Datasheet > AD7899

AD7899

更新时间： 2024-09-29 22:53:31

品牌	Logo	应用领域
亚德诺 - ADI		/
页数	文件大小	规格书
12页	485K
描述
Evaluation Board for 5V, 12-Bit, Serial 220kSPS ADC in 8-Pin Package

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AD7899 数据手册

EvaluationBoard400kSPS,14-BitADC

EVAL-AD7899CB

FEATURES

O P E RAT ING T H E AD 7899 E VALUAT IO N BO ARD

Full-Featured Evaluation Board for the AD7899

Eval-Board Controller Com patible

Stand Alone Capability

On-Board Analog Buffering and Reference

Various Linking Options

P ower Supplies

When using this evaluation board with the EVAL-BOARD

CONT ROLLER all supplies are provided from the EVAL-

BOARD CONT ROLLER through the 96 way connector.

When using the board as a stand alone unit external supplies

must be provided. T his evaluation board has seven power

supply inputs:

PC Softw are for Control and Data Analysis w hen used

w ith Eval-Board Controller

V_DD, A_GND, +12V, -12V, A_GND, V_DRIVEand

I N T R O D U C T I O N

D_GNDIf the evaluation board is used in stand-alone mode

T his T echnical Note describes the evaluation board for the

AD7899 high speed, low power, 14-bit A/D converter that

operates from a single 5 V supply. Full data on the AD7899

is available in the AD7899 data sheet available from Analog

Devices and should be consulted in conjunction with this

T echnical Note when using the Evaluation Board.

+5V must be connected to the V_{D D}input to supply the

AD7899 V_DDpin and the AD780 voltage reference. +12V and

-12V are used to supply the op-amps. T he V_DRIVEpin can be

driven by a voltage between +3V and +5V allowing the

evaluation board to be connected to both +3V and +5V

systems. T he supplies are decoupled to the relevant ground

plane with 10µF tantalum and 0.1µF multilayer ceramic

capacitors at the point where they enter the board. T he supply

pins of all the op-amps and reference are also decoupled to

A_GNDwith 10µF tantalum and a 0.1µF ceramic capacitor. T he

AD7899 AV_DDsupply pin is decoupled to A_GNDwith 47uF

tantalum and 0.1µF multilayer ceramic capacitors.

On-board components include an AD780 which is a +2.5V

ultra high precision bandgap reference and an op-amp for the

analog inputs. T here are various link options which are

explained in detail on page 2.

Interfacing to this board is through a 96-way connector. T his

96-way connector is compatible with the EVAL-BOARD

CON T ROLLER which is also available from Analog D e-

vices. External sockets are provided for the optional, exter-

nal, CONVST and C LKIN and V_{D RIVE}inputs and the

VIN 1-VIN 4 inputs.

Extensive ground planes are used on this board to minimize

the effect of high frequency noise interference. T here are two

ground planes, A_GNDand D_GND

location close to the AD7899.

. T hese are connected at one

Fig. 1: FUNCTIONAL BLOCK DIAGRAM

ANALOG

INPUT

ANALOG

SIGNAL

CONDITIONING

AD7899

EXTERNAL

REFERENCE

REV. 0

Inform ation furnished by Analog Devices is believed to be accurate and

reliable. However, no responsibility is assum ed by Analog Devices for

its use, nor for any infringem ents of patents or other rights of third

parties which m ay result from its use. No license is granted by

im plication or otherwise under any patent or patent rights of Analog

Devices.

OneTechnologyWay,P.O.Box9106,Norwood.MA02062-9106, U.S.A.

Tel:617/329-4700 Fax:617/326-8703

12 3 4 5 6 7...12

中文翻译

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与AD7899相关器件

型号	品牌	获取价格	描述	数据表
AD7899AR-1	ADI	获取价格	5 V Single Supply 14-Bit 400 kSPS ADC
AD7899AR-1	ROCHESTER	获取价格	2-CH 14-BIT SUCCESSIVE APPROXIMATION ADC, PARALLEL ACCESS, PDSO28, SOIC-28
AD7899AR-2	ADI	获取价格	5 V Single Supply 14-Bit 400 kSPS ADC
AD7899AR-2	ROCHESTER	获取价格	暂无描述
AD7899AR-2REEL	ROCHESTER	获取价格	2-CH 14-BIT SUCCESSIVE APPROXIMATION ADC, PARALLEL ACCESS, PDSO28, SOIC-28
AD7899AR-3	ADI	获取价格	5 V Single Supply 14-Bit 400 kSPS ADC
AD7899AR-3	ROCHESTER	获取价格	2-CH 14-BIT SUCCESSIVE APPROXIMATION ADC, PARALLEL ACCESS, PDSO28, SOIC-28
AD7899AR-3REEL	ADI	获取价格	2-CH 14-BIT SUCCESSIVE APPROXIMATION ADC, PARALLEL ACCESS, PDSO28, SOIC-28
AD7899AR-3REEL7	ADI	获取价格	2-CH 14-BIT SUCCESSIVE APPROXIMATION ADC, PARALLEL ACCESS, PDSO28, SO-28
AD7899ARS-1	ADI	获取价格	5 V Single Supply 14-Bit 400 kSPS ADC

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