OPA322 20MHz Low-Noise 1.8V RRIO CMOS Operational Amplifier With Shutdown | TI.com

OPA322 (ACTIVE) 20MHz Low-Noise 1.8V RRIO CMOS Operational Amplifier With Shutdown

 

Description

The OPAx322x series consists of single, dual, and quad-channel CMOS operational amplifiers featuring low noise and rail-to-rail inputs and outputs optimized for low-power, single-supply applications. Specified over a wide supply range of 1.8 V to 5.5 V, the low quiescent current of only 1.5 mA per channel makes these devices well-suited for power-sensitive applications.

The combination of very low noise (8.5 nV√Hz at 1 kHz), high-gain bandwidth (20 MHz), and fast slew rate (10 V/µs) make the OPAx322x family ideal for a wide range of applications, including signal conditioning and sensor amplification requiring high gains. Featuring low THD+N, the OPAx322x series is also excellent for consumer audio applications, particularly for single-supply systems.

The OPAx322S models include a shutdown mode that allow the amplifiers to be switched from normal operation to a standby current that is typically less than 0.1 µA.

The OPA322 (single version) is available in 5-pin SOT-23 and 6-pin SOT-23, while the OPA2322 (dual version) is offered in 8-pin VSSOP, 10-pin VSSOP, 8-pin SOIC, and 8-pin SON packages. The quad version OPA4322 comes in 14-pin TSSOP and 16-pin TSSOP packages. All versions are specified for operation from –40°C to +125°C.

Features

  • Gain Bandwidth: 20 MHz
  • Low Noise: 8.5 nV√Hz at 1 kHz
  • Slew Rate: 10 V/µs
  • Low THD+N: 0.0005%
  • Rail-to-Rail I/O
  • Offset Voltage: 2 mV (maximum)
  • Supply Voltage: 1.8 V to 5.5 V
  • Supply Current: 1.5 mA/ch
    • Shutdown: 0.1 µA/ch
  • Unity-Gain Stable
  • Small Packages:
    • SOT-23, SON, VSSOP, TSSOP

Parametrics

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Part number Order Number of channels (#) Total supply voltage (Min) (+5V=5, +/-5V=10) Total supply voltage (Max) (+5V=5, +/-5V=10) GBW (Typ) (MHz) Slew rate (Typ) (V/us) Rail-to-rail Vos (offset voltage @ 25 C) (Max) (mV) Iq per channel (Typ) (mA) Vn at 1 kHz (Typ) (nV/rtHz) Rating Operating temperature range (C) Package Group Package size: mm2:W x L (PKG) Offset drift (Typ) (uV/C) Features Input bias current (Max) (pA) CMRR (Typ) (dB) Output current (Typ) (mA) Architecture
OPA322 Order now 1     1.8     5.5     20     10     In
Out    
2     1.6     8.5     Catalog     -40 to 125     SOT-23 | 5
SOT-23 | 6    
5SOT-23: 5 mm2: 1.6 x 2.9 (SOT-23 | 5)
6SOT-23: 5 mm2: 1.6 x 2.9 (SOT-23 | 6)    
1.8     Shutdown     10     100     65     CMOS    
OPA2322 Order now 2     1.8     5.5     20     10     In
Out    
2     1.5     8.5     Catalog     -40 to 125     SOIC | 8
SON | 8
VSSOP | 10
VSSOP | 8    
8SOIC: 19 mm2: 3.91 x 4.9 (SOIC | 8)
8SON: 9 mm2: 3 x 3 (SON | 8)
10VSSOP: 9 mm2: 3 x 3 (VSSOP | 10)
8VSSOP: 15 mm2: 4.9 x 3 (VSSOP | 8)    
1.8     Shutdown
Small Size    
10     100     65     CMOS    
OPA4322 Order now 4     1.8     5.5     20     10     In
Out    
2     1.4     8.5     Catalog     -40 to 125     TSSOP | 14
TSSOP | 16    
16TSSOP: 22 mm2: 4.4 x 5 (TSSOP | 16)
14TSSOP: 32 mm2: 6.4 x 5 (TSSOP | 14)    
1.8         10     100     65     CMOS