A7623_15 UTC | Alldatasheet
Document overview
- Manufacturer or author: Provided By ALLDATASHEET.COM(FREE DATASHEET DOWNLOAD SITE)
- PDF pages: 6
Technical content
UNISONIC TECHNOLOGIES CO., LTD A7623 LINEAR INTEGRATED CIRCUIT www.unisonic.com.tw 1 of 6 Copyright © 2005 Unisonic Technologies Co., Ltd QW-R121-014,A 2×75Ω DRIVER IC WITH 3 INTERNAL CIRCUITS DESCRIPTION The UTC A7623 is a 75 Ȥ 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. FEATURES * Triple channels. * Can be directly coupled to the previous circuit. * Each output can drive two loads (75Ȥ2). * Output short circuit protection. SOP-8 *Pb-free plating product number: A7623L ORDERING INFORMATION Order Number Normal Lead Free Plating Package Packing A7623-S08-R A7623L-S08-R SOP-8 Tape Reel A7623-S08-T A7623L-S08-T SOP-8 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
A7623 LINEAR INTEGRATED CIRCUIT UNISONIC TECHNOLOGIES CO., LTD 2 of 6 www.unisonic.com.tw QW-R121-014,A PIN DESCRIPTIONS PIN NO. PIN NAME DESCRIPTION
1 GND Ground connection
2 IN1
3 IN2
4 IN3
Input composite/component video (RGB) signals. The operating input signal level is 0.5V to 3.8V.
5 V CC Power supply
6 OUT3
7 OUT2
8 OUT1
When short to ground a protection circuit operates, and the IC enters power-save mode. BLOCK DIAGRAM GND IN1 IN2 IN3 V CC OUT3 OUT2 OUT1 1 75Ȥ driver 75Ȥ driver 75Ȥ driver
A7623 LINEAR INTEGRATED CIRCUIT UNISONIC TECHNOLOGIES CO., LTD 3 of 6 www.unisonic.com.tw QW-R121-014,A ABSOLUTE MAXIMUM RATINGS (Ta = 25 )Ċ PARAMETER SYMBOL RATINGS UNIT Power Supply Voltage V CC 8.0 V Power Dissipation 550 mW Derating Rate at Ta=25°C PD 5.5 °C/mW Operating Temperature T OPR -25 ~ +75 °C Storage Temperature T STG -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 MIN TYP MAX UNIT Operating Voltage V CC 4.5 5.0 5.5 V Supply Current I CC No signal 25.2 37.8 mA Voltage Gain G V f = 1MHz, sine wave ,V IN = 2.0VP-P -1.0 -0.5 0 dB Maximum Output Level V O(MAX) f = 1kHz, sine wave, THD = 1.0% 2.9 3.4 V P-P Frequency Characteristic C F 10MHz / 1MHz, sine wave ,V IN = 1.0VP-P -3 0 1 dB Inter Channel Crosstalk C T f = 4.43MHz, sine wave ,V IN = 2.0VP-P -60 dB Total Harmonic Distortion THD f = 1kHz, sine wave, V IN = 1.0VP-P 0.1 0.5 % Differential Gain 75Ȥ Drive 1 DG1 0.4 1.0 % Differential Phase 75Ȥ Drive 1 DP1 0.4 1.0 deg Differential Gain 75Ȥ Drive 2 DG2 0.7 2.0 % Differential Phase 75Ȥ Drive 2 DP2 VIN = 2.0VP-P, standard staircase signal 0.7 2.0 Deg
A7623 LINEAR INTEGRATED CIRCUIT UNISONIC TECHNOLOGIES CO., LTD 4 of 6 www.unisonic.com.tw QW-R121-014,A TEST CIRCUIT 75Ȥ driver 75Ȥ driver 75Ȥ driver + 75 470Ȱ 75 + 75 470Ȱ 75 + 75 470Ȱ 75 47ȰF 22nF VCC = 5V 2.1V 600 + 75 1000Ȱ Fig.1 The circuit for driving one 75Ω output load . The circuit for driving two 75Ω output loads is as GND sine wave staircase signal 2.1V 600 sine wave staircase signal 2.1V 600 sine wave staircase signal test point
A7623 LINEAR INTEGRATED CIRCUIT UNISONIC TECHNOLOGIES CO., LTD 5 of 6 www.unisonic.com.tw QW-R121-014,A APPLICATION CIRCUIT 75Ȥ driver 75Ȥ driver 75Ȥ driver 22nF GND Fig.2 47ȰF VCC = 5V +1000Ȱ 75 VIDEO OUT6 VIDEO OUT5 +1000Ȱ 75 VIDEO OUT4 VIDEO OUT3 +1000Ȱ 75 VIDEO OUT2 VIDEO OUT1
A7623 LINEAR INTEGRATED CIRCUIT UNISONIC TECHNOLOGIES CO., LTD 6 of 6 www.unisonic.com.tw QW-R121-014,A TYPICAL CHARACTERISTIC Frequency, f(Hz) Gain, GV (dB) Fig. 3 Frequency Characteristic 100k 1M 100M -40 -20 10M 0 -20 Frequency, f(Hz) Gain, GV (dB) Fig. 4 Crosstalk 100k 10M 100M -80 -60 -40 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. UTC 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 writ ten 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.