회사 블로그 Mingjiada Electronics Supplies Brand-New and Original AD8227: Wide-Supply-Rail-to-Rail Instrumentation Amplifier for Industrial Sensors and Medical Equipment

Shenzhen Mingjiada Electronics Co., Ltd. is a specialist supplier of electronic components, offering brand-new, genuine Analog Devices (ADI) AD8227 wide-range rail-to-rail output instrumentation amplifiers from stock.

AD8227 Full Part Number

AD8227BRMZ

AD8227 Product Overview

The AD8227 is a wide-voltage-range instrumentation amplifier from ADI. Its gain can be set via a single external resistor, with a gain range of 5 to 1000. The device supports single-supply operation from 2.2 V to 36 V and dual-supply operation from ±1.5 V to ±18 V. a rail-to-rail output architecture, with input voltages capable of falling below ground potential. It can amplify weak differential signals close to ground potential even in single-supply systems. The input features built-in overvoltage protection, capable of withstanding input voltages higher than the supply rails, making it suitable for extracting small signals from sensors in complex electromagnetic environments in industrial field applications. It operates over a temperature range of –40°C to +125°C and is available in two package options, SOIC-8 and MSOP-8, suitable for high-density, multi-channel PCB layout designs.

AD8227 Specifications

- Amplifier type: Instrumentation amplifier (In-Amp)

- Gain range: 5 to 1000 (set by a single external resistor)

- Supply voltage: Single supply 2.2 V–36 V; dual supply ±1.5 V to ±18 V

- –3 dB bandwidth: 250 kHz (G = 5) Analog Dev...

- Common-mode rejection ratio (CMRR): 100 dB minimum (Grade B, G = 5)

- Input voltage noise: 24 nV/√Hz

- Quiescent supply current: 350 μA typical

- Input offset voltage: 200 μV

- Slew rate: 0.8 V/μs

- Output configuration: Rail-to-rail output

- Operating temperature: –40 °C to +125 °C

- Package: SOIC-8, MSOP-8

- Input protection: Withstands ±35 V input overvoltage (under ±5 V supply conditions)

Key Features and Benefits of the AD8227

1. Ideal for industrial sensor signal conditioning

In industrial environments, pressure sensors, temperature sensors (thermocouples/RTDs), load cells and strain gauges typically produce weak output signals that are often accompanied by significant common-mode noise. The AD8227’s high common-mode rejection ratio (CMRR) (minimum 100 dB at G=5) effectively suppresses common-mode interference from industrial equipment such as motors and frequency converters, enabling precise extraction of differential signals. Its ±35 V overvoltage protection capability further safeguards the system against sensor wiring errors or power supply surges.

2. A Reliable Partner for Front-End Amplification in Medical Equipment

Medical instruments such as portable electrocardiographs (ECGs), blood pressure monitors and electroencephalography (EEG) recording devices place extremely high demands on signal integrity. The AD8227’s low noise figure of 24 nV/√Hz and low offset voltage of 200 µV ensure that bioelectrical signals remain undistorted during amplification. Meanwhile, the low quiescent current of 350 µA extends the battery life of battery-powered medical devices, whilst the rail-to-rail output guarantees full-scale accuracy during ADC sampling.

3. Flexible Adaptation to a Wide Range of Power Supply Systems

Whether for battery-powered, low-voltage portable devices operating at 2.2 V or industrial field applications with 18 V dual-supply systems, the AD8227 offers support (2.2 V to 36 V single supply or ±1.5 V to ±18 V dual supply). A single device meets the requirements of multiple platform designs, thereby reducing inventory pressure.

4. Single-Resistor Gain Setting for Simplified Design

A single external resistor is all that is required to set the gain anywhere between 5 and 1,000, significantly simplifying circuit design, reducing the number of components and accelerating product development cycles.

Typical Applications for the AD8227

Industrial process control (PLC analogue input modules): Used as the signal conditioning front-end for 4–20 mA current loop reception, thermocouple/RTD temperature transmitters and pressure transmitters.

Medical monitoring equipment: Portable ECG/EEG/EMG bio-signal amplifiers, blood pressure sensor interfaces, and medical temperature monitoring.

Portable data acquisition systems: Battery-powered handheld loggers, environmental monitoring equipment, and vibration analysers.

Bridge-type sensor measurements: Load cells (electronic scales), strain gauges (structural stress monitoring), and piezoresistive pressure sensors.

Shenzhen Mingjiada Electronics Co., Ltd. supplies a full range of brand-new, genuine ADI AD8227 models, available from stock. We cater for both small-batch samples and large-volume orders. Please feel free to enquire about purchasing.

Contact Mingjiada Electronics:

Tel: +86 13410018555 / 86755-83294757

Email: sales@hkmjd.com

Address: 1239–1241, New Asia Guoli Building, Zhenzhong Road, Futian District, Shenzhen

Tags: AD8227BRMZ, AD8227BRM, AD8227BR, AD8227B, AD8227