OP1177ARMZ-R7 Audio Power Amplifier IC Precision Amplifiers Low Noise Low Input Bias Current SGL IC

FEATURES

• Low offset voltage: 60 μV maximum
• Very low offset voltage drift: 0.7 μV/°C maximum Low input bias current: 2 nA maximum
• Low noise: 8 nV/√Hz typical
• CMRR, PSRR, and AVO > 120 dB minimum
• Low supply current: 400 μA per amplifier
• Dual supply operation: ±2.5 V to ±15 V
• Unity-gain stable
• No phase reversal
• Inputs internally protected beyond supply voltage

APPLICATIONS

• Wireless base station control circuits Optical network control circuits Instrumentation
• Sensors and controls
• Thermocouples
• Resistor thermal detectors (RTDs) Strain bridges
• Shunt current measurements
• Precision filters

GENERAL DESCRIPTION

The OPx177 family consists of very high precision, single, dual, and quad amplifiers featuring extremely low offset voltage and drift, low input bias current, low noise, and low power consump- tion. Outputs are stable with capacitive loads of over 1000 pF with no external compensation. Supply current is less than 500 μA per amplifier at 30 V. Internal 500 Ω series resistors protect the inputs, allowing input signal levels several volts beyond either supply without phase reversal.

Unlike previous high voltage amplifiers with very low offset voltages, the OP1177 (single) and OP2177 (dual) amplifiers are available in tiny 8-lead surface-mount MSOP and 8-lead narrow SOIC packages. The OP4177 (quad) is available in TSSOP and 14-lead narrow SOIC packages. Moreover, specified performance in the MSOP and the TSSOP is identical to performance in the SOIC package. MSOP and TSSOP are available in tape and reel only.