FEATURES
• Supply Range: 2.7 V to 36 V, ±1.35 V to ±18 V
• Low Noise: 19 nV/√Hz
• RFI Filtered Inputs
• Input Range Includes the Negative Supply
• Input Range Operates to Positive Supply
• Rail-to-Rail Output
• Gain Bandwidth: 1.2 MHz
• Low Quiescent Current: 110 µA per Amplifier
• High Common-Mode Rejection: 120 dB
• Low Bias Current: 15 pA (Maximum)
• Industry-Standard Packages and micro Packages Available
• Create a Custom Design Using the OPAx170 With the WEBENCH® Power Designer

GENERAL DESCRIPTION

The OPA170, OPA2170, and OPA4170 devices (OPAx170) are a family of 36-V, single-supply,
lownoise operational amplifiers (op amps) that feature micro packages with the ability to operate on supplies
ranging from 2.7 V (±1.35 V) to 36 V (±18 V). They offer good offset, drift, and bandwidth with low
quiescent current. The single, dual, and quad versions all have identical specifications for maximum
design flexibility.

Unlike most op amps, which are specified at only one supply voltage, the OPAx170 family of op amps is
specified from 2.7 V to 36 V. Input signals beyond the supply rails do not cause phase reversal. The
OPAx170 family is stable with capacitive loads up to 300 pF. The input can operate 100 mV below the
negative rail and within 2 V of the positive rail for normal operation. Note that these devices can
operate with full rail-to-rail input 100 mV beyond the positive rail, but with reduced performance within 2 V
of the positive rail. The OPAx170 op amps are specified from –40°C to +125°C.