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| MITSUMI Pedestal Clamp 2-Input 1-Output 3-Circuit Video Switch MM1389 Pedestal Clamp 2-Input 1-Output 3-Circuit Video Switch Monolithic IC MM1389 Outline This is a video switch IC developed for use in video cameras, with 2-input and 1-output circuits. It has pedestal clamp input, making it ideal for RGB and video signal switching, Features 1. 2. 3. 4. Pedestal clamp input Low current consumption Frequency response Operating power supply voltage 12mA typ.(VCC5V) 10MHz typ. 0dB 4.5~12V Package SOP-16B (MM1389XF) Applications 1. TV 2. VCR 3. Other video equipment Block Diagram Control input truth table SW L OUT IN2a IN2b IN2c IN1a IN1b IN1c H MITSUMI Pedestal Clamp 2-Input 1-Output 3-Circuit Video Switch MM1389 Pin Description Pin no. 1 8 9 11 14 16 Pin name IN2a IN2c IN1c IN1b IN2b IN1a Function Input pin 2SWa Input pin 2SWc Input pin 1SWc Input pin 1SWb Input pin 2SWb Input pin 1SWa Internal equivalent circuit diagram 2 7 12 CTLa CTLb CTLc Switching pin a Switching pin b Switching pin c 3 5 6 OUTa OUTb OUTc Output pin SWa Output pin SWb Output pin SWc 4 15 GND GND CLAMP PULSE GND pin 1 GND pin 2 Clamp pulse input pin 10 13 VCC Power supply voltage pin MITSUMI Pedestal Clamp 2-Input 1-Output 3-Circuit Video Switch MM1389 Absolute Maximum Ratings Item Storage temperature Operating temperature Power supply voltage Allowable loss (Ta=25C) Symbol TSTG TOPR VCC max. Pd Ratings -40~+125 -25~+75 15 350 Units C C V mW Recommended Operating Conditions Item Operating temperature Operating voltage Symbol TOPR VOP Ratings -25~+75 4.5~12.0 Units C V Electrical Characteristics Item Consumption current Voltage gain Frequency characteristic Dynamic range 1 Dynamic range 2 Crosstalk Switch input voltage H Switch input voltage L Clamp pin input voltage H Clamp pin input voltage L (Except where noted therwise, Ta=25C, VCC=5.0V) Measurement conditions Refer to Measuring Circuit Refer to Measuring Circuit Refer to Measuring Circuit Refer to Measuring Circuit Refer to Measuring Circuit Refer to Measuring Circuit Refer to Measuring Circuit Refer to Measuring Circuit Refer to Measuring Circuit Refer to Measuring Circuit 2.1 0.7 2.1 0.7 -0.5 -1 1.40 0.80 Min. Typ. Max. Units 12.0 0 0 1.65 0.95 -70 -60 17.0 +0.5 +1 mA dB dB VP-P VP-P dB V V V V Symbol ID GV FC VD1 VD2 CT VIH VIL VCTH VCTL VD1 : Positive dynamic range (from clamp level) VD2 : Negative dynamic range (from clamp level) MITSUMI Pedestal Clamp 2-Input 1-Output 3-Circuit Video Switch MM1389 Measuring Procedures (Except where noted otherwise, VCC=5.0V, VC1=VCC, VC2=0V, PULSE=VCC, C1~C6=0.1F, impress VB=3.5V when S9 is 2) Switch state Item Consumption current Symbol ID S1 2 1 2 2 2 2 2 1 2 2 2 2 2 1 2 S2 2 2 1 2 2 2 2 2 1 2 2 2 2 2 1 2 2 2 2 2 1 2 2 2 2 2 2 2 1 2 2 2 2 2 S3 2 2 2 1 2 2 2 2 2 1 2 2 2 2 2 1 2 2 2 2 2 1 2 2 2 2 1 2 2 2 2 2 2 2 S4 2 2 2 2 1 2 2 2 2 2 1 2 2 2 2 2 1 2 