = G1 = G2 = 1, VLS = 2.0 Vpp, French, U.K., and LV Masks) Line Current for which AGC is Active IAGC(on) – – 19 mA VCC with Current AGC “On” (ICC = 13 mA) VCC AGC VCC – 5.0% VCC – Vdc Line Current for which AGC is Inactive IAGC(off) 21 – – mA 1.6 1.2 1.7 1.3 1.8 1.5 VCC – 1.2 0.85 VCC – 1.0 1.0 – – VCC – 1.9 0.72 VCC – 1.6 0.85 – – ∆AGC 1.0 1.25 1.50 dB Internal Resistor RT Muted (G2, G1, G0 = 000) Maximum Gain (G2, G1, G0 = 111) RT000 RT111 – 40 10 60 18 80 Ω kΩ Attenuation Step ∆GLS 3.5 4.5 5.5 dB PEAK–TO–PEAK AGC (RLS = 25 Ω, C25 = 220 nF, G0 = G1 = G2 = 1, ICC = 40 mA) DC Level at Pin 28 AGC “Off” AGC “On” Vdc VAGC(off) VAGC(on) AGC Upper Threshold France and U.K. Low Voltage (MC34216ADW Only) VLS(up) AGC Lower Threshold France and U.K. Low Voltage (MC34216ADW Only) VLS(low) 1 Step AGC Gain Variation (LSB) Vrms Vrms ANTI–HOWLING MONITORING RECEIVE GAIN MOTOROLA ANALOG IC DEVICE DATA 5 MC34216A ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ OTHER ELECTRICAL CHARACTERISTICS (continued) (TA = 25°C) Characteristic Symbol Min Typ Max Unit RINGING MODE REGULATION Regulated VCC (RLS = ∞, ICC = 10 mA) VCCR 5.15 5.5 5.8 Vdc Current Consumption @ VCC = 3.4 V, RLS = ∞ IcR – 2.0 2.6 mA Ringing Regulator Slope gR 4.8 6.3 7.8 µA/V IR Peak 2.0 2.5 3.0 µA VCC0 – 3.8 – Vdc ∆Kµmth1 ∆Kµmth2 – –0.5 7.0 0 – 0.5 ∆GLSmth1 ∆GLSmth2 –0.5 – 0 7.0 0.5 – VAHO1 2.2 – 2.8 Vdc Gsp 30 32 34 dB Peak Current @ VCC = 4.2 V Minimum VCC MICROPHONE THRESHOLD Transmit Gain Variation (Mth(on)/Mth(off)) Iu = 33 nA Iu = 110 nA LS Gain Variation (Mth(on)/Mth(off)) Iu = 33 nA Iu = 110 nA dB dB SPEAKERPHONE MODE (G2, G1, G0 = 111, Sp Bit = 1) DC Level on Pin 1 Speakerphone Gain MONITORING SIGNAL IN LOUDSPEAKER (R/S = 0, G2, G1, G0 = 111) DTMF Level SP = 0 Low Frequency High Frequency SP = 1 Low Frequency High Frequency mV VLS–L1 VLS–H1 – – 200 250 – – VLS–L2 VLS–H2 – – 700 900 – – Pilot Tone (PT = 1) SP = 0 SP = 1 VLS–P1 VLS–P2 – – 185 560 – – Idle Tone (IT = 1) SP = 0 SP = 1 VLS–I1 VLS–I2 – – 145 700 – – Ring Tone (RT = 1) SP = 0 SP = 1 VLS–R1 VLS–R2 – – 1100 1400 – – DTMF Level Low Frequency High Frequency VRXO–L VRXO–H – – 12 15 – – Pilot Tone (PT = 1) VRXO–P – 8.0 – mV Idle Tone (IT = 1) VRXO–I – 6.0 – mV ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ mV mV mV MONITORING SIGNAL IN EARPIECE (Single Ended) mV IDLE TONE ON LINE Idle Tone Level (MFC01 = 11, MFO123 = 000) IIDLE0 400 550 700 nA IIDLE(step) – 62 – nA Level on LAI (Pin 9, ICC = 20 to 70 mA, French and U.K. Masks) MFO123 = 1111, High Frequency Group MFO123 = 0111, High Frequency Group MFO123 = 0000, Low Frequency Group IDTMF15 IDTMF12 IDTMF0 1124 988 373 1336 1175 444 1586 1397 528 High/Low Frequency Pre–Emphasis GDTMF 1.0 2.0 3.0 Step Size DTMF LEVELS nA dB NOTE: In low voltage mode, above levels must be reduced by 0.5 dB. 6 MOTOROLA ANALOG IC DEVICE DATA ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ MC34216A DTMF FREQUENCIES Characteristic Low Group Frequencies High Group Frequencies Min Typ Max Unit DTMF Std % Error 689.4 696.4 703.4 Hz 697 –0.09 761.5 769.2 776.9 Hz 770 –0.10 844.7 853.2 861.7 Hz 852 0.14 930.5 939.9 949.3 Hz 941 –0.11 1195.6 1207.7 1219.8 Hz 1209 –0.11 1323.5 1336.9 1350.3 Hz 1336 0.07 1464.5 1479.3 1494.1 Hz 1477 0.16 1617.7 1634 1650.3 Hz 1633 0.06 NOTE: Minimum values based on fosc = 495 kHz. Maximum values based on fosc = 505 kHz. TEMPERATURE SPECIFICATIONS (TA = 65°C) Characteristic Symbol Min Max Unit DTMFD – –27 dB VCC2 in FR Mode @ ICC = 50 mA VCC2 4.15 5.0 V VCCR @ ICC = 10 mA, RLS = ∞ VCCR 5.0 6.0 V VC on Pin SAI in FR Mode VC 220 460 mV Ri Slope in FR Mode Ri 65 155 kΩ RT111 35 85 kΩ DTMF Distortion Level on Pin LAI, Delta Levels (F = Hi Freq – f = 697 Hz) RT111 Resistor on LS in FR Mode Kµ0 in FR Mode Kµ0 13 16 dB Ge0 in FR Mode Ge0 170 270 µA/V Vresoff 3.0 3.25 V Reset Off @ VCC = 3.25 V PIN FUNCTION DESCRIPTION Pin Symbol 1 AHO1 Anti–Howling Timing, Speakerphone Input 2 AHO2 Anti–Howling Timing, Low Voltage Line Driver Disable 3 MTF Microphone Threshold Filtering 4 MTC Microphone Threshold Timing 5 AGnd Small Signal Ground 6 TXI Microphone Amplifier Input 7 Mic Microphone Bias Current Sink 8 LAO Line Driver Amplifier Output 9 LAI Line Driver Amplifier Input 10 HYN Hybrid Network Input 11 NDC Noise Decoupling 12 CM DC Mask Signal Filtering 13 IMP Reference Voltage 14 SAO Line Current Sense Amplifier Output 15 SAI Line Current Sense Amplifier Input 16 Osc Oscillator Input. Connect to 500 kHz Resonator 17 D/HS Data Input, Hookstatus Output 18 Clk Clock Input 19 RS Reset Output 20 Iref Reference Current MOTOROLA ANALOG IC DEVICE DATA Description 7 MC34216A PIN FUNCTION DESCRIPTION (continued) Pin Symbol Description 21 VCC Supply Voltage 22 Gnd Large Signal Ground 23 LPO Loudspeaker Amplifier