AD7927BRUZ-REEL

更新时间： 2024-11-27 13:05:23

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亚德诺 - ADI		/
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21页	447K
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数据手册
替代型号

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AD7927BRUZ-REEL 数据手册

8-Channel, 200 kSPS, 12-Bit ADC

with Sequencer in 20-Lead TSSOP

AD7927

FEATURES

FUNCTIONAL BLOCK DIAGRAM

Fast Throughput Rate: 200 kSPS

Specified for AV_DDof 2.7 V to 5.25 V

Low Power:

3.6 mW Max at 200 kSPS with 3 V Supply

7.5 mW Max at 200 kSPS with 5 V Supply

8 (Single-Ended) Inputs with Sequencer

Wide Input Bandwidth:

70 dB Min SINAD at 50 kHz Input Frequency

Flexible Power/Serial Clock Speed Management

No Pipeline Delays

High Speed Serial Interface SPI™/QSPI™/

MICROWIRE™/DSP Compatible

REF

T/H

•

12-BIT

SUCCESSIVE

APPROXIMATION

ADC

I/P

MUX

Shutdown Mode: 0.5 ␮A Max

20-Lead TSSOP Package

SCLK

DOUT

DIN

CONTROL LOGIC

SEQUENCER

GENERAL DESCRIPTION

The AD7927 is a 12-bit, high speed, low power, 8-channel,

successive-approximation ADC. The part operates from a single

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

to 200 kSPS. The part contains a low noise, wide bandwidth

track-and-hold amplifier that can handle input frequencies in

excess of 8 MHz.

AD7927

DRIVE

GND

PRODUCT HIGHLIGHTS

1. High Throughput with Low Power Consumption.

The AD7927 offers up to 200 kSPS throughput rates. At the

maximum throughput rate with 3 V supplies, the AD7927

dissipates 3.6 mW of power maximum.

The conversion process and data acquisition are controlled

using CS and the serial clock signal, allowing the device to

easily 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.

2. Eight Single-Ended Inputs with a Channel Sequencer.

A consecutive sequence of channels, through which the ADC

will cycle and convert on, can be selected.

The AD7927 uses advanced design techniques to achieve very low

power dissipation at maximum throughput rates. At maximum

throughput rates, the AD7927 consumes 1.2 mA maximum

with 3 V supplies; with 5 V supplies, the current consumption is

1.5 mA maximum.

3. Single-Supply Operation with V_DRIVEFunction.

The AD7927 operates from a single 2.7 V to 5.25 V supply. The

V_DRIVEfunction allows the serial interface to connect directly

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

Through the configuration of the Control Register, the analog

input range for the part can be selected as 0 V to REF_INor 0 V to

2 ¥ REF_IN, with either straight binary or twos complement output

coding. The AD7927 features eight single-ended analog inputs

with a channel sequencer to allow a preprogrammed selection of

channels to be converted sequentially.

4. 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. The part also features various shutdown modes

to maximize power efficiency at lower throughput rates. Current

consumption is 0.5 mA maximum when in full shutdown.

The conversion time for the AD7927 is determined by the SCLK

frequency, as this is also used as the master clock to control the

conversion. The conversion time may be as short as 800 ns with

a 20 MHz SCLK.

5. 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.

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, 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 companies.

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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中文翻译

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AD7927BRUZ-REEL 替代型号

型号	品牌	替代类型	描述	数据表
AD7927BRUZ	ADI	完全替代	8-Channel, 200 kSPS, 12-Bit ADC with Sequencer in 20-Lead TSSOP
AD7927BRU	ADI	完全替代	8-Channel, 200 kSPS, 12-Bit ADC with Sequencer in 20-Lead TSSOP

与AD7927BRUZ-REEL相关器件

型号	品牌	获取价格	描述	数据表
AD7927BRUZ-REEL7	ROCHESTER	获取价格	8-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO20, ROHS COMPLIANT, MO-153AC,
AD7928	ADI	获取价格	8-Channel, 1 MSPS, 8-/10-/12-Bit ADCs with Sequencer in 20-Lead TSSOP
AD7928BRU	ADI	获取价格	8-Channel, 1 MSPS, 8-/10-/12-Bit ADCs with Sequencer in 20-Lead TSSOP
AD7928BRU-REEL	ADI	获取价格	8-Channel, 1 MSPS, 8-/10-/12-Bit ADCs with Sequencer in 20-Lead TSSOP
AD7928BRU-REEL7	ADI	获取价格	8-Channel, 1 MSPS, 8-/10-/12-Bit ADCs with Sequencer in 20-Lead TSSOP
AD7928BRUZ	ADI	获取价格	8-Channel, 1 MSPS, 8-/10-/12-Bit ADCs with Sequencer in 20-Lead TSSOP
AD7928BRUZ-REEL	ADI	获取价格	8-Channel, 1 MSPS, 8-/10-/12-Bit ADCs
AD7928BRUZ-REEL7	ADI	获取价格	8-Channel, 1 MSPS, 8-/10-/12-Bit ADCs
AD7928WBRUZ-REEL	ADI	获取价格	8-Channel, 1 MSPS, 12-Bit ADC with Sequencer in 20-Lead TSSOP
AD7928WYRUZ-REEL7	ADI	获取价格	8-Channel, 1 MSPS, 8-/10-/12-Bit ADCs

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