OVP and EMI Protected, Precision,
Low Noise and Bias Current Op Amps
Data Sheet
ADA4177-1/ADA4177-2/ADA4177-4
FEATURES PIN CONNECTION DIAGRAM
Low offset voltage: 60 V maximum at 25C (8-lead and OUT A 1 8 V+
ADA4177-2
IN A 2 7 OUT B
14-lead SOIC)
TOP VIEW
+IN A 3 6 IN B
(Not to Scale)
Low offset voltage drift: 1 V/C maximum (8-lead and
V 4 5 +IN B
14-lead SOIC)
Low input bias current: 1 nA maximum at 25C Figure 1. ADA4177-2, for Additional Packages and Models, See the Pin
Configurations and Function Descriptions Section
Low voltage noise density: 8 nV/Hz typical at 1 kHz
Large signal voltage gain (A ): 100 dB minimum over full
VO
supply voltage and operating temperature
Input overvoltage protection to 32 V above and below the
supply voltage rail
Integrated EMI filter
Applications for these amplifiers include sensor signal conditioning
70 dB typical rejection at 1000 MHz
(such as thermocouples, resistor thermal detectors (RTDs), and
90 dB typical rejection at 2400 MHz
strain gages), process control front-end amplifiers, and
Rail-to-rail output swing
precision diode power measurement in optical and wireless
Low supply current: 500 A typical per amplifier
transmission systems.
Wide bandwidth
The ADA4177-1/ADA4177-2/ADA4177-4 operate over the
Gain bandwidth product (A = 100): 3.5 MHz typical
V
40C to +125C industrial temperature range. The ADA4177-1/
Unity-gain crossover (A = 1): 3.5 MHz typical
V
ADA4177-2 are available in an 8-lead SOIC package and an 8-lead
3 dB bandwidth (A = 1): 6 MHz typical
V
MSOP package. The ADA4177-4 is available in a 14-lead TSSOP
Dual-supply operation
and a 14-lead SOIC package.
Specified at 5 V to 15 V, operates over 2.5 V to 18 V
12
Unity-gain stable
10
No phase reversal
8
Long-term offset voltage drift (10,000 hours): 2 V typical
V = 15V
SY
6
Temperature hysteresis: 2 V typical
4
APPLICATIONS
2
Wireless base station control circuits
0
Optical network control circuits
2
Instrumentation
4
Sensors and controls
6
Thermocouples, RTDs, strain gages, shunt current
8
measurements
10
50 30 10 10 30 50
GENERAL DESCRIPTION
V (V)
IN
The ADA4177-1 single-channel, ADA4177-2 dual-channel, and
Figure 2. Overvoltage Current Limiting, Voltage Follower Configuration
ADA4177-4 quad-channel amplifiers feature low offset voltage
1
(2 V typical) and drift (1 V/C maximum), low input bias Table 1. Evolution of Protected Input Op Amps by Generation
current, low noise, and low current consumption (500 A
Gen. 1, Gen. 2, Gen. 3, Gen. 4 Gen. 5, OVP
OVP (10 V) OVP (25 V) OVP (32 V) EMI Filters (32 V) + EMI
typical). Outputs are stable with capacitive loads of more than
OP191 ADA4091-2 ADA4096-2 AD8657 ADA4177-1
1000 pF with no external compensation.
OP291 ADA4091-4 ADA4096-4 AD8659 ADA4177-2
The inputs of the ADA4177-1/ADA4177-2/ADA4177-4 feature
OP491 ADA4092-4 AD8546 ADA4177-4
outstanding precision amplifier robustness, providing input
AD8548
protection against signal excursions 32 V beyond either supply,
ADA4661-2
as well as 70 dB of rejection for electromagnetic interference (EMI) ADA4666-2
1
at 1000 MHz.
Gen. means generation.
Rev. E Document Feedback
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INPUT BIAS CURRENT (mA)
12282-001
12282-446ADA4177-1/ADA4177-2/ADA4177-4 Data Sheet
TABLE OF CONTENTS
Features .............................................................................................. 1 Applications Information .............................................................. 26
Applications ....................................................................................... 1 Active Overvoltage Protection ................................................. 26
General Description ......................................................................... 1 Limiting Overvoltage Current Out of the Positive Supply Pin
....................................................................................................... 27
Pin Connection Diagram ................................................................ 1
EMI Protection ........................................................................... 28
Revision History ............................................................................... 3
Self Heating ................................................................................. 28
Specifications ..................................................................................... 4
Using the ADA4177-1/ADA4177-2/ADA4177-4 as a
Electrical Characteristics, 5 V .................................................. 4
Comparator ................................................................................. 28
Electrical Characteristics, 15 V ................................................ 6
Output Phase Reversal ............................................................... 29
Absolute Maximum Ratings ....................................................... 8
Proper Printed Circuit Board (PCB) Layout .......................... 29
Maximum Power Dissipation ..................................................... 8
Long-Term Drift ......................................................................... 29
Thermal Resistance ...................................................................... 8
Temperature Hysteresis ............................................................. 30
ESD Caution .................................................................................. 8
Outline Dimensions ....................................................................... 31
Pin Configurations and Function Descriptions ........................... 9
Ordering Guide .......................................................................... 33
Typical Performance Characteristics ........................................... 12
Theory of Operation ...................................................................... 25
Rev. E | Page 2 of 33