Output 24 LPI Loudspeaker Amplifier Input 25 RXI Receive Amplifier Input 26 RXO1 Receive Amplifier Output 27 RXO2 Receive Amplifier Output 28 AGC Loudspeaker AGC Timing CIRCUIT DESCRIPTION Concept With the MC34216A, a microcontroller and a switched mode power supply, a telephone set with listening–in function and ringing via loudspeaker can be built as shown in Figure 1. In off–hook position, the application is in speech mode. The line current flows through transistor T2 and supplies the application at the supply point VCC which is stabilized by the MC34216A. The Vline, Iline characteristic is programmed by the microcontroller and adjusted by the external components Z0, Z1, Z21 and R1 which are in a regulator loop, acting on transistor T2. The ac impedance is generated in a similar way. Handset and loudspeaker can be connected directly to the MC34216A to perform handset and listening–in operation. Via the bus, the microcontroller programs the MC34216A to perform the DTMF/pulse–dialing and supervise the device. The user keyboard has to be connected to the microcontroller. In on–hook position, the SMPS supplies the application in presence of a ringing signal. The microcontroller programs the MC34216A and a ringing melody can be generated via the loudspeaker. The block diagram of the MC34216A (see Figure 2), shows the basic blocks of the device plus the essential external components. Figure 1. Telephone Concept with MC34216A Hookswitch Z1 Z0 Z21 T2 VCC A/B Handset Loudspeaker 8 MC34216A R1 Micro SMPS Gnd MOTOROLA ANALOG IC DEVICE DATA MC34216A Figure 2. Block Diagram of the MC34216A with Essential Components Line + To IMP To SAI Z1 C17 Z0 R20 To IMP C16 HYN 12 LAI R12 Iref IMP 13 20 9 R6 R9 DC Mask Generation AC Termination 2–4 Wire Conversion Line Length AGC Protection Ear 27 RXI Mute, AGC Supply– Stabilizer References Ring– Regulator MC34216A LAO Line Driver 8 Mic 7 Anti–Howling Microphone Threshold Volume LPO 23 C7 T3 RS DTMF/Tone and Ring Generator LSP R30 LPI Micro– Interface Clock Hook–Detect 19 Clk 18 D/HS To Micro– controller 17 24 Speaker 5 Gnd Mute, AGC Mic C24 21 AGnd 22 25 C5 TXI 6 Handset Microphone T2 VCC RXO1 26 RXO2 Handset Earpiece NDC SAO 11 14 CM 10 C20 Z21 C12 R28 28 C21 AGC 1 AHO1 2 C26 AHO2 3 C27 MTF C28 4 MTC SAI 15 C29 16 Osc R1 X1 C25 To IMP Line – DC CHARACTERISTICS AND STARTUP Figure 3. General Form of the DC Mask of the MC34216A adjustments. The software adjustments make it possible to program the 4 different basic masks: France, United Kingdom, Low Voltage and Startup. The hardware adjustments can be used for fine–tuning. The adjustment possibilities will be discussed below with the aid of the block diagram of Figure 4. In Region 1, the transfer of the amplifier G at the HYN input equals zero. The voltage difference between SAO and SAI will equal VO1. The slope RE1 of the Vline, Iline characteristic will equal: V line 4 VLP 3 R VLK 2 VLC 1 Iline 0 ILC ILP ILK IVLP Region 1: Startup, Low Line Current, High Slope Region 2: Mid Range Line Current, Small Slope Region 3: High Line Current, High Slope Region 4: Overload Protection The MC34216A offers the possibility to adjust the dc characteristics of all 4 regions via both software and hardware MOTOROLA ANALOG IC DEVICE DATA E1 ǒ Ǔ Z0 + R1 x 1 ) Z21 In Region 2, the output current of the amplifier G will be proportional to the input current. As a result, the voltage between SAO and SAI will increase with the line voltage. Speech signals on the line are of no influence on this because they are filtered out via capacitor C16. The slope RE2 of the Vline, Iline characteristic will equal: R ȡȧ Ȣ + R1 x 1 ) Ri E2 1 Z21 Z0 Z1 ) ȣȧ Ȥ In Region 3, the output current of the amplifier G is kept constant. As a result, the slope in Region 3 will equal the slope of Region 1. 9 MC34216A Figure 4. DC Part of the Block Diagram of the MC34216A T2 Line + C16 IMP + Z1 Z0 2.4 V CM + R5 2VBE ≈ 1.4 V I2 G + Z21 + HYN NDC VCC LAI + SAO LAO + C12 RX VO1 SAI + MC34216A + T3 C7 Gnd VO2 R1 Line – The transfer from Region 2 to 3 occurs at the point VLK, ILK, which is calculated: + Z1 x I2CD ) 2VBE ) VCD ) VO2 Z21 x ǒZ1 x I2CD ) 2V Ǔ ) VCD BE ILK + Z0 R1 V ) V D , C With : I2CD + I2C ) I2D , and V + CD When the protection mode is entered, the line current is reduced to a lower value ILP of: VLK and 2V BE [ 1.4 V, 2 V O2 [ 1.1 V 2 When the French or U.K. mask is selected, this transfer takes place for line currents of 30 mA to 40 mA depending on the components settings. With the Startup and Low Voltage mask, the transfer lies outside the normal operating range with line currents of 90 mA or more. In most applications, the transfer from Region 1 to 2 takes place for line currents below 10 mA. With proper settings, Region 