OP221

Low Power Dual Operational Amplifier, Single or Dual Supply

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Not Recommended for New Designs

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Alternative Parts

AD8622

Lower supply current, lower noise and rail-to-rail output with smaller package availability

Overview

Features and Benefits
Product Details

Features and Benefits

Excellent TCV_OS Match, 2 µV/°C Max
Low Input Offset Voltage, 150 µV Max
Low Supply Current, 550 µA Max
Single Supply Operation, 5 V to 30 V
Low Input Offset Voltage Drift, 0.75 µV/°C

High Open-Loop Gain, 1500 V/mV Min
High PSRR, 3 µV/V
Wide Common-Mode Voltage Range, V– to within 1.5 V of V+
Pin Compatible with 1458, LM158, LM2904
Available in Die Form

Product Details

The OP221 is a monolithic dual operational amplifier that can be used either in single or dual supply operation. The wide supply voltage range, wide input voltage range, and low supply current drain of the OP221 make it well-suited for operation from batteries or unregulated power supplies.

The excellent specifications of the individual amplifiers combined with the tight matching and temperature tracking between channels provided high performance in instrumentation amplifier designs. The individual amplifiers feature extremely low input offset voltage, low offset voltage drift, low noise voltage, and low bias current. They are fully compensated and protected.

Matching between channels is provided on all critical parameters including input offset voltage, tracking of offset voltage vs. temperature, non-inverting bias currents, and common-mode rejection.

Product Categories

Amplifiers
- High Voltage Op Amps ≥12V

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Product Lifecycle Not Recommended for New Designs

This designates products ADI does not recommend broadly for new designs.

Evaluation Kits (1)

EVAL-OPAMP-2

EVAL-OPAMP-2 Evaluation Board

EVAL-OPAMP-2

View Detailed Evaluation Kit Information

The universal precision op amp evaluation boards have been designed and optimized for many circuit configurations allowing the users to best suit their applications. These boards are all RoHs compliant. See references below on what board to order by lead count and package.

EVAL-PRAOPAMP-2CPZ (dual 8-lead LFCSP) CP-8
EVAL-PRAOPAMP-2RMZ (dual 8-lead MSOP) RM-8
EVAL-PRAOPAMP-2RZ (dual 8-lead SOIC) R-8

Documentation & Resources

Data Sheet

OP221: Dual Low Power Operational Amplifier, Single or Dual Supply Data Sheet (Rev. C)
10/30/1981
PDF

Application Note

AN-112: Single Resistor Controls Wien Bridge Oscillator Frequency
10/21/2002
PDF
AN-21: 4-20 mA Digital-to-Process Current Transmitter
10/16/2002
PDF

Tools & Simulations

SPICE Model

OP221 SPICE Macro Models

CIR

OP221 SPICE Macro Model Rev. A, 9/91

CIR

OP221A SPICE Macro Model Rev. A, 9/91

CIR

OP221B SPICE Macro Model Rev. A, 9/91

CIR

OP221C SPICE Macro Model Rev. A, 9/91

CIR

OP221E SPICE Macro Model Rev. A, 9/91

CIR

OP221G SPICE Macro Model Rev. A, 9/91

Support & Discussions

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Evaluation Boards

Pricing displayed is based on 1-piece.

Up to two boards can be purchased through Analog.com. To order more than two, please purchase through one of our listed distributors.

Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.