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Product Detailed Parameters
- Description：Zero-Drift RRIO CMOS Op-Amp
- Series：-
- Mfr：Analog Technologies
- Package：Tape & Box (TB)
- Amplifier Type：CMOS, Zero-Drift
- Number of Circuits：1
- Output Type：Rail-to-Rail
- Slew Rate：2.5V/µs
- Gain Bandwidth Product：4.3 MHz
- Current - Input Bias：50 pA
- Voltage - Input Offset：20 µV
- Current - Supply：650µA
- Current - Output / Channel：48 mA
- Voltage - Supply Span (Min)：2.7 V
- Voltage - Supply Span (Max)：5.5 V
- Operating Temperature：-40°C ~ 125°C (TA)
- Grade：-
- Qualification：-
- Mounting Type：Surface Mount
- Package / Case：SC-74A, SOT-753
- Supplier Device Package：SOT-23-5
- -3db Bandwidth：-
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Overview
The AT8557/TR is a zero-drift rail-to-rail input/output (RRIO) CMOS operational amplifier manufactured by Analog Technologies. It features a single circuit configuration housed in an SOT-23-5 package. Key electrical specifications include a gain bandwidth product of 4.3 MHz and a slew rate of 2.5 V/µs. The device exhibits low input bias current of 50 pA and a voltage input offset of 20 µV, with a supply current consumption of 650 µA.
Feature Summary
- Zero-drift architecture for high precision applications
- Rail-to-rail input and output capability
- CMOS technology for low power consumption
Applications
- Instrumentation systems
- Buffer amplifier circuits
- Precision signal conditioning
Procurement Notes
Verify the manufacturer designation carefully, as Analog Technologies is distinct from Analog Devices or Maxim Integrated. Confirm the specific suffix /TR indicates tape and reel packaging if required for automated assembly. Ensure the component matches the SOT-23-5 footprint and pinout defined in the official datasheet to prevent integration errors.
Selection Notes
Select this component when low drift and rail-to-rail performance are critical within a small form factor. The 4.3 MHz bandwidth suits moderate-speed applications requiring high accuracy. Consider the 650 µA supply current against system power budgets. Verify compatibility with the required input common-mode range relative to the supply rails.
Part Context
This part belongs to the family of zero-drift operational amplifiers designed for precision analog signal processing. Unlike standard chopper-stabilized amps, it integrates RRIO capabilities, making it suitable for single-supply applications where signal swing near the rails is necessary. It serves as a bridge between general-purpose op-amps and high-end instrumentation amplifiers.
Replacement Considerations
Public confirmed substitute part numbers are not available in the provided documentation. Cross-referencing requires matching the zero-drift, RRIO, and SOT-23-5 package constraints with other manufacturers' portfolios.
