E2A0045-16-X1 ¡ Semiconductor MSM7577 ¡ Semiconductor This version: Jan. 1998 MSM7577 Previous version: Nov. 1996 Voice Signal Level Control LSI GENERAL DESCRIPTION The MSM7577 is an LSI for Audio Signal Level adjustment for telephone set, etc. Conventionally, its circuit has been made within individual unit, such as amplifiers, resistors and switches. However, using this LSI allows for simple mounting and economically small space. FEATURES Receiving system • Built-in electrical volume Digital control (3 bit / 8 step) • For transmission voice, with side tone route available. • Mute function available. Transmitting system • Built-in operational amplifier for transmission signal level adjustment. • Mute function available. • Single +2.7 V to +5.25 V power supply • Power down function • Package: 16-pin plastic SOP (SOP16-P-300-1.27-K) (Product name : MSM7577MS-K) APPLICATION Cellular handset, cordless telephone, etc. 1/8 ¡ Semiconductor MSM7577 BLOCK DIAGRAM 56 kW ATT – + RAUD i o 10 kW – + RCV1 200 kW ATT0 ATT1 ATT2 ATTE SG AN2 SG ATT0 ATT1 ATT2 ATTE – + 150 kW RCV2 SG AO3 AN3 MIC – + 35 kW 200 kW 35 kW SG SG SG – + TAUD VDD GND PD PIN CONFIGURATION (TOP VIEW) TAUD 1 16 VDD AN2 2 15 AO3 PD 3 14 MIC RCV2 4 13 AN3 RCV1 5 12 ATTE NC 6 11 ATT2 RAUD 7 10 ATT1 GND 8 9 ATT0 16-Pin Plastic SOP NC : No connect pin 2/8 ¡ Semiconductor MSM7577 PIN DESCRIPTION Pin No. Name I/O 1 TAUD O 2 AN2 I Description Output pin of transmitting voice. Receive voice input. Gain control should be connected by a resistor between AN2 pin RCV2 pin. Power down control. 3 PD 1 H : Power down L : Power on Output pin of receiving voice. 4 RCV2 O Gain control should be connected by a resistor between AN2 and RCV2 pin. RCV2 signal is opposite phase to RCV1 signal. RCV1 O 6 NC — 7 RAUD I 8 GND — 5 Receive voice input. RCV1 signal is opposite phase to RCV2 signal. No Connection. Receive voice input. Ground (0 V). Volume control. 9 ATT0 10 ATT1 11 ATT2 I ATT2 ATT1 ATT0 Loss level (dB) 0 0 0 0 ±0.3 0 0 1 –2 ±0.3 0 1 0 –4 ±0.3 0 1 1 –7 ±0.3 1 0 0 –10 ±0.3 1 0 1 –13 ±0.3 1 1 0 –16 ±0.3 1 1 1 –19 ±0.3 Mute signal input. 12 ATTE I H : Mute mode L : Operating mode 13 AN3 I 14 MIC I 15 AO3 O 16 VDD — Gain control and frequency responce control. Gain control should be controlled by a resistor between AN3 and AO3. Input pin of Microphone signal. Gain control and frequency responce control. Gain control should be controlled by a resistor between AN3 and AO3. Power supply (+3 V). 