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LM321
  • LM321
  • LM321
  • LM321
  • LM321

LM321

ACTIVE

Single, 30-V, 1-MHz operational amplifier

Texas Instruments LM321 Product Info

1 April 2026 0

Parameters

Number of channels

1

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

30

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

3

Rail-to-rail

In to V-

GBW (typ) (MHz)

1

Slew rate (typ) (V/µs)

0.5

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

7

Iq per channel (typ) (mA)

0.45

Vn at 1 kHz (typ) (nV√Hz)

40

Rating

Catalog

Operating temperature range (°C)

-40 to 85

Offset drift (typ) (µV/°C)

7

Input bias current (max) (pA)

250000

CMRR (typ) (dB)

85

Iout (typ) (A)

0.02

Architecture

Bipolar

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

0

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

-1.5

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

0.005

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

-2

Package

SOT-23 (DBV)-5-8.12 mm² 2.9 x 2.8

Features

  • (VCC = 5 V, TA = 25°C.
    Typical values unless specified.)
  • Gain-Bandwidth Product 1 MHz
  • Low Supply Current 430 µA
  • Low Input Bias Current 45 nA
  • Wide Supply Voltage Range 3 V to 32 V
  • Stable With High Capacitive Loads
  • Single Version of LM324
  • (VCC = 5 V, TA = 25°C.
    Typical values unless specified.)
  • Gain-Bandwidth Product 1 MHz
  • Low Supply Current 430 µA
  • Low Input Bias Current 45 nA
  • Wide Supply Voltage Range 3 V to 32 V
  • Stable With High Capacitive Loads
  • Single Version of LM324

Description

The LM321 brings performance and economy to low power systems. With a high unity gain frequency and a specified 0.4-V/µs slew rate, the quiescent current is only 430-µA/amplifier (5 V). The input common mode range includes ground and therefore the device is able to operate in single supply applications as well as in dual supply applications. It is also capable of comfortably driving large capacitive loads.

The LM321 is available in the SOT-23 package. Overall the LM321 is a low power, wide supply range performance operational amplifier that can be designed into a wide range of applications at an economical price without sacrificing valuable board space.

The LM321 brings performance and economy to low power systems. With a high unity gain frequency and a specified 0.4-V/µs slew rate, the quiescent current is only 430-µA/amplifier (5 V). The input common mode range includes ground and therefore the device is able to operate in single supply applications as well as in dual supply applications. It is also capable of comfortably driving large capacitive loads.

The LM321 is available in the SOT-23 package. Overall the LM321 is a low power, wide supply range performance operational amplifier that can be designed into a wide range of applications at an economical price without sacrificing valuable board space.

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