GHz PLL with I2C Bus and Four Chip Addresses SDA 3302 Family Preliminary Data Bipolar IC Features ● 1-chip system for MPU control (I2C bus) ● 4 programmable chip addresses ● Short pull-in time for quick channel switch-over and optimized loop stability ● Charge pump output with switch off option ● Up to 3*) high current band switch outputs (20 mA) ● Up to 4*) output ports (5 mA) P-DIP-18-5 P-DSO-20-1 *) depending on version P-DSO-16-1 Type Ordering Code Package SDA 3302-5 Q67000-H5112 P-DIP-18-5 SDA 3302-5X Q67000-H5111 P-DSO-20-1 (SMD) SDA 3302-5X6 Q67000-H5110 P-DSO-16-1 (SMD) SDA 3302-5X Q67006-H5111 P-DSO-20-1 Tape & Reel (SMD) SDA 3302-5X6 Q67006-H5110 P-DSO-16-1 Tape & Reel (SMD) Semiconductor Group 1 02.97 SDA 3302 Family Functional Description Combined with a VCO (tuner) the SDA 3302 device, with four hardware-switched chip addresses, forms a digitally programmable phase-locked loop for use in television sets with PLL frequency-synthesis tuning. The PLL permits precise crystal-controlled setting of the frequency of the tuner oscillators between 16 and 1300 MHz in increments of 62.5 kHz. The tuning process is controlled by a microprocessor via an I2C bus. The crystal oscillator generates a sinusoidal signal suppressing the higher-order harmonics, which reduces the moiré noise considerably. Circuit Description Tuning Section (refer to block diagram) UHF/VHF REF Q1, Q2 The tuner signal is capacitively coupled at the UHF/VHF input and subsequently amplified. The reference input REF should be decoupled to ground using a capacitor of low series inductance. The signal passes through an asynchronous divider with a fixed ratio of P = 8, an adjustable divider with ratio N = 256 through 32767 and is then compared in a digital phase/frequency detector to a reference frequency fREF of 7.8125 kHz. The latter is derived from a balanced, low-impedance 4 MHz crystal oscillator (pin Q1, Q2), whose output signal is divided by Q = 512. The phase detector has two outputs UP and DOWN that drive the two current sources I+ and I– of a charge pump. If the negative edge of the divided VCO signal appears prior to the negative edge of the reference signal, the I+ current source pulses for the duration of the phase difference. In the reverse case the I– current source pulses. PD, UD When the two signals are in phase, the charge-pump output (PD) goes highimpedance (PLL is locked). An active low-pass filter integrates the current pulses to generate the tuning voltage for the VCO (internal amplifier an external transistor at the UD output and an external RC circuitry). The charge-pump output can also be set to high-impedance state when control bit T0 = 1. Here it should be noted, however, that the tuning voltage can alter over a long period in the high-impedance state as a result of self-discharge in the peripheral circuitry. UD can be disconnected internally by the control bit OS to enable external adjustments. By means of a control bit 5I the pump current can be switched between two values by software. This switchover permits alteration of the control response of the PLL in the locked-in state. In this way different VCO gains in the different TV bands can be compensated for example. Semiconductor Group 2 SDA 3302 Family Circuit Description (cont’d) P0-P2 The software-switched outputs (P0, P1, P2) can be used for direct band selection (20-mA current output). P4-P7 P4, P5, P6 and P7 are open-collector outputs for a variety of different purposes. The test bit T1 = 1 switches the test signals f REF (4 MHz/512) and Cy (divided input signal) to P6 and P7. CAS Four different chip addresses can be set by appropriate connection of pin CAS. I2C-Bus Interface SCL, SDA Data are exchanged between the processor and the PLL on the I2C bus. The clock is produced by the processor (input