Precision, 20MHz, 0.9pA Ib, RRIO, CMOS Operational Amplifier - OPA320

OPA320 (ACTIVE)

Precision, 20MHz, 0.9pA Ib, RRIO, CMOS Operational Amplifier

Description

The OPA320 (single) and OPA2320 (dual) are a new generation of precision, low-voltage CMOS operational amplifiers optimized for very low noise and wide bandwidth while operating on a low quiescent current of only 1.45mA.

The OPA320 series is ideal for low-power, single-supply applications. Low-noise (7nV/√Hz) and high-speed operation also make them well-suited for driving sampling analog-to-digital converters (ADCs). Other applications include signal conditioning and sensor amplification.

The OPA320 features a linear input stage with zero-crossover distortion that delivers excellent common-mode rejection ratio (CMRR) of typically 114dB over the full input range. The input common-mode range extends 100mV beyond the negative and positive supply rails. The output voltage typically swings within 10mV of the rails.

In addition, the OPAx320 have a wide supply voltage range from 1.8V to 5.5V with excellent PSRR (106dB) over the entire supply range, making them suitable for precision, low-power applications that run directly from batteries without regulation.

The OPA320 (single version) is available in a SOT23-5 package; the OPA320S shut-down single version is available in an SOT23-6 package. The dual OPA2320 is offered in SO-8, MSOP-8, and DFN-8 packages, and the OPA2320S (dual with shut-down) in an MSOP-10 package.

Features

  • Precision with Zero-Crossover Distortion:
    • Low Offset Voltage: 150µV (max)
    • High CMRR: 114dB
    • Rail-to-Rail I/O
  • Low Input Bias Current: 0.9pA (max)
  • Low Noise: 7nV/√Hz at 10kHz
  • Wide Bandwidth: 20MHz
  • Slew Rate: 10V/µs
  • Quiescent Current: 1.45mA/ch
  • Single-Supply Voltage Range: 1.8V to 5.5V
  • OPA320S, OPA2320S:
    • IQ in Shutdown Mode: 0.1µA
  • Unity-Gain Stable
  • Small Packages:
    • SOT23, MSOP, DFN

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Parametrics Compare all products in Precision Amplifier

 
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)
Additional Features
Offset Drift (Typ) (uV/C)
IIB (Max) (pA)
Io (Typ) (mA)
CMRR (Typ) (dB)
Rating
Operating Temperature Range (C)
Pin/Package
Approx. Price (US$)
OPA320 OPA2320 OPA2320-Q1
1     2     2    
1.8     1.8     1.8    
5.5     5.5     5.5    
20     20     20    
10     10     10    
In
Out    
In
Out    
In
Out    
0.15     0.15     0.15    
1.5     1.5     1.5    
8.5     8.5     8.5    
EMI Hardened
Shutdown    
EMI Hardened
Shutdown    
 
1.5     1.5     1.5    
0.9     0.9     0.9    
65     65     65    
114     114     114    
Catalog     Catalog     Automotive    
-40 to 125     -40 to 125     -40 to 125    
5SOT-23
6SOT-23    
10VSSOP
8SOIC
8SON
8VSSOP    
8VSSOP    
0.80 | 1ku     1.25 | 1ku     1.48 | 1ku    

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