AD8274 Analog Devices Data Sheet Manual

Very Low Distortion, Precision Difference Amplifier

AD8274 FEATURES FUNCTIONAL BLOCK DIAGRAM

Very low distortion 0.00025% THD + N (20 k Hz) 0.0015% THD + N (100 k Hz)

Drives 600 Ω loads Excellent gain accuracy 0.03% maximum gain error 2 ppm/°C maximum gain drift

Gain of ½ or 2 12kΩ 6kΩ

AC specifications 20 V/μs minimum slew rate 800 ns to 0.01% settling time

High accuracy dc performance

Figure 1.

83 d B minimum CMRR 700 μV maximum offset voltage 8-lead SOIC and MSOP packages Supply current: 2.6 m A maximum

Table 1. Difference Amplifiers by Category

Supply range: ±2.5 V to ±18 V

Low High Single-Supply Single-Supply

APPLICATIONS

Distortion Voltage Unidirectional Bidirectional

ADC driver

AD8270 AD628 AD8202 AD8205

High performance audio

AD8273 AD629 AD8203 AD8206

Instrumentation amplifier building blocks www.BDTIC.com/ADI

AD8274 AD8216

Level translators

AMP03

Automatic test equipment Sine/cosine encoders

GENERAL DESCRIPTION

The AD8274 is a difference amplifier that delivers excellent ac With no external components, the AD8274 can be configured and dc performance. Built on Analog Devices, Inc., proprietary as a G = ½ or G = 2 difference amplifier. For single-ended

i Polar® process and laser-trimmed resistors, AD8274 achieves a applications that need high gain stability or low distortion breakthrough in distortion vs. current consumption and has performance, the AD8274 can also be configured for several excellent gain drift, gain accuracy, and CMRR. gains ranging from −2 to +3. Distortion in the audio band is an extremely low 0.00025% The excellent distortion and dc performance of the AD8274, (112 d B) at a gain of ½ and 0.00035% (109 d B) at a gain of 2 along with its high slew rate and bandwidth, make it an excellent while driving a 600 Ω load ADC driver. Because of the part’s high output drive, it also makes a very good cable driver.

With supply voltages up to ±18 V (+36 V single supply), the

AD8274 is well suited for measuring large industrial signals. The AD8274 only requires 2.6 m A maximum supply current. It Additionally, the part’s resistor divider architecture allows it to is specified over the industrial temperature range of −40°C to

measure voltages beyond the supplies. +85°C and is fully Ro HS compliant. For the dual version, see the

AD8273 data sheet.

Rev. 0 Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other

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