AD7472ARUZ

更新时间： 2024-11-06 13:05:23

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
16页	197K
描述
12-Bit, 2.7 V to 5.25 V, 1.5 MSPS Low Power ADC

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AD7472ARUZ 数据手册

1.75 MSPS, 4 mW

10-Bit/12-Bit Parallel ADCs

AD7470/AD7472

FUNCTIONAL BLOCK DIAGRAM

FEATURES

Specified for V_DDof 2.7 V to 5.25 V

1.75 MSPS for AD7470 (10-Bit)

1.5 MSPS for AD7472 (12-Bit)

REF IN

DRIVE

Low Power

DB9 (DB11)

DB0

10-/12-BIT

AD7470: 3.34 mW Typ at 1.5 MSPS with 3 V Supplies

7.97 mW Typ at 1.75 MSPS with 5 V Supplies

AD7472: 3.54 mW Typ at 1.2 MSPS with 3 V Supplies

8.7 mW Typ at 1.5 MSPS with 5 V Supplies

Wide Input Bandwidth

70 dB Typ SNR at 500 kHz Input Frequency

Flexible Power/Throughput Rate Management

No Pipeline Delays

SUCCESSIVE

OUTPUT

DRIVERS

T/H

APPROXIMATION

ADC

CLK IN

CONTROL

LOGIC

CONVST

High Speed Parallel Interface

Sleep Mode: 50 nA Typ

24-Lead SOIC and TSSOP Packages

BUSY

AD7470/AD7472

AGND

DGND

GENERAL DESCRIPTION

AD7470 IS A 10-BIT PART WITH DB0 TO DB9 AS OUTPUTS.

AD7472 IS A 12-BIT PART WITH DB0 TO DB11 AS OUTPUTS.

The AD7470/AD7472 are 10-bit/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 1.5 MSPS for the 12-bit AD7472 and up to 1.75 MSPS for

the 10-bit AD7470. The parts contain a low noise, wide band-

width track/hold amplifier that can handle input frequencies in

excess of 1 MHz.

It is also possible to operate the parts in an auto sleep mode,

where the part wakes up to do a conversion and automatically

enters sleep mode at the end of conversion. Using this method

allows very low power dissipation numbers at lower throughput

rates. In this mode, the AD7472 can be operated with 3 V sup-

plies at 100 kSPS, and consume an average current of just 124 µA.

At 5 V supplies and 100 kSPS, the average current consumption

is 171 µA.

The conversion process and data acquisition are controlled

using standard control inputs allowing easy interfacing to

microprocessors or DSPs. The input signal is sampled on the

falling edge of CONVST and conversion is also initiated at

this point. The BUSY goes high at the start of conversion and

goes low 531.66 ns after falling edge of CONVST (AD7472 with

a clock frequency of 26 MHz) to indicate that the conversion is

complete. There are no pipelined delays associated with the part.

The conversion result is accessed via standard CS and RD sig-

nals over a high speed parallel interface.

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

reference is applied externally to the REF IN pin. The conver-

sion rate is determined by the externally-applied clock.

PRODUCT HIGHLIGHTS

1. High Throughput with Low Power Consumption. The

AD7470 offers 1.75 MSPS throughput and the AD7472

offers 1.5 MSPS throughput rates with 4 mW power

consumption.

The AD7470/AD7472 uses advanced design techniques to

achieve very low power dissipation at high throughput rates. With

3 V supplies and 1.5 MSPS throughput rate, the AD7470 typi-

cally consumes, on average, just 1.1 mA. With 5 V supplies and

1.75 MSPS, the average current consumption is typically

1.6 mA. The part also offers flexible power/throughput rate

management. Operating the AD7470 with 3 V supplies and

500 kSPS throughput reduces the current consumption to 713 µA.

At 5 V supplies and 500 kSPS, the part consumes 944 µA.

2. Flexible Power/Throughput Rate Management. The conver-

sion rate is determined by an externally-applied clock allow-

ing the power to be reduced as the conversion rate is reduced.

The part also features an auto sleep mode to maximize power

efficiency at lower throughput rates.

3. No Pipeline Delay. The part features a standard successive-

approximation ADC with accurate control of the sampling

instant via a CONVST input and once off conversion

control.

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: 781/329-4700

Fax: 781/326-8703

World Wide Web Site: http://www.analog.com

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中文翻译

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AD7472ARUZ 替代型号

型号	品牌	替代类型	描述	数据表
AD7472ARU-REEL	ADI	完全替代	1.75 MSPS, 4 mW 10-Bit/12-Bit Parallel ADCs
AD7472ARU-REEL7	ADI	类似代替	1.75 MSPS, 4 mW 10-Bit/12-Bit Parallel ADCs

与AD7472ARUZ相关器件

型号	品牌	获取价格	描述	数据表
AD7472ARUZ-REEL7	ROCHESTER	获取价格	1-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, PARALLEL ACCESS, PDSO24, TSSOP-24
AD7472ARZ	ADI	获取价格	1.75 MSPS, 4 mW 10-Bit-12-Bit Parallel ADCs
AD7472BR	ADI	获取价格	1.75 MSPS, 4 mW 10-Bit/12-Bit Parallel ADCs
AD7472BR	ROCHESTER	获取价格	1-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, PARALLEL ACCESS, PDSO24, SOIC-24
AD7472BR-REEL	ADI	获取价格	1.75 MSPS, 4 mW 10-Bit/12-Bit Parallel ADCs
AD7472BRU	ADI	获取价格	1.75 MSPS, 4 mW 10-Bit/12-Bit Parallel ADCs
AD7472BRU-REEL	ADI	获取价格	1.75 MSPS, 4 mW 10-Bit/12-Bit Parallel ADCs
AD7472BRU-REEL7	ADI	获取价格	1.75 MSPS, 4 mW 10-Bit/12-Bit Parallel ADCs
AD7472BRUZ	ADI	获取价格	12-Bit, 2.7 V to 5.25 V, 1.5 MSPS Low Power ADC
AD7472BRUZ-REEL	ADI	获取价格	1-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, PARALLEL ACCESS, PDSO24, TSSOP-24

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