OPA4325 Texas instruments

OPA4325

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OPA4325

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Описание

The OPA325, OPA2325, and OPA4325 (OPAx325) are precision, low-voltage complementary metal-oxide semiconductor (CMOS) operational amplifiers optimized for very low noise and wide bandwidth, while operating on a low quiescent current of only 650 µA.The OPAx325 feature 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 OPAx325 a very good successive-approximation register (SAR) analog-to-digital converter (ADC) input driver amplifier. In addition, the OPAx325 have 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 an excellent choice for precision, low-power applications that run directly from batteries without regulation.The OPA325 (single-channel version) is available in the SOT23-5 package. The OPA2325 (dual-channel version) is offered in SO-8 and MSOP-8 packages. The OPA4325 (quad-channel version) is available in TSSOP-14 package.

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

Number of channels	4
Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V)	5.5
Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V)	2.2
Vos (offset voltage at 25°C) (max) (mV)	0.15
GBW (typ) (MHz)	10
Features	Zero Crossover
Slew rate (typ) (V/µs)	5
Rail-to-rail	In, Out
Offset drift (typ) (µV/°C)	2
Iq per channel (typ) (mA)	0.65
Vn at 1 kHz (typ) (nV√Hz)	10
CMRR (typ) (dB)	114
Rating	Catalog
Operating temperature range (°C)	-40 to 125
Input bias current (max) (pA)	10
Iout (typ) (A)	0.03
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