TPA3530

Femtoampere Input Bias Current Amplifier

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Overview
Development Resources
Application
Ordering Detail

Overview

The TPA3530 operational amplifier features a femtoampere-level input bias current. It operates from 4.5 V to 16 V (±2.25 V to ±8 V) and features rail-to-rail output swing in addition to an input common-mode range that includes ground. The integrated guard buffer isolates the input pins from leakage in the printed circuit board. It minimizes board component count, and enables easy system design.

The TPA3530 is ideal for portable medical and industrial applications that require low bias current analog front-ends performance such as photodiode transimpedance and chemical sensor interface circuits.

The TPA3530 is available in the SOP8 package and is specified over the industrial temperature range (–40°C to +125°C). The unique pinout is optimized to prevent signals from coupling among the sensitive input pins, the power supplies, and the output pin while enabling easy routing of the guard ring traces.

Status

Production
Rating

Industrial
Channel

1
Supply Voltage (Min)

4.5
Supply Voltage (Max)

16
Iq per channel (Max) (μA)

1400
GBW (Typ) (MHz)

2.1
Slew Rate (Typ) (V/μs)

1.4
Rail-Rail In

No, to V- only
Rail-Rail Out

Yes
Ishort (Typ) (mA)

31
Vos (Max) (mV)

0.1
Offset Drift (Typ) (μV/°C)

2
Ib (typ) (pA)

/
Vn (Typ) (nV/rtHz)

18
Peak Noise at 0.1 to 10Hz (μVpp)

/
Shutdown/Disable

/
Operating Temperature Range (°C)

-40 to 125
Feature

Low Ib
Package

SOIC-8

Development Resources

Documentation

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Documentation
- Data Sheet
- Selection Guide
- Application Note
- Technical Note
- Technical Reference Manual
- Product Brief
- Solution Reference Manual
- User Guide
- Quick Start Guide
- Errata
- Test Report
- Document Name
- Type
- Language
- Date
- Datasheet_TPA3530
  
  Data Sheet
  
  English
  
  05/22/2024
  
  Femtoampere Input Bias Current Amplifier
- Introduction to Latch-up and the Preventive Measures
  
  Technical Note
  
  English
  
  01/19/2024
- Application Tips on ESD-EOS
  
  Technical Note
  
  English
  
  01/19/2024
- Analyzing the Power Supply Design of Operational Amplifiers with Examples
  
  Technical Note
  
  English
  
  01/19/2024
- 3PEAK Analog Products Selection Guide
  
  Selection Guide
  
  English
  
  01/19/2024