AD7266BSU

更新时间： 2024-11-28 23:16:15

品牌	Logo	应用领域
亚德诺 - ADI		/
页数	文件大小	规格书
17页	700K
描述
Differential Input, Dual 2 MSPS, 12-Bit, 3-Channel SAR ADC

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AD7266BSU 数据手册

Differential Input, Dual 2 MSPS,

12-Bit, 3-Channel SAR ADC

Preliminary Technical Data

AD7266

FUNCTIONAL BLOCK DIAGRAM

FEATURES

Dual 12-bit, 3-channel ADC

REF SELECT

CAP

Fast throughput rate: 2 MSPS

Specified for V_DDof 2.7 V to 5.25 V

Low power: 12 mW max at 1.5 MSPS with 3 V supplies

30 mW max at 2 MSPS with 5 V supplies

Wide input bandwidth

70 dB SNR at 100 kHz input frequency

On-chip reference: 2.5 V

–40°C to +125°C operation

BUF

T/H

REF

AD7266

12-BIT

SUCCESSIVE

APPROXIMATION

ADC

OUTPUT

DRIVERS

MUX

OUT

SCLK

Flexible power/throughput rate management

Simultaneous conversion/read

No pipeline delays

High speed serial interface SPI®/QSPI™/MICROWIRE™/DSP

compatible

RANGE

SGL/DIFF

CONTROL

LOGIC

DRIVE

Shutdown mode: 1 µA max

32-lead LFCSP and TQFP packages

MUX

12-BIT

SUCCESSIVE

APPROXIMATION

ADC

OUTPUT

DRIVERS

T/H

OUT

GENERAL DESCRIPTION

BUF

The AD7266¹is a dual, 12-bit, high speed, low power, successive

approximation ADC that operates from a single 2.7 V to 5.25 V

power supply and features throughput rates up to 2 MSPS. The

device contains two ADCs, each preceded by a 3-channel multi-

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

that can handle input frequencies in excess of 10 MHz.

AGND AGND AGND

DGND

CAP

Figure 1

PRODUCT HIGHLIGHTS

1. The AD7266 features two complete ADC functions that allow

simultaneous sampling and conversion of two channels. Each

ADC has 2 analog inputs, 3 fully differential pairs, or 6 single-

ended channels as programmed. The conversion result of both

channels is available simultaneously on separate data lines, or

in succession on one data line if only one serial port is

available.

The conversion process and data acquisition are controlled using

standard control inputs, allowing easy interfacing to microproces-

sors or DSPs. The input signal is sampled on the falling edge of

conversion is also initiated at this point. The conversion time is

;

determined by the SCLK frequency. There are no pipelined delays

associated with the part.

The AD7266 uses advanced design techniques to achieve very low

2. High Throughput with Low Power Consumption

The AD7266 offers a 1.5 MSPS throughput rate with 8 mW

maximum power consumption when operating at 3 V.

power dissipation at high throughput rates. With 5 V supplies and a

2 MSPS throughput rate, the part consumes 4 mA maximum. The

part also offers flexible power/throughput rate management when

operating in sleep mode.

3. Flexible Power/Throughput Rate Management

The conversion rate is determined by the serial clock, allowing

power consumption to be reduced as conversion time is re-

duced through an SCLK frequency increase. Power efficiency

can be maximized at lower throughput rates if the part enters

sleep between conversions.

The analog input range for the part can be selected to be a 0 V to

V_REFrange or a 2V_REFrange with either straight binary or twos

complement output coding. The AD7266 has an on-chip 2.5 V

reference that can be overdriven if an external reference is pre-

ferred. This external reference range is 100 mV to 2.5 V. The

AD7266 is available in 32-lead lead frame chip scale (LFCSP) and

thin quad flat (TQFP) packages.

4. No Pipeline Delay

The part features two standard successive approximation

ADCs with accurate control of the sampling instant via a

input and once off conversion control.

¹Protected by U.S. Patent No. 6,681,332.

Rev. PrG

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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AD7266BSU 替代型号

型号	品牌	替代类型	描述	数据表
AD7266BSUZ-REEL7	ADI	功能相似	Differential/Single-Ended Input, Dual
AD7266BSUZ-REEL	ADI	功能相似	Differential/Single-Ended Input, Dual
AD7266BSUZ	ADI	功能相似	Differential/Single-Ended Input, Dual 2 MSPS, 12-Bit, 3-Channel SAR ADC

与AD7266BSU相关器件

型号	品牌	获取价格	描述	数据表
AD7266BSUZ	ADI	获取价格	Differential/Single-Ended Input, Dual 2 MSPS, 12-Bit, 3-Channel SAR ADC
AD7266BSUZ-REEL	ADI	获取价格	Differential/Single-Ended Input, Dual
AD7266BSUZ-REEL7	ADI	获取价格	Differential/Single-Ended Input, Dual
AD7273	ADI	获取价格	3MSPS,10-/12-Bit ADCs in 8-Lead TSOT
AD7273_15	ADI	获取价格	3 MSPS,10-/12-Bit ADCs in 8-Lead TSOT
AD72731	ADI	获取价格	3 MSPS,10-/12-Bit ADCs in 8-Lead TSOT
AD7273BRM	ADI	获取价格	3MSPS,10-/12-Bit ADCs in 8-Lead TSOT
AD7273BRMZ	ADI	获取价格	3 MSPS,10-/12-Bit ADCs in 8-Lead TSOT
AD7273BRMZ	ROCHESTER	获取价格	1-CH 10-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO8, ROHS COMPLIANT, MO-187AA,
AD7273BRMZ2	ADI	获取价格	3 MSPS,10-/12-Bit ADCs in 8-Lead TSOT

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