AD7922ARM-REEL

更新时间： 2024-11-23 22:49:59

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
32页	386K
描述
2-Channel, 2.35 V to 5.25 V, 1 MSPS, 10-/12-Bit ADCs

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替代型号

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AD7922ARM-REEL 数据手册

2-Channel, 2.35 V to 5.25 V,

1 MSPS, 10-/12-Bit ADCs

AD7912/AD7922

FUNCTIONAL BLOCK DIAGRAM

FEATURES

Fast throughput rate: 1 MSPS

Specified for V_DDof 2.35 V to 5.25 V

Low power:

4.8 mW typ at 1 MSPS with 3 V supplies

15.5mW typ at 1 MSPS with 5 V supplies

Wide input bandwidth:

IN0

IN1

10-/12-BIT

SUCCESSIVE

APPROXIMATION

ADC

T/H

MUX

71 dB minimum SNR at 100 kHz input frequency

Flexible power/serial clock speed management

No pipeline delays

SCLK

High speed serial interface:

AD7912/AD7922

CONTROL LOGIC

SPI®/QSPI™/MICROWIRE™/DSP compatible

Standby mode: 1 µA maximum

Daisy-chain mode

DOUT

DIN

8-lead TSOT package

GND

8-lead MSOP package

Figure 1.

APPLICATIONS

Several AD7912/AD7922 can be connected together in a daisy

chain. The AD7912/AD7922 feature a daisy-chain mode that

allows the user to read the conversion results from the ADCs

contained in the chain. The AD7912/AD7922 use advanced

design techniques to achieve very low power dissipation at high

throughput rates. The reference for the part is taken internally

from V_DD, thereby allowing the widest dynamic input range to

the ADC.

Battery-powered systems:

Personal digital assistants

Medical instruments

Mobile communications

Instrumentation and control systems

Data acquisition systems

High speed modems

Optical sensors

PRODUCT HIGHLIGHTS

GENERAL DESCRIPTION

1. 2-channel, 1 MSPS, 10-/12-bit ADCs in TSOT package.

2. High throughput with low power consumption.

3. Flexible power/serial clock speed management.

The conversion rate is determined by the serial clock. The

parts also feature a power-down mode to maximize power

efficiency at lower throughput rates. Average power

consumption is reduced when the power-down mode is

used while not converting. Current consumption is 1 µA

maximum and 50 nA typically when in power-down mode.

4. Daisy-chain mode.

The AD7912/AD7922¹are 10-bit and 12-bit, high speed, low

power, 2-channel successive approximation ADCs, respectively.

The parts operate from a single 2.35 V to 5.25 V power supply

and feature throughput rates of up to 1 MSPS. The parts contain

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

can handle input frequencies in excess of 6 MHz.

The conversion process and data acquisition are controlled

using

and the serial clock, allowing the devices to interface

with microprocessors or DSPs. The conversion rate is

determined by the SCLK signal. The input signal is sampled on

5. No pipeline delay.

The parts feature a standard successive approximation ADC

the falling edge of

and the conversion is also initiated at this

with accurate control of the sampling instant via a

and once-off conversion control.

input

point. The channel to be converted is selected through the DIN

pin, and the mode of operation is controlled by . The serial

data stream from the DOUT pin has a channel identifier bit and

mode identifier bit, which provide information about the

converted channel and the current mode of operation.

¹Protected by U.S. Patent Number 6,681,332.

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 that may result from its use.

Specifications subject to change without notice. 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

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AD7922ARM-REEL 替代型号

型号	品牌	替代类型	描述	数据表
AD7922ARMZ-REEL7	ADI	完全替代	2-Channel, 2.35 V to 5.25 V, 1 MSPS, 12-Bit A/D Converter
AD7922ARMZ-REEL	ADI	完全替代	2-Channel, 2.35 V to 5.25 V, 1 MSPS, 12-Bit A/D Converter

与AD7922ARM-REEL相关器件

型号	品牌	获取价格	描述	数据表
AD7922ARM-REEL7	ADI	获取价格	2-Channel, 2.35 V to 5.25 V, 1 MSPS, 10-/12-Bit ADCs
AD7922ARMZ	ROCHESTER	获取价格	2-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO8, MO-187AA, MSOP-8
AD7922ARMZ-REEL	ADI	获取价格	2-Channel, 2.35 V to 5.25 V, 1 MSPS, 12-Bit A/D Converter
AD7922ARMZ-REEL7	ADI	获取价格	2-Channel, 2.35 V to 5.25 V, 1 MSPS, 12-Bit A/D Converter
AD7922AUJ-R2	ADI	获取价格	2-Channel, 2.35 V to 5.25 V, 1 MSPS, 10-/12-Bit ADCs
AD7922AUJ-REEL7	ADI	获取价格	2-Channel, 2.35 V to 5.25 V, 1 MSPS, 10-/12-Bit ADCs
AD7922AUJ-RL2	ADI	获取价格	IC 2-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO8, MO-193BA, TSOT-8, Analo
AD7922AUJZ-REEL7	ADI	获取价格	2-Channel, 2.35 V to 5.25 V, 1 MSPS, 12-Bit A/D Converter
AD7923	ADI	获取价格	4-Channel, 200 kSPS, 12-Bit ADC with Sequencer in 16-Lead TSSOP
AD7923_11	ADI	获取价格	4-Channel, 200 kSPS 12-Bit ADC with Sequencer in 16-Lead TSSOP

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