AD7495BR

更新时间： 2024-11-14 23:16:19

品牌	Logo	应用领域
亚德诺 - ADI		/
页数	文件大小	规格书
16页	219K
描述
1 MSPS, 12-Bit ADCs

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中文翻译

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数据手册
替代型号

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AD7495BR 数据手册

1 MSPS,

12-Bit ADCs

AD7475/AD7495

FUNCTIONAL BLOCK DIAGRAMS

FEATURES

Fast Throughput Rate: 1 MSPS

Specified for V_DDof 2.7 V to 5.25 V

Low Power:

4.5 mW Max at 1 MSPS with 3 V Supplies

10.5 mW Max at 1 MSPS with 5 V Supplies

Wide Input Bandwidth:

12-BIT

SUCCESSIVE

APPROXIMATION

ADC

T/H

REF IN

68 dB SNR at 300 kHz Input Frequency

Flexible Power/Serial Clock Speed Management

No Pipeline Delays

High-Speed Serial Interface SPI™/QSPI™/

MICROWIRE™/DSP-Compatible

On-Board Reference 2.5 V (AD7495 Only)

Standby Mode: 1 ␮A Max

SCLK

SDATA

CONTROL

LOGIC

DRIVE

AD7475

8-Lead ␮SOIC and SOIC Packages

GND

APPLICATIONS

Battery-Powered Systems

Personal Digital Assistants

Medical Instruments

Mobile Communications

Instrumentation and Control Systems

Data Acquisition Systems

High-Speed Modems

12-BIT

SUCCESSIVE

APPROXIMATION

ADC

T/H

REF OUT

BUF

SCLK

SDATA

Optical Sensors

CONTROL

LOGIC

2.5V

REFERENCE

GENERAL DESCRIPTION

DRIVE

The AD7475/AD7495 are 12-bit high-speed, low-power,

successive-approximation ADCs. The parts operate from a single

2.7 V to 5.25 V power supply and feature throughput rates up to

1 MSPS. The parts contain a low-noise, wide bandwidth track/hold

amplifier that can handle input frequencies in excess of 1 MHz.

AD7495

GND

PRODUCT HIGHLIGHTS

1. High throughput with low power consumption. The

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 conversion is also initiated at this point.

There are no pipelined delays associated with the part.

AD7475 offers 1 MSPS throughput rates with 4.5 mW

power consumption.

2. Single-supply operation with V_DRIVEfunction. The AD7475/

AD7495 operate from a single 2.7 V to 5.25 V supply. The

_DRIVEfunction allows the serial interface to connect directly

The AD7475/AD7495 use advanced design techniques to achieve

very low power dissipation at high throughput rates. With 3 V

supplies and 1 MSPS throughput rate, the AD7475 consumes just

1.5 mA, while the AD7495 consumes 2 mA. With 5 V supplies

and 1 MSPS, the current consumption is 2.1 mA for the AD7475

and 2.6 mA for the AD7495.

to either 3 V or 5 V processor systems independent of V_DD

3. Flexible power/serial clock speed management. The con-

version rate is determined by the serial clock, allowing the

conversion time to be reduced through the serial clock speed

increase. The part also features shutdown modes to maximize

power efficiency at lower throughput rates. This allows the

average power consumption to be reduced while not convert-

ing. Power consumption is 1 µA when in full shutdown.

The analog input range for the part is 0 V to REF IN. The 2.5 V

reference for the AD7475 is applied externally to the REF IN pin

while the AD7495 has an on-board 2.5 V reference. The conver-

sion time is determined by the SCLK frequency.

4. No pipeline delay. The part features a standard successive-

approximation ADC with accurate control of the sampling

instant via a CS input and once off conversion control.

MICROWIRE is a trademark of National Semiconductor Corporation.

SPI and QSPI are trademarks of Motorola, Inc.

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, norforanyinfringementsofpatentsorotherrightsofthirdpartiesthat

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

www.analog.com

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AD7495BR 替代型号

型号	品牌	替代类型	描述	数据表
AD7495BRZ-REEL7	ADI	完全替代	1 MSPS,12-Bit ADCs
AD7495BRZ	ADI	完全替代	1 MSPS,12-Bit ADCs

与AD7495BR相关器件

型号	品牌	获取价格	描述	数据表
AD7495BRM	ADI	获取价格	1 MSPS, 12-Bit ADCs
AD7495BRM-REEL	ADI	获取价格	1 MSPS,12-Bit ADCs
AD7495BRM-REEL	ROCHESTER	获取价格	1-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO8, MO-187-AA, MSOP-8
AD7495BRM-REEL7	ADI	获取价格	1MSPS,12-Bit ADCs
AD7495BRMZ	ROCHESTER	获取价格	1-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO8, MO-187-AA, MSOP-8
AD7495BR-REEL	ADI	获取价格	1MSPS,12-Bit ADCs
AD7495BR-REEL7	ADI	获取价格	1 MSPS,12-Bit ADCs
AD7495BRZ	ADI	获取价格	1 MSPS,12-Bit ADCs
AD7495BRZ3	ADI	获取价格	1MSPS,12-Bit ADCs
AD7495BRZ-REEL	ADI	获取价格	1 MSPS,12-Bit ADCs

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