DataSheetWiki


AD7322 fiches techniques PDF

Analog Devices - 12-Bit Plus Sign ADC

Numéro de référence AD7322
Description 12-Bit Plus Sign ADC
Fabricant Analog Devices 
Logo Analog Devices 





1 Page

No Preview Available !





AD7322 fiche technique
Data Sheet
2-Channel, Software-Selectable, True
Bipolar Input, 1 MSPS, 12-Bit Plus Sign ADC
AD7322
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
1 MSPS throughput rate
Two analog input channels with channel sequencer
Single-ended, true differential, and pseudo differential
analog input capability
High analog input impedance
Low power: 21 mW
Full power signal bandwidth: 22 MHz
Internal 2.5 V reference
High speed serial interface
Power-down modes
14-lead TSSOP package
iCMOS process technology
GENERAL DESCRIPTION
The AD73221 is a 2-channel, 12-bit plus sign, successive approx-
imation analog-to-digital converter (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 develop-
ment 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 AD7322 can accept true bipolar analog input signals. The
AD7322 has four software-selectable input ranges, ±10 V, ±5 V,
±2.5 V, and 0 V to +10 V. Each analog input channel can be
independently programmed to one of the four input ranges.
The analog input channels on the AD7322 can be programmed
to be single-ended, true differential, or pseudo differential.
The ADC contains a 2.5 V internal reference. The AD7322 also
allows for external reference operation. If a 3 V reference is
applied to the REFIN/OUT pin, the AD7322 can accept a true
bipolar ±12 V analog input. Minimum ±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 1 MSPS.
1 Protected by U.S. Patent No. 6,731,232.
FUNCTIONAL BLOCK DIAGRAM
VDD REFIN/OUT VCC
AD7322
VIN0
VIN1
I/P
MUX
2.5V
VREF
T/H
13-BIT
SUCCESSIVE
APPROXIMATION
ADC
CHANNEL
SEQUENCER
CONTROL LOGIC
AND REGISTERS
DOUT
SCLK
CS
DIN
VDRIVE
AGND
VSS DGND
Figure 1.
PRODUCT HIGHLIGHTS
1. The AD7322 can accept true bipolar analog input signals,
±10 V, ±5 V, and ±2.5 V, and 0 V to +10 V unipolar signals.
2. The two analog inputs can be configured as two single-
ended inputs, one true differential input, or one pseudo
differential input.
3. 1 MSPS serial interface. SPI-/QSPI™-/DSP-/MICROWIRE™-
compatible interface.
4. Low power, 31 mW maximum, at 1 MSPS throughput rate.
5. Channel sequencer.
Table 1. Similar Devices
Device Throughput
Number Rate
AD7329 1000 kSPS
AD7328 1000 kSPS
AD7327 500 kSPS
AD7324 1000 kSPS
AD7323 500 kSPS
AD7321 500 kSPS
Number of bits
12-bit plus sign
12-bit plus sign
12-bit plus sign
12-bit plus sign
12-bit plus sign
12-bit plus sign
Number of
Channels
8
8
8
4
4
2
Rev. B
Document Feedback
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.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700 ©2005–2013 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com

PagesPages 30
Télécharger [ AD7322 ]


Fiche technique recommandé

No Description détaillée Fabricant
AD7321 12-Bit Plus Sign ADC Analog Devices
Analog Devices
AD7322 12-Bit Plus Sign ADC Analog Devices
Analog Devices
AD7323 12-Bit Plus Sign ADC Analog Devices
Analog Devices
AD7324 12-Bit Plus Sign ADC Analog Devices
Analog Devices

US18650VTC5A

Lithium-Ion Battery

Sony
Sony
TSPC106

PCI Bus Bridge Memory Controller

ATMEL
ATMEL
TP9380

NPN SILICON RF POWER TRANSISTOR

Advanced Semiconductor
Advanced Semiconductor


www.DataSheetWiki.com    |   2020   |   Contactez-nous  |   Recherche