AD7478SRT-R2

更新时间： 2024-12-01 12:41:39

品牌	Logo	应用领域
亚德诺 - ADI		转换器模数转换器光电二极管
页数	文件大小	规格书
20页	353K
描述
1 MSPS, 12-/10-/8-Bit ADCs in 6-Lead SOT-23

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AD7478SRT-R2 数据手册

1 MSPS, 12-/10-/8-Bit ADCs

in 6-Lead SOT-23

AD7476/AD7477/AD7478^*

FEATURES

FUNCTIONAL BLOCK DIAGRAM

Fast Throughput Rate: 1 MSPS

Speciﬁed for V_DDof 2.35 V to 5.25 V

Low Power:

3.6 mW Typ at 1 MSPS with 3 V Supplies

15 mW Typ at 1 MSPS with 5 V Supplies

Wide Input Bandwidth:

8-/10-/12-BIT

SUCCESSIVE-

APPROXIMATION

ADC

T/H

70 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 SOT-23 Package

AD7476/AD7477/AD7478

APPLICATIONS

Battery-Powered Systems

Personal Digital Assistants

Medical Instruments

GND

Mobile Communications

Instrumentation and Control Systems

Data Acquisition Systems

High Speed Modems

Optical Sensors

GENERAL DESCRIPTION

PRODUCT HIGHLIGHTS

The AD7476/AD7477/AD7478 are, respectively, 12-bit, 10-bit,

and 8-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 1 MSPS. The parts

contain a low noise, wide bandwidth track-and-hold ampliﬁer

that can handle input frequencies in excess of 6 MHz.

1. First 12-/10-/8-Bit ADCs in a SOT-23 Package.

2. High Throughput with Low Power Consumption.

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 while not converting. The part also features a

shutdown mode to maximize power efﬁciency at lower

throughput rates. Current consumption is 1 µA maximum

when in shutdown.

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.

The AD7476/AD7477/AD7478 use advanced design techniques

to achieve very low power dissipation at high throughput rates.

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 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 V to V_DD. The conversion

rate is determined by the SCLK.

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

REV. D

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AD7478SRT-R2相关器件

型号	品牌	获取价格	描述	数据表
AD7478SRT-REEL7	ADI	获取价格	1 MSPS, 12-/10-/8-Bit ADCs in 6-Lead SOT-23
AD7478SRTZ-REEL7	ROCHESTER	获取价格	1-CH 8-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO6, PLASTIC, MO-178AB, SOT-23,
AD7478SRTZ-REEL7	ADI	获取价格	8-Bit, 1 MSPS, Low Power Successive Approximation ADC Which Operates From A Single 2.35 V
AD7478SRTZ-REEL73	ADI	获取价格	1 MSPS, 12-/10-/8-Bit ADCs in 6-Lead SOT-23
AD7478WARTZ-RL734	ADI	获取价格	1 MSPS, 12-/10-/8-Bit ADCs in 6-Lead SOT-23
AD7482	ADI	获取价格	3MSPS, 12-Bit SAR ADC
AD7482AST	ADI	获取价格	3MSPS, 12-Bit SAR ADC
AD7482ASTZ	ADI	获取价格	3 MSPS, 12-Bit SAR ADC
AD7482BST	ADI	获取价格	3MSPS, 12-Bit SAR ADC
AD7482BSTZ	ADI	获取价格	3 MSPS, 12-Bit SAR ADC

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