AD7920BKS

更新时间： 2024-11-26 22:07:07

品牌	Logo	应用领域
亚德诺 - ADI		/
页数	文件大小	规格书
20页	521K
描述
250 kSPS, 10-/12-Bit ADCs in 6-Lead SC70

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AD7920BKS 数据手册

250 kSPS,

10-/12-Bit ADCs in 6-Lead SC70

AD7910/AD7920^*

FEATURES

FUNCTIONAL BLOCK DIAGRAM

Throughput Rate: 250 kSPS

Specified for V_DDof 2.35 V to 5.25 V

Low Power:

3.6 mW Typ at 250 kSPS with 3 V Supplies

12.5 mW Typ at 250 kSPS with 5 V Supplies

Wide Input Bandwidth:

10-/12-BIT

SUCCESSIVE-

APPROXIMATION

ADC

T/H

71 dB SNR at 100 kHz Input Frequency

Flexible Power/Serial Clock Speed Management

No Pipeline Delays

High Speed Serial Interface

SPI^®/QSPI™/MICROWIRE™/DSP Compatible

Standby Mode: 1 ␮A Max

SCLK

SDATA

CONTROL

LOGIC

6-Lead SC70 Package

8-Lead MSOP Package

AD7910/AD7920

GND

APPLICATIONS

Battery-Powered Systems

Personal Digital Assistants

Medical Instruments

Mobile Communications

Instrumentation and Control Systems

Data Acquisition Systems

High Speed Modems

The reference for the part is taken internally from V_DD.This

allows the widest dynamic input range to the ADC. Thus the

analog input range for the part is 0 to V_DD. The conversion rate

is determined by the SCLK.

Optical Sensors

PRODUCT HIGHLIGHTS

1. 10-/12-Bit ADCs in SC70 and MSOP Packages.

2. Low Power Consumption.

GENERAL DESCRIPTION

The AD7910/AD7920 are, respectively, 10-bit and 12-bit, high

speed, low power, successive-approximation ADCs. The parts

operate from a single 2.35 V to 5.25 V power supply and feature

throughput rates up to 250 kSPS. The parts contain a low noise,

wide bandwidth track-and-hold amplifier that can handle input

frequencies in excess of 13 MHz.

3. Flexible Power/Serial Clock Speed Management.

The conversion rate is determined by the serial clock, allowing

the conversion time to be reduced through the serial clock

speed increase. This allows the average power consumption to

be reduced when power-down mode is used while not convert-

ing. The part also features a power-down mode to maximize

power efficiency at lower throughput rates. Current consumption

is 1 ꢀA max and 50 nA typically when in power-down mode.

The conversion process and data acquisition are controlled

using CS and the serial clock, allowing the devices to interface

with microprocessors or DSPs. The input signal is sampled on

the falling edge of CS and the conversion is also initiated at this

point. There are no pipeline delays associated with the part.

4. Reference Derived from the Power Supply.

5. No Pipeline Delay.

The parts feature a standard successive-approximation ADC

with accurate control of the sampling instant via a CS input

and once-off conversion control.

The AD7910/AD7920 use advanced design techniques to achieve

very low power dissipation at high throughput rates.

*Protected by U.S.Patent No. 6,681,332.

REV. B

Information furnished by Analog Devices is believed to be accurate and

reliable. However, no responsibility is assumed by Analog Devices for its

use, norforanyinfringementsofpatentsorotherrightsofthirdpartiesthat

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

under any patent or patent rights of Analog Devices. Trademarks and

registered trademarks are the property of their respective owners.

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

Tel: 781/329-4700

Fax: 781/326-8703

www.analog.com

12 3 4 5 6 7...20

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与AD7920BKS相关器件

型号	品牌	获取价格	描述	数据表
AD7920BKS-500RL7	ADI	获取价格	250 kSPS, 10-/12-Bit ADCs in 6-Lead SC70
AD7920BKS-REEL	ADI	获取价格	250 kSPS, 10-/12-Bit ADCs in 6-Lead SC70
AD7920BKS-REEL7	ADI	获取价格	250 kSPS, 10-/12-Bit ADCs in 6-Lead SC70
AD7920BKSZ	ADI	获取价格	1-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO6
AD7920BKSZ-500RL7	ADI	获取价格	250 kSPS, 10-/12-Bit ADCs in 6-Lead SC70
AD7920BKSZ-REEL	ADI	获取价格	250 kSPS, 10-/12-Bit ADCs in 6-Lead SC70
AD7920BKSZ-REEL7	ADI	获取价格	250 kSPS, 10-/12-Bit ADCs in 6-Lead SC70
AD7920BRM	ADI	获取价格	250 kSPS, 10-/12-Bit ADCs in 6-Lead SC70
AD7920BRM-REEL	ADI	获取价格	250 kSPS, 10-/12-Bit ADCs in 6-Lead SC70
AD7920BRM-REEL7	ADI	获取价格	250 kSPS, 10-/12-Bit ADCs in 6-Lead SC70

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