4 is only entered during an overload condition. In this mode, the power consumption in the telephone set is limited. In order to detect an overload condition, the voltage between the Pins LAI and SAO is monitored. When the voltage difference is larger than the threshold Vclamp1, the protection is made active. The relation for the line voltage VLP at this point is given as: VLP 10 Z0 + Z21 x V clamp1 ILP + V clamp2 ) ǒ Ǔ V – V O1 O2 R1 When the line voltage becomes smaller than VLP, the overload condition is gone and the MC34216A will leave Region 4. The current drawn from the line by the dc part is used to supply the MC34216A and peripheral circuits. The surplus of current is sunk away by the voltage stabilizer at Pin VCC where a reservoir capacitor is connected. The reference for the circuit is Pin Gnd. Startup of the application is ensured by an internal startup circuit. During the startup, the internal registers of the MC34216A are reset, and the reset Pin RS goes high. This signals is meant to indicate to the microcontroller that the programming of the MC34216A can start. When the line current flows, the hook status output Pin D/HS goes high. This serves as the information for the microcontroller that the set is off–hook. When the line current is no longer present, the pin goes low again. Because the line current is monitored, and not the line voltage, an interrupt of the exchange can be recognized. ) VCD ) VO2 MOTOROLA ANALOG IC DEVICE DATA MC34216A AC CHARACTERISTICS Impedance In Figure 5, the block diagram of the MC34216A performing the ac impedance is depicted. As can be seen, it is partly in common with the dc mask block diagram. The part generating the dc mask is replaced by a dc voltage source because for ac, this part has no effect. Transmit When on Pin LAI a current is injected, via the loop depicted in Figure 5, a signal is created on the line. In this way, the microphone signals and DTMF signals from the internal generator are transmitted. It can be derived that the signal voltage on the line (Vline) depends on the signal current injected in LAI (ILAI) according to: Figure 5. AC Stage of the MC34216A V Line + in T2 Z0 R5 MC34216A LAI + VCC LAO Figure 7. Replacement Diagram for the Transmit Amplifier + + + line With this relation, a simplified replacement circuit can be made for the transmit amplifier (see Figure 7). Here the product of ILAI and Z0 is replaced by one voltage source. T3 Z21 SAO VO1 Z0 x Z line + –I x line LAI Z ) Z C7 Zin Gnd + VO2 + Vline –ILAI*Z0 SAI Zline R1 Line – – When calculating the ac loop, it can be derived that the set impedance Zin equals: +I V Z in line line ǒ + R1 1 ) Ǔ[ Z0 Z21 R1 x Z0 Z21 Figure 8. Microphone Amplifier Input Stage As can be noticed, the formula for the ac impedance Zin equals the formula for the dc slope in Regions 1 and 3. However, because for the dc slopes the resistive part of Z0 and Z21 are used, the actual values for Zin and the dc slopes do not have to be equal. A complex impedance can be made by making either Z0 or Z21 complex. When Z0 is made complex to fit the set impedance, the transmit characteristics will be complex as well. The complex impedance is therefore preferably made via the Z21 network. Because Z21 is in the denominator of the Zin formula, Z21 will not be a direct copy of the required impedance, but a derivative of it. Figure 6 shows the derived network to be used for Z21. Figure 6. Derived Network for Z21 in Case of Complex Set Impedance Rv Rv SAO LAI Ra Rw Rb Cmic MC34216A R Mic Line AGC Ru Gnd 2 x Cb + 4Rb R1 x Z0 MOTOROLA ANALOG IC DEVICE DATA Cu Iu RTXI TXI ILAI Ku MIC Handset Microphone Microphone Threshold The input stage in Figure 8 consists of a current amplifier with transfer Ku and impedance RTXI = 1.0 kΩ plus an attenuator which reduces the signal current at high line currents, the so–called line length regulated gain or line AGC. This attenuator can be switched on/off via the microcontroller. The input current Iu within the telephony speech band is derived from the microphone signal according to: Cw Rv Cw VCC Iu Cb + 2(Ra R1) xRbZ0– R1) R1 x Z0 (Ra – R1) Rw + 4Rb (Ra ) Rb – R1) The microphone signal current is derived from the microphone signal according to the schematic in Figure 8. +R Vu Vu [ Ru ) Ru ) R Mic TXI With: Vu = signal of the microphone only loaded with RMic. The overall gain from microphone to line (ATX) now follows as: A TX line + Ku + VVu Ru Z0 x Z x Z ) Zline in line Practically, the gain can only be varied with Z0, Ru and RMic. 11 MC34216A Figure 9. Receive Part of the MC34216A Line + 2.4 V C17 R20 Z1 MC34216A –1 X IMP + RXO2 HYN Vref Cear + + RXO1 Ge Rload + RXI 2VBE + VO1 SAI Cload Line AGC Handset Earpiece Gnd Line – R1 The noise which is transmitted