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| Multimedia ICs Video signal switcher BA7603 / BA7603F The BA7603 and BA7603F are switching ICs developed for use in VCRs. Each contains three two-channel analog multi-plexers. The switches have sync-tip clamped inputs and are ideal for switching video signals. *Applications recorders and televisions Video cassette *Features / 1-output switches. 1) Three 2-input 2) Sync-tip clamped inputs. 3) 5V power supply. 4) Low power consumption (62.5mW Typ.). 5) Excellent frequency characteristics (10MHz, 0dB Typ.). 6) Wide dynamic range (2.9VP-P Typ.). 7) Fast switching speed (50ns Typ.). *Absolute maximum ratings (Ta = 25C) Parameter Power supply voltage Power dissipation Operating temperature Storage temperature Symbol VCC Pd Topr Tstg Limits 9 500 - 40 ~ + 85 - 55 ~ + 125 Unit V mW C C Reduced by 5.0mW for each increase in Ta of 1C over 25C. *Block diagram IN2a CTLa OUTa GND OUTb OUTc CTLc IN2c 1 SWa 2 3 4 SWb 5 6 7 8 16 IN1a 15 GND 14 IN2b 13 VCC 12 CTLb 11 IN1b 10 GND 9 IN1c CTL L H Output IN 2 IN 1 SWc SWa, SWb, SWc: pedestal-clamped input 1 Multimedia ICs BA7603 / BA7603F *Equivalent circuits SWa, SWb, SWc IN VCC R3 22k Q5 R2 4k R7 100 Q9 Q6 I2 0.3mA R12 200 R16 200 R9 200 Q7 Q8 Q10 Q11 R15 200 Q3 R10 100 Q2 Q12 Q1 OUT R1 1k R8 25k I1 0.6mA R17 12k I4 0.6mA I5 1mA R11 100 R13 100 R14 100 CTL VCC R1 50k I2 0.6mA Q1 Q6 R6 25k R2 200 CTL Q3 Q5 Q2 Q4 R5 25k I1 0.25mA R3 400 R4 400 I3 0.06mA 2 Multimedia ICs BA7603 / BA7603F *Electrical characteristics (unless otherwise noted Ta = 25C and VCC = 5V) Parameter Operating voltage Supply current Maximum output level Voltage gain Interchannel crosstalk Frequency characteristics CTL pin switch level Symbol VCC ICC Vom GV CT Gf VTH Min. 4.5 -- 2.7 - 0.5 -- -3 2.0 Typ. 5.0 13.0 2.9 0 - 65 0 2.5 Max. 5.5 20.0 -- 0.5 -- 1 3.0 Unit V mA VP-P dB dB dB V Conditions -- -- f = 1kHz, THD = 0.5% f = 1MHz, VIN = 1VP-P f = 4.43MHz, VIN = 1VP-P 10MHz / 1MHz, V = 1VP-P -- Refer to the measurement circuit given in Fig. 1. *Reference data(reference values) Pin DC voltages Pin No. 1 2 3 4 5 6 7 8 DC voltage 2.05 4.91 0.65 0 0.65 0.65 4.91 2.05 Pin No. 9 10 11 12 13 14 15 16 Units: Vdc DC voltage 2.05 0 2.05 4.91 5.00 2.05 0 2.05 Electrical characteristics Parameter Sync tip clamp level Input impedance (with clamp) Output impedance Min. 0.49 -- -- Typ. 0.65 1.7M 30 Max. 0.80 -- -- Unit Vdc The input coupling capacitor values should be 0.1F to 1F. 3 Multimedia ICs BA7603 / BA7603F *Measurement circuit OSC 50 VCC V 105 50 V V 3 105 1 2 3 1 105 1 2 2 3 105 223 47 / 16 VCC A S2b S3b S1b 16 15 14 13 12 11 10 9 S1a S1c 1 V OSC 105 2 3 105 1 2 3 VOUTa V 50 4 5 VOUTb V VOUTc V OSC 6 7 8 V 1 105 2 3 105 50 S2a S3a S2C 1 105 V OSC 2 3 105 V 1 2 3 S3c V 1 2 3 OSC V 1 105 2 3 105 VCC 50 50 VCC Fig.1 4 Multimedia ICs BA7603 / BA7603F *Measurment conditions Switch settings Parameter Current dissipation IN1a IN2a Maximum IN1b output IN2b level IN1C IN2C IN1a IN2a IN1b Voltage IN2b gain IN1c IN2c IN1a IN2a InterIN1b channel IN2b crosstalk IN1c IN2c IN1a IN2a Frequency IN1b characterIN2b istic IN1c IN2c CTL pin CTLa switching CTLb CTLc level Symbol ICC Vom Vom Vom Vom Vom Vom GV GV GV GV GV GV CT CT CT CT CT CT Gf Gf Gf Gf Gf Gf VTH VTH VTH S1a 2 3 2 2 2 2 2 3 2 2 2 2 2 2 3 2 2 2 2 3 2 2 2 2 2 1 2 2 S2a 2 2 3 2 2 2 2 2 3 2 2 2 2 3 2 2 2 2 2 2 3 2 2 2 2 2 2 2 S3a 2 2 3 2 2 2 2 2 3 2 2 2 2 2 3 2 2 2 2 2 3 2 2 2 2 1 2 2 S1b 2 2 2 3 2 2 2 2 2 3 2 2 2 2 2 2 3 2 2 2 2 3 2 2 2 2 1 2 S2b 2 2 2 2 3 2 2 2 2 2 3 2 2 2 2 3 2 2 2 2 2 2 3 2 2 2 2 2 S3b 2 2 2 2 3 2 2 2 2 2 3 2 2 2 2 2 3 2 2 2 2 2 3 2 2 2 1 2 S1c 2 2 2 2 2 3 2 2 2 2 2 3 2 2 2 2 2 2 3 2 2 2 2 3 2 2 2 1 S2c 2 2 2 2 2 2 3 2 2 2 2 2 3 2 2 2 2 3 2 2 2 2 2 2 3 2 2 2 S3c 2 2 2 2 2 2 3 2 2 2 2 2 3 2 2 2 2 2 3 2 2 2 2 2 3 2 2 1 Measurement method f = 1kHz, THD = 0.5% Note 1 f = 1kHz, V = 1VP-P Note 2 f = 4.43MHz, V = 1VP-P Note 3 f = 10MHz / f = 1MHz, V = 1VP-P Note 4 Note 5 Note 1: Connect a distortion meter to the output, and input a f = 1kHz sine wave. Adjust the output level until the output distortion is 0.5%. This output voltage at this time is the maximum output level Vom (VP-P). Note 2: Input a 1VP-P, 1MHz sine wave. The voltage gain is given by GV = 20 log (VOUT / VIN). Note 3: Input a 1VP-P, 4.43MHz sine wave. The interchannel crosstalk is given by CT = 20 log (VOUT / VIN). Note 4: Input 1VP-P, 1MHz and 10MHz sine waves. The frequency characteristic is given by Gf = 20 log (VOUT (f = 10MHz) / VOUT (f = 10MHz)). Note 5: Input a 1VP-P, 1MHz sine wave. Reduce the CTL pin voltage from VCC. The CTL pin switching level (VTH) is the CTL pin voltage at which the VOUT level drops below 20mVP-P. 5 Multimedia ICs BA7603 / BA7603F *External dimensions (Units: mm) BA7603 BA7603F 10.0 0.2 19.4 0.3 16 9 6.5 0.3 16 6.2 0.3 4.4 0.2 9 7.62 3.2 0.2 4.25 0.3 1 1.5 0.1 8 0.11 0.3 0.1 2.54 0.5 0.1 1.27 0.4 0.1 0.3Min. 0.15 0 ~ 15 DIP16 SOP16 6 0.15 0.1 1 0.51Min. 8 |
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