Features

• Supply Voltage: 1.7 V to 3.6 V

• Low Power: Typical 650 nA at 25°C

• Low Offset Voltage: ±30 μV Maximum at 25°C

• Zero Drift: ±0.025 μV/°C

• Rail-to-Rail Input and Output

• Gain Bandwidth Product: 9 kHz

• Slew Rate: 3 V/ms

Applications

• Gas Detection

• Battery Current Sensing

• Portable Medical Equipment

• Portable Glucose Monitors

• Portable RFID Readers and Tags

Description

The TPA551x is the nano-power, zero-drift amplifier with

a maximum 30-μV low-offset voltage and stable frequency

response for the high-precision sensing application that

also requires low standby power.

The TPA551x devices provide rail-to-rail input and output.

The devices have excellent AC performance with 9-kHz

bandwidth, 3-V/ms slew rate while only drawing 650-nA

quiescent current per amplifier.

The TPA5511 and TPA5511U (1-ch version) are offered

in the SOT23-5 and SOT353 (SC70-5) packages.

The TPA5512 (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.