2 2 2 2 1 2 2 2 2 2 2 1 2 2 2 2 S5 2 2 2 2 2 1 2 2 2 2 2 1 2 2 2 2 2 1 2 2 2 2 2 1 2 2 2 1 2 2 2 2 2 2 S6 2 2 2 2 2 2 1 2 2 2 2 2 1 2 2 2 2 2 1 2 2 2 2 2 1 2 2 2 2 2 1 2 2 2 S7 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 1 1 1 1 1 1 1 1 S8 2 1 1 2 2 3 3 1 1 2 2 3 3 1 1 2 2 3 3 1 1 2 2 3 3 1 2 3 1 2 3 1 2 3 S9 S10~S15 1 2 2 2 2 2 2 2 2 2 2 2 2 1 1 1 1 1 1 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 1 1 1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 1 1 1 1 1 1 1, 2 1, 2 1, 2 1, 2 1, 2 1, 2 1 1 1 Notes Voltage gain GV Frequency characteristic FC VD1: Positive dynamic range (from clamp level) VD2: Negative dynamic range (from clamp level) Dynamic range 1, 2 VD1 VD2 2 2 2 2 1 2 2 2 2 2 1 2 Crosstalk CT Switch input voltage H, L VIH VIL 2 2 2 2 2 2 2 Clamp pin input voltage H, L VCTH VCTL MITSUMI Pedestal Clamp 2-Input 1-Output 3-Circuit Video Switch MM1389 (Except where noted otherwise, VCC=5.0V, VC1=VCC, VC2=0V, PULSE=VCC, C1~C6=0.1F, impress VB=3.5V when S9 is 2) Item Consumption current Symbol ID Measurement conditions Connect a DC ammeter to the VCC pin and measure. The ammeter is shorted for subsequent measurements. Input a 2.0VP-P, 100kHz sine wave to SG, and obtain Voltage gain GV GV from the following formula given TP1 voltage as V1 and TP3 voltage as V2. GV=20Log (V2/V1) dB For the above GV measurement, given TP3 voltage for Frequency characteristic FC 10MHz as V3, FC is obtained from the following formula. FC=20Log (V3/V2) dB Input a video signal to SG and a 5VP-P clamp pulse to PULSE. Given input amplitude on the positive side of clamp level VC VD1 VD2 as VD1IN, and output amplitude as VD1OUT and negative side input amplitude as VD2IN, and output amplitude as VD2OUT, VD2 is obtained from the following formula. VD1 : 20Log (VD1OUT/VD1IN) < VD1IN for-1dB = VD2 : 20Log (VD2OUT/VD2IN) < VD2IN for-1dB = Input a 2.0VP-P, 4.43MHz sine wave to SG, and given Crosstalk CT TP1 voltage as V4 and TP3 voltage as V5, CT is obtained from the following formula. CT=20Log (V5/V4) dB Make S10, S12 and S14 1, and S11, S13 and S15 2. Input a 2.0VP-P, 100kHz sine wave to SG, and raise Switch input voltage H, L VIH VIL gradually from VC1=0V. TP4 voltage when the SG signal appears on TP2 is VIN. Next, reverse S10~S15 settings and lower gradually from VC1=VCC. TP4 voltage when the SG signal appears on TP2 is VIL. Impress 4V on VB and raise gradually from Clamp pin input voltage H, L VCTH VCTL PULSE=0V. TP11 voltage when less than 2.0V appears on TP2 is VCTH. Lower from PULSE=VCC, and TP11 voltage when more than 2.2V appears on TP2 is VCTL. f=4.43MHz V=2.0VP-P 10MHz/100kHz V=2.0VP-P f=100kHz V=2.0VP-P Notes Dynamic range 1, 2 MITSUMI Pedestal Clamp 2-Input 1-Output 3-Circuit Video Switch MM1389 Measuring Circuit MITSUMI Pedestal Clamp 2-Input 1-Output 3-Circuit Video Switch MM1389 Application Circuits |
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