to the line can be reduced when the microphone threshold feature is enabled. This is also called squelch. When there is no microphone signal present, the transmit gain is reduced by 7.0 dB with respect to nominal. In between, the gain is varied in steps of 1.0 dB dependent on the signal level. The detection of the microphone signal level is done via an integrator which uses the external capacitors C28 and C29 for timing and filtering. This feature is also very useful to reduce the howling effect during listening–in. The MC34216A offers the possibility to mute the microphone, also called privacy mode. In this case, the far end user no longer hears the local user. It is possible to send during this mode an idle tone to the line to make the far end user aware of this. During pulse–dialing, the microphone biasing can be switched off by programming. Pin Mic will then be made high impedance, meaning that the microphone dc current no longer flows into this pin. This reduces the current consumption of the application during pulse–dialing. It can also be used to disconnect the handset microphone signal and enable another transmit signal, for instance from a handsfree microphone. Receive The receive portion of the MC34216A is shown in Figure 9. The receive signal is picked up by the amplifier at the HYN input. This is the same amplifier as present in the dc loop of Figure 4. The signal is first converted to current by the transconductance amplifier with transfer Ge. The multiplier placed after performs line length dependent gain or line AGC. Afterwards, the current is converted back to voltage via the external feedback network Zload. The resulting voltage is available at output RXO1, and at RXO2 which is the inverted earpiece output. From the diagram of Figure 9 the receive gain (A RX) can be derived as: A RX With : Z + VVRXO + Ge x R1 x Zload x line h x Z1 , + R1R20 ǒ Ǔ 1 Z h ) Z1 in The earpiece can either be connected as a single–ended or as a bridge–tied load. The above calculated gain is valid for the single–ended case. When connecting as a bridge–tied load, the gain is increased by 6.0 dB. The MC34216A offers the possibility to increase the receive gain to the earpiece with an extra 6.0 dB via the microcontroller on command of the user of the telephone set. This is useful for people with hearing problems or when the far end user speaks very softly. The MC34216A offers the possibility to mute the signal coming from the line to the earpiece. This is useful during pulse–dialing or to mute the far end user. Sidetone When a transmit signal is transmitted to the line, a part of the signal is returned to the receive channel due to the nature of the 2 to 4 wire conversion of the hybrid. During transmit, the signal on the line will be –Iline x Zline. During receive, the signal on the line will be Iline x Zin. When replacing Zin in the formula for the receive gain, it follows that the signal on the earpiece output due to a sending signal on the line will be: V ear V line–transmit + Ge x R1 x Zload x ǒ Ǔ 1 – 1 Z Z h line The sidetone can be minimized by making Zh equal to Zline. A complex sidetone network can therefore be made via a complex Z1. The coupling capacitor C17 in series with R20 is only meant to block dc. Line Length AGC The MC34216A offers the possibility to vary the transmit and receive gains over line length in order to compensate for the loss in gain at longer line lengths. In the block diagrams of the transmit and receive channels the attenuator performing the line AGC is already drawn. The line AGC can be switched on/off via the microcontroller. In case the line AGC is switched off, the transmit and receive gain are lowered 2.0 dB with respect to the value calculated via the formulas above. The line AGC characteristics for both transmit and receive channels have the general shape depicted in Figure 10. also see the sidetone characteristics below. 12 MOTOROLA ANALOG IC DEVICE DATA MC34216A The first part of the loudspeaker amplifier equals the receive part of the earphone amplifier. It therefore also includes the anti sidetone circuit and the line current AGC. The overall gain from line to loudspeaker output LPO is therefore: Figure 10. General Line AGC Characteristics Gain Gain + Nominal Gain 1 Nominal Gain ) IL – IL start IL range A Reduced Gain IL range For small line currents, and thus long lines, the gains are nominal. When the line current has increased above IL start with a current ILrange, the gain is reduced by 6.0 dB. Due to the general characteristics of the line AGC curve, the gain will be decreased further for higher currents. For France and the U.K., the line AGC will be active in Region 3 of the dc characteristics. The ILstart is approximately