NJM2249 3 INPUT VIDEO SWITCH GENERAL DESCRIPTION PACKAGE OUTLINE The NJM2249 is 3-input video switch for video and audio signal. One input terminals has sink-chip clamp function and so it is applied to fixed DC level of video signal. Two other input terminals are transistor base input for luminant signal and so luminant level may be easily fixed by outer circuit. Its operating supply voltage range is 4.75 to 13V NJM2249D NJM2249M and bandwidth is 10MHz. Cross-talk is 70dB (at 4.43MHz). FEATURES + Operating Voltage (V = +4.75V to +13V) 3 Input - 1 Output Internal Clamp Function (V 1) IN Internal Luminance Signal Control Function (V 2, V 3) IN IN NJM2249V NJM2249L Cross - talk 70dB (at 4.43MHz) Wide Frequency Range Package Outline DIP8, DMP8, SIP8, SSOP8 Bipolar Technology APPLICATION VCR, Video Camera, AV-TV, Video Disc Player PIN CONFIGURATION NJM2249L NJM2249D NJM2249M NJM2249V BLOCK DIAGRAM INPUT CONTROL SIGNAL-OUTPUT SIGNAL SW1 SW2 OUTPUT SIGNAL L L V 1 IN H L V 2 IN L / H H V 3 IN Ver.2004-02-17 -1- NJM2249 ABSOLUTE MAXIMUM RATINGS (T = 25C) a PARAMETER SYMBOL RATINGS UNIT + Supply Voltage V 15 V Power Dissipation P (DIP8) 500 mW D (DMP8)300 mW (SSOP8)250 mW (SIP8) 800 mW Operating Temperature Range T -20 to +75 C opr Storage Temperature Range T -40 to +125 C stg + ELECTRICAL CHARACTERISTICS (V = 5V, T = 25C) a PARAMETERS SYMBOLS TEST CONDITIONS MIN. TYP. MAX.UNIT + Recommended Supply Voltage V 4.75 - 13.0 V Operating Current I S1 = S2 = S3 = S4 = S5 = 1 - 10.5 13.0 mA CC Voltage Gain G V = 2.5V , 100kHz, V / V -0.5 - +0.5 dB V 1 P-P O 1 Frequency Characteristics G V = 2.0V , V (10MHz) / V (100MHz) -1.0 0 +1.0 dB f 1 P-P O O Differential Gain DG V = 2V , Staircase signal - 0 - % 1 P-P Differential Phase DP V = 2V , Staircase signal - 0 - deg 1 P-P Cross-talk CT V = 2.0V , 4.43MHz, V / V(Note 1) - -70 - dB 1 P-P O 1 Switch Change Voltage V All inside SW : ON 2.4 - - V CH V All inside SW : OFF - - 0.8 V CL Output Impedance R - 10 - O (Note 1) : Tested on all combination except three below. a) S1 = 2, S4 = S5 = 1 b) S2 = 2, S4 = 2, S5 = 1 c) S3 = 2, S5 = 2 (Note 2) : Unless specified, tested with V 1 = V 2 = 3V. BIAS BIAS (Note 3) : If it is not shown about switch condition, it is tested on three condition below. a) S1 = 2, S2 = S3 = S4 = S5 = 1 b) S1 = 1, S2 = 2, S3 = 1, S4 = 2, S5 = 1 c) S1 = S2 = 1, S3 = 2, S4 = 1 or 2, S5 = 2 + (Note 4) : V 1 clamp voltage is about 2 / 5 of supply voltage (about 2.0V if V = 5V). IN TEST CIRCUIT SPECIAL CARES TO BE TAKEN WHEN APPLICATION Oscillation Prevention on light loading conditions Recommended under circuit. Ver.2004-02-17 - 2 -