SCL), while pin SDA works as an input or output depending on the direction of the data (open collector; external pullup resistor). Both inputs have hysteresis and a lowpass characteristic, which enhances the noise immunity of the I2C bus. The data from the processor are applied to an I2C bus controller and filed in registers according to their function. When the bus is free, both lines are in the marking state (SDA, SCL are high). Each telegram begins with a start condition and ends with the stop condition. Start condition: SDA goes low while SCL remains high; stop condition: SDA goes high while SCL remains high. All further data exchanges occur while SCL is low and are accepted by the controller with the positive clock edge. For what follows, refer to the table of logic allocations. All telegrams are transmitted byte by byte, followed by a ninth clock pulse, during which the controller puts the SDA line on low (acknowledge condition). The first byte consists of seven address bits, with which the processor selects the PLL from a number of peripheral devices (chip select). The eighth bit is always low. In the data portion of the telegram the first bit of the first or third data byte determines whether a divider ratio or control information follows. In each case the byte following the first byte must be of the same data type (or a stop condition). VS, GND When the supply voltage is applied, a power-on reset circuit prevents the PLL from putting the SDA line on low, which would block the bus. Semiconductor Group 3 SDA 3302 Family Circuit Description (cont’d) Logic Allocations MSB A = Acknowledge Address byte 1 1 0 0 0 MA1 MA0 0 A Prog. divider byte 1 0 n14 n13 n12 n11 n10 n9 n8 A Prog. divider byte 2 n7 n6 n5 n4 n3 n2 n1 n0 A Control info. byte 1 1 5I T1 T0 1 1 1 OS A Control info. byte 2 P7 P6 P5 P4 X P2 P1 P0 A Divider Ratio N = 16384 × n14 + 8192 × n13 + 4096 × n12 + 2048 × n11 + 1024 × n10 + 512 × n9 + 256 × n8 + + 128 × n7 + 64 × n6 + 32 × n5 + 16 × n4 + 8 × n3 + 4 × n2 + 2 × n1 + n0 Band Selection P2-P0 = 1 Open-collector output is active. Port Outputs P7-P4 = 1 Open-collector output is active. Pump Current Switchover 5I = 1 High current. UD Disable OS = 1 VD is disabled. Test Mode T1, T0 = 0,0 T1 = 1 T0 = 1 Normal mode P6 = fREF; P7 = Cy Tristate charge pump PD is in high-impedance. Semiconductor Group 4 SDA 3302 Family Circuit Description (cont’d) Chip-Address Switching MA1 MA0 Voltage on CAS 0 0 (0-0.1) VS 0 1 open 1 0 (0.4-0.6) VS 1 1 (0.9-1) VS Pulse Diagram Telegram Examples Start-Addr-DR1-DR2-CW1-CW2-Stop Start-Addr-CW1-CW2-DR1-DR2-Stop Start-Addr-DR1-DR2-CW1-Stop Start-Addr-CW1-CW2-DR1-Stop Start-Addr-DR1-DR2-Stop Start-Addr-CW1-CW2-Stop Start-Addr-DR1-Stop Semiconductor Group Start Addr DR1 DR2 CW1 CW2 Stop 5 = start condition = address = divider ratio 1st byte = divider ratio 2nd byte = control word 1st byte = control word 2nd byte = stop condition SDA 3302 Family Pin Configuration (SDA 3302-5) (top view) P-DIP-18-5 Semiconductor Group 6 SDA 3302 Family Pin Definitions and Functions (SDA 3302-5) Pin No. Symbol Function 1 PD Active-filter input/charge-pump output 2 Q1 Crystal 3 Q2 Crystal 4 SDA Data input/output for I2C bus 5 SCL Clock input for I2C bus 6 P7 Port output (open collector) 7 P6 Port output (open collector) 8 P5 Port output (open collector) 9 P4 Port output (open collector) 10 CAS Chip-address switchover 11 P2 Port output (open collector) 12 P1 Port output (open collector) 13 P0 Port output (open collector) 14 VS Supply voltage 15 UHF/VHF Signal input 16 REF Amplifier reference input 17 GND Ground 18 UD Output active filter Semiconductor Group 7 SDA 3302 Family Pin Configuration (SDA 3302-5X) (top view) P-DSO-20-1 Semiconductor Group 8 SDA 3302 Family Pin Definitions and Functions (SDA 3302-5X) Pin No. Symbol Function 1 PD