Features

• Supply Voltage: 1.7 V to 3.6 V

• Low Power: 15 μA at 25°C (Max)

• Low Offset Voltage: ±30 μV at 25°C (Max)

• Zero Drift: ±0.025 μV/°C

• Rail-to-Rail Input and Output

• Gain Bandwidth Product: 78 kHz

• Slew Rate: 20 V/ms

Applications

• Gas Detection

• Battery Current Sensing

• Portable Medical Equipment

• Portable Glucose Monitors

• Portable RFID Readers and Tags

Description

The TPA552x is a series of low-power, zero-drift

amplifiers with maximum 30-μV low-offset voltage and

stable frequency response for the high-precision sensing

application that also requires low standby power.

The TPA552x devices provide rail-to-rail input and output.

The devices have excellent AC performance with 78-kHz

bandwidth, 20-V/ms slew rate while only drawing 9.8-μA

quiescent current per amplifier.

The TPA5521 and TPA5521U (1-ch version) are offered

in the SOT23-5, DFN1×1.4-4, and SOT353 (SC70-5)

packages. The TPA5522 (2-ch version) is available in the

SOP8, TSSOP8, MSOP8, DFN1.5X1.5-8, and DFN2X2-8

packages. All versions can be operated over the industrial

temperature range from −40°C to +125°C.