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OPA172, OPA2172...
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Technical Documents
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Reference Design
OPA172, OPA2172, OPA4172
SBOS618I – DECEMBER 2013 – REVISED MAY 2018
OPAx172 36-V, Single-Supply, 10-MHz, Rail-to-Rail Output Operational
Amplifiers
1 Features
1 Wide Supply Range: +4.5 V to +36 V, ±2.25 V to ±18 V
Low Offset
Voltage: ±0.2 mV Low Offset Drift: ±0.3 µV/°C Gain Bandwidth: 10 MHz Low Input Bias Current: ±8 pA Low Quiescent Current: 1.6 mA per Amplifier Low Noise: 7 nV/√Hz EMI and RFI Filtered Inputs Input Range Includes the Negative Supply Input Range Operates to Positive Supply Rail-to-Rail Output High Common-Mode Rejection: 120 dB Industry-Standard Packages:
– SOIC-8, VSSOP-8, SOIC-14, TSSOP-14 microPackages: Single in SC70, SOT-23,
Dual in WSON-8
2 Applications
Tracking Amplifier in Power Modules Merchant Power Supplies Transducer
Amplifiers Bridge
Amplifiers Temperature Measurements Strain Gauge
Amplifiers Precision Integrators Test Equipment
JFET-Input Low-Noise Amplifier
VCC
V1 15 V
VEE
V2 15 V
VCC
R1 3.9 kŸ
LSK489
R2 3.9 kŸ
VEE
OPA172
++
VCC
VOUT
R3 1.13 kŸ
Q1 Q2
Q3 MMBT4401
R5 300 Ÿ
VCC
R6 27.4 kŸ
Q4 MMBT4401
R4 11.5 Ÿ
VEE
3 Description
The OPA172, OPA2172 and OPA4172 (OPAx172) are a family of 36-V, single-supply, low-noise operational
amplifiers capable of operating on supplies ranging from +4.5 V (±2.25 V) to +36 V (±18 V). This latest addition of high-
voltage CMOS operational
amplifiers, in...