A623308A-70SIF

UNISONIC TECHNOLOGIES CO., LTD A7623 2×75Ω DRIVER IC WITH 3 INTERNAL CIRCUITS DESCRIPTION The UTC A7623 is a 75Ω driver-IC. It is a follower for video signals. It can be directly coupled to the previous stage because there is no internal bias at the input pin. When output is short to earth the IC enters power-save mode. LINEAR INTEGRATED CIRCUIT SOP-8 FEATURES * Triple channels. * Can be directly coupled to the previous circuit. * Each output can drive two loads (75Ω×2). * Output short circuit protection. *Pb-free plating product number: A7623L ORDERING INFORMATION Order Number Normal Lead Free Plating A7623-S08-R A7623L-S08-R A7623-S08-T A7623L-S08-T Package SOP-8 SOP-8 Packing Tape Reel Tube A7623L-S08-R (1) Packing Type (2) Package Type (3) Lead Plating (1) R: Tape Reel, T: Tube (2) S08: SOP-8 (3) L: Lead Free Plating, Blank: Pb/Sn www.unisonic.com.tw Copyright © 2005 Unisonic Technologies Co., Ltd 1 of 6 QW-R121-014,A A7623 PIN DESCRIPTIONS PIN NO. 1 2 3 4 5 6 7 8 PIN NAME GND IN1 IN2 IN3 VCC OUT3 OUT2 OUT1 LINEAR INTEGRATED CIRCUIT DESCRIPTION Ground connection Direct-coupling input Input composite/component video (RGB) signals. The operating input signal level is 0.5V to 3.8V. Power supply Direct-coupling output When short to ground a protection circuit operates, and the IC enters power-save mode. BLOCK DIAGRAM GND 1 75 Ω driver 8 OUT1 IN1 2 75 Ω driver 7 OUT2 IN2 3 75 Ω driver 6 OUT3 IN3 4 5 VCC UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 2 of 6 QW-R121-014,A A7623 ABSOLUTE MAXIMUM RATINGS (Ta = 25℃) LINEAR INTEGRATED CIRCUIT PARAMETER SYMBOL RATINGS UNIT Power Supply Voltage VCC 8.0 V Power Dissipation 550 mW PD Derating Rate at Ta=25°C 5.5 °C/mW Operating Temperature TOPR -25 ~ +75 °C Storage Temperature TSTG -55 ~ +125 °C Note: Absolute maximum ratings are those values beyond which the device could be permanently damaged. Absolute maximum ratings are stress ratings only and functional device operation is not implied. ELECTRICAL CHARACTERISTICS (Ta = 25°C , VCC = 5V, VIN DC=2.1V and load is two system drive) PARAMETER SYMBOL TEST CONDITIONS Operating Voltage VCC Supply Current ICC No signal Voltage Gain GV f = 1MHz, sine wave ,VIN = 2.0VP-P Maximum Output Level VO(MAX) f = 1kHz, sine wave, THD = 1.0% Frequency Characteristic CF 10MHz / 1MHz, sine wave ,VIN = 1.0VP-P Inter Channel Crosstalk CT f = 4.43MHz, sine wave ,VIN = 2.0VP-P Total Harmonic Distortion THD f = 1kHz, sine wave, VIN = 1.0VP-P Differential Gain 75Ω Drive 1 DG1 Differential Phase 75Ω Drive 1 DP1 VIN = 2.0VP-P, standard staircase signal Differential Gain 75Ω Drive 2 DG2 Differential Phase 75Ω Drive 2 DP2 MIN 4.5 -1.0 2.9 -3 TYP 5.0 25.2 -0.5 3.4 0 -60 0.1 0.4 0.4 0.7 0.7 MAX 5.5 37.8 0 1 0.5 1.0 1.0 2.0 2.0 UNIT V mA dB VP-P dB dB % % deg % Deg UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 3 of 6 QW-R121-014,A A7623 TEST CIRCUIT LINEAR INTEGRATED CIRCUIT test point 600 sine wave staircase signal GND 1 75 Ω driver 8 + 75 75 470μ + 1μ 1k 2.1V 600 2 75 Ω driver 7 + 75 75 470μ 3 75 Ω driver 6 + 75 75 VCC = 5V 470μ sine wave staircase signal + 1μ 1k 2.1V 600 4 5 + 47μF 22nF sine wave staircase signal + 1μ 1k 2.1V The circuit for driving one 75Ω output load. The circuit for driving two 75Ω output loads is as + 1000μ 75 75 75 75 Fig.1 UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 4 of 6 QW-R121-014,A A7623 APPLICATION CIRCUIT LINEAR INTEGRATED CIRCUIT Q1 R1 1000μ + 75 VIDEO OUT1 VIDEO OUT2 VIDEO OUT3 VIDEO OUT4 VIDEO OUT5 VIDEO OUT6 1 GND 75 Ω driver 8 1000μ + 75 2 Q1 75 Ω driver 7 75 75 3 R1 75 Ω driver 6 1000μ + 75 4 5 75 VCC = 5V Q1 R1 + 47μF 22nF Fig.2 UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 5 of 6 QW-R121-014,A A7623 TYPICAL CHARACTERISTIC Fig. 3 Frequency Characteristic LINEAR INTEGRATED CIRCUIT Fig. 4 Crosstalk 20 Gain, G V (dB) 0 Gain, GV (dB) -20 -40 -60 -80 0 -20 -40 100k 1M 10M 100M 0 100k 1M 10M 100M Frequency, f (Hz) Frequency, f (Hz) OPERATION NOTES (1) The input signals are signals such as composite video signals, or component video (RGB) signals. (2) When using direct coupling, keep the input signals in the range: 0.5V to 3.8V. U TC assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all UTC products described or contained herein. UTC products are not designed for use in life support appliances, devices or systems where malfunction of these products can be reasonably expected to result in personal injury. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice. UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 6 of 6 QW-R121-014,A