AD7266BCPZ

更新时间： 2024-01-17 17:36:22

品牌	Logo	应用领域
亚德诺 - ADI		转换器模数转换器
页数	文件大小	规格书
28页	644K
描述
Differential/Single-Ended Input, Dual

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技术参数
数据手册

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AD7266BCPZ 技术参数

是否无铅：	含铅	是否Rohs认证：	符合
生命周期：	Active	零件包装代码：	QFP
包装说明：	TQFP, TQFP32,.35SQ,32	针数：	32
Reach Compliance Code：	compliant	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	风险等级：	5.4
最大模拟输入电压：	5.25 V	最小模拟输入电压：
最长转换时间：	0.4375 µs	转换器类型：	ADC, SUCCESSIVE APPROXIMATION
JESD-30 代码：	S-PQFP-G32	JESD-609代码：	e3
长度：	7 mm	最大线性误差 (EL)：	0.0366%
湿度敏感等级：	3	模拟输入通道数量：	3
位数：	12	功能数量：	2
端子数量：	32	最高工作温度：	125 °C
最低工作温度：	-40 °C	输出位码：	BINARY, 2'S COMPLEMENT BINARY
输出格式：	SERIAL	封装主体材料：	PLASTIC/EPOXY
封装代码：	TQFP	封装等效代码：	TQFP32,.35SQ,32
封装形状：	SQUARE	封装形式：	FLATPACK, THIN PROFILE
峰值回流温度（摄氏度）：	260	电源：	3/5 V
认证状态：	Not Qualified	采样速率：	2 MHz
采样并保持/跟踪并保持：	TRACK	座面最大高度：	1.2 mm
子类别：	Analog to Digital Converters	标称供电电压：	3 V
表面贴装：	YES	温度等级：	AUTOMOTIVE
端子面层：	Matte Tin (Sn)	端子形式：	GULL WING
端子节距：	0.8 mm	端子位置：	QUAD
处于峰值回流温度下的最长时间：	30	宽度：	7 mm

AD7266BCPZ 数据手册

Differential/Single-Ended Input, Dual

2 MSPS, 12-Bit, 3-Channel SAR ADC

AD7266

FUNCTIONAL BLOCK DIAGRAM

FEATURES

REF SELECT

CAP

Dual 12-bit, 3-channel ADC

Throughput rate: 2 MSPS

BUF

T/H

REF

Specified for V_DDof 2.7 V to 5.25 V

Power consumption

AD7266

9 mW at 1.5 MSPS with 3 V supplies

27 mW at 2 MSPS with 5 V supplies

Pin-configurable analog inputs

12-channel single-ended inputs

6-channel fully differential inputs

6-channel pseudo differential inputs

70 dB SNR at 50 kHz input frequency

Accurate on-chip reference: 2.5 V

0.2ꢀ maximum @ 25°C, 20 ppm/°C maximum

Dual conversion with read 437.5 ns, 32 MHz SCLK

High speed serial interface

SPI®-/QSPI™-/MICROWIRE™-/DSP-compatible

−40°C to +125°C operation

Shutdown mode: 1 μA maximum

32-lead LFCSP and 32-lead TQFP

1 MSPS version, AD7265

12-BIT

SUCCESSIVE

APPROXIMATION

ADC

OUTPUT

DRIVERS

MUX

OUT

SCLK

RANGE

SGL/DIFF

CONTROL

LOGIC

DRIVE

MUX

12-BIT

SUCCESSIVE

APPROXIMATION

ADC

OUTPUT

DRIVERS

T/H

OUT

BUF

AGND AGND AGND

DGND

CAP

GENERAL DESCRIPTION

Figure 1.

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

multiplexer, and a low noise, wide bandwidth track-and-hold

amplifier that can handle input frequencies in excess of 30 MHz.

The AD7266 is available in a 32-lead LFCSP and a

32-lead TQFP.

PRODUCT HIGHLIGHTS

1. Two Complete ADC Functions Allow Simultaneous

Sampling and Conversion of Two Channels.

The conversion process and data acquisition use standard

control inputs allowing easy interfacing to microprocessors 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.

Each ADC has three fully/pseudo differential pairs, or six

single-ended channels, as programmed. The conversion

result of both channels is simultaneously available on

separate data lines, or in succession on one data line if only

one serial port is available.

;

2. High Throughput with Low Power Consumption.

The AD7266 offers a 1.5 MSPS throughput rate with 11.4 mW

maximum power dissipation when operating at 3 V.

3. The AD7266 offers both a standard 0 V to V_REFinput range

and a 2 × V_REFinput range.

The AD7266 uses advanced design techniques to achieve very

low power dissipation at high throughput rates. With 5 V

supplies and a 2 MSPS throughput rate, the part consumes

6.2 mA maximum. The part also offers flexible power/

throughput rate management when operating in normal mode

as the quiescent current consumption is so low.

4. No Pipeline Delay.

The part features two standard successive approximation

ADCs with accurate control of the sampling instant via a

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

to V_REF(or 2 × V_REF) range, with either straight binary or twos

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

reference that can be overdriven when an external reference is

input and once off conversion control.

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

preferred. This external reference range is 100 mV to V_DD

Rev. B

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 registeredtrademarks arethe property of their respective owners.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781.329.4700

www.analog.com

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