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| NJM2342 QUAD BUFFER for REFERENCE CIRCUIT IC GENERAL DESCRIPTION The NJM2342 is a 4 channel buffer IC packaged in the small TVSP 10. The NJM2342 provides buffered voltage from the external input voltage. The sink-source output configuration effectively absorbs transient response of load changes. Therefore, it is suitable for reference voltage generation for Video DAC, LCD bias voltage and other applications where transient response becomes an issue. PACKAGE OUTLINE NJM2342RB2 FEATURES Quad Buffer internal Sink/Source Output Offset Voltage Operating Voltage Quiescent Current Bipolar Technology Package Outline TVSP10 Vio=1mV typ. 3V to 14V 1mA typ. TVSP10 PIN CONFIGURATION 1 A 2 3 4 B 5 C D 10 9 8 7 6 PIN FUNCTION 1. A OUTPUT 2. A +INPUT 3. V+ 4. B +INPUT 5. B OUTPUT 6. C OUTPUT 7. C +INPUT 8. GND 9. D +INPUT 10. D OUTPUT NJM2342RB2 Ver.2003-06-30 -1- NJM2342 ABSOLUTE MAXIMUM RATINGS (Ta=25C) PARAMETER SYMBOL Supply Voltage V+ Common Mode Input Voltage VIC Power Dissipation PD Operating Temperature Range TOPR Storage Temperature Range TSTG MAXIMUM RATINGS 15 -0.3 +14 (note1) 320 -40 +85 -50 +125 UNIT V V mW C C (note1) When the supply voltage is less than 14V, the absolute maximum input voltage is equal to the supply voltage. ELECTRICAL CHARACTERISTICS (V+=5V,Ta=25C) PARAMETER SYMBOL TEST CONDITION + (note2) Operating Voltage V Output Offset Voltage VOS Input Bias Current IB Lord Regulation 1 V1 VIN+=2.5V, ISOURCE=0 to 30mA Lord Regulation 2 V2 VIN+=2.5V, ISINK=0 to 15mA Input Common Mode VICM ISOURCE=, ISINK=12mA Voltage Range Common Mode Rejection Ratio VIN+=1 to 3.2V CMR Supply Voltage Rejection Ratio SVR V+=3V to 14V Operating Current ICC RL= Slew Rate SR RL=2k, f=1kHz (note2) Input common mode voltage range case to when operating low voltage. TEST CIRCUITS V+ MIN. 3 - - - - 1 3.2 - - - - TYP. - 1 20 0.2 0.5 - 85 100 1.0 0.7 MAX. 14 5 150 15 15 - - - 2.0 - UNIT V mV nA mV mV V dB dB mA V/us A VOS V +INPUT 1/2V+ ICC OUTPUT V VOUT V+ ISOURCE +INPUT OUTPUT ISINK VOUT V -2- Ver.2003-06-30 NJM2342 TYPICAL APPLICATIONS VIN RS R1 IC R2 R IC is Shunt Regulator. VREF=2.5V NJM431 NJM2380/A NJM2390/A VREF=1.25V NJM2373/A NJM2376 NJM2820/21/22 R NJM2342 VOUT1 VOUT2 VOUT3 R VOUT4 R VOUT5 R TYPICAL CHARACTERISTICS Operating Current vs. Operating Voltage Output Offset Voltage vs. Operating Voltage Output Offset Voltage VOS (mV) 6 4 2 0 -2 -4 -6 4 Ach Bch Dch Cch (V + IN 2 Operating Current ICC (mA) 1.5 1 (V + IN =1/2V , Ta=25 C) + o =1/2V+, Ta=25oC) 0.5 0 0 5 10 + Operating Voltage V (V) 15 6 8 10 12 + Operating Voltage V (V) 14 Ver.2003-06-30 -3- NJM2342 TYPICAL CHARACTERISTICS Input Bias Current vs. Operating Voltage 20 Input Bias Current IB (nA) 18 16 14 12 10 Bch Cch (V + IN =1/2V+, Ta=25oC) Dch Ach 4 6 8 10 12 + Operating Voltage V (V) 14 Load Regulation 1 vs. Source Current 0 Load Regulation 1 V1 (mV) -0.5 -1 -1.5 -2 -2.5 -3 0 5 10 15 20 25 30 35 Source Current ISOURCE (mA) 40 (V+=5V, V + =2.5V, IN Load Regulation 2 vs. Sink Current 3 Load Regulation 2 V2 (mV) (V+=5V, V + IN Ta=25oC) Cch Ach Dch =2.5V, Ta=25oC) Bch 2.5 2 1.5 1 0.5 0 0 5 10 15 20 25 (mA) Sink Current I SINK Ach Dch Bch Cch 30 Output Voltage vs. Source Current 4 Output Voltage VO (V) 3.5 3 VIN =3.0V V 2 0 5 + + Output Voltage vs. Sink Current 2 Output Voltage VO (V) 1.5 V 1 V =0.8V IN + VIN =0.7V 0 5 10 15 (mA) Sink Current I SINK 20 + + IN (V =5V, Ta=25 C) VIN =3.5V + + o (V+=5V, Ta=25oC) =1.0V 2.5 IN 0.5 0 =2.5V 40 10 15 20 25 30 35 Source Current ISOURCE (mA) -4- Ver.2003-06-30 NJM2342 TYPICAL CHARACTERISTICS Operating Current vs. Temperature Output Offset Voltage VOS (mV) 3 Operating Current ICC (mA) 2.5 2 (V =5V, V + + IN Output Offset Voltage vs. Temperature 6 4 2 0 -2 -4 -6 -50 -25 0 25 50 75 o =2.5V) (V =5V, V + + IN =2.5V) Dch Cch 1.5 1 Ach Bch 0.5 0 -50 -25 0 25 50 75 100 125 o Temperature Ta ( C) 100 125 Temperature Ta ( C) Input Common Mode Voltage Range vs. Temperature Input Common Mode Voltage Range (V) V 5 4 3 2 1 0 -50 ISINK =12mA -25 0 25 50 75 100 125 o Temperature Ta ( C) Sink Current vs. Temperature 70 Sink Current ISINK (mA) 60 50 40 30 20 10 0 -50 -25 0 25 50 75 100 125 o Temperature Ta ( C) (V =5V, V + + IN (V+=5V) ISOURCE=12mA Input Common Mode Voltage Range Source Current vs. Temperature 70 Source Current ISOURCE (mA) 60 50 40 30 20 10 0 -50 -25 0 25 50 75 100 125 o Temperature Ta ( C) (V =5V, V + + IN ICM =2.5V) =2.5V) Ver.2003-06-30 -5- NJM2342 MEMO [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. -6- Ver.2003-06-30 |
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