equal to the ILK. The range is determined by: IL range ǒ Ǔ + 1 ) R30 R28 x R T x G e x R1 x ǒ Ǔ 1 Z h ) Z1 in The gain of the loudspeaker amplifier can be adjusted by the external components as indicated in the formula above. However, the gain is also influenced by line length AGC, volume control and the signal limiter AGC. The influence of line length AGC on the loudspeaker channel is equal to its influence on the receive amplifier of the earpiece because it is in their common path. The volume of the loudspeaker is controlled via the microcontroller. In total, 8 levels can be programmed: 7 levels with equal steps of 4.5 dB and one level which completely mutes the loudspeaker amplifier. The output signal is limited by an AGC circuit when the peaks of the signal are larger than a certain threshold (peak AGC) and when the line current available is not sufficient (current AGC). This prevents distortion of the output signal and a drop of the supply voltage VCC. Iline IL start LSP Listening–In During group listening–in, both the handset and the loudspeaker are active. Via the acoustic coupling from loudspeaker to handset microphone, howling can occur when the handset is held close to the base. In order to reduce howling, an anti–howling correlator and a microphone threshold are incorporated in the MC34216A. Both functions can be switched on/off via the microcontroller. The anti–howling correlator monitors the microphone and loudspeaker signal via capacitors C26 through C29. When both signals show a high correlation, then both contain a common signal. In practice, this means that howling is present. In this case, the anti–howling correlator will reduce the loudspeaker gain in steps of 1.25 dB, until the correlation is below a certain threshold. – I2CD) + Z1 x (I2R R E3 For Low Voltage mask, the line AGC is active in Region 2. Loudspeaking Facility The MC34216A incorporates a loudspeaking facility which facilitates group listening–in with incorporated anti–howling circuitry, handsfree conversation with external duplex controller and ringing via loudspeaker with external switched mode power supply. Loudspeaker Amplifier The block diagram of the loudspeaker amplifier which is incorporated in the MC34216A is depicted in Figure 11. Figure 11. Block Diagram of the Loudspeaker Amplifier R20 Z1 2.4 V C17 Line + MC34216A IMP IRX + Line AGC 2VBE + VO1 SAI Gnd C23 R30 LPI RT Anti– Howl C24 LPO Microphone Volume Threshold Control HYN + + Signal Limiter R28 ACG Loudspeaker C25 C21 Line – R1 MOTOROLA ANALOG IC DEVICE DATA 13 MC34216A The microphone threshold reduces the gain in the acoustic feedback loop by 7.0 dB. When there is no, or only a small microphone signal, the gain in the transmit path is reduced by 7.0 dB with respect to nominal. The loudspeaker gain is then at its nominal value. At a high microphone input current, the microphone gain is back to its nominal value and the loudspeaker gain reduced by 7.0 dB. The behavior of the microphone threshold feature is depicted in Figure 12. Figure 12. Behavior of the Microphone Threshold Feature Gain Nominal A TX Reduced A LSP Iu (Arms) 33 n 110 n Handsfree A speakerphone application for handsfree conversation can easily be made with the MC34216A by adding one of the Motorola speakerphone cores to it. The TXI input can be used to amplify the transmit signal and the earphone output can be used to monitor the receive signal. The receive output of the speakerphone core can be connected to AHO1. When programming the MC34216A in speakerphone mode, the signal on this pin will be amplified to the loudspeaker output. In this way, the features and functionality of the MC34216A are optimally used, like its powerful supply, loudspeaker amplifier with anti–distortion circuitry and line current regulation. More details about this application can be found in the user manual. Ringing The MC34216A offers the possibility to generate a ringing melody via the loudspeaker, which avoids the use of a piezo buzzer. The power needed to supply the loudspeaker is transformed out of the ringer signal by a switched mode power supply TCA3385. The melody is generated by the MC34216A and programmed via the microcontroller. This concept is depicted in Figure 13. As can be seen in Figure 13, the high voltage ring signal is first transformed into a low voltage supply point with high current capability. This is needed because, compared to a piezo resonator, a loudspeaker is low ohmic. In the ringing mode, the voltage of the supply point is stabilized by the MC34216A to 5.5 V. The ringing melody can be programmed via the microcontroller and is generated internally. The output signal level is regulated via a gain control loop. The loop couples the value of VCC to the