Active-filter input/charge-pump output 2 Q1 Crystal 3 Q2 Crystal 4 N.C. Not connected 5 SDA Data input/output for I2C bus 6 SCL Clock input for I2C bus 7 P7 Port output (open collector) 8 N.C. Not connected 9 P6 Port output (open collector) 10 P5 Port output (open collector) 11 P4 Port output (open collector) 12 CAS Chip-address switchover 13 P2 Port output (open collector) 14 P1 Port output (open collector) 15 P0 Port output (open collector) 16 VS Supply voltage 17 UHF/VHF Signal input 18 REF Amplifier reference input 19 GND Ground 20 UD Active-filter output Semiconductor Group 9 SDA 3302 Family Pin Configuration (SDA 3302-5X6) (top view) P-DSO-16-1 Semiconductor Group 10 SDA 3302 Family Pin Definitions and Functions (SDA 3302-5X6) Pin No. Symbol Function 1 PD Active-filter input/output pump output 2 Q1 Crystal 3 Q2 Crystal 4 SDA Data input/output for I2C bus 5 SCL Clock input for I2C bus 6 P7 Port output (open collector) 7 P6 Port output (open collector) 8 P5 Port output (open collector) 9 P4 Port output (open collector) 10 CAS Chip-address switchover 11 P1 Port output (open collector) 12 VS Supply voltage 13 UHF/VHF Signal input 14 REF Amplifier reference input 15 GND Ground 16 UD Output active filter Semiconductor Group 11 SDA 3302 Family Pin Definitions and Functions, Reference List SDA 3302 P-DIP-18-5 Pin No. SDA 3302X P-DSO-20-1 Pin No. SDA 3302X6 Symbol P-DSO-16-1 Pin No. Function 1 1 1 PD Input active-filter input charge pump output 2 2 2 Q1 Crystal 3 3 3 Q2 Crystal - 4 - N.C. Not connected 4 5 4 SDA Data input/output for I2C bus 5 6 5 SCL Clock input for I2C bus 6 7 6 P7 Port output (open collector) - 8 - N.C. Not connected 7 9 7 P6 Port output (open collector) 8 10 8 P5 Port output (open collector) 9 11 9 P4 Port output (open collector) 10 12 10 CAS Chip-address switchover 11 13 - P2 Port output (open collector) 12 14 11 P1 Port output (open collector) 13 15 - P0 Port output (open collector) 14 16 12 VS Supply voltage 15 17 13 UHF/VHF Signal input 16 18 14 REF Amplifier reference input 17 19 15 GND Ground 18 20 16 UD Output active filter Semiconductor Group 12 SDA 3302 Family Block Diagram SDA 3302-5 Pin nos. refer to P-DIP-18 package only. For other packages, see reference list on page 16 Semiconductor Group 13 SDA 3302 Family Absolute Maximum Ratings TA = 25 °C Parameter Limit Values Symbol 2) min. max. Unit Remarks Supply voltage VS – 0.3 6 V Output PD V1 – 0.3 VS V Crystal Q1 V2 – 0.3 VS V Crystal Q2 V3 – 0.3 VS V Bus input/output SDA V4 – 0.3 6 V Bus input SCL V5 – 0.3 6 V Port output P7, P6, P5, P4 V6, 7, 8, 9 – 0.3 16 V Chip-address switchover V10 – 0.3 VS V Port output P2, P1, P0 V11, 12, 13 – 0.3 16 V open collector Signal input UHF/VHF V15 – 0.3 0.3 V for VS = 0 V Reference input REF V16 – 0.3 0.3 V for VS = 0 V Output active filter UD V18 – 0.3 VS V Bus output SDA I4L –1 5 mA open collector Port output P7, P6, P5, P4 I6L, 7L, 8L, 9L – 1 5 mA open collector Port output P2, P1, P0 I11L, 12L, 13L – 1 20 mA open collector Chip temperature TC 125 °C Total port output current ZIL 25 mA Storage temperature Tstg 125 °C Thermal resistance (system-air) RthSA 80 K/W – 40 2) Pin nos. refer to P-DIP-18 package Semiconductor Group 14 SDA 3302 Family Absolute Maximum Ratings TA = 25 °C Parameter Limit Values Symbol 2) min. max. Unit Operating Range Supply voltage VS 4.5 5.5 V Ambient temperature TA – 20 80 °C Input frequency f15 16 1300 MHz Crystal frequency f2, 3 4 MHz Programmable divider factor N 256 1) Design note: no 100 % final inspection. 