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OPA2320AIDRGR

Dual, precision, zero-crossover, 20-MHz, 0.9-pA Ib, RRIO, CMOS operational amplifier

Manufacturer:

TI
Mfr.Part #:

OPA2320AIDRGR
Datasheet:

OPA2320AIDRGR Datasheet (PDF)
Number of channels:

2
Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V):

5.5
Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V):

1.8
Vos (offset voltage at 25°C) (max) (mV):

0.15
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OPA2320AIDRGR General 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 1.45 mA.

The OPA320 series is ideal for low-power, single- supply applications. Low-noise (7 nV/√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 114 dB over the full 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.

In addition, the OPAx320 has a wide supply voltage range from 1.8 V to 5.5 V with excellent PSRR (106 dB) 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 5-pin SOT23 package; the OPA320S shutdown single version is available in an 6-pin SOT23 package. The dual OPA2320 is offered in 8-pin SOIC, VSSOP, and SON packages, and the OPA2320S (dual with shutdown) in a 10-pin VSSOP package.

Key Features

Precision with Zero-Crossover Distortion:
- Low Offset Voltage: 150 µV (Maximum)
- High CMRR: 114 dB
- Rail-to-Rail I/O
Low Input Bias Current: 0.9 pA (Maximum)
Low Noise: 7 nV/√Hz at 10 kHz
Wide Bandwidth: 20 MHz
Slew Rate: 10 V/µs
Quiescent Current: 1.45 mA/Ch
Single-Supply Voltage Range: 1.8 V to 5.5 V
OPA320S and OPA2320S:
- IQ in Shutdown Mode: 0.1 µA
Unity-Gain Stable
Small Packages:
- SOT-23, VSSOP, SON, and SOIC

Specifications

Number of channels	2	Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V)	5.5
Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V)	1.8	Vos (offset voltage at 25°C) (max) (mV)	0.15
GBW (typ) (MHz)	20	Features	EMI Hardened, Shutdown, Small Size, Zero Crossover
Slew rate (typ) (V/µs)	10	Rail-to-rail	In, Out
Offset drift (typ) (µV/°C)	1.5	Iq per channel (typ) (mA)	1.5
Vn at 1 kHz (typ) (nV√Hz)	8.5	CMRR (typ) (dB)	114
Rating	Catalog	Operating temperature range (°C)	-40 to 125
Input bias current (max) (pA)	0.9	Iout (typ) (A)	0.065
Architecture	CMOS	Input common mode headroom (to negative supply) (typ) (V)	-0.1
Input common mode headroom (to positive supply) (typ) (V)	0.1	Output swing headroom (to negative supply) (typ) (V)	0.01
Output swing headroom (to positive supply) (typ) (V)	-0.01	THD + N at 1 kHz (typ) (%)	0.0005