OPA2189 Texas instruments

OPA2189

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OPA2189

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Описание

The OPA189, OPA2189, and OPA4189 (OPAx189) high-precision operational amplifiers are ultra-low noise, fast-settling, zero-drift devices that provide rail-to-rail output operation and feature a unique MUX-friendly architecture and controlled start-up system. These features and excellent ac performance, combined with only 0.4 µV of offset voltage and 0.005µV/°C of drift over temperature for the single-channel version, make the OPAx189 a great choice for precision instrumentation, signal measurement, and active filtering applications. Moreover, the MUX-friendly input architecture prevents inrush current when applying large input differential voltages, which improves settling performance in multichannel systems, all while providing robust ESD protection during shipment, handling, and assembly.All versions are specified from –40°C to +125°C.

Ultra-high precision:
- Zero-drift: 0.005 µV/°C (OPA189)
- Ultra-low offset voltage: 3 µV maximum (OPA189)
Excellent dc precision:
- CMRR: 168 dB
- Open-loop gain: 170 dB
Low noise:
- e_n at 1 kHz: 5.2 nV/√Hz
- 0.1-Hz to 10-Hz noise: 0.1 µV_PP
Excellent dynamic performance:
- Gain bandwidth: 14 MHz
- Slew rate: 20 V/µs
- Fast settling: 10-V step, 0.01% in 1.1 µs
Robust design:
- MUX-friendly inputs
- RFI/EMI filtered inputs
Wide supply range: 4.5 V to 36 V
Quiescent current: 1.7 mA (maximum)
Rail-to-rail output
Input includes negative rail

Number of channels	2
Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V)	36
Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V)	4.5
Vos (offset voltage at 25°C) (max) (mV)	0.005
GBW (typ) (MHz)	14
Features	EMI Hardened, High Cload Drive, Zero Drift
Slew rate (typ) (V/µs)	20
Rail-to-rail	In to V-, Out
Offset drift (typ) (µV/°C)	0.006
Iq per channel (typ) (mA)	1.3
Vn at 1 kHz (typ) (nV√Hz)	5.2
CMRR (typ) (dB)	168
Rating	Catalog
Operating temperature range (°C)	-40 to 125
Input bias current (max) (pA)	300
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)	-2.5
Output swing headroom (to negative supply) (typ) (V)	0.02
Output swing headroom (to positive supply) (typ) (V)	-0.02
THD + N at 1 kHz (typ) (%)	0.00006