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 consumption. Outputs are stable with capacitive loads of over 1,000 pF with no external compensation. Supply current is less than 500 A per amplifier at 30 V. Internal 500 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 and OP2177 are available in the tiny MSOP 8-lead surface-mount package, while the OP4177 is available in TSSOP-14. Moreover, specified performance in the MSOP/ TSSOP packages is identical to performance in the SOIC package. OPx177 family offers the widest specified temperature range of any high precision amplifier in surface-mount packaging. All versions are fully specified for operation from 40C to +125C for the most demanding operating environments. Applications for these amplifiers include precision diode power measurement, voltage and current level setting, and level detection in optical and wireless transmission systems. Additional applications include line powered and portable instrumentation