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参数资料
型号： AD7711AQ
厂商： Analog Devices Inc
文件页数： 23/28页
文件大小： 0K
描述： IC ADC 24BIT RTD I SOURCE 24CDIP
标准包装： 15
位数： 24
采样率（每秒）： 1.03k
数据接口： 串行
转换器数目： 1
功率耗散（最大）： 52.5mW
电压电源： 模拟和数字，双 ±
工作温度： -40°C ~ 80°C
安装类型： 通孔
封装/外壳： 24-CDIP（0.300"，7.62mm）
供应商设备封装： 24-CDIP
包装： 管件
输入数目和类型： 1 个单端，单极；1 个单端，双极；1 个差分，单极；1 个差分，双极
ORDERING GUIDE
Model
Temperature Range
Package Option
*
AD7711AN
–40
∞C to +85∞C
N-24
AD7711AR
–40
∞C to +85∞C
R-24
AD7711AR-REEL
–40
∞C to +85∞C
R-24
AD7711AR-REEL7 –40
∞C to +85∞C
R-24
AD7711AQ
–40
∞C to +85∞CQ-24
AD7711SQ
–55
∞C to +125∞CQ-24
EVAL-AD7711EB
Evaluation Board
*N = Plastic DIP, Q = CERDIP, R = SOIC.
Parameter
A, S Versions1
Unit
Conditions/Comments
POWER REQUIREMENTS
Power Supply Voltages
AVDD Voltage
16
5 to 10
V nom
±5% for Specified Performance
DVDD Voltage
17
5V nom
±5% for Specified Performance
AVDD – VSS Voltage
10.5
V max
For Specified Performance
Power Supply Currents
AVDD Current
4
mA max
DVDD Current
4.5
mA max
VSS Current
1.5
mA max
VSS = –5 V
Power Supply Rejection
18
Rejection w.r.t. AGND; Assumes VBIAS Is Fixed
Positive Supply (AVDD and DVDD)
See Note 19
dB typ
Negative Supply (VSS)90
dB typ
Power Dissipation
Normal Mode
45
mW max
AVDD = DVDD = +5 V, VSS = 0 V; Typically 25 mW
52.5
mW max
AVDD = DVDD = +5 V, VSS = –5 V; Typically 30 mW
Standby (Power-Down) Dissipation
15
mW max
AVDD = DVDD = +5 V, VSS = 0 V or –5 V; Typically 7 mW
NOTES
16The AD7711 is specified with a 10 MHz clock for AV
DD voltages of 5 V
± 5%. It is specified with an 8 MHz clock for AVDD voltages greater than 5.25 V and less
than 10.5 V. Operating with AVDD voltages in the range 5.25 V to 10.5 V is only guaranteed over the 0
∞C to 70∞C temperature range.
17The
±5% tolerance on the DVDD input is allowed provided DVDD does not exceed AVDD by more than 0.3 V.
18Measured at dc and applies in the selected pass band. PSRR at 50 Hz will exceed 120 dB with filter notches of 10 Hz, 25 Hz, or 50 Hz. PSRR at 60 Hz will exceed
120 dB with filter notches of 10 Hz, 30 Hz, or 60 Hz.
19PSRR depends on gain: Gain of 1 = 70 dB typ; Gain of 2: 75 dB typ; Gain of 4 = 80 dB typ; Gains of 8 to 128 = 85 dB typ. These numbers can be improved (to
95 dB typ) by deriving the VBIAS voltage (via Zener diode or reference) from the AVDD supply.
Specifications subject to change without notice.
AD7711–SPECIFICATIONS
REF OUT to AGND . . . . . . . . . . . . . . . . . . . . –0.3 V to AVDD
Digital Input Voltage to DGND . . . . . –0.3 V to AVDD + 0.3 V
Digital Output Voltage to DGND . . . –0.3 V to DVDD + 0.3 V
Operating Temperature Range
Commercial (A Version) . . . . . . . . . . . . . . . . –40
∞C to +85∞C
Extended (S Version) . . . . . . . . . . . . . . . . . –55
∞C to +125∞C
Storage Temperature Range . . . . . . . . . . . . . –65
∞C to +150∞C
Lead Temperature (Soldering, 10 secs) . . . . . . . . . . . . . 300
∞C
Power Dissipation (Any Package) to 75
∞C . . . . . . . . . . 450 mW
*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 listed in the operational
sections of the specification is not implied. Exposure to absolute maximum rating
conditions for extended periods may affect device reliability.
ABSOLUTE MAXIMUM RATINGS
*
(TA = 25
∞C, unless otherwise noted.)
AVDD to DVDD . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +12 V
AVDD to VSS . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +12 V
AVDD to AGND . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +12 V
AVDD to DGND . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +12 V
DVDD to AGND . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +6 V
DVDD to DGND . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +6 V
VSS to AGND . . . . . . . . . . . . . . . . . . . . . . . . . +0.3 V to –6 V
VSS to DGND . . . . . . . . . . . . . . . . . . . . . . . . . +0.3 V to –6 V
Analog Input Voltage to AGND
. . . . . . . . . . . . . . . . . . . . . . . . . VSS – 0.3 V to AVDD + 0.3 V
Reference Input Voltage to AGND
. . . . . . . . . . . . . . . . . . . . . . . . . VSS – 0.3 V to AVDD + 0.3 V
REV. G
–4–
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
AD7711 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.
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