AD7859L

更新时间： 2024-09-30 22:53:31

品牌	Logo	应用领域
亚德诺 - ADI		/
页数	文件大小	规格书
28页	537K
描述
3 V to 5 V Single Supply, 200 kSPS 8-Channel, 12-Bit Sampling ADCs

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AD7859L 数据手册

3 V to 5 V Single Supply, 200 kSPS

8-Channel, 12-Bit Sampling ADCs

AD7859/AD7859L*

FUNCTIONAL BLOCK DIAGRAM

FEATURES

Specified for V_DDof 3 V to 5.5 V

AD7859–200 kSPS; AD7859L–100 kSPS

System and Self-Calibration

Low Power

AGND

AD7859/AD7859L

AIN1

AIN8

I/P

MUX

Normal Operation

T/H

AD7859: 15 mW (V_DD= 3 V)

AD7859L: 5.5 mW (V_DD= 3 V)

Using Automatic Power-Down After Conversion (25 ␮W)

AD7859: 1.3 mW (V_DD= 3 V 10 kSPS)

AD7859L: 650 ␮W (V_DD= 3 V 10 kSPS)

Flexible Parallel Interface:

2.5V

REFERENCE

COMP

REF

BUF

REF

OUT

DGND

16-Bit Parallel/8-Bit Parallel

44-Pin PQFP and PLCC Packages

CHARGE

REDISTRIBUTION

DAC

REF1

APPLICATIONS

CLKIN

CONVST

BUSY

Battery-Powered Systems (Personal Digital Assistants,

Medical Instruments, Mobile Communications)

Pen Computers

REF2

SAR + ADC

CONTROL

CALIBRATION MEMORY

AND

CONTROLLER

SLEEP

Instrumentation and Control Systems

High Speed Modems

CAL

PARALLEL INTERFACE/CONTROL REGISTER

GENERAL DESCRIPTION

The AD7859/AD7859L are high speed, low power, 8-channel,

12-bit ADCs which operate from a single 3 V or 5 V power

supply, the AD7859 being optimized for speed and the

AD7859L for low power. The ADC contains self-calibration

and system calibration options to ensure accurate operation over

time and temperature and have a number of power-down

options for low power applications.

DB15 – DB0

W/B

PRODUCT HIGHLIGHTS

1. Operation with either 3 V or 5 V power supplies.

2. Flexible power management options including automatic

power-down after conversion.

The AD7859 is capable of 200 kHz throughput rate while the

AD7859L is capable of 100 kHz throughput rate. The input

track-and-hold acquires a signal in 500 ns and features a pseudo-

differential sampling scheme. The AD7859 and AD7859L input

voltage range is 0 to V_REF(unipolar) and –V_REF/2 to +V_REF/2

about V_REF/2 (bipolar) with both straight binary and 2s comple-

ment output coding respectively. Input signal range is to the

supply and the part is capable of converting full-power signals to

100 kHz.

3. By using the power management options a superior power

performance at slower throughput rates can be achieved.

AD7859: 1 mW typ @ 10 kSPS

AD7859L: 1 mW typ @ 20 kSPS

4. Operates with reference voltages from 1.2 V to the supply.

5. Analog input ranges from 0 V to V_DD

6. Self and system calibration.

7. Versatile parallel I/O port.

8. Lower power version AD7859L.

CMOS construction ensures low power dissipation of typically

5.4 mW for normal operation and 3.6 µW in power-down mode.

The part is available in 44-pin, plastic quad flatpack package

(PQFP) and plastic lead chip carrier (PLCC).

*Patent pending.

See page 28 for data sheet index.

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: 617/329-4700

Fax: 617/326-8703

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与AD7859L相关器件

型号	品牌	获取价格	描述	数据表
AD7859L*	ADI	获取价格	3 V to 5 V Single Supply. 200 kSPS 8-Channel. 12-Bit Sampling ADCs
AD7859LAS	ADI	获取价格	3 V to 5 V Single Supply, 200 kSPS 8-Channel, 12-Bit Sampling ADCs
AD7859LAS3	ADI	获取价格	3 V to 5 V Single Supply, 200 kSPS8-Channel, 12-Bit Sampling ADCs
AD7859LAS-REEL	ADI	获取价格	暂无描述
AD7859LASZ	ADI	获取价格	3 V to 5 V Single Supply, 200 kSPS 8-Channel, 12-Bit, Parallel Sampling ADCs
AD7859LASZ-REEL	ADI	获取价格	暂无描述
AD7861	ADI	获取价格	11-Bit Resolution Simultaneous Sampling A/D Converter
AD7861AP	ADI	获取价格	11-Bit Resolution Simultaneous Sampling A/D Converter
AD7861AP	ROCHESTER	获取价格	7-CH 11-BIT SUCCESSIVE APPROXIMATION ADC, PARALLEL ACCESS, PQCC44, PLASTIC, LCC-44
AD7861APZ	ROCHESTER	获取价格	7-CH 11-BIT SUCCESSIVE APPROXIMATION ADC, PARALLEL ACCESS, PQCC44, PLASTIC, LCC-44

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