output current of the ringing melody generator. No ringing melody is made audible when VCC is below 3.8 V and the maximum volume is reached when VCC has reached 5.5 V. To ensure optimum output power under low line current conditions, the current consumption of the MC34216A in ringing mode is reduced down to 2.0 mA. The MC34216A offers the possibility to listen to the ringing melody while in the speech mode. Although the feeding conditions are not equal for ringing and speech mode, this offers the user the possibility to program his own melody and to adjust the volume. Figure 13. Concept of Ringing Via Loudspeaker Hookswitch C8 LI R24 R4 Off Hook Application C4 VCC CO DRV TCA3385 Rin T1 D10 C7 Gnd Ringer Supply Regulator and Melody Generator MC34216A Phone Line L1 SAI of MC34216A LPO IR Gnd VCC RDO C24 LPI Microcontroller Bus R30 R1 14 MOTOROLA ANALOG IC DEVICE DATA MC34216A Programming Possibilities The MC34216A can be programmed by a microcontroller via a 2 wire bus. In this way, it is possible to program the dc mask, DTMF tones, listening–in mode, loudspeaker volume, etc. The bus interface of the microcontroller with the MC34216A consists of 2 wires: a data wire and a clock wire connected to Pins D/HS and CLK respectively. Also, the reset Pin RST of the MC34216A is connected to the microcontroller. The MC34216A itself has a local oscillator connected to Pin Osc. The local oscillator needs a 500 kHz parallel mode ceramic resonator, with approximately 75 pF capacitance, connected to ground (for instance, the TOKO FCRK500A–P35). The local oscillator is the reference for all the internal timings of the MC34216A. The 2 wire bus is based on the SCI standard. This standard includes things such as de–bouncing and bus monitoring in order to check that the data is sent over correctly. The full bus specification is depicted in Figure 14. The data is read in during the falling edge of the clock signal. The clock has to be active only during the transfer of the data. After the data is sent, the clock has to be kept low. The D/HS pin is not only the input for the data but also the output for the hookswitch information. When there is line current flowing, this pin will be high, provided that the clock line is low. The reset Pin RST of the MC34216A is high for supply voltages on VCC of 3.1 V and higher. It is the indication for the microcontroller that programming of the device is possible. When RST becomes high and D/HS is high as well, the microcontroller can start programming the registers for the speech mode. When information from the ringer indicates that there is a ring signal present on the line, the microcontroller can start programming the registers for ringing mode. The registers of the MC34216A are 8–bits wide. The register bits are shown in Figure 15. The 8–bits can be split up into 2 address bits and 6 data bits of the format A1A0D5D4D3D2D1D0. Data is sent over starting with the address bits (A1 and A0) and then the data bits, D5 through D0. During startup of the MC34216A, the registers are internally reset in order to have a defined state. The contents of the registers after the reset are also given in Figure 15. In summary, it starts up with LV mask and handset mode with the transducers muted. Figure 14. Bus Specification TI Tclk T(on) Clk D/HS TDS TDH T1 Clk D/HS Symbol Tclk T(on) TDS TDH TD TI T1 Vihc Vilc Vihd Vild Description Min Max Unit Clock Period High Level Duration Data Setup Time Data Hold Time Debounce Time Data Reset Time to First Clock Rising Edge Interval Between 2 Successive 8–Bit Words High Input Level – Clock Low Input Level – Clock High Input Level – Data Low Input Level – Data 125 66 10 20 16 40 700 0.7 0.0 1.7 0.0 1000 – Ton 900 – – – 5.0 0.3 5.0 1.2 µs µs µs µs µs µs µs Vdc Vdc Vdc Vdc MOTOROLA ANALOG IC DEVICE DATA 15 ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁ ÁÁÁÁ ÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁ ÁÁÁÁ ÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁ ÁÁÁ ÁÁÁ ÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ MC34216A Figure 15. Register Description Address Data Symbol A1, A0 = 00 D0 MicM D1 A1, A0 = 01 A1, A0 = 10 A1, A0 = 11 MFC1 MFC0 0 0 0 Function State at Reset Microphone Mute 0 = Muted EM Earphone Mute 0 = Muted D2 LD Loop Disconnect 0 = Loop Closed D3 PT Pilot Tone 0 = Tone “Off” D4 IT Idle Tone 0 = Tone “Off” D5 MicP Microphone Power 0 = Power “Off” D0 MFC0 Tone Control 0, See Tables Below D1 MFC1 Tone Control 0, See Tables Below D2 MF0 Tone Select 0, See Tables Below D3 MF1 Tone Select 0, See Tables Below D4 MF2 Tone Select 0, See Tables Below D5 MF3 Tone Select 0, See Tables Below D0 R/S Ring/Speech Mode 0 = Speech Mode D1 EA Earphone Gain 6.0 dB 0 = Nominal Gain D2 G0 Loudspeaker Gain 