OPA171AIDRLR

The OPA171, OPA2171, and OPA4171 (OPAx171) are a series of 36V, single-supply, low-noise operational amplifiers. This series of operational amplifiers can operate within a power supply range of +2.7V (±1.35V) to +36V (±18V). This device comes in a miniature package and offers low offset, drift, and bandwidth while maintaining low quiescent current. The single-channel, dual-channel, and quad-channel versions all have the same technical specifications, maximizing design flexibility. Unlike most operational amplifiers with only one rated power supply voltage, the OPAx171 is rated for a voltage range of +2.7V to +36V. Input signals exceeding the power supply rails do not cause phase reversal. The OPAx171 series remains stable with capacitive loads up to 300pF. The inputs can operate normally 100mV below the negative power supply rail and within 2V of the positive power supply rail. Note that these devices can operate with full rail-to-rail inputs 100mV above the positive power supply rail, but performance is affected when operating within 2V of the positive power supply rail. The OPAx171 series of operational amplifiers are rated for an operating temperature range of -40°C to +125°C and feature the smallest package for 36V operational amplifiers.

Applications

• Tracking amplifiers in power supply modules
• Commercial power inverter amplifiers
• Bridge amplifiers
• Temperature measurement strain gauge amplifiers
• Precision integrators
• Battery-powered instruments
• Test equipment

Key features

• Supply range: +2.7V to +36V, +1.35V to +18V
• Low noise: 14nV/√Hz
• Low offset drift: 0.3μV/°C (typical)
• RFI-filtered inputs
• Input range includes negative supply
• Input range operates to positive supply
• Rail-to-rail output
• Gain bandwidth: 3MHz
• Low quiescent current: 475μA per amplifier
• High common-mode rejection: 120dB (typical)
• Low input bias current: 8pA
• Industry-standard packages: 8-pin SOIC, 8-pin MSOP, 14-pin TSSOP
• Tiny packages: single-channel in SOT553, dual-channel in VSSOP-8