(TA = 25 °C, unless otherwise noted" />
參數(shù)資料
型號(hào)： AD7725BSZ
廠商： Analog Devices Inc
文件頁數(shù)： 27/28頁
文件大?。?/td> 0K
描述： IC ADC 16BIT PROG 44MQFP
產(chǎn)品變化通告： AD7725BSZ Discontinuation 16/Mar/2012
標(biāo)準(zhǔn)包裝： 1
位數(shù)： 16
采樣率（每秒）： 900k
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）： 30mW
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： 44-QFP
供應(yīng)商設(shè)備封裝： 44-MQFP（10x10）
包裝： 托盤
輸入數(shù)目和類型： 2 個(gè)單端，單極；2 個(gè)單端，雙極；1 個(gè)差分，雙極
配用： EVAL-AD7725CBZ-ND - BOARD EVALUATION FOR AD7725
REV. A
–8–
AD7725
ABSOLUTE MAXIMUM RATINGS
1
(TA = 25
°C, unless otherwise noted.)
DVDD to DGND . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +7 V
AVDD to AGND . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +7 V
AVDD, AVDD1 to DVDD . . . . . . . . . . . . . . . . . . . . –1 V to +1 V
AGND, AGND1 to DGND . . . . . . . . . . . . . –0.3 V to +0.3 V
Digital Inputs to DGND . . . . . . . . . . –0.3 V to DVDD + 0.3 V
Digital Outputs to DGND . . . . . . . . . –0.3 V to DVDD + 0.3 V
VIN(+), VIN(–) to AGND . . . . . . . . . . . –0.3 V to AVDD + 0.3 V
REF1 to AGND . . . . . . . . . . . . . . . . . –0.3 V to AVDD + 0.3 V
REF2 to AGND . . . . . . . . . . . . . . . . . –0.3 V to AVDD + 0.3 V
REFIN to AGND . . . . . . . . . . . . . . . . –0.3 V to AVDD + 0.3 V
DGND, AGND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
±0.3 V
Input Current to Any Pin except Supplies
2
. . . . . . . . .
±10 mA
IDD (AIDD + DIDD) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150 mA
Operating Temperature Range . . . . . . . . . . . . –40
°C to +85°C
Storage Temperature Range . . . . . . . . . . . . . –65
°C to +150°C
Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . 150
°C
JA Thermal Impedance . . . . . . . . . . . . . . . . . . . . . . . . 58
°C/W
JC Thermal Impedance . . . . . . . . . . . . . . . . . . . . . . . . 20
°C/W
Lead Temperature, Soldering
Vapor Phase (60 sec) . . . . . . . . . . . . . . . . . . . . . . . . . 215
°C
Infrared (15 sec) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 220
°C
ESD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 kV
NOTES
1 Stresses 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 indicated in the operational
section of this specification is not implied. Exposure to absolute maximum rating
conditions for extended periods may affect device reliability.
2 Transient currents of up to 100 mA will not cause SCR latch-up.
ORDERING GUIDE
Temperature
Package
Model
Range
Description
Option1
AD7725BS
–40
°C to +85°CMetric Quad S-44-2
Flatpack
AD7725BS-REEL –40
°C to +85°CMetric Quad S-44-2
Flatpack
EVAL-
Evaluation
AD7725CB
2
Board
EVAL-
Controller
CONTROL
Board
BRD2
3
NOTES
1S = Metric Quad Flat Package (MQFP).
2This board can be used as a standalone evaluation board or in conjunction with the
Evaluation Board Controller for evaluation/demonstration purposes. It is accom-
panied by software and technical documentation.
3Evaluation Board Controller. This board is a complete unit allowing a PC to
control and communicate with all Analog Devices boards ending in the CB
designator. To obtain the complete evaluation kit, the following needs to be
ordered: EVAL-AD7725CB, EVAL-CONTROL BRD2, and a 12 V ac transformer.
The Filter Wizard software can be downloaded from the Analog Devices website.
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 the
AD7725 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.
STATUS
INSTRUCTION
DB0 DB15
–
INT
RS
CS
RD/
WR
t34
t33
t40
t36
t35
t38
t23
t37
t39
THREE-STATE
Figure 8. Parallel Mode (Reading the Status Register and Writing Instructions)
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