AD7887AR-REEL7 datasheet(1/24 Pages) AD

tên linh kiện	AD7887AR-REEL7

Giải thích chi tiết về linh kiện	2.7 V to 5.25 V, Micropower, 2-Channel, 125 kSPS, 12-Bit ADC in 8-Lead MSOP

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2.7 V to 5.25 V, Micropower, 2-Channel,

125 kSPS, 12-Bit ADC in 8-Lead MSOP

AD7887

Rev. D

Information furnished by Analog Devices is believed to be accurate and reliable. However, no

responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringementsof patentsorother

rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No

license is granted by implication or otherwise under any patent or patent rights of Analog Devices.

Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.

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

Tel: 781.329.4700

www.analog.com

Fax: 781.461.3113

FEATURES

Specified for VDD of 2.7 V to 5.25 V

Flexible power/throughput rate management

Shutdown mode: 1 μA max

One or two single-ended inputs

Serial interface: SPI®/QSPI™/MICROWIRE™/DSP compatible

8-lead narrow SOIC and MSOP packages

APPLICATIONS

Battery-powered systems (personal digital assistants,

medical instruments, mobile communications)

Instrumentation and control systems

High speed modems

FUNCTIONAL BLOCK DIAGRAM

SAR + ADC

CONTROL LOGIC

GND

AIN0

SCLK

DOUT

DIN

VDD

AD7887

CS

T/H

I/P

MUX

BUF

CHARGE

REDISTRIBUTION

DAC

COMP

AIN1/

VREF

AIN1/VREF

SOFTWARE

CONTROL

LATCH

2.5V

REF

SPORT

Figure 1.

GENERAL DESCRIPTION

The AD7887 is a high speed, low power, 12-bit analog-to-digital

converter (ADC) that operates from a single 2.7 V to 5.25 V

power supply. The AD7887 is capable of 125 kSPS throughput

rate. The input track-and-hold acquires a signal in 500 ns and

features a single-ended sampling scheme. The output coding for

the AD7887 is straight binary, and the part is capable of

converting full power signals of up to 2.5 MHz.

The AD7887 can be configured for either dual- or single-channel

operation via the on-chip control register. There is a default

single-channel mode that allows the AD7887 to be operated as a

read-only ADC. In single-channel operation, there is one

analog input (AIN0) and the AIN1/VREF pin assumes its VREF

function. This VREF pin allows the user access to the part’s

internal 2.5 V reference, or the VREF pin can be overdriven by an

external reference to provide the reference voltage for the part.

This external reference voltage has a range of 2.5 V to VDD. The

analog input range on AIN0 is 0 to VREF.

In dual-channel operation, the AIN1/VREF pin assumes its AIN1

function, providing a second analog input channel. In this case,

the reference voltage for the part is provided via the VDD pin. As

a result, the input voltage range on both the AIN0 and AIN1

inputs is 0 to VDD.

CMOS construction ensures low power dissipation of typically

2 mW for normal operation and 3 μW in power-down mode.

The part is available in an 8-lead, 0.15-inch-wide narrow body

SOIC and an 8-lead MSOP package.

PRODUCT HIGHLIGHTS

1.

Smallest 12-bit dual-/single-channel ADC; 8-lead MSOP

package.

2.

Lowest power 12-bit dual-/single-channel ADC.

3.

Flexible power management options, including automatic

power-down after conversion.

4.

Read-only ADC capability.

5.

Analog input range from 0 V to VREF.

6.

Versatile serial input/output port (SPI/QSPI/MICROWIRE/

DSP compatible).

Số phần tương tự - AD7887AR-REEL7

nhà sản xuất	tên linh kiện	bảng dữ liệu	Giải thích chi tiết về linh kiện
Analog Devices	AD7887AR-REEL7	465Kb / 25P	Micropower, 2-Channel, 125 kSPS, 12-Bit ADC in 8-Lead MSOP

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nhà sản xuất	tên linh kiện	bảng dữ liệu	Giải thích chi tiết về linh kiện
Analog Devices	AD7887	392Kb / 24P	2.7 V to 5.25 V, Micropower, 2-Channel, 125 kSPS, 12-Bit ADC in 8-Lead MSOP Rev. E
	AD7887	133Kb / 16P	2.7 V to 5.25 V, Micropower, 2-Channel, 125 kSPS, 12-Bit ADC in 8-Lead uSOIC REV. B
	AD7888	197Kb / 17P	2.7 V to 5.25 V, Micropower, 8-Channel, 125 kSPS, 12-Bit ADC in 16-Lead TSSOP REV. C
	AD7888ARUZ-REEL7	197Kb / 17P	2.7 V to 5.25 V, Micropower, 8-Channel, 125 kSPS, 12-Bit ADC in 16-Lead TSSOP REV. C
	AD7887	465Kb / 25P	Micropower, 2-Channel, 125 kSPS, 12-Bit ADC in 8-Lead MSOP
	AD7888	175Kb / 16P	2.7V to 5.25 V Micropower 8-Channel 125 kSPS 12-Bit ADC in 16-Lead TSSOP REV. B
	AD7888	245Kb / 18P	Micropower, 8-Channel, 125 kSPS, 12-Bit ADC in 16-Lead TSSOP
	AD7896	1Mb / 16P	2.7 V to 5.5 V, 12-Bit ADC in 8-Lead SOIC/PDIP
	AD7911	312Kb / 28P	2-Channel, 2.35 V to 5.25 V 250 kSPS, 10-/12-Bit ADCs REV. 0
	AD7911	353Kb / 28P	2-Channel, 2.35 V to 5.25 V 250 kSPS, 10-/12-Bit ADCs REV. A

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