ADA4177-2 OVP and EMI Protected, Precision, Low Noise and Bias Current Dual Op Amp

The ADA4177-1 single channel, ADA4177-2 dual channel, and ADA4177-4 quad channel amplifiers feature low offset voltage (2 μV typical) and drift (1 μV/°C maximum), low input bias current, low noise, and low current consumption (500 μA typical). Outputs are stable with capacitive loads of more than 1000 pF with no external compensation.

The inputs of the ADA4177-1, ADA4177-2, and ADA4177-4 set a new standard in precision amplifier robustness, providing input protection against signal excursions 32 V beyond either supply, as well as 70 dB of rejection for electromagnetic interference (EMI) at 1000 MHz.

Applications for this amplifier include sensor signal conditioning (such as thermocouples, RTDs, and strain gages), process control front-end amplifiers, and precision diode power measurement in optical and wireless transmission systems.

The ADA4177-2 and ADA4177-4 operate over the −40°C to +125°C industrial temperature range. The ADA4177-1 and the ADA4177-2 are available in an 8-lead SOIC package and an 8-lead MSOP package. The ADA4177-4 is available in a 14-lead TSSOP and a 14-lead SOIC package.

Applications

Wireless base station control circuits
Optical network control circuits
Instrumentation
Sensors and controls Thermocouples, resistor thermal detectors (RTDs), strain gages, shunt current measurements
Precision filters

Features and Benefits

Low offset voltage: 60 μV maximum at 25°C (8-lead and 14-lead SOIC)

Low offset voltage drift: 1 μV/°C maximum (8-lead and 14-lead SOIC)

Low input bias current:
1 nA maximum at 25°C

Low voltage noise density:
8 nV/√Hz typical at 1 kHz

Large signal voltage gain (AVO): 100 dB minimum over full supply voltage and operating temperature

Input overvoltage protection to 32 V above and below the supply voltage rail

Integrated EMI filter
70 dB typical rejection at 1000 MHz
90 dB typical rejection at 2400 MHz

Rail-to-rail output swing

Low supply current:
500 µA typical per amplifier

Wide bandwidth
Gain bandwidth product (A_V = +100): 3.5 MHz typical
Unity-gain crossover (A_V = +1):
3.5 MHz typical
−3 dB bandwidth (A_V = +1):
6 MHz typical

See data sheet for additional features

Amplifiers

Operational Amplifiers (Op Amps)

SPICE Models

ADA4177 SPICE Macro-Model .CIR

Data Sheets

Document	note
ADA4177-1/ADA4177-2/ADA4177-4: OVP and EMI Protected, Precision, Low Noise and Bias Current Op Amp Data Sheet (Rev. C)	PDF 828.6 K

Application Notes

Document	note
AN-1387: Practical Design Considerations in Applying the ADA4177 Family of Input Overvoltage Protection Operational Amplifiers	PDF 172.94 K

Product Highlight

Document	note
ADA4177 Family - Setting Industry Standards for Robustness	PDF 619.98 K

Technical Books

Document	note

Order Information

Part Number	Package	Packing Qty	Temp Range	Price 100-499	Price 1000+	RoHS
ADA4177-2ARMZ Production	8 ld MSOP	OTH 50	-40 to 125C	2.01	1.53	Y
ADA4177-2ARMZ-R7 Production	8 ld MSOP	REEL 1000	-40 to 125C	0	1.53	Y
ADA4177-2ARMZ-RL Production	8 ld MSOP	REEL 3000	-40 to 125C	0	1.53	Y
ADA4177-2ARZ Production	8 ld SOIC	OTH 98	-40 to 125C	2.01	1.53	Y
ADA4177-2ARZ-R7 Production	8 ld SOIC	REEL 1000	-40 to 125C	0	1.53	Y
ADA4177-2ARZ-RL Production	8 ld SOIC	REEL 2500	-40 to 125C	0	1.53	Y

Evaluation Boards

Part Number	Description	Price	RoHS
EVAL-PRAOPAMP-2CPZ	Dual CP-8 lead LFCSP Evaluation Board	20.19	Y
EVAL-PRAOPAMP-2RMZ	Dual RM-8 lead MSOP Evaluation Board	20.19	Y
EVAL-PRAOPAMP-2RZ	Dual R-8 lead SOIC Evaluation Board	20.19	Y