0, See Tables Below D3 G1 Loudspeaker Gain 0, See Tables Below D4 G2 Loudspeaker Gain 0, See Tables Below D5 RT Ring Tone 0 = Tone “Off” D0 DCM0 DC Mask Control 0, See Tables Below D1 DCM1 DC Mask Control 1, See Tables Below D2 Sp Speakerphone Mode 0 = “Off” D3 GR Line Length Regulation 0 = “On” D4 HPI Anti–Howling 0 = “On” D5 Mth Microphone Threshold 0 = “On” G2 G1 G0 Switch DTMF Generation “Off” 0 0 0 Loudspeaker Amplifier Muted 1 Select DTMF–Pair and Generate 0 0 1 Gain Reduction 27.0 dB 1 0 Select Pilot/Idle/Ring Tone Frequency 0 1 0 Gain Reduction 22.5 dB 1 1 Select DTMF/Idle Tone Level (Level ILAI) 0 1 1 Gain Reduction 18.0 dB DCM1 DCM0 1 0 0 Gain Reduction 13.5 dB 0 0 Startup Mask for France 1 0 1 Gain Reduction 9.0 dB 0 1 U.K. Mask 1 1 0 Gain Reduction 4.5 dB 1 0 Low Voltage Mask 1 1 1 No Attenuation, Nominal Gain 1 1 French Mask 16 Function Function Function MOTOROLA ANALOG IC DEVICE DATA ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁ ÁÁÁ ÁÁÁ ÁÁÁÁ ÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁ ÁÁÁ ÁÁÁ ÁÁÁÁ ÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁ ÁÁÁ ÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ MC34216A Figure 16. Register Description MFC1 = 0, MFC0 = 1 DTMF–Pair (in Hz) MFC1 = 1, MFC0 = 0 MF3 MF2 MF1 MF0 Low High Key Single Tone (in Hz) 0 0 0 0 941 1633 D 440 0 0 0 1 941 1477 # 494 0 0 1 0 941 1336 0 523 0 0 1 1 941 1209 * 554 0 1 0 0 852 1633 C 587 0 1 0 1 852 1477 9 622 0 1 1 0 852 1336 8 659 0 1 1 1 852 1209 7 698 1 0 0 0 770 1633 B 784 1 0 0 1 770 1477 6 880 1 0 1 0 770 1336 5 988 1 0 1 1 770 1209 4 1047 1 1 0 0 697 1633 A 1319 1 1 0 1 697 1477 3 1661 1 1 1 0 697 1336 2 1760 1 1 1 1 697 1209 1 2093 The dc mask of the MC34216A can be programmed to fit the different country requirements. During startup, this will be the first register which has to be programmed in order to have a dc setting as soon as possible. The pulse–dialing is timed by the microcontroller (make/brake ratio, inter–digit pause) by making the LD bit high and low. Also, memory dialing or last number redial can be done. During LD = 1, the MC34216A makes its output LAO low for the line break and reduces its internal current consumption. The current through the microphone can be stopped also by making bit MicP low. The transmit path can be muted by making the MicM bit low. It effectively mutes both the signal from the handset microphone as well as the signal coming from a speakerphone circuit. During this microphone mute state, a MOTOROLA ANALOG IC DEVICE DATA melody can be sent to the line (melody on hold). In order to enable the idle tone function, the IT bit has to be made high. The squelch function can be enabled by making the Mth bit low. The line AGC feature can be enabled by making the GR bit low. The receive path can be muted by making the EM bit low. It effectively mutes both the signal from the line to the handset earpiece as well as to the loudspeaker output. During this mute state, a pilot tone melody can be sent to the earpiece or loudspeaker. This is very useful during pulse–dialing, programming of telephone numbers in memories or during operation of an answering or fax machine. In order to enable the pilot tone function, the PT bit has to be made high. The gain of the earphone amplifier can be increased by 6.0 dB by making the EA bit high. 17 MC34216A The MC34216A incorporates a DTMF generator with integrated filters. The DTMF pairs can be selected by the microcontroller via the MF bits. In this way, the whole DTMF range for a 4x4 keyboard is available which fulfills the CCITT requirements. The DTMF level on the line can be adjusted by external components and it can also be programmed via the MF bits. For listening–in operation, the loudspeaker has to be switched on and the anti–howling circuitry has to be activated. The loudspeaker is switched on by making the G2G1G0 bits high. They also set the volume. The anti–howling circuit is activated by making bit HPI low. By making bit Mth high, the microphone threshold feature is enabled which further reduces the effect of howling. By making the SP bit high, the speakerphone mode is programmed. This automatically disables the earpiece by muting the RXO2 output, and it enables the AHO1 input as a speakerphone signal input. By making the MicP bit low, the handset microphone is no longer powered and is thus muted. This ensures that only the signal from the base microphone is transmitted to the line. By making the R/S bit high, the ringing mode is programmed. The ringing melody is programmed via the microcontroller and generated by the MC34216A. The volume can be programmed via the 3 loudspeaker gain bits G2G1G0. The ring melody is enabled by making the ring tone switch RT high. The melody can