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AD8237 Instrumentation Amplifier: Pinout, Features and Datasheet

Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps 8-TSSOP, 8-MSOP (0.118, 3.00mm Width) Instrumentation 5V -40°C~125°C AD8237 0.65mm 0.2MHz IC OPAMP INSTR 200KHZ RRO 8MSOP

134

Nov 30, 2021

Sophia Harrison

AD8237 Micropower, Zero-Drift Instrumentation Amplifier

 

Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps 8-TSSOP, 8-MSOP (0.118, 3.00mm Width) Instrumentation 5V -40°C~125°C AD8237 0.65mm 0.2MHz IC OPAMP INSTR 200KHZ RRO 8MSOP

The AD8237 is a micropower, zero drift, rail-to-rail input and output instrumentation amplifier. The AD8237 is an excellent choice for portable systems. The AD8237 has excellent gain accuracy performance that can be preserved at any gain with two ratio-matched resistors. Furthermore, Huge range of Semiconductors, Capacitors, Resistors and IcS in stock. Welcome RFQ.

AD8237ARMZ-R7

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AD8237 Pinout

The following figure is the diagram of AD8237 pinout.

Pinout

 

       Pin No.               Mnemonic                                                       Description
1 BW For high bandwidth mode, connect this pin to +VS, or for low bandwidth mode, connect this pin to −VS. Do not leave this pin floating.
2 ﹢IN Positive Input.
3 ﹣IN Negative Input.
4 ﹣VS Negative Supply.
5 ﹢VS Positive Supply.
6 REF Reference Input.
7 FB Feedback Input.
8 VOUT Output.

Pin Function Descriptions

AD8237 CAD Model

The followings are AD8237 Symbol, Footprint, and 3D Model.

PCB Symbol

 

PCB Footprint

 

3D Model

AD8237 Description

The AD8237 is a micropower, zero drift, rail-to-rail input and output instrumentation amplifier. The relative match of two resistors sets any gain from 1 to 1000. The AD8237 has excellent gain accuracy performance that can be preserved at any gain with two ratio-matched resistors. The AD8237 employs the indirect current feedback architecture to achieve a true rail-to-rail capability. Unlike conventional in-amps, the AD8237 can fully amplify signals with common-mode voltage at or even slightly beyond its supplies. This enables applications with high common-mode voltages to use smaller supplies and save power. The AD8237 is an excellent choice for portable systems. With a minimum supply voltage of 1.8 V, a 115 µA typical supply current, and wide input range, the AD8237 makes full use of a limited power budget, yet offers bandwidth and drift performance suitable for bench-top systems. The AD8237 is available in an 8-lead MSOP package. Performance is specified over the full temperature range of −40°C to +125°C.

This article provides you with a basic overview of the AD8237 Instrumentation Amplifier, including its pin descriptions, features and specifications, etc., to help you quickly understand what AD8237 is.

AD8237 Features

● Gain set with 2 external resistors

   ◆ Can achieve low gain drift at all gains

● Ideal for battery powered instruments

   ◆ Supply current: 115 µA

   ◆ Rail-to-rail input and output

   ◆ Zero input crossover distortion

● Designed for excellent dc performance

   ◆ Minimum CMRR: 106 dB

   ◆ Maximum offset voltage drift: 0.3 µV/°C

   ◆ Maximum gain error: 0.005% (all gains)

   ◆ Maximum gain drift: 0.5 ppm/°C (all gains)

   ◆ Input bias current: 1 nA guaranteed to 125°C

● Bandwidth mode pin (BW) to adjust compensation

● 8 kV HBM ESD rating

● RFI filter on-chip

● Single-supply operation: 1.8 V to 5.5 V

● 8-lead MSOP package

Specifications

Analog Devices Inc. AD8237ARMZ-R7 technical specifications, attributes, parameters and parts with similar specifications to Analog Devices Inc. AD8237ARMZ-R7.

AD8237ARMZ-R7 Tech Specifications

Analog Devices Inc. AD8237ARMZ-R7 technical specifications, attributes, parameters and parts with similar specifications to Analog Devices Inc. AD8237ARMZ-R7.

Product Attribute Attribute Value
Lifecycle StatusPRODUCTION (Last Updated: 3 weeks ago)
Factory Lead Time16 Weeks
Contact PlatingTin
MountSurface Mount
Mounting TypeSurface Mount
Package / Case8-TSSOP, 8-MSOP (0.118, 3.00mm Width)
Number of Pins8Pins
Number of Elements1 Element
Operating Temperature-40°C~125°C
PackagingCut Tape (CT)
JESD-609 Codee3
Pbfree Codeno
Part StatusActive
Moisture Sensitivity Level (MSL)1 (Unlimited)
Number of Terminations8Terminations
Product Attribute Attribute Value
ECCN CodeEAR99
Terminal PositionDUAL
Terminal FormGULL WING
Number of Functions1Function
Supply Voltage5V
Terminal Pitch0.65mm
Base Part NumberAD8237
Pin Count8
Qualification StatusNot Qualified
Output TypeRail-to-Rail
Power Supplies5V
Operating Supply Current115μA
Nominal Supply Current115μA
Slew Rate0.15V/μs
Amplifier TypeInstrumentation
Product Attribute Attribute Value
Common Mode Rejection Ratio106 dB
Current - Input Bias250pA
Voltage - Supply, Single/Dual (±)1.8V~5.5V
Output Current per Channel4mA
Input Offset Voltage (Vos)75μV
Voltage Gain60dB
Supply Voltage Limit-Max6V
Voltage - Input Offset25μV
-3db Bandwidth0.2MHz
Voltage Gain-Nom10
Length3mm
RoHS StatusROHS3 Compliant
Lead FreeContains Lead
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AD8237 Functional Block Diagram

