NJM2268 DUAL VIDEO 6dB AMPLIFIER WITH 75 DRIVER GENERAL DESCRIPTION PACKAGE OUTLINE NJM2268 is a dual video 6dB amplifier with 75 drivers for S-VHS VCRs, HI-BAND VCRs, etc..One channel has clamp function that fixes DC level of video signal and another one is bias type. Furthermore it has 75 drivers to be connected to TV monitors directly and sag corrective circuits that prevent the generation of NJM2268D NJM2268M sag with smaller capacitance than ever. Its operating supply voltage is 4.85 to 9V and bandwidth is 7MHz. FEATURES NJM2268V Wide Operating Voltage (4.85 to 9.0V) Dual Channel (Clamp Type, Bias Type) Internal Driver Circuit For 75 Load SAG Corrective Function Wide Frequency Range 7MHz Low Operating Current 14.0mA (Dual) Package Outline DIP8, DMP8, SSOP8 Bipolar Technology RECOMMENDED OPERATING CONDITION + Operating Voltage V 4.85 to 9.0V APPLICATIONS VCR,Video Camera, TV, Video Disc Player BLOCK DIAGRAM Ver.2004-02-17 -1- NJM2268 ABSOLUTE MAXIMUM RATINGS (Ta=25C) PARAMETER SYMBOL RATINGS UNIT + Supply Voltage V 10 V Power Dissipation P (DIP8) 500 mW D (DMP8) 300 mW (SSOP8) 250 mW Operating Temperature Range T -40 to +85 C opr Storage Temperature Range T -40 to +125 C stg + ELECTRICAL CHARACTERISTICS (V =5V, Ta=25C) PARAMETER SYMBOL TEST CONDITION MIN. TYP. MAX. UNIT Operating Current I No Signal - 14.0 18.2 mA CC Voltage Gain G V =1MHz, 1VSinewave 5.7 6.2 6.7 dB V IN P-P Frequency Characteristic G V =1V , Sinewave, 7MHz / 1MHz - - 1.0 dB f IN P-P Differential Gain* DG V =1V , Staircase - 1.0 3.0 % IN P-P Differential Phase* DP V =1V , Staircase - 1.0 3.0 deg IN P-P Crosstalk CT V =4.43MHz, 1V , Sinewave - -70 - dB IN P-P Gain Offset G V =1MHz, 1V , G =V -V - - 0.5 dB CH IN P-P CH OUT1 OUT2 Input Clamp Voltage V 1.79 1.91 2.03 V CL Input Bias Voltage V 2.56 2.84 3.12 V Bt SAG Terminal Gain G 35 45 - dB SAG NOTE: * is applied to clamp type input side only / APPLICATION Oscillation Prevention It is much effective to insert LPF (Cutoff Frequency 70MHz) under light loading conditions (R 1k). L This IC requires 1M resistance between INPUT and GND pin for clamp type input since the minute current causes an unstable pin voltage. Ver.2004-02-17 - 2 -