be tested during normal speech mode by activating the ring tone switch RT while R/S is low. The answering machine mode is entered by making the R/S bit high. This enables the microphone, earphone and loudspeaker amplifiers while the set is on–hook. This makes 18 it possible to record a message with the handset microphone and to playback messages via the earpiece or loudspeaker. Other blocks of the circuit are not activated. During off–hook operation, the incoming messages can be recorded and the outgoing message can be played in the normal way. More details about the answering machine application can be found in the user manual. Support Material Device Specification: Brief description of the MC34216A, block diagram, device data, bus specification, test diagram, typical application User Manual MC34216A: Extended description of the circuit and its concept, description of the programmability, adjustment procedure, application hints and proposals Demonstration Board: Performance of the MC34216A is shown in an application with the TCA3385 switched mode power supply and a MC68HC705 microcontroller Adjustment Software: A QBASIC program which helps the customer to find the right component values for fulfilling the requirements Register Display Board: Visualizes the register contents which are transmitted on the demonstration board by means of LEDs MOTOROLA ANALOG IC DEVICE DATA MOTOROLA ANALOG IC DEVICE DATA C6 Line – Speaker Handset Microphone Handset Earpiece Line + R31 C20 R9 + R7 C5 6 C22 C24 C35 7 C34 From VCC 25 R6 27 R29 Mic TXI RXI RXO2 RXO1 LV = Low Voltage Mode F = France U.K. = United Kingdom C30 C3 26 C19 To IMP LPO 23 R20 HYN 10 R16 R15 R30 C23 R1 R5 R6 R7 R9 R12 R13 R14 R15 R16 R20 R21 R28 R29 R30 R31 24 LPI 560 k 0 750 k 150 k 7.5 k 20 k 20 R28 15 820 150 k 1.0 k 39 k 69.8 k 560 k 620 k 620 k 120 k 5.1 k 16.2 k 10 k 10 220 k 1.8 k Value Value Component LV F C17 C11 C21 330 k 620 k 620 k 120 k 13 k 15 k 15 Value U.K. CM 12 SAO 14 MC34216A NDC 11 C12 To SAI C26 1 28 C25 AHO1 LAI 9 2 C27 AHO2 3 IMP 13 R14 C28 C29 To IMP 4 MTC C22 C23 C24 C25 C26 C27 C28 C29 C30 C31 C32 C34 C35 T2 T3 X1 15 Osc 16 100 n 330 p 47 µ 220 n 220 n 220 n 15 n 100 n 10 µ 100 n 1.0 n 4.7 n 2.2 µ MJE350 MPSA42 500 kHz SAI R12 Iref 20 C10 Value Component LV, F, U.K. R13 MTF 330 p 470 p 10 n Value Value F U.K. C13 R21 470 p 220 p 10 n 22 n 470 µ 0 4.7 n 220 p 470 p 10 n 1.0 n 470 p 470 p 470 n 680 n 100 n 10 µ 68 n AGC C2 C3 C5 C6 C7 C10 C11 C12 C13 C14 C16 C17 C19 C20 C21 Value Component LV C16 To IMP C14 To HYN Figure 17. Typical Application X1 D/HS Clk RS LAO Gnd AGnd VCC 17 18 19 8 22 5 21 C32 C2 C31 R1 T3 R5 C7 To Microcontroller + T2 MC34216A 19 MC34216A OUTLINE DIMENSIONS DW, DWF SUFFIX PLASTIC PACKAGE CASE 751F–04 ISSUE E -A28 NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2. CONTROLLING DIMENSION: MILLIMETER. 3. DIMENSION A AND B DO NOT INCLUDE MOLD PROTRUSION. 4. MAXIMUM MOLD PROTRUSION 0.15 (0.006) PER SIDE. 5. DIMENSION D DOES NOT INCLUDE DAMBAR PROTRUSION. ALLOWABLE DAMBAR PROTRUSION SHALL BE 0.13 (0.005) TOTAL IN EXCESS OF D DIMENSION AT MAXIMUM MATERIAL CONDITION. 15 14X -B1 P 0.010 (0.25) M B M 14 28X D 0.010 (0.25) M T A S B M S R X 45° C -T26X -T- G K SEATING PLANE F J DIM A B C D F G J K M P R MILLIMETERS MIN MAX 17.80 18.05 7.40 7.60 2.35 2.65 0.35 0.49 0.41 0.90 1.27 BSC 0.23 0.32 0.13 0.29 0° 8° 10.05 10.55 0.25 0.75 INCHES MIN MAX 0.701 0.711 0.292 0.299 0.093 0.104 0.014 0.019 0.016 0.035 0.050 BSC 0.009 0.013 0.005 0.011 0° 8° 0.395 0.415 0.010 0.029 Motorola reserves the right to make changes without further notice to any products herein. Motorola makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does Motorola assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation consequential or incidental damages. “Typical” parameters can and do vary in different applications. All operating parameters, including “Typicals” must be validated for each customer application by customer’s technical experts. Motorola does not convey any license under its patent rights nor the rights of others. Motorola products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the Motorola product could create a situation where personal injury or death may occur. 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Box 20912; Phoenix, Arizona 85036. 1–800–441–2447 JAPAN: Nippon Motorola Ltd.; Tatsumi–SPD–JLDC, Toshikatsu Otsuki, 6F Seibu–Butsuryu–Center, 3–14–2 Tatsumi Koto–Ku, Tokyo 135, Japan. 03–3521–8315 MFAX: [email protected] – TOUCHTONE (602) 244–6609 INTERNET: http://Design–NET.com HONG KONG: Motorola Semiconductors H.K. Ltd.; 8B Tai Ping Industrial Park, 51 Ting Kok Road, Tai Po, N.T., Hong Kong. 852–26629298 20 ◊ *MC34216A/D* MC34216A/D MOTOROLA ANALOG IC DEVICE DATA