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參數(shù)資料
| 型號： | AD7721ARZ |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 12/16頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC ADC 16BIT SIGMA-DELTA 28SOIC |
| 標(biāo)準(zhǔn)包裝： | 27 |
| 位數(shù)： | 16 |
| 采樣率（每秒）： | 468.75k |
| 數(shù)據(jù)接口： | 串行，并聯(lián) |
| 轉(zhuǎn)換器數(shù)目： | 1 |
| 功率耗散（最大）： | 150mW |
| 電壓電源： | 模擬和數(shù)字 |
| 工作溫度： | -40°C ~ 85°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： | 管件 |
| 輸入數(shù)目和類型： | 1 個差分，單極；1 個差分，雙極 |
AD7721
REV. A
–5–
ABSOLUTE MAXIMUM RATINGS
1
(TA = +25°C unless otherwise stated)
DVDD to DGND . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +7 V
AVDD to AGND . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +7 V
AVDD to DVDD . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +0.3 V
AGND to DGND . . . . . . . . . . . . . . . . . . . . –0.3 V to +0.3 V
Digital Input Voltage to DGND . . . –0.3 V to DVDD + 0.3 V
Analog Input Voltage to AGND . . . . –0.3 V to AVDD + 0.3 V
Input Current to Any Pin Except Supplies2
. . . . . . .
±10 mA
Operating Temperature Range
Industrial (A Version) . . . . . . . . . . . . . . . . . –40
°C to +85°C
Extended (S Version) . . . . . . . . . . . . . . . . –55
°C to +125°C
Storage Temperature Range . . . . . . . . . . . . –65
°C to +150°C
Maximum Junction Temperature . . . . . . . . . . . . . . . +150
°C
Plastic Package
θ
JA Thermal Impedance
. . . . . . . . . . . . . . . . . . . . . 74
°C/W
Lead Temperature, Soldering (10 sec) . . . . . . . . . . +260
°C
Cerdip Package
θ
JA Thermal Impedance
. . . . . . . . . . . . . . . . . . . . . 51
°C/W
Lead Temperature, Soldering (10 sec) . . . . . . . . . . +300
°C
SOIC Package
θ
JA Thermal Impedance
. . . . . . . . . . . . . . . . . . . . . 72
°C/W
Lead Temperature, Soldering
Vapor Phase (60 sec) . . . . . . . . . . . . . . . . . . . . . . +215
°C
Infrared (15 sec) . . . . . . . . . . . . . . . . . . . . . . . . . +220
°C
NOTES
1Stresses above those listed under Absolute Maximum Ratings may cause perma-
nent damage to the device. This is a stress rating only; functional operation of the
device at these or any other conditions above those listed in the operational
sections of this specification is not implied. Exposure to absolute maximum
rating conditions for extended periods may affect device reliability.
2Transient currents of up to 100 mA will not cause SCR latchup.
CAUTION
ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily
accumulate on the human body and test equipment and can discharge without detection.
Although this device features proprietary ESD protection circuitry, permanent damage may
occur on devices subjected to high energy electrostatic discharges. Therefore, proper ESD
precautions are recommended to avoid performance degradation or loss of functionality.
ORDERING GUIDE
Model
Temperature Range
Package Option*
AD7721AN
–40
°C to +85°C
N-28
AD7721AR
–40
°C to +85°C
R-28
AD7721SQ
–55
°C to +125°C
Q-28
*N = Plastic DIP; R = 0.3" Small Outline IC (SOIC); Q = Cerdip.
PIN CONFIGURATION
14
13
12
11
17
16
15
20
19
18
10
9
8
1
2
3
4
7
6
5
TOP VIEW
(Not to Scale)
28
27
26
25
24
23
22
21
AD7721
SCLK/DB7
DVAL/
SYNC
WR
RD
DB6
DB8
DB9
RFS/DB10
VIN1
VIN2
AGND
SDATA/DB11
DGND
DSUBST
DGND
STBY/DB0
DVDD
AVDD
AGND
REFIN
CAL/DB1
UNI/DB2
DB3
DB4
CS
SYNC/DB5
DRDY
CLK
WARNING!
ESD SENSITIVE DEVICE
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| AD7721ARZ-REEL | 功能描述:IC ADC 16BIT SIGMA-DELTA 28SOIC 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):12 采樣率（每秒）:300k 數(shù)據(jù)接口:并聯(lián) 轉(zhuǎn)換器數(shù)目:1 功率耗散（最大）:75mW 電壓電源:單電源 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:24-SOIC（0.295"，7.50mm 寬） 供應(yīng)商設(shè)備封裝:24-SOIC 包裝:帶卷 (TR) 輸入數(shù)目和類型:1 個單端，單極；1 個單端，雙極 |
| AD7721SQ | 制造商:AD 制造商全稱:Analog Devices 功能描述:CMOS 16-Bit, 468.75 kHz, Sigma-Delta ADC |
| AD7722 | 制造商:AD 制造商全稱:Analog Devices 功能描述:16-Bit, 195 kSPS CMOS, Sigma-Delta ADC |
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| AD7722AS-ES | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
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