OPA2325 Precision, 10-MHz, Low-Noise, Low-Power, RRIO, CMOS Zero-Crossover Operational Amplifier | TI.com

OPA2325 (ACTIVE)

Precision, 10-MHz, Low-Noise, Low-Power, RRIO, CMOS Zero-Crossover Operational Amplifier

 

Description

The OPA2325 is a dual, precision, low-voltage complementary metal-oxide semiconductor (CMOS) operational amplifier optimized for very low noise and wide bandwidth while operating on a low quiescent current of only 650 µA.

The OPA2325 features a linear input stage with zero-crossover distortion that delivers excellent common-mode rejection ratio (CMRR) of typically 114 dB over the entire input range. The input common-mode range extends 100 mV beyond the negative and positive supply rails. The output voltage typically swings within 10 mV of the rails.

The zero-crossover distortion, combined with wide bandwidth (10 MHz), high slew rate (5 V/µs), and low noise (9 nV/√Hz), make the OPA2325 a very good successive-approximation register (SAR) analog-to-digital converter (ADC) input driver amplifier. In addition, the OPA2325 has a wide supply-voltage range from 2.2 V to 5.5 V with excellent power-supply rejection ratio (PSRR) over the entire supply range, making the device suitable for precision, low-power applications that run directly from batteries without regulation.



Features

  • Precision with Zero-Crossover Distortion:
    • Low Offset Voltage: 150 µV (maximum)
    • High CMRR: 114 dB
    • Rail-to-Rail I/O
  • Wide Bandwidth: 10 MHz
  • Quiescent Current: 650 µA/ch
  • Single-Supply Voltage Range: 2.2 V to 5.5 V
  • Low Input Bias Current: 0.2 pA
  • Low Noise: 9 nV/√Hz at 10 kHz
  • Slew Rate: 5 V/µs
  • Unity-Gain Stable

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Parametrics Compare all products in Precision op amps (Vos<1mV)

 
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)
Offset drift (Typ) (uV/C)
Iq per channel (Typ) (mA)
Vn at 1 kHz (Typ) (nV/rtHz)
CMRR (Typ) (dB)
Rating
Operating temperature range (C)
Package Group
Package size: mm2:W x L (PKG)
Input bias current (Max) (pA)
Output current (Typ) (mA)
Features
Architecture
OPA2325 OPA2340
2     2    
2.2     2.7    
5.5     5.5    
10     5.5    
5     6    
In
Out    
In
Out    
0.15     0.5    
2     2.5    
0.65     0.75    
10     25    
114     92    
Catalog     Catalog    
-40 to 125     -40 to 85    
SOIC | 8
VSSOP | 8    
PDIP | 8
SOIC | 8
VSSOP | 8    
8SOIC: 29 mm2: 6 x 4.9 (SOIC | 8)
8VSSOP: 15 mm2: 4.9 x 3 (VSSOP | 8)    
See datasheet (PDIP)
8SOIC: 29 mm2: 6 x 4.9 (SOIC | 8)
8VSSOP: 15 mm2: 4.9 x 3 (VSSOP | 8)    
10     10    
30     50    
Zero Crossover    
   
CMOS     CMOS