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BA7644AN

Rohm

Video signal switcher

Multimedia ICs Video signal switcher BA7644AN The BA7644AN is a four-channel analog multiplexer with mute, designed for...


Rohm

BA7644AN

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Description
Multimedia ICs Video signal switcher BA7644AN The BA7644AN is a four-channel analog multiplexer with mute, designed for use in video cassette recorders. It features a wide dynamic range, and wide operating frequency range, and is suitable for switching audio and video signals. Applications VCR, TV and audio signal switching Features 1) 4-input / 1-output switches. 2) Built-in mute. 3) Wide operating supply voltage range (4.5V to 13.0V). 4) Low power consumption (48mW Typ.). 5) Excellent frequency characteristics (10MHz, 0dB Typ.). 6) Wide dynamic range (3.5VP-P Typ.). 7) High input impedance (20kΩ Typ.). 8) Low interchannel crosstalk ( – 65dB Typ., f = 4.43MHz). Absolute maximum ratings (Ta = 25°C) Parameter Power supply voltage Power dissipation Operating temperature Storage temperature Symbol VCC Pd Topr Tstg Limits 13.5 850∗ – 25 ~ + 75 – 55 ~ + 125 Unit V mW °C °C ∗ Reduced by 8.5mW for each increase in Ta of 1°C over 25°C. Block diagram MUTE Truth table CTL - A L (OPEN) L (OPEN) H H LOGIC CTL - B L (OPEN) H L (OPEN) H CTL - C L (OPEN) L (OPEN) L (OPEN) L (OPEN) H OUT IN1 IN2 IN3 IN4 MUTE ∗ ∗ Either "L (open)" or "H". 5 CTLC 6 IN3 7 VCC 8 IN4 9 GND 10 VOUT ∗ 1 IN1 2 CTLA 3 CTLB 4 IN2 1 Multimedia ICs BA7644AN Equivalent circuits CLAMP INPUT IN Input bias current 1µA (Typ.)∗ Input bias voltage 3.68V (VCC = 5V, Typ.)∗ ∗ Reference value D1 OUTPUT Vcc D2 Vcc Q1 D1 OUT 100 R1 Q2 20k 2mA D2 100µA Q1 R2 Output impedance 20Ω [Typ.]∗ Output DC...




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