Multimedia ICs Video signal switcher for AV amplifiers BA7625 The BA7625 is a video signal switch that contains two five-channel analog multiplexers and wide-band 6dB amplifiers.It designed for use in video cassette recorders. By simply adding transistor buffers to the outputs,it is possible to construct arecord / playback switch for two record / playback VCRs, and three video playback machines (eg.laser disk players). Input switching and VCR record switching can be done independently. The BA7625 has sync-tip clamp inputs which are ideal for switching video signals. •AVApplications amplifiers and video selectors •1)Features 5-input / 3-output switches. 3) Built-in 6dB amplifiers. 4) 5V supply voltage. 2) Sync-tip clamp inputs. •Absolute maximum ratings (Ta = 25°C) Parameter Power supply voltage Symbol Limits Unit VCC 9 V mW Pd 500∗ Operating temperature Topr – 25 ~ + 70 °C Storage temperature Tstg – 55 ~ + 125 °C Power dissipation ∗ Reduced by 5mW for each increase in Ta of 1°C over 25°C. 1 Multimedia ICs BA7625 •Block diagram Monitor OUT 1 GND 2 6dB logic 16 IN1 15 CTL A 14 VOUT1 13 VCC 12 IN2 11 CTL B IN5 3 GND 4 IN4 5 CTL E 6 IN3 7 10 VOUT 2 CTL D 8 9 CTL C 6dB logic •Truth table A B E Monitor OUT C D E VOUT1 ∗ ∗ ∗ D E VOUT2 IN1 L L IN2 H L IN3 L H ∗ ∗ ∗ — L L H L IN3 L H ∗ ∗ ∗ IN1 IN2 L L H L L H H H L IN4 H H L IN4 H H L IN4 H H H IN5 H H H IN5 H H H IN5 Note 1: ∗ indicates "don't care" (H or L). 2 C — IN3 Multimedia ICs BA7625 •Equivalent input / output circuits Waveform IN Input circuit IN1 ~ IN5 Vcc R2 R1 200 1VP-P 200 Q1 Q2 DC 2.0V Q3 + I1 100µA V1 2.7V V IN CTLA ~ CTLE Vcc = 5.0V Vcc R1 R2 High level 3.3V R3 58k 2k 58k Q2 O1 Low level 2.1V Q1 R4 38k Monitor OUT Vcc Q1 R2 R1 100 17k 2VP-P Q4 MONOUT Q3 Q2 DC 0.5V Q5 1.4mA VOUT1 , VOUT2 Vcc VOUT1 I1 R1 Q1 R2 25BUR 48k 100 Q3 O1 DN VOUT Q2 Q4 DC 0.5V I2 600µA 2VP-P 1.4mA 3 Multimedia ICs BA7625 •Electrical characteristics (unless otherwise noted, Ta = 25°C and V Parameter Symbol Min. Operating