NJM2172 OPERATIONAL AMPLIFIER WITH EVR GENERAL DESCRIPTION PACKAGE OUTLINE The NJM2172 is single supply, dual OP-AMP with electric variable resistor (EVR), which contains buffer amplifier, OP-AMP, reference voltage circuit, EVR and EVR control circuit. + The reference is fixed around 1/2 V level internally, and NJM2172V only required few external parts. The A and B EVR is control separately, and amp drive up to 100 (typ.) load. The NJM2172 is suitable for camcorder, CD, MD, and other audio signal process system. FEATURES + Low Power Supply Voltage V = 2.7 to 5.5V Low Operating Current Icc = 5.0mA typ. A/Bch EVR adjust is separately EVR range -3.0 to -95B Drivability 100 typ. Bipolar Technology Package Outline SSOP14 BLOCK DIAGRAM PIN CONFIGURATION 1: OP A +IN 2: OP A -IN 11 10 3: OP A 14 13 12 9 8 OUT 4: EVR A OUT 5: V A Bch CNT VCA 6: V B CNT + Bch OPAMP VREF AMP Bch EVR AMP 7: V Bch EVR 8: GND Bch EVR Control 9: Vref Ach EVR Control Ach EVR 10:REF IN Ach EVR AMP Ach OPAMP 11:EVR B OUT 12:OP B Ach OUT VCA 13:OP B -IN 14:OP B +IN 1 2 3 4 5 6 7 - 1 - NJM2172 ABSOLUTE MAXIMUM RATING (Ta=25C) PARAMETER RATINGS SYMBOL(UNIT) OTHERS Supply Voltage +7.0 V(V) DD Storage Temperature Range -50 to +150 Tstg (C) Operating Temperature Range -40 to +85 Topr (C) Power Dissipation 300 P (mW) SSOP14ONLY D ERECTRICAL CHARACTERISTICS (V =3.5V, Crefin=10pF,Cref=1, f=1kHz, Ta=25C unless otherwise noted) SUPPLY TEST PARAMETER SYMBOL TEST CONDITION MIN. TYP. MAX. UNIT CIRCUIT Operating Current I RL= - 5.0 7.5 mA 1 CC Reference Voltage Vref RL= 1.45 1.55 1.65 V 1 OP-AMP SECTION TEST PARAMETER SYMBOL TEST CONDITION MIN. TYP. MAX. UNIT CIRCUIT Input Offset Voltage R 10k S V - 1.0 6.0 mV 3 IO Input Bias Current - 100 300 nA 3 I IB Voltage Gain 1 G R 10k 60 80 - dB 3 V1 L Maximum Output -3.0 0 - dBV V THD=1%, RL2.5k 2 Voltage Swing 1 OM1 (Vrms) ( 0.7 ) ( 1.0 ) ( - ) Input Common Mode 0.55 to 2.55 V - - - V - Voltage Range ICM -100 -90 dBV Output Noise Voltage V Rs=600 / A-Weighted - 1 ON1 (Vrms) ( 10.0 ) ( 30.0 ) Common Mode CMR 60 74 - dB 3 Rejection Ratio R 10k S Supply Voltage SVR R 10k 60 80 - dB 3 Rejection Ratio S Gain Bandwidth GB - 2 - MHz - Product - 2 -