NJＭ2509 VIDEO SUPER INPOSER WITH Y-C MIXER ■ GENERAL DESCRIPTION The NJU2509 is video super imposer, including Y/C mix circuit. Y-signal input terminal have sink-chip clamp function and it is applied to fixed DC level of video signal. Impose voltage is fixed internally to white level and black level, and includes 6dB amplifier. ■ PACKAGE OUTLINE NJM2509V ■ FEATURES • Internal Y/C Mix Circuit • Internal Clamp Circuit (Y Signal), Bias Circuit (C Signal) • Impose voltage fixed internally to white level and black level. • Internal 6dB AMP. (Input : 0.5VP-P Output : 1.0 VP-P) • Package Outline SSOP8 • Bipolar Technology ■ RECOMMENDED OPERATING CONDITION • Operating Voltage V+ 4.5V to 5.1V ■ APPLICATION • Video Camera ■ BLOCK DIAGRAM NJM2509V Ver.2004-02-17 -1- NJＭ2509 ■ ABSOLUTE MAXIMUM RATINGS PARAMETER (Ta = 25ºC) SYMBOL + RATINGS UNIT Supply Voltage V 7.0 V Power Dissipation PD 250 mW Operating Temperature Range Topr -20 to +75 ºC Storage Temperature Range Tstg -40 to +125 ºC (V+ = 4.8V, Ta = 25°C, RL = 10kΩ) ■ ELECTRICAL CHARACTERISTICS PARAMETER Operating Current SYMBOL TEST CONDITION MIN. TYP. MAX. UNIT ICC 5.3 7.0 8.7 mA Clamp Voltage Vcmp 2.4 2.5 2.6 V Bias Voltage Vbias Voltage Gain Frequency Characteristic Background Voltage CHR, VOLTAGE GV GI Vset Vchr Rin Input Resistance Differential Gain Differential Phasa BACKGROUND Switch Change Voltage CHR MUTE Switch Change Voltage Crosstalk 1 Crosstalk 2 Crosstalk 3 Crosstalk 4 DG DP Vch Vcl VchMUTE VclMUTE CT1 CT2 CT3 CT4 Vout / Vin 100kHz, 0.5VP-P Sine Wave 0.5VP-P Sine Wave vo (10MHz)/ vo (100kHz) From Pedestal Level From Pedestal Level Input Cin 0.5VP-P, 10STEP Stair wave 0.5VP-P, 10STEP Stair wave BACKGROUND SW : ON BACKGROUND SW : OFF CHRMUTE SW : ON CHRMUTE SW : OFF Cin→BACKGROUND VOLTAGE (*1) Cin→CHR VOLTAGE (*2) Yin→BACKGROUND VOLTAGE (*1) Yin→CHR VOLTAGE (*1) 2.4 2.5 2.6 V 6.0 -0.7 5.0 65.0 6.3 -0.2 15.0 75.0 6.8 +0.3 20.0 85.0 dB dB IRE IRE - 30 - kΩ 2.4 2.4 - -50 -50 -50 -50 3.0 3.0 0.8 0.8 - deg % V V V V dB dB dB dB *1. Crosstalk : 4.43MHz. 0.5VP-P Sine wave, Vout / Vin -2- Ver.2004-02-17 NJＭ2509 ■ TEST CIRCUIT Ver.2004-02-17 -3- NJＭ2509 (V+ = 4.8V, Ta = 25°C) ■ TERMINLAL EXPLANATION PIN No. UNIT FUNCTION EQUIVALENT CIRCUIT PIN No. UNIT FUNCTION EQUIVALENT CIRCUIT Character signal ON/OFF Switch 1 YIN Input 2.5V clamp 0.5VPP Y-signal or Compozitto signal 5 MUTE Hi Lo Charactor signal OFF Charactor signal ON Character signal Input pin 2 GND GROUND 6 CHR 3 CIN Input 2.5V Bias, 0.5VPP C-signal 7 V+ + Supply voltage 8 OUT Output-1 VPP Composit signal, Impose Voltage Hi Lo White level Composit signal Character signal Input Pin 4 -4- SET H i L o Black level Composit signal Ver.2004-02-17 NJＭ2509 ■ APPLICATION This IC requires 1MΩ resistance between INPUT and GND pin for clamp type input since the minute current causes an unstable pin voltage. [CAUTION] The specifications on this databook are only given for information , without any guarantee as regards either mistakes or omissions. The application circuits in this databook are described only to show representative usages of the product and not intended for the guarantee or permission of any right including the industrial rights. Ver.2004-02-17 -5-