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OPA928
  • OPA928
  • OPA928
  • OPA928
  • OPA928

OPA928

ACTIVE

High-voltage femtoampere-input-bias precision e-trim™ operational amplifier with RRIO

Texas Instruments OPA928 Product Info

1 April 2026 1

Parameters

Number of channels

1

Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V)

36

Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V)

4.5

Vos (offset voltage at 25°C) (max) (mV)

0.025

Offset drift (typ) (µV/°C)

0.1

Input bias current (max) (pA)

0.02

GBW (typ) (MHz)

2.5

Features

EMI Hardened

Slew rate (typ) (V/µs)

7.5

Rail-to-rail

In, Out

Iq per channel (typ) (mA)

0.275

Vn at 1 kHz (typ) (nV√Hz)

15

CMRR (typ) (dB)

140

Rating

Catalog

Operating temperature range (°C)

-40 to 125

Iout (typ) (A)

0.1

Architecture

CMOS

Input common mode headroom (to negative supply) (typ) (V)

-0.1

Input common mode headroom (to positive supply) (typ) (V)

-3

Output swing headroom (to negative supply) (typ) (V)

0.05

Output swing headroom (to positive supply) (typ) (V)

0.05

THD + N at 1 kHz (typ) (%)

0.0012

Package

SOIC (D)-8-29.4 mm² 4.9 x 6

Features

  • Ultra-low input bias current:
    • 20fA (tested max) at 25ºC, VS = 16V
    • 20fA (tested max) at 85ºC, VS = 16V
    • 75fA (tested max) at 85ºC, VS = 36V
  • Ultra-low noise:
    • 0.07fA/√Hz at 0.1Hz
    • 15nV/√Hz at 1kHz
  • High dc precision:
    • ±5µV input offset voltage
    • ±0.1µV/°C offset voltage drift
  • Integrated high-precision guard buffer
  • Wide bandwidth: 2.5MHz GBW
  • Low quiescent current: 275µA
  • Wide supply: ±2.25V to ±18V (4.5V to 36V)
  • Rail-to-rail input and output
  • Operating temperature range: –40ºC to +125ºC
  • Industry-standard SOIC package with low leakage pin out
  • Ultra-low input bias current:
    • 20fA (tested max) at 25ºC, VS = 16V
    • 20fA (tested max) at 85ºC, VS = 16V
    • 75fA (tested max) at 85ºC, VS = 36V
  • Ultra-low noise:
    • 0.07fA/√Hz at 0.1Hz
    • 15nV/√Hz at 1kHz
  • High dc precision:
    • ±5µV input offset voltage
    • ±0.1µV/°C offset voltage drift
  • Integrated high-precision guard buffer
  • Wide bandwidth: 2.5MHz GBW
  • Low quiescent current: 275µA
  • Wide supply: ±2.25V to ±18V (4.5V to 36V)
  • Rail-to-rail input and output
  • Operating temperature range: –40ºC to +125ºC
  • Industry-standard SOIC package with low leakage pin out

Description

The OPA928 is a new generation, 36V, femtoampere input bias, e-trim™ operational amplifier. This device offers an ultra-low input bias current of 20fA (max) across the entire industrial temperature range, −40ºC to +85ºC. The OPA928 input bias performance is tested at production at both temperatures.

The near-zero input bias is complemented by outstanding dc precision and ac performance, including rail-to-rail input and output, low offset voltage (±5µV, typical), low offset drift (±0.1µV/°C, typical), and ultra-low current noise (0.07fA/√Hz at 0.1Hz). These features make the OPA928 an excellent choice for low-light photodiode and high source-impedance applications.

The OPA928 features an internal, high precision guard buffer to protect high impedance input traces from undesirable current leakage in sensitive applications. The OPA928 packaging and pin out is designed to support low-leakage circuit designs.

The OPA928 is the next generation OPA128.

The OPA928 is a new generation, 36V, femtoampere input bias, e-trim™ operational amplifier. This device offers an ultra-low input bias current of 20fA (max) across the entire industrial temperature range, −40ºC to +85ºC. The OPA928 input bias performance is tested at production at both temperatures.

The near-zero input bias is complemented by outstanding dc precision and ac performance, including rail-to-rail input and output, low offset voltage (±5µV, typical), low offset drift (±0.1µV/°C, typical), and ultra-low current noise (0.07fA/√Hz at 0.1Hz). These features make the OPA928 an excellent choice for low-light photodiode and high source-impedance applications.

The OPA928 features an internal, high precision guard buffer to protect high impedance input traces from undesirable current leakage in sensitive applications. The OPA928 packaging and pin out is designed to support low-leakage circuit designs.

The OPA928 is the next generation OPA128.

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