The following is the Block Diagram of AD8237.

Simplified Schematic

AD8237 Equivalent

         Model number           Manufacturer                                                     Description
AD8237ARMZ Analog Devices Inc Micropower, Zero Drift, True Rail-to-Rail Instrumentation Amplifier
AD8237ARMZ-RL Analog Devices Inc Micropower, Zero Drift, True Rail-to-Rail Instrumentation Amplifier

AD8237 Applications

● Bridge amplification

● Pressure measurement

● Medical instrumentation

● Thermocouple interface

● Portable systems

● Current measurement

 

AD8237 Package

The following diagram shows the AD8237 package.

8-Lead Mini Small Outline Package [MSOP]

AD8237 Manufacturer

Analog Devices (NASDAQ: ADI) is a world leader in the design, manufacture, and marketing of a broad portfolio of high performance analog, mixed-signal, and digital signal processing (DSP) integrated circuits (ICs) used in virtually all types of electronic equipment. Since our inception in 1965, we have focused on solving the engineering challenges associated with signal processing in electronic equipment. Used by over 100,000 customers worldwide, our signal processing products play a fundamental role in converting, conditioning, and processing real-world phenomena such as temperature, pressure, sound, light, speed, and motion into electrical signals to be used in a wide array of electronic devices.

 

Datasheet PDF

Download datasheets and manufacturer documentation for Analog Devices Inc. AD8237ARMZ-R7.

AD8237ARMZ-R7 Documents

Download datasheets and manufacturer documentation for AD8237ARMZ-R7

Frequently Asked Questions

What is the essential property of the AD8237?
The AD8237 is a micropower, zero drift, rail-to-rail input and output instrumentation amplifier. The relative match of two resistors sets any gain from 1 to 1000. The AD8237 has excellent gain accuracy performance that can be preserved at any gain with two ratio-matched resistors.
How many amplifiers does the AD8237 consist of?
The AD8237 is based on an indirect current feedback topology consisting of three amplifiers: two matched transconductance amplifiers that convert voltage to current, and one transimpedance amplifier, TIA, that converts current to voltage.
How does the AD8237 achieve true rail-to-rail characteristics?
Using the indirect current feedback topology and ALS, the AD8237 achieves a truly rail-to-rail characteristic. This increases power efficiency in many applications by allowing for power supply reduction.
How does the AD8237 remove out-of-band signals without affecting CMRR at the input impedance and frequency?
The AD8237 includes an RFI filter to remove high frequency out-of-band signals without affecting input impedance and CMRR over frequency. Additionally, there is a bandwidth mode pin to adjust the compensation.
What are the advantages of the AD8237 over most instrumentation amplifiers?
Unlike most instrumentation amplifiers, the relative match of the two gain setting resistors determines the gain accuracy of the AD8237 rather than a single external resistor.
What is the difference between the AD8237’s allowed input range and that of a traditional architecture?
The allowable input range of the AD8237 is much simpler than traditional architectures.
FAQ
What is the essential property of the AD8237?
The AD8237 is a micropower, zero drift, rail-to-rail input and output instrumentation amplifier. The relative match of two resistors sets any gain from 1 to 1000. The AD8237 has excellent gain accuracy performance that can be preserved at any gain with two ratio-matched resistors.
How many amplifiers does the AD8237 consist of?
The AD8237 is based on an indirect current feedback topology consisting of three amplifiers: two matched transconductance amplifiers that convert voltage to current, and one transimpedance amplifier, TIA, that converts current to voltage.
How does the AD8237 achieve true rail-to-rail characteristics?
Using the indirect current feedback topology and ALS, the AD8237 achieves a truly rail-to-rail characteristic. This increases power efficiency in many applications by allowing for power supply reduction.
How does the AD8237 remove out-of-band signals without affecting CMRR at the input impedance and frequency?
The AD8237 includes an RFI filter to remove high frequency out-of-band signals without affecting input impedance and CMRR over frequency. Additionally, there is a bandwidth mode pin to adjust the compensation.
What are the advantages of the AD8237 over most instrumentation amplifiers?
Unlike most instrumentation amplifiers, the relative match of the two gain setting resistors determines the gain accuracy of the AD8237 rather than a single external resistor.
What is the difference between the AD8237’s allowed input range and that of a traditional architecture?
The allowable input range of the AD8237 is much simpler than traditional architectures.

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