2) Pin nos. refer to P-DIP-18 package Semiconductor Group 15 32767 Remarks SDA 3302 Family Characteristics VS = 5 V; TA = 25 °C Parameter Limit Values Symbol 2) min. Current consumption IS Crystal-oscillator frequency f2, 3 Oscillator level1) (Voltage across crystal) V2, 3 typ. Unit Test Condition Test Circuit mA VS = 5 V 1 series capacitance 18 pF; fxtal = 4 MHz 1 max. 35 3.99975 4.000 4.00025 MHz Margin from 1st 1) and 2nd harmonic 2.6 Vpp 20 dB Input Sensitivity UHF/VHF a15 a15 a15 – 27/10 – 27/10 – 27/10 3/315 3/315 3/315 3) f15 = 70-500 MHz 2 f15 = 1000 MHz 2 f15 = 1100 MHz 2 Band-Select Outputs P0-P2 (switch with open collector) Reserve current I13H 10 µA V13H = 13.5 V 3 Residual voltage V13L 0.5 V I13H = 20 mA 3 Port Outputs P4-P7 (switch with open collector) Reserve current I9H 10 µA V9H = 13.5 V 4 Residual voltage V9L 0.5 V I9L = 1.7 mA 4 5I = HIGH; V1 = 2 V Note: The sum of the currents in ports P0-P7 must not exceed 25 mA Phase-Detector Output PD Pump current I1H ± 90 ± 230 ± 300 µA Pump current I1H ± 22 ± 50 µA ± 75 5I = LOW; V1 = 2 V Output voltage V1L 1.0 2.5 1) Design note: no 100 % final inspection. 2) Pin nos. refer to P-DIP-18 package 3) dBm/mVrms into 50 Ω Semiconductor Group 16 V locked SDA 3302 Family Characteristics (cont’d) VS = 5 V; TA = 25 °C Parameter Limit Values Symbol 2) min. typ. Unit Test Condition Test Circuit µA V18 = 0.8 V; IIH = 90 µA 5 max. Output Active Filter UD (T0 = 1) Output current – I18 Output voltage V18 100 mV V1L = 0 V 5 Output voltage V18 500 mV OS = 1 5 500 Chip-Address Switchover Input current I10H 50 µA V10H = 5 V 7 Input current – I10H 50 µA V10H = 0 V 7 5.5 5.5 V V Bus Inputs SCL, SDA Input voltage V5H V5L Input current I5H 10 µA V5H = VS 6 Input current – I5L 20 µA V5L = 0 V 6 3 6 6 Output SDA (open collector) Reverse current I4H 10 µA V4H = 5.5 V 6 Output voltage V4L 0.4 V I4L = 3 mA 6 Rise time tR 1 µs 6 Fall time tF 0.3 µs 6 100 kHz 6 Edges SCL, SDA Shift Clock SCL Frequency f5 0 H-pulse width t5H 4 µs 6 L-pulse width t5L 4.7 µs 6 2) Pin nos. refer to P-DIP-18 package Semiconductor Group 17 SDA 3302 Family Characteristics (cont’d) VS = 5 V; TA = 25 °C Parameter Limit Values Symbol 2) min. typ. Unit max. Test Condition Test Circuit Start Setup time tSUSta 4.7 µs 6 Hold time tHDSta 4 µs 6 Setup time tSUsto 4.7 µs 6 Bus free tBUF 4.7 µs 6 Setup time tSUDat 0.25 µs 6 Hold time tHDDat 0 µs 6 Stop Data Exchange Input hysteresis1) SCL, SDA 300 mV Lowpass cutoff1) frequency SCL, SDA 500 kHz 1) Design note: no 100 % final inspection. 2) Pin nos. refer to P-DIP-18 package Semiconductor Group 18 SDA 3302 Family Test Circuit 1 Semiconductor Group 19 SDA 3302 Family Test Circuit 2 Test Circuit 3 Semiconductor Group 20 SDA 3302 Family Test Circuit 4 Test Circuit 5 Semiconductor Group 21 SDA 3302 Family I2C Bus Timing Diagram Test Circuit 6 Test Circuit 7 Semiconductor Group 22 SDA 3302 Family Application Circuit Semiconductor Group 23 SDA 3302 Family Application Circuit Calculation of Loop Filter Loop bandwidth ωR = √ (Ip × KVCO) / (C1 × P × N) Attenuation: ξ = 0.5 × ωR × R × C1 P = prescaler N = programmable divider Ip = pump current KVCO = tuner slope R, C1 = loop filter Example for channel 47: P = 8, N = 11520, Ip = 100 µA; KVCO = 18.7 MHz/V, R = 22 kΩ, C1 = 180 nF, ωR = 336 Hz, fr = 54 Hz, ξ = 0.67 Standard dimensioning: C2 = C1/5 Note: The high-impedance port outputs and CAS can be blocked against external noise with a capacitor of 1 nF. Semiconductor Group 24 SDA 3302 Family Input Sensitivity I2C Bus Noise Immunity The sinusoidal noise pulses are applied via a coupling capacitance of 33 pF to SCL and SDA inputs. Semiconductor Group 25 SDA 3302 Family Package Outlines GPD05586 Plastic-Package, P-DIP-18-5 (Plastic Dual In-Line Package) GPS05094 Plastic-Package, P-DSO-20-1 (SMD) (Plastic Dual Small Outline Package) Semiconductor Group 26 SDA 3302 Family GPS05119 Plastic-Package, P-DSO-16-1 (SMD) (Plastic Dual Small Outline Package) Sorts of Packing Package outlines for tubes, trays etc. are contained in our Data Book “Package Information” SMD = Surface Mounted Device Semiconductor Group Dimensions in mm 27