參數(shù)資料
型號： AD7712ARZ-REEL7
廠商： Analog Devices Inc
文件頁數(shù)： 23/28頁
文件大?。?/td> 0K
描述： IC ADC 24BIT SGNL CONDTNR 24SOIC
標(biāo)準(zhǔn)包裝： 400
位數(shù)： 24
采樣率（每秒）： 1.03k
數(shù)據(jù)接口： 串行
轉(zhuǎn)換器數(shù)目： 1
功率耗散（最大）： 45mW
電壓電源： 模擬和數(shù)字，雙 ±
工作溫度： -40°C ~ 85°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 W
包裝： 帶卷 (TR)
輸入數(shù)目和類型： 1 個(gè)單端，單極；1 個(gè)差分，單極；1 個(gè)差分，雙極
REV. F
–4–
AD7712–SPECIFICATIONS
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
AD7712 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.
Parameter
A, S Versions
1
Unit
Conditions/Comments
POWER REQUIREMENTS
Power Supply Voltages
AVDD Voltage
18
+5 to +10
V nom
±5% for Specified Performance
DVDD Voltage
19
+5
V 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
20
Rejection w.r.t. AGND; Assumes VBIAS Is Fixed
Positive Supply (AVDD and DVDD)
21
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
Normal Mode
52.5
mW max
AVDD = DVDD = +5 V, VSS = –5 V; Typically 30 mW
Standby (Power-Down) Mode
22
200
W max
AVDD = DVDD = +5 V, VSS = 0 V or –5 V; Typically 100
W
NOTES
18The AD7712 is specified with a 10 MHz clock for AV
DD voltages of +5 V
± 5%. It is specified with an 8 MHz clock for AV
DD 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 guaranteed only over the 0 C to 70 C temperature range.
19The
±5% tolerance on the DV
DD input is allowed provided that DVDD does not exceed AVDD by more than 0.3 V.
20Measured at dc and applies in the selected passband. 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.
21PSRR 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.
22Using the hardware STANDBY pin. Standby power dissipation using the software standby bit (PD) of the Control Register is 8 mW typ.
Specifications subject to change without notice.
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
AIN1 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
REF OUT to AGND . . . . . . . . . . . . . . . . . . . . –0.3 V to AVDD
ORDERING GUIDE
Model
Temperature Range Package Options
*
AD7712AN
–40
°C to +85°C
N-24
AD7712AR
–40
°C to +85°C
RW-24
AD7712AR-REEL
–40
°C to +85°C
RW-24
AD7712AR-REEL7 –40
°C to +85°C
RW-24
AD7712AQ
–40
°C to +85°C
Q-24
AD7712SQ
–55
°C to +125°C
Q-24
EVAL-AD7712EB
Evaluation Board
*N = PDIP, Q = CERDIP; RW = SOIC.
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.
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