AD8138

更新时间： 2024-11-01 22:49:59

品牌	Logo	应用领域
亚德诺 - ADI		驱动器
页数	文件大小	规格书
14页	235K
描述
Low Distortion Differential ADC Driver

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AD8138 数据手册

Low Distortion

Differential ADC Driver

AD8138

FUNCTIONAL BLOCK DIAGRAM

FEATURES

Easy to Use Single-Ended-to-Differential Conversion

Adjustable Output Common-Mode Voltage

Externally Adjustable Gain

Low Harmonic Distortion

–94 dBc—Second, <–114 dBc—Third @ 5 MHz into

800 ⍀ Load

+IN

–IN

OCM

V+

V–

+OUT

–OUT

–87 dBc—Second, –85 dBc—Third @ 20 MHz into

800 ⍀ Load

AD8138

NC = NO CONNECT

–3 dB Bandwidth of 320 MHz, G = +1

Fast Settling to 0.01% of 16 ns

Slew Rate 1150 V/␮s

Fast Overdrive Recovery of 4 ns

Low Input Voltage Noise of 5 nV/√Hz

1 mV Typical Offset Voltage

Wide Supply Range +3 V to ؎5 V

Low Power 90 mW on +5 V

TYPICAL APPLICATION CIRCUIT

+5V

499⍀

0.1 dB Gain Flatness to 40 MHz

Available in 8-Lead SOIC

499⍀

AVDD

DVDD

AIN

OCM

DIGITAL

OUTPUTS

ADC

AD8138

–

APPLICATIONS

ADC Driver

499⍀

AIN

AVSS

REF

Single-Ended-to-Differential Converter

IF and Baseband Gain Block

Differential Buffer

499⍀

Line Driver

PRODUCT DESCRIPTION

performance ADCs, preserving the low frequency and dc infor-

mation. The common-mode level of the differential output is

adjustable by a voltage on the V_OCMpin, easily level-shifting

the input signals for driving single supply ADCs. Fast overload

recovery preserves sampling accuracy.

AD8138 is a major advancement over op amps for differential

signal processing. The AD8138 can be used as a single-ended-

to-differential amplifier or as a differential-to-differential ampli-

fier. The AD8138 is as easy to use as an op amp, and greatly

simplifies differential signal amplification and driving.

The AD8138 distortion performance makes it an ideal ADC

driver for communication systems, with distortion performance

good enough to drive state-of-the-art 10- to 16-bit converters

at high frequencies. The AD8138’s high bandwidth and IP3

also make it appropriate for use as a gain block in IF and

baseband signal chains. The AD8138 offset and dynamic per-

formance make it well suited for a wide variety of signal pro-

cessing and data acquisition applications.

Manufactured on ADI’s proprietary XFCB bipolar process, the

AD8138 has a –3 dB bandwidth of 320 MHz and delivers a

differential signal with the lowest harmonic distortion available

in a differential amplifier. The AD8138 has a unique internal

feedback feature that provides output gain and phase matching

that are balanced, suppressing even order harmonics. The inter-

nal feedback circuit also minimizes any gain error that would be

associated with the mismatches in the external gain setting

resistors.

The AD8138 is offered in an 8-lead SOIC that operates over

the industrial temperature range of –40°C to +85°C.

The AD8138’s differential output helps balance the input-to-

differential ADCs, maximizing the performance of the ADC.

The AD8138 eliminates the need for a transformer with high

REV. A

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 rights of third parties

which may result from its use. No license is granted by implication or

otherwise under any patent or patent rights of Analog Devices.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781/329-4700

Fax: 781/326-8703

World Wide Web Site: http://www.analog.com

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与AD8138相关器件

型号	品牌	获取价格	描述	数据表
AD8138_06	ADI	获取价格	Low Distortion Differential ADC Driver
AD8138-703L	ADI	获取价格	LINE DRIVER, CDFP10, DFP-10
AD8138AR	ADI	获取价格	Low Distortion Differential ADC Driver
AD8138ARM	ADI	获取价格	Low Distortion Differential ADC Driver
AD8138ARM-REEL	ADI	获取价格	Low Distortion Differential ADC Driver
AD8138ARM-REEL7	ADI	获取价格	Low Distortion Differential ADC Driver
AD8138ARMZ	ADI	获取价格	Low Distortion Differential ADC Driver
AD8138ARMZ-REEL	ADI	获取价格	Low Distortion Differential ADC Driver
AD8138ARMZ-REEL7	ADI	获取价格	Low Distortion Differential ADC Driver
AD8138AR-REEL	ADI	获取价格	Low Distortion Differential ADC Driver

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