AD7321 datasheet(1/37 Pages) AD

部品番号	AD7321

部品情報	2-Channel, Software-Selectable, True Bipolar Input, 12-Bit Plus Sign ADC

PDF	37 Pages

Scroll/Zoom	100%

メーカー	AD [Analog Devices]

ホームページ	http://www.analog.com

Logo

1 / 37 page

500 kSPS, 2-Channel, Software-Selectable,

True Bipolar Input, 12-Bit Plus Sign ADC

Data Sheet

AD7321

Rev. B

Document Feedback

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

responsibilityisassumedbyAnalogDevicesforitsuse,norforanyinfringementsofpatentsorother

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

Technical Support

www.analog.com

FEATURES

12-bit plus sign SAR ADC

True bipolar input ranges

Software-selectable input ranges

±10 V, ±5 V, ±2.5 V, 0 V to +10 V

500 kSPS throughput rate

2 analog input channels with channel sequencer

Single-ended, true differential, and pseudo differential

analog input capability

High analog input impedance

Low power: 18 mW

Full power signal bandwidth: 22 MHz

Internal 2.5 V reference

High speed serial interface

Power-down modes

14-lead TSSOP package

i

CMOS™ process technology

FUNCTIONAL BLOCK DIAGRAM

VIN0

DOUT

SCLK

CS

DIN

VDRIVE

VIN1

VDD

REFIN/OUT

VCC

AGND

VSS

DGND

CONTROL LOGIC

AND REGISTERS

13-BIT

SUCCESSIVE

APPROXIMATION

ADC

T/H

2.5V

VREF

I/P

MUX

CHANNEL

SEQUENCER

AD7321

Figure 1.

GENERAL DESCRIPTION

The AD73211 is a 2-channel, 12-bit plus sign successive

approximation ADC designed on the iCMOS (industrial

CMOS) process. iCMOS is a process combining high voltage

silicon with submicron CMOS and complementary bipolar

technologies. It enables the development of a wide range of high

performance analog ICs capable of 33 V operation in a footprint

that no previous generation of high voltage parts could achieve.

Unlike analog ICs using conventional CMOS processes, iCMOS

components can accept bipolar input signals while providing

increased performance, dramatically reduced power consumption,

and reduced package size.

The AD7321 can accept true bipolar analog input signals. The

AD7321 has four software-selectable input ranges, ±10 V, ±5 V,

±2.5 V, and 0 V to +10 V. Each analog input channel is indepen-

dently programmed to one of the four input ranges. The analog

input channels on the AD7321 are programmed to be single-ended,

true differential, or pseudo differential.

The ADC contains a 2.5 V internal reference. The AD7321 also

allows for external reference operation. If a 3 V reference is applied

to the REFIN/OUT pin, the AD7321 can accept a true bipolar

±12 V analog input. A minimum of ±12 V VDD and VSS supplies

are required for the ±12 V input range. The ADC has a high speed

serial interface that can operate at throughput rates up to 500 kSPS.

PRODUCT HIGHLIGHTS

1. The AD7321 can accept true bipolar analog input signals,

±10 V, ±5 V, ±2.5 V, and 0 V to +10 V unipolar signals.

2. The two analog inputs are configured as two single-ended

inputs, one true differential input pair, or one pseudo

differential input.

3. A 500 kSPS serial interface. SPI®-/QSPI™-/DSP-/

MICROWIRE™-compatible interface.

4. Low power, 18 mW, at a maximum throughput rate of

500 kSPS.

5. Channel sequencer.

Table 1. Similar Devices

Device

Number

Throughput

Rate

Number of bits

Number of

Channels

AD7329

1000 kSPS

12-bit plus sign

8

AD7328

1000 kSPS

12-bit plus sign

8

AD7327

500 kSPS

12-bit plus sign

8

AD7324

1000 kSPS

12-bit plus sign

4

AD7323

500 kSPS

12-bit plus sign

4

AD7322

1000 kSPS

12-bit plus sign

2

1

Protected by U.S. Patent No. 6,731,232.

同様の部品番号 - AD7321

メーカー	部品番号	データシート	部品情報
Analog Devices	AD7321	577Kb / 36P	500 kSPS, 2-Channel, Software-Selectable, True Bipolar Input, 12-Bit Plus Sign ADC REV. 0
	AD7321BRUZ	577Kb / 36P	500 kSPS, 2-Channel, Software-Selectable, True Bipolar Input, 12-Bit Plus Sign ADC REV. 0
	AD7321BRUZ-REEL	577Kb / 36P	500 kSPS, 2-Channel, Software-Selectable, True Bipolar Input, 12-Bit Plus Sign ADC REV. 0
	AD7321BRUZ-REEL7	577Kb / 36P	500 kSPS, 2-Channel, Software-Selectable, True Bipolar Input, 12-Bit Plus Sign ADC REV. 0
	AD7321	886Kb / 37P	500 kSPS, 2-Channel, Software-Selectable, True Bipolar Input, 12-Bit Plus Sign ADC REV. B

More results

同様の説明 - AD7321

メーカー	部品番号	データシート	部品情報
ATMEL Corporation	AD7322	901Kb / 18P	Software Selectable True Bipolar Input, 2-Channel, 12-Bit Plus Sign ADC
Analog Devices	AD7324	591Kb / 36P	4-Channel, Software-Selectable, True Bipolar Input, 12-Bit Plus Sign ADC REV. 0
	AD7328	880Kb / 36P	8-Channel, Software-Selectable True Bipolar Input, 12-Bit Plus Sign ADC REV. A
	AD7321	886Kb / 37P	500 kSPS, 2-Channel, Software-Selectable, True Bipolar Input, 12-Bit Plus Sign ADC REV. B
	AD7324	920Kb / 37P	4-Channel, Software-Selectable, True Bipolar Input, 12-Bit Plus Sign ADC REV. B
	AD7328	953Kb / 37P	8-Channel, Software-Selectable, True Bipolar Input, 12-Bit Plus Sign ADC REV. C
	AD7323	686Kb / 37P	4-Channel, Software-Selectable, True Bipolar Input, 12-Bit Plus Sign ADC 23-Feb-2017
	AD7324	734Kb / 37P	4-Channel, Software-Selectable, True Bipolar Input, 12-Bit Plus Sign ADC 23-Feb-2017
	AD7327	764Kb / 37P	8-Channel, Software-Selectable, True Bipolar Input, 12-Bit Plus Sign ADC 23-Feb-2017
	AD7328	761Kb / 37P	8-Channel, Software-Selectable, True Bipolar Input, 12-Bit Plus Sign ADC 23-Feb-2017