Datasheet > EVAL-AD7264EDZ

EVAL-AD7264EDZ

更新时间： 2024-12-01 05:20:43

品牌	Logo	应用领域
亚德诺 - ADI		/
页数	文件大小	规格书
32页	1364K
描述
1 MSPS, 14-Bit, Simultaneous Sampling SAR ADC with PGA and Four Comparators

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EVAL-AD7264EDZ 数据手册

1 MSPS, 14-Bit, Simultaneous Sampling

SAR ADC with PGA and Four Comparators

AD7264

FUNCTIONAL BLOCK DIAGRAM

FEATURES

REF

Dual, simultaneous sampling, 14-bit, 2-channel ADC

True differential analog inputs

Programmable gain stage: ×1, ×2, ×3, ×4, ×6, ×8, ×12, ×16,

×24, ×32, ×48, ×64, ×96, ×128

REF

AD7264

BUF

14-BIT

SUCCESSIVE

APPROXIMATION

ADC

–

OUTPUT

DRIVERS

PGA

T/H

OUT

Throughput rate per ADC

1 MSPS for AD7264

500 kSPS for AD7264-5

SCLK

CAL

Analog input impedance: >1 GΩ

Wide input bandwidth

−3 dB bandwidth: 1.7 MHz at gain = 2

4 on-chip comparators

REFSEL

CONTROL

LOGIC

DRIVE

SNR: 78 dB typical at gain = 2, 71 dB typical at gain = 32

Device offset calibration

System gain calibration

14-BIT

SUCCESSIVE

APPROXIMATION

ADC

–

OUTPUT

DRIVERS

T/H

PGA

OUT

PD0/D

PD1

PD2

On-chip reference: 2.5 V

BUF

−40°C to +105°C operation

REF

High speed serial interface

_C V

B CC

Compatible with SPI, QSPI™, MICROWIRE™, and DSP

48-lead LFCSP and LQFP packages

OUTPUT

OUT

DRIVERS

–

COMP

OUTPUT

DRIVERS

OUT

GENERAL DESCRIPTION

COMP

_C _GND

The AD7264 is a dual, 14-bit, high speed, low power, successive

approximation ADC that operates from a single 5 V power supply

and features throughput rates of up to 1 MSPS per on-chip

ADC (500 kSPS for the AD7264-5). Two complete ADC func-

tions allow simultaneous sampling and conversion of two

channels. Each ADC is preceded by a true differential analog

input with a PGA. There are 14 gain settings available: ×1, ×2,

×3, ×4, ×6, ×8, ×12, ×16, ×24, ×32, ×48, ×64, ×96, and ×128.

_C V

D CC

–

OUTPUT

DRIVERS

OUT

COMP

OUTPUT

DRIVERS

OUT

COMP

_C _GND

AGND

DGND

Figure 1.

The AD7264 contains four comparators. Comparator A and

Comparator B are optimized for low power, whereas Comparator C

and Comparator D have fast propagation delays. The AD7264

features a calibration function to remove any device offset error

and programmable gain adjust registers to allow for input path

(for example, sensor) offset and gain compensation. The AD7264

has an on-chip 2.5 V reference that can be disabled if an external

reference is preferred. The AD7264 is available in 48-lead LFCSP

and LQFP packages.

PRODUCT HIGHLIGHTS

1. Integrated PGA with a variety of flexible gain settings to

allow detection and conversion of low level analog signals.

2. Each PGA is followed by a dual simultaneous sampling

ADC, featuring throughput rates of 1 MSPS per ADC

(500 kSPS for the AD7264-5). The conversion result of

both ADCs is simultaneously available on separate data

lines or in succession on one data line if only one serial

port is available.

3. Four integrated comparators that can be used to count

signals from pole sensors in motor control applications.

4. Internal 2.5 V reference.

The AD7264 is ideally suited for monitoring small amplitude

signals from a variety of sensors. The parts include all the

functionality needed for monitoring the position feedback signals

from a variety of analog encoders used in motor control systems.

Rev. A

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

Fax: 781.461.3113

www.analog.com

12 3 4 5 6 7...32

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与EVAL-AD7264EDZ相关器件

型号	品牌	获取价格	描述	数据表
EVAL-AD7265CB	ADI	获取价格	Differential/Single-Ended Input, Dual 1 MSPS, 12-Bit, 3-Channel SAR ADC
EVAL-AD7265CB1	ADI	获取价格	Differential Input, Dual 1 MSPS, 12-Bit, 3-Channel SAR ADC
EVAL-AD7266CB1	ADI	获取价格	Differential Input, Dual 2 MSPS, 12-Bit, 3-Channel SAR ADC
EVAL-AD7266EDZ	ADI	获取价格	Differential/Single-Ended Input, Dual
EVAL-AD7273CB	ADI	获取价格	3 MSPS,10-/12-Bit ADCs in 8-Lead TSOT
EVAL-AD7273CB3	ADI	获取价格	3 MSPS,10-/12-Bit ADCs in 8-Lead TSOT
EVAL-AD7274CB	ADI	获取价格	3 MSPS,10-/12-Bit ADCs in 8-Lead TSOT
EVAL-AD7274CB3	ADI	获取价格	3 MSPS,10-/12-Bit ADCs in 8-Lead TSOT
EVAL-AD7276CBZ	ADI	获取价格	3 MSPS, 12-/10-/8-Bit ADCs in 6-Lead TSOT
EVAL-AD7291SDZ	ADI	获取价格	8-Channel, I2C, 12-Bit SAR ADC with Temperature Sensor

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