OPA344 Low Power, Single-Supply, Rail-To-Rail Operational Amplifiers MicroAmplifier™ Series | TI.com

OPA344 (ACTIVE)

Low Power, Single-Supply, Rail-To-Rail Operational Amplifiers MicroAmplifier™ Series

 

Description

The OPA344 and OPA345 series rail-to-rail CMOS operational amplifiers are designed for precision, low-power, miniature applications. The OPA344 is unity gain stable, while the OPA345 is optimized for gains greater than or equal to five, and has a gain-bandwidth product of 3MHz.

The OPA344 and OPA345 are optimized to operate on a single supply from 2.5V and up to 5.5V with an input common-mode voltage range that extends 300mV beyond the supplies. Quiescent current is only 250µA (max).

Rail-to-rail input and output make them ideal for driving sampling analog-to-digital converters. They are also well suited for general purpose and audio applications and providing I/V conversion at the output of D/A converters. Single, dual and quad versions have identical specs for design flexibility.

A variety of packages are available. All are specified for operation from –40°C to 85°C. A SPICE macromodel for design analysis is available for download from www.ti.com.

Features

  • RAIL-TO-RAIL INPUT
  • RAIL-TO-RAIL OUTPUT (within 1mV)
  • LOW QUIESCENT CURRENT: 150µA typ
  • MicroSIZE PACKAGES
    • SOT23-5
    • MSOP-8
    • TSSOP-14
  • GAIN-BANDWIDTH
    • OPA344: 1MHz, G ≥ 1
    • OPA345: 3MHz, G ≥ 5
  • SLEW RATE
    • OPA344: 0.8V/µs
    • OPA345: 2V/µs
  • THD + NOISE: 0.006%
  • APPLICATIONS
    • PCMCIA CARDS
    • DATA ACQUISITION
    • PROCESS CONTROL
    • AUDIO PROCESSING
    • COMMUNICATIONS
    • ACTIVE FILTERS
    • TEST EQUIPMENT

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Parametrics Compare all products in General-purpose op amps

 
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 @ 25C) (Max) (mV)
Iq per channel (Typ) (mA)
Vn at 1kHz (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
OPA344 OPA2344 OPA4344
1     2     4    
2.5     2.5     2.5    
5.5     5.5     5.5    
1     1     1    
0.8     0.8     0.8    
In
Out    
In
Out    
In
Out    
1     1     1    
0.15     0.15     0.15    
30     30     30    
Catalog     Catalog     Catalog    
-40 to 85     -40 to 85     -40 to 85    
PDIP | 8
SOIC | 8
SOT-23 | 5    
SOIC | 8
VSSOP | 8    
SOIC | 14
TSSOP | 14    
See datasheet (PDIP)
8SOIC: 29 mm2: 6 x 4.9 (SOIC | 8)
5SOT-23: 8 mm2: 2.8 x 2.9 (SOT-23 | 5)    
8SOIC: 29 mm2: 6 x 4.9 (SOIC | 8)
8VSSOP: 15 mm2: 4.9 x 3 (VSSOP | 8)    
14SOIC: 52 mm2: 6 x 8.65 (SOIC | 14)
14TSSOP: 32 mm2: 6.4 x 5 (TSSOP | 14)    
3     3     3    
N/A     N/A     N/A    
1     1     1    
92     92     92    
15     15     15    
CMOS     CMOS     CMOS    

Design tool

Design with OPA344

Filter Type
 Lowpass
 Highpass
 Bandpass
 Bandstop
 
Cutoff Frequency  Hz
Gain  dB
Filter Response
Filter Order