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| 型號： | AD7321BRUZ-REEL7 |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 1/37頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC ADC 12BIT+ SAR 2CHAN 14TSSOP |
| 標(biāo)準(zhǔn)包裝： | 1,000 |
| 位數(shù)： | 12 |
| 采樣率（每秒）： | 500k |
| 數(shù)據(jù)接口： | DSP，MICROWIRE?，QSPI?，串行，SPI? |
| 轉(zhuǎn)換器數(shù)目： | 1 |
| 功率耗散（最大）： | 17mW |
| 電壓電源： | 雙 ± |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 14-TSSOP（0.173"，4.40mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 14-TSSOP |
| 包裝： | 帶卷 (TR) |
| 輸入數(shù)目和類型： | 2 個單端，單極；2 個單端，雙極；1 個差分，單極；1 個差分，雙極 |
| 配用： | EVAL-AD7321CBZ-ND - BOARD EVALUATION FOR AD7321 |
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500 kSPS, 2-Channel, Software-Selectable,
True Bipolar Input, 12-Bit Plus Sign ADC
Data Sheet
Rev. B
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
2006–2013 Analog Devices, Inc. All rights reserved.
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
05399-
001
Figure 1.
GENERAL DESCRIPTION
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
1000 kSPS
12-bit plus sign
8
1000 kSPS
12-bit plus sign
8
500 kSPS
12-bit plus sign
8
1000 kSPS
12-bit plus sign
4
500 kSPS
12-bit plus sign
4
1000 kSPS
12-bit plus sign
2
1
Protected by U.S. Patent No. 6,731,232.
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| AD7322BRUZ | 功能描述:IC ADC 12BIT+ SAR 2CHAN 14TSSOP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 標(biāo)準(zhǔn)包裝:1 系列:microPOWER™ 位數(shù):8 采樣率（每秒）:1M 數(shù)據(jù)接口:串行，SPI? 轉(zhuǎn)換器數(shù)目:1 功率耗散（最大）:- 電壓電源:模擬和數(shù)字 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:24-VFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:24-VQFN 裸露焊盤（4x4） 包裝:Digi-Reel® 輸入數(shù)目和類型:8 個單端，單極 產(chǎn)品目錄頁面:892 (CN2011-ZH PDF) 其它名稱:296-25851-6 |
| AD7322BRUZ-REEL | 功能描述:IC ADC 12BIT+SAR 2CHAN 14-TSSOP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 標(biāo)準(zhǔn)包裝:1,000 系列:- 位數(shù):16 采樣率（每秒）:45k 數(shù)據(jù)接口:串行 轉(zhuǎn)換器數(shù)目:2 功率耗散（最大）:315mW 電壓電源:模擬和數(shù)字 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:28-SOIC（0.295"，7.50mm 寬） 供應(yīng)商設(shè)備封裝:28-SOIC W 包裝:帶卷 (TR) 輸入數(shù)目和類型:2 個單端，單極 |
| AD7322BRUZ-REEL7 | 功能描述:IC ADC 12BIT+ SAR 2CHAN 14TSSOP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 標(biāo)準(zhǔn)包裝:1,000 系列:- 位數(shù):16 采樣率（每秒）:45k 數(shù)據(jù)接口:串行 轉(zhuǎn)換器數(shù)目:2 功率耗散（最大）:315mW 電壓電源:模擬和數(shù)字 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:28-SOIC（0.295"，7.50mm 寬） 供應(yīng)商設(shè)備封裝:28-SOIC W 包裝:帶卷 (TR) 輸入數(shù)目和類型:2 個單端，單極 |
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