Analog Devices' instrumentation amplifiers providing excellent power efficiency and zero drift performance for industrial and consumer devices.
Published2012.08.16 09:45
August 16, 2012 – Analog Devices ( www.analog.com , NASDAQ: ADI), a global leader in high-performance signal processing technology and data converters, today launched the new AD8237, a micro-power, zero-drift precision amplifier for instrumentation. As a solution for precision signal and sensor conditioning, the AD8237 offers both power efficiency and cost competitiveness. It is an industry-leading product featuring low input offset drift (< 0.3µV/ºC) and an input signal range more than 300mV higher than the supply rail voltage. With a maximum gain error of 0.005%, a drift of 0.5ppm/°C, and a common-mode rejection ratio (CMRR) of 114dB, this device delivers unrivaled measurement precision even under low-gain conditions. In addition, the AD8237 is suitable for signal conditioning bridges, temperature sensors, and similar sensors used in low-power designs because its no-load standby current is just over 100µA. Target applications for the AD8237 include portable and battery-powered medical devices and consumer electronics, as well as precision measuring equipment such as infusion pumps, mobile blood pressure monitors, sensors ranging from 4mA to 20mA, gaming peripherals, and home scales.
The AD8237 operates on a single supply voltage from 1.8V to 5.5V and is available in a compact MSOP-8 package. The gain adjustment of the AD8237 (range 1 to 1000x) is set by the ratio of two external registers, providing industry-leading gain error performance and temperature-dependent gain precision.
Key Specifications of the AD8237 Micro Power, Zero Drift Instrumentation Amplifier:
• Profit Range: 1~1000
• CMRR: 114 dB
• DC precision
o Input offset voltage: 75 µV
o Offset drift: 0.3 µV/°C
• Supply current: 115 µA
• Supply Range: 1.8V~5.5V
• Bandwidth (G=100): 10 kHz
• Gain error: 0.005%
• Gain Drift: 0.5 ppm/°C
• Input voltage noise: 1.5 uVp-p
product | Sample supply | class=xl31236 width=121>Price per 1,000 | Package |
nk> AD8237 | Supplying | -40˚C ~ 125˚C | $0.93 | WIDTH: 87pt; BORDER-TOP: black; BORDER-RIGHT: black 0.5pt solid" class=xl31241 width=116>
The AD8237 works perfectly in systems using various SAR A/D converters, such as the AD7988-1 ultra-low power 16-bit SAR converter.
• View video introduction to AD8237: http://www.analog.com/AD8237video
• Order samples and download datasheets: http://www.analog.com/AD8237
• Get support, discuss related topics, and check FAQs at ADI's online technical support community, Engineer Zone™: http://ez.analog.com/community/amplifiers/instrumentation-amplifiers
• Search for other products for instrumentation and measurement applications: http://instrumentation.analog.com/en/segment/im.html
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