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| 型號： | EVAL-AD7747EBZ |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 23/28頁 |
| 文件大?。?/td> | 0K |
| 描述： | BOARD EVAL FOR AD7747 |
| 標準包裝： | 1 |
| 傳感器類型： | 觸摸，電容式 |
| 接口： | I²C |
| 電源電壓： | 2.7 V ~ 5.25 V |
| 嵌入式： | 否 |
| 已供物品： | 板，纜線，CD |
| 已用 IC / 零件： | AD7747 |
| 產(chǎn)品目錄頁面： | 781 (CN2011-ZH PDF) |
| 相關產(chǎn)品： | AD7747ARUZ-REEL7-ND - IC CONV CAP TO DIG 24BIT 16TSSOP AD7747ARUZ-REEL-ND - IC CONV CAP TO DIG 24BIT 16TSSOP AD7747ARUZ-ND - IC CONV 24BIT CAP-DGTL 16-TSSOP |
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AD7747
Rev. 0 | Page 4 of 28
Parameter
Min
Typ
Max
Unit
Test Conditions/Comments
Normal Mode Rejection5
75
dB
50 Hz ± 1%, conversion time = 122.1 ms
50
dB
60 Hz ± 1%, conversion time = 122.1 ms
Common-Mode Rejection2
95
dB
VIN = 1 V
INTERNAL VOLTAGE REFERENCE
Voltage
1.169
1.17
1.171
V
TA = 25°C
Drift vs. Temperature
5
ppm/°C
EXTERNAL VOLTAGE REFERENCE INPUT
Differential REFIN Voltage2
0.1
2.5
VDD
V
Absolute REFIN Voltage2
GND 0.03
VDD + 0.03
V
Average REFIN Input Current
400
nA/V
Average REFIN Input Current Drift
±50
pA/V/°C
Common-Mode Rejection
80
dB
SERIAL INTERFACE LOGIC INPUTS (SCL, SDA)
VIH Input High Voltage
2.1
V
VIL Input Low Voltage
0.8
V
Hysteresis
150
mV
Input Leakage Current (SCL)
±0.1
±1
μA
OPEN-DRAIN OUTPUT (SDA)
VOL Output Low Voltage
0.4
V
ISINK = 6.0 mA
IOH Output High Leakage Current
0.1
1
μA
VOUT = VDD
LOGIC OUTPUT (RDY)
VOL Output Low Voltage
0.4
V
ISINK = 1.6 mA, VDD = 5 V
VOH Output High Voltage
4.0
V
ISOURCE = 200 μA, VDD = 5 V
VOL Output Low Voltage
0.4
V
ISINK = 100 μA, VDD = 3 V
VOH Output High Voltage
VDD 0.6
V
ISOURCE = 100 μA, VDD = 3 V
POWER REQUIREMENTS
VDD-to-GND Voltage
4.75
5.25
V
VDD = 5 V, nominal
2.7
3.6
V
VDD = 3.3 V, nominal
IDD Current
850
μA
Digital inputs equal to VDD or GND
750
μA
VDD = 5 V
700
μA
VDD = 3.3 V
IDD Current Power-Down Mode
0.5
2
μA
Digital inputs equal to VDD or GND
1 Capacitance units: 1 pF = 1012 F; 1 fF = 1015 F; 1 aF = 1018 F. Full scale (FS) = 8.192 pF; full-scale range (FSR) = ±8.192 pF.
2 Specification is not production tested, but is supported by characterization data at initial product release.
3 Factory calibrated. The absolute error includes factory gain calibration error, integral nonlinearity error, and offset error after system offset calibration, all at 25°C.
At different temperatures, compensation for gain drift over temperature is required.
4 The capacitive input offset can be eliminated using a system offset calibration. The accuracy of the system offset calibration is limited by the offset calibration register
LSB size (32 aF) or by converter + system p-p noise during the system capacitive offset calibration, whichever is greater. To minimize the effect of the converter +
system noise, longer conversion times should be used for system capacitive offset calibration. The system capacitance offset calibration range is ±1 pF; the larger
offset can be removed using CAPDACs.
5 Specification is not production tested, but guaranteed by design.
6 The gain error is factory calibrated at 25°C. At different temperatures, compensation for gain drift over temperature is required.
7 The VTCHOP bit in the VT SETUP register must be set to 1 for the specified temperature sensor and voltage input performance.
8 Using an external temperature sensing diode 2N3906, with nonideality factor nf = 1.008, connected as in Figure 37, with total serial resistance <100 Ω.
9 Full-scale error applies to both positive and negative full scale.
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| EVAL-AD7760EDZ | 功能描述:BOARD EVAL CONTROL AD7760 RoHS:是 類別:編程器，開發(fā)系統(tǒng) >> 評估板 - 模數(shù)轉換器 (ADC) 系列:- 產(chǎn)品培訓模塊:Obsolescence Mitigation Program 標準包裝:1 系列:- ADC 的數(shù)量:1 位數(shù):12 采樣率（每秒）:94.4k 數(shù)據(jù)接口:USB 輸入范圍:±VREF/2 在以下條件下的電源（標準）:- 工作溫度:-40°C ~ 85°C 已用 IC / 零件:MAX11645 已供物品:板，軟件 |
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