AD7492AR

更新时间： 2024-12-01 04:30:43

品牌	Logo	应用领域
亚德诺 - ADI		转换器光电二极管
页数	文件大小	规格书
16页	194K
描述
1.25 MSPS, 16 mW Internal REF and CLK, 12-Bit Parallel ADC

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AD7492AR 数据手册

1.25 MSPS, 16 mW Internal REF and CLK,

12-Bit Parallel ADC

AD7492

FEATURES

FUNCTIONAL BLOCK DIAGRAM

Specified for V_DDof 2.7 V to 5.25 V

Throughput Rate of 1 MSPS—AD7492

Throughput Rate of 1.25 MSPS—AD7492-5

Low Power

4 mW Typ at 1 MSPS with 3 V Supplies

11 mW Typ at 1 MSPS with 5 V Supplies

Wide Input Bandwidth

AVDD

VDRIVE

DVDD

REF OUT

2.5V

REF

CLOCK

OSCILLATOR

BUF

DB11

DB0

70 dB Typ SNR at 100 kHz Input Frequency

2.5 V Internal Reference

OUTPUT

DRIVERS

T/H

12-BIT SAR

ADC

VIN

On-Chip CLK Oscillator

Flexible Power/Throughput Rate Management

No Pipeline Delays

High-Speed Parallel Interface

Sleep Mode: 50 nA Typ

24-Lead SOIC and TSSOP Packages

PS/FS

CONTROL

LOGIC

CONVST

AD7492

BUSY

GENERAL DESCRIPTION

The AD7492 and AD7492-5 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 1.25 MSPS. They contain a low-noise, wide bandwidth

track/hold amplifier that can handle bandwidths up to 10 MHz.

AGND

DGND

PRODUCT HIGHLIGHTS

1. High Throughput with Low Power Consumption

The AD7492-5 offers 1.25 MSPS throughput with 16 mW

power consumption.

The conversion process and data acquisition are controlled using

standard control inputs allowing easy interface to microproces-

sors 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 880 ns

(AD7492) or 680 ns (AD7492-5) later to indicate that the con-

version is complete. There are no pipeline delays associated with

the part. The conversion result is accessed via standard CS and

RD signals over a high-speed parallel interface.

2. Flexible Power/Throughput Rate Management

The conversion time is determined by an internal clock. The

part also features two sleep modes, partial and full, to maxi-

mize 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.

The AD7492 uses advanced design techniques to achieve very

low power dissipation at high throughput rates. With 5 V

supplies and 1.25 MSPS, the average current consumption

AD7492-5 is typically 2.75 mA. The part also offers flexible

power/throughput rate management.

4. Flexible Digital Interface

The V_DRIVEfeature controls the voltage levels on the I/O

digital pins.

5. Fewer Peripheral Components

It is also possible to operate the part in a full sleep mode and a

partial sleep mode, where the part wakes up to do a conversion

and automatically enters a sleep mode at the end of conversion.

The type of sleep mode is hardware selected by the PS/FS pin.

Using these sleep modes allows very low power dissipation num-

bers at lower throughput rates.

The AD7492 optimizes PCB space by using an internal

Reference and internal CLK.

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

reference is supplied internally and is available for external refer-

encing. The conversion rate is determined by the internal clock.

REV. 0

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

12 3 4 5 6 7...16

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AD7492AR 替代型号

型号	品牌	替代类型	描述	数据表
AD7492ARUZ	ADI	完全替代	1.25 MSPS, 16 mW Internal REF 12-Bit Parallel ADC
AD7492BRUZ	ADI	完全替代	1.25 MSPS, 16 mW Internal REF and CLK, 12-Bit Parallel ADC
AD7492ARZ	ADI	完全替代	1.25 MSPS, 16 mW Internal REF and CLK, 12-Bit Parallel ADC

与AD7492AR相关器件

型号	品牌	获取价格	描述	数据表
AD7492AR-5	ADI	获取价格	1.25 MSPS, 16 mW Internal REF and CLK, 12-Bit Parallel ADC
AD7492AR-5-REEL	ADI	获取价格	1-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, PARALLEL ACCESS, PDSO24, MS-013AD, SOIC-24
AD7492AR-5-REEL7	ADI	获取价格	1.25 MSPS, 16 mW Internal REF and CLK, 12-Bit Parallel ADC
AD7492AR-REEL	ROCHESTER	获取价格	1-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, PARALLEL ACCESS, PDSO24, MS-013AD, SOIC-24
AD7492AR-REEL7	ROCHESTER	获取价格	1-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, PARALLEL ACCESS, PDSO24, MS-013AD, SOIC-24
AD7492ARU	ADI	获取价格	1.25 MSPS, 16 mW Internal REF and CLK, 12-Bit Parallel ADC
AD7492ARU-5	ADI	获取价格	1.25 MSPS, 16 mW Internal REF and CLK, 12-Bit Parallel ADC
AD7492ARU-5-REEL	ADI	获取价格	1.25 MSPS, 16 mW Internal REF and CLK, 12-Bit Parallel ADC
AD7492ARU-5-REEL7	ADI	获取价格	1.25 MSPS, 16 mW Internal REF and CLK, 12-Bit Parallel ADC
AD7492ARU-REEL	ADI	获取价格	1.25 MSPS, 16 mW Internal REF and CLK, 12-Bit Parallel ADC

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