3/8 ¡ Semiconductor MSM7577 ABSOLUTE MAXIMUM RATINGS Symbol Min. Max. Unit Power Supply Voltage Parameter VDD –0.3 +7.0 V Digital Input Voltage VIND –0.3 VDD + 0.3 V Analog Input Voltage VINA –0.3 VDD + 0.3 V Storage Temperature TSTG –55 +150 °C RECOMMENDED OPERATING CONDITIONS Symbol Condition Min. Typ. Max. Unit Operating Temperature Parameter Ta — –20 25 70 °C Power Supply Voltage VDD VDD +2.7 +3.00 +5.25 V RLA1 TAUD 600 — — W RLA2 Except TAUD pin. 10 — — kW Analog Output Load Resistance 1 Analog Output Load Resistance 2 4/8 ¡ Semiconductor MSM7577 ELECTRICAL CHARACTERISTICS DC Characteristics Parameter ( Ta = –20°C to 70°C, VDD = 2.7 V to 5.25 V ) Symbol Power Supply Current IDD Power Down Current — Low Level Input Voltage High Level Input Voltage VIL VIH Condition Min. Typ. Max. VDD = 3.0 V — 1.2 2.4 *VDD = 5.0 V — 10.0 20 PD = VDD — 0.1 ATT0 to ATT2 ATTE, PD ATT0 to ATT2 0.7 ¥ ATTE, PD VDD Digital Input Leakage IIL VI = GND Current IIH VI = VDD Analog Input Voltage Level Analog Input Resistance Analog Output Level Range 1 Analog Output Level Range 2 VIA RIA V01 V02 0 RAUD, MIC AN2, AN3 RAUD MIC RCV1, RCV2, AO3 RL = 5 kW (to SG level) TAUD RL = 600 W (to SG level) — 0.2 0.3 ¥ VDD Unit mA mA V — VDD V –10 — +10 mA — — 1.2 VP-P — 200 — kW 1.2 — — VP-P 1.2 — — VP-P 5/8 ¡ Semiconductor MSM7577 Analog Interface Characteristics ( Ta = –20°C to 70°C, VDD = 2.7 V to 5.25 V ) Parameter RX-AUDIO Path Gain Symbol Condition Min. Typ. Max. Unit +14 +15 +16 dB 40 — — dB 40 — — dB –1.0 0 +1.0 dB –9.5 –8.5 –7.5 dB –0.3 0 +0.3 dB — — 8 % RAUD-RCV1 VRXA ATT = 0 dB ATTE = L RAUD-RCV1 RX-AUDIO Loss Level (Mute) LRXA RAUD = –20 dBV ATTE = 0 dB ATTE = LÆH TX-AUDIO Loss Level TX-AUDIO Path Gain MIC Path Gain ATT Establish Error TX-AUDIO Distortion MIC-TAUD LTXA MIC = –20 dBV ATTE = LÆH MIC-TAUD VTXA AO3 and AN3 are connected 600 W load resistance VRTA VATG MIC-RCV1 AO3 and AN3 are connected RAUD-RCV1 ATT0 to ATT2 MIC = –7.45 dBV — fi = 1 kHz 600 W load resistance 6/8 ¡ Semiconductor MSM7577 APPLICATION CIRCUIT MSM7577MS-K +3 V C2 Transmit voice data R2 C3 R1 C1 Receive voice data In the Reverse Type V DD 16 2 AN2 AO3 15 3 PD MIC 14 4 RCV2 AN3 13 5 RCV1 ATTE 12 6 NC ATT2 11 7 RAUD ATT1 10 8 GND ATT0 9 C4 C1 R1 > 30 kW R2 > 30 kW C1 = 0.1 µF C2 = 1 µF C3 = 50 pF C4 = 10 pF Gain = R2/R1 C6 R4 C5 1 TAUD R3 AO3 AN3 Analog input MIC – + R3 > 10 kW R4 > 10 kW C5 > 1 µF C6 = 50 pF Gain = R4/R3 In the Same Phase Type Analog input C7 MIC AN3 R5 R6 AO3 – + R5 > 10 kW R6 > 10 kW C7 > 0.1 µF C8 > 1 µF C9 = 10 pF Gain = 1 + (R5/R6) C9 C8 7/8 ¡ Semiconductor MSM7577 PACKAGE DIMENSIONS (Unit : mm) SOP16-P-300-1.27-K Mirror finish Package material Lead frame material Pin treatment Solder plate thickness Package weight (g) Epoxy resin Cu alloy Solder plating 5 mm or more 0.21 TYP. Notes for Mounting the Surface Mount Type Package The SOP, QFP, TSOP, SOJ, QFJ (PLCC), SHP and BGA are surface mount type packages, which are very susceptible to heat in reflow mounting and humidity absorbed in storage. Therefore, before you perform reflow mounting, contact Oki’s responsible sales person for the product name, package name, pin number, package code and desired mounting conditions (reflow method, temperature and times). 8/8