voltage VCC 4.5 5.0 Supply current ICC — 15.0 Maximum output level Vom 2.6 2.9 Voltage gain GV 5.7 6.2 Interchannel crosstalk CT — – 65 — –3 CTM Mute level Frequency characteristic Gf CTL pin switch level VTH Typ. = 5V) Unit Conditions 5.5 V — 20.0 mA — — VP-P f = 1kHz, THD = 0.5% 6.7 dB f = MHz, VIN = 1VP-P – 45 dB f = 4.43MHz, VIN = 1VP-P – 35 – 25 dB f = 4.43MHz, VIN = 1VP-P 0 3 dB 10MHz / 1MHz, VIN = 1VP-P — 3.3 V 2.2 Max. CC — 䊊Not designed for radiation resistance. •Measurement circuit VCC V 105 75 V 105 75 V VCC V 105 1 105 2 3 1 2 SW1 1 3 SWA 2 3 1 2 SW2 3 SWB 103 VCC VOUT1 4.7µ VOUT2 V VCC V V A 16 15 14 12 13 11 10 1 2 9 3 logic logic 6dB 6dB SWC SWD 1 2 1 2 4 3 5 6 7 8 MONITOR OUT V V SW5 75 V 3 105 1 2 105 2 105 1 SW4 75 V 3 105 VCC SW3 2 1 3 105 105 SWE 1 2 75 V V VCC Fig.1 4 3 3 Multimedia ICs BA7625 •Measurement conditions SW1 SW2 SW3 SW4 SW5 SWA SWB SWC SWD SWE Measurement method ICC 3 3 3 3 3 2 2 2 2 2 — Monitor OUT maximum output level Vom 1MON Vom 2MON Vom 3MON Vom 4MON Vom 5MON 2 3 ↓ ↓ ↓ 3 2 3 ↓ ↓ 3 ↓ 2 3 ↓ 3 ↓ ↓ 2 3 3 ↓ ↓ ↓ 2 3 2 3 2 2 3 3 2 2 2 ∗ ∗ ∗ GV 1MON GV 2MON GV 3MON GV 4MON GV 5MON 2 3 ↓ ↓ ↓ 3 2 3 ↓ ↓ 3 ↓ 2 3 ↓ 3 ↓ ↓ 2 3 3 ↓ ↓ ↓ 2 3 2 3 2 2 3 3 2 2 2 ∗ Monitor OUT voltage gain CT1-2MON CT1-3MON CT1-4MON CT1-5MON 2 ↓ ↓ ↓ 3 ↓ ↓ ↓ 3 ↓ ↓ ↓ 3 ↓ ↓ ↓ 3 ↓ ↓ ↓ 2 3 2 2 3 2 2 2 ∗ ∗ ∗ CT2-1MON CT2-3MON CT2-4MON CT2-5MON 3 ↓ ↓ ↓ 2 ↓ ↓ ↓ 3 ↓ ↓ ↓ 3 ↓ ↓ ↓ 3 ↓ ↓ ↓ 3 3 2 2 3 2 2 2 ∗ ∗ ∗ CT3-1MON CT3-2MON CT3-4MON CT3-5MON 3 ↓ ↓ ↓ 3 ↓ ↓ ↓ 2 ↓ ↓ ↓ 3 ↓ ↓ ↓ 3 ↓ ↓ ↓ 3 2 2 2 3 3 2 2 ∗ ∗ ∗ CT4-1MON CT4-2MON CT4-3MON CT4-5MON 3 ↓ ↓ ↓ 3 ↓ ↓ ↓ 3 ↓ ↓ ↓ 2 ↓ ↓ ↓ 3 ↓ ↓ ↓ 3 2 2 2 3 3 2 2 ∗ ∗ ∗ CT5-1MON CT5-2MON CT5-3MON CT5-4MON 3 ↓ ↓ ↓ 3 ↓ ↓ ↓ 3 ↓ ↓ ↓ 3 ↓ ↓ ↓ 2 ↓ ↓ ↓ 3 2 2 2 3 3 2 2 ∗ ∗ ∗ Monitor OUT frequency characteristic Gf 1MON Gf 2MON Gf 3MON Gf 4MON Gf 5MON 2 3 ↓ ↓ ↓ 3 2 3 ↓ ↓ 3 ↓ 2 3 ↓ 3 ↓ ↓ 2 3 3 ↓ ↓ ↓ 2 3 2 3 2 2 3 3 2 2 2 ∗ ∗ ∗ VOUT1 maximum output level Vom 2OUT1 Vom 3OUT1 Vom 4OUT1 Vom 5OUT1 3 ↓ ↓ ↓ 2 3 ↓ ↓ 3 2 3 ↓ 3 ↓ 2 3 3 ↓ 3 2 ∗ ∗ 2 3 2 2 Parameter Current dissipation Monitor OUT interchannel crosstalk Symbol Switch settings ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ∗ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ 3 2 2 2 ↓ ↓ 3 2 Note 1 ∗ ↓ ↓ 3 2 Note 2 ↓ 3 2 ↓ 3 2 ↓ 3 2 Note 3 ↓ ↓ 3 ↓ ↓ 2 ↓ ↓ 3 2 Note 4 ∗ ↓ 3 2 Note 1 5 Multimedia ICs Parameter Switch settings SW1 SW2 SW3 SW4 SW5 SWA SWB SWC SWD SWE GV 2OUT1 GV 3OUT1 GV 4OUT1 GV 5OUT1 3 ↓ ↓ ↓ 2 3 ↓ ↓ 3 2 3 ↓ 3 ↓ 2 3 3 ↓ 3 2 ∗ ∗ 2 3 2 2 3 2 2 2 ∗ CT1-2OUT1 CT1-3OUT1 CT1-4OUT1 CT1-5OUT1 2 ↓ ↓ ↓ 3 ↓ ↓ ↓ 3 ↓ ↓ ↓ 3 ↓ ↓ ↓ 3 ↓ ↓ ↓ ∗ ∗ 3 3 2 2 3 2 2 2 ∗ CT2-1OUT1 CT2-3OUT1 CT2-4OUT1 CT2-5OUT1 3 ↓ ↓ ↓ 2 ↓ ↓ ↓ 3 ↓ ↓ ↓ 3 ↓ ↓ ↓ 3 ↓ ↓ ↓ ∗ ∗ 3 3 2 2 3 2 2 2 ∗ CT3-1OUT1 CT3-2OUT1 CT3-4OUT1 CT3-5OUT1 3 ↓ ↓ ↓ 3 ↓ ↓ ↓ 2 ↓ ↓ ↓ 3 ↓ ↓ ↓ 3 ↓ ↓ ↓ ∗ ∗ 3 2 2 2 3 3 2 2 ∗ CT4-1OUT1 CT4-2OUT1 CT4-3OUT1 CT4-5OUT1 3 ↓ ↓ ↓ 3 ↓ ↓ ↓ 3 ↓ ↓ ↓ 2 ↓ ↓ ↓ 3 ↓ ↓ ↓ ∗ ∗ 3 2 3 2 3 3 2 2 ∗ CT5-1OUT1 CT5-2OUT1 CT5-3OUT1 CT5-4OUT1 3 ↓ ↓ ↓ 3 ↓ ↓ ↓ 3 ↓ ↓ ↓ 3 ↓ ↓ ↓ 2 ↓ ↓ ↓ ∗ ∗ 3 2 3 2 3 3 2 2 ∗ VOUT1 frequency characteristic Gf 2OUT1 Gf 3OUT1 Gf 4OUT1 Gf 5OUT1 3 ↓ ↓ ↓ 2 3 ↓ ↓ 3 2 3 ↓ 3 ↓ 2 3 3 ↓ ↓ 2 ∗ ∗ 2 3 2 2 3 2 2 2 ∗ VOUT2 maximum output level Vom 1OUT2 Vom 3OUT2 Vom 4OUT2 Vom 5OUT2 2 3 ↓ ↓ 3 2 3 ↓ 3 ↓ ↓ ↓ 3 ↓ 2 3 3 ↓ ↓ 2 ∗ 3 3 2 2 3 2 2 2 ∗ VOUT2 voltage gain GV 1OUT2 GV 3OUT2 GV 4OUT2 GV 5OUT2 2 3 ↓ ↓ 3 2 3 ↓ 3 ↓ ↓ ↓ 3 ↓ 2 3 3 ↓ ↓ 2 ∗ 3 3 2 2 3 2 2 2 ∗ VOUT1 voltage gain VOUT1 interchannel crosstalk 6 Symbol BA7625 ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ∗ ↓ ↓ ↓ ∗ ↓ ↓ ↓ ↓ 3 2 Measurement method Note 2 ↓ 3 2 ↓ 3 2 ↓ 3 2 Note 3 ↓ ↓ 2 ↓ ↓ 3 ↓ 3 2 ↓ 3 2 ↓ 3 2 Note 4 Note 1 Note 2 Multimedia ICs Parameter Symbol BA7625 Switch settings SW1 SW2 SW3 SW4 SW5 SWA SWB SWC SWD SWE CT1-2OUT2 CT1-3OUT2 CT1-4OUT2 CT1-5OUT2 2 ↓ ↓ ↓ 3 ↓ ↓ ↓ 3 ↓ ↓ ↓ 3 ↓ ↓ ↓ 3 ↓ ↓ ↓ ∗ ∗ 2 3 2 2 3 2 2 2 ∗ CT2-1OUT2 CT2-3OUT2 CT2-4OUT2 CT2-5OUT2 3 ↓ ↓ ↓ 2 ↓ ↓ ↓ 3 ↓ ↓ ↓ 3 ↓ ↓ ↓ 3 ↓ ↓ ↓ ∗ ∗ 3 3 2 2 3 2 2 2 ∗ CT3-1OUT2 CT3-2OUT2 CT3-4OUT2 CT3-5OUT2 3 ↓ ↓ ↓ 3 ↓ ↓ ↓ 2 ↓ ↓ ↓ 3 ↓ ↓ ↓ 3 ↓ ↓ ↓ ∗ ∗ 3 2 2 2 3 3 2 2 ∗ CT4-1OUT2 CT4-2OUT2 CT4-3OUT2 CT4-5OUT2 3 ↓ ↓ ↓ 3 ↓ ↓ ↓ 3 ↓ ↓ ↓ 2 ↓ ↓ ↓ 3 ↓ ↓ ↓ ∗ ∗ 3 2 3 2 3 3 2 2 ∗ CT5-1OUT2 CT5-2OUT2 CT5-3OUT2 CT5-4OUT2 3 ↓ ↓ ↓ 3 ↓ ↓ ↓ 3 ↓ ↓ ↓ 3 ↓ ↓ ↓ 2 ↓ ↓ ↓ ∗ ∗ 3 2 3 2 3 3 2 2 ∗ VOUT2 frequency characteristic Gf 1OUT1 Gf 3OUT1 Gf 4OUT1 Gf 5OUT1 2 3 ↓ ↓ 3 3 ↓ ↓ 3 2 3 ↓ 3 ↓ 2 3 3 ↓ ↓ 2 ∗ ∗ 3 3 2 2 3 2 2 2 ∗ Mute level CTM VOUT1 CTM VOUT2 2 ↓ 3 ↓ 3 ↓ 3 ↓ 3 ↓ ∗ ∗ 3 2 3 ↓ ∗ VTH A VTH B VTH C VTH D VTH E 2 3 2 3 ↓ 3 ↓ ↓ ↓ ↓ 3 2 3 2 3 3 ↓ ↓ ↓ 2 3 ↓ ↓ ↓ ↓ 1 3 3 1 ∗ ∗ ∗ CTL switching level VOUT2 interchannel crosstalk ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ∗ ↓ 2 ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ∗ ↓ 2 ↓ 1 3 ∗ ↓ 3 1 ∗ Measurement method ↓ 3 2 ↓ 3 2 ↓ 3 2 Note 3 ↓ ↓ 2 ↓ ↓ 3 ↓ 3 2 ↓ ↓ ↓ ↓ 1 Note 4 Note 5 Note 6 Note 1: Connect a distortion meter to the output, and input a f = 1kHz sine wave. Adjust the input 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 (in dB) is given by GV = 20 log (VOUT / VIN). Note 3: Input a 1VP-P, 4.43MHz sine wave. The interchannel crosstalk (in dB) is given by CT = 20 log (VOUT / VIN) + 6. Note 4: Input 1VP-P, 1MHz and 10MHz sine waves. The frequency characteristic (in dB) is given by Gf = 20 log (VOUT (f = 10MHz) / VOUT (f = 1MHz) ). Note 5: Input a 1VP-P, 4.43MHz sine wave. The mute level is given by CTM = 20 log (VOUT / VIN) + 6 (dB). Note 6: 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 10mVP-P. 7 Multimedia ICs BA7625 •Application example VCC 100Ω + 470µ TV 75Ω MONOUT IN1 + 2.2µ 1 16 OUT VCC GND CTL A 15 3 IN5 VOUT1 14 4 GND VCC 13 100Ω FRONT 2.2µ + AUX A933 0.01µ 2.2µ + 5 IN4 IN2 12 CTL B 11 2.2µ + LD IN3 VOUT2 10 8 CTL D CTL C 9 75Ω F/R CTL REC CTL MON CTL Fig.2 •External dimensions (Units: mm) 19.4 ± 0.3 9 1 8 0.51Min. 3.2 ± 0.2 4.25 ± 0.3 6.5 ± 0.3 16 7.62 0.3 ± 0.1 2.54 0.5 ± 0.1 DIP16 8 0° ~ 15° VTR IN2 75Ω 7 OUT 75Ω 100Ω 470µ + CTL E 47µ 2.2µ VCC 75Ω 6 + 5.0V + + REAR IN1 75 75Ω BS VTR 470µ + 2 75Ω