NJM2235 3-INPUT VIDEO SWITCH ■ GENERAL DESCRIPTION The NJM2235 is 3-input video switch for video signal. It has clamp function and so is applied to fixed DC level of video signal. Its operating supply voltage range is 5 to 12V and bandwidth is 10MHz. Crosstalk is 70 dB (at 4.43MHz). ■ PACKAGE OUTLINE ■ FEATURES ● Operating Voltage (+4.75V to +13V) ● 3 Input-1 Output ● Internal Clamp Function ● Wide Operating Supply voltage Range 4.75V to 13V ● Crosstalk 70dB (at 4.43MHz) ● Wide Frequency Range 10MHz ● Muting Function available ● Package Outline DIP-8, DMP-8, SIP-8, SSOP8 ● Bipolar Technology ■ APPLICATION ● VCR Video Camera AV-TV ■ PIN CONFIGURATION NJM2235D NJM2235M NJM2235V NJM2235L Video Disc Player NJM2235L NJM2235D NJM2235M NJM2235V ■ BLOCK DIAGRAM Ver.2011-08-17 ■ INPUT CONTROL SIGNAL – OUTPUT SIGNAL SW 1 SW 2 OUTPUT SIGNAL L L VIN1 H L VIN2 L/H H VIN3 -1- NJM2235 ■ ABSOLUTE MAXIMUM RATINGS PARAMETER (Ta=25°C) SYMBOL + RATINGS UNIT V mW mW mW mW Supply Voltage Power Dissipation V PD Operating Temperature Range Topr 15 (DIP8) 500 (DMP8) 300 (SSOP8) 250 (SIP8) 800 -20 to +75 Storage Temperature Range Tstg - 40 to +125 °C °C (V+=5V, Ta=25°C) ■ ELECTRICAL CHARACTERISTICS PARAMETER SYMBOL TEST CONDITION MIN. TYP. MAX. UNIT 4.75 - 13.0 V - 10.5 14.0 mA Recommended Supply Voltage V+ Operating Current ICC S1=S2=S3=S4=S5=1 Frequency Characteristics Gf2 Vi=2.0Vpp Vo (10Hz)/Vo (100kHz) -1.0 - +1.0 dB Voltage Gain GV Vi=2.5Vpp, 100kHz, Vo/Vi -0.5 - +0.5 dB Differential Gain DG Vi=2Vpp Staircase signal - 0 - % Differential Phase DP Vi=2Vpp Staircase signal - 0 - deg Output Offset Voltage Voff (note 2) -30 - +30 mV Input Clamp Voltage VIC (note 5) - 2.0 - V Crosstalk (1) CT1 Vi=2.0Vpp, 4.43MHz, Vo/Vi (note 3) - -70 - dB Crosstalk (2) CT2 Vi=2.0Vpp, 4.43MHz, Vo/Vi (note 4) - -70 - dB VCH All inside SW : ON 2.4 - - V VCL All inside SW : OFF - - 0.8 V - 10 - Ω Switch Change Voltage Output Impedance RO (note 1): If it is not shown about switch condition, it is tested on three condition below. a) S1=2, S2=S3=S4=S5=1 b) S2=S4=2, S1=S3=S5=1, c) S1=S2=1, S3=S5=2, S4=1, or 2. (note 2): S1=S2=S3=1, Output DC Voltage difference of three mode below. a) S4=S5=1 b) S4=2, S5=1 c) S4=1 or 2, S5=2 (note 3): S5=1, Tested on all combination of S1 to S4 except two below. a) S1=2, S4=1 b) S2=S4=2 (note 4): Tested on all combination of S1 to S4 except one. a) S5=2, S3=2 (note 5): Input clamp voltage is about 2/5 of supply voltage. -2- Ver.2011-08-17 NJM2235 ■ APPLICATION Oscillation Prevention on light loading conditions Recommended under circuit ■ TEST CIRCUIT DC Voltage Each Terminal Typ. on Test Circuit Ta=25°C Terminal Name DC Voltage Ver.2011-08-17 VIN 1 2 5 + V SW 1 - VIN 2 2 5 + V SW 2 - VIN3 2 5 + V V+ - 2 5 VOUT GND + - V -0.7 -3- NJM2235 ■ EQUIVALENT CIRCUIT PIN NO. PIN FUNCTION PIN NO. PIN FUNCTION 1 VIN1 5 VIN 3 (Mute) 2 SW 1 6 V+ 3 VIN2 7 VOUT 4 SW 2 8 GND -4- INSIDE EQUIVALENT CIRCUIT INSIDE EQUIVALENT CIRCUIT Ver.2011-08-17 NJM2235 ■ APPLICATION This IC requires 1MΩ resistance between INPUT and GND pin for clamp type input since the minute current causes an unstable pin voltage. This IC requires 0.1uF capacitor between INPUT and GND, 1MΩ resistance between INPUT and GND for clamp type input at mute mode. [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.2011-08-17 -5-