CREF
參數(shù)資料
型號(hào): EVAL-AD7643CBZ
廠商: Analog Devices Inc
文件頁數(shù): 23/28頁
文件大?。?/td> 0K
描述: BOARD EVALUATION FOR AD7643
標(biāo)準(zhǔn)包裝: 1
系列: PulSAR®
ADC 的數(shù)量: 1
位數(shù): 18
采樣率(每秒): 1.25M
數(shù)據(jù)接口: 串行,并聯(lián)
輸入范圍: ±VREF
在以下條件下的電源(標(biāo)準(zhǔn)): 65mW @ 1.25MSPS
工作溫度: -40°C ~ 85°C
已用 IC / 零件: AD7643
已供物品:
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AD7643
Rev. 0 | Page 4 of 28
Parameter
Conditions
Min
Typ
Max
Unit
Turn-On Settling Time
CREF = 10 μF
5
ms
REFBUFIN Output Voltage
REFBUFIN @ 25°C
1.19
V
REFBUFIN Output Resistance
6.33
EXTERNAL REFERENCE
PDREF = PDBUF = high
Voltage Range
REF
1.8
2.5
AVDD + 0.1
V
Current Drain
1.25 MSPS throughput
100
μA
REFERENCE BUFFER
PDREF = high, PDBUF = low
REFBUFIN Input Voltage Range
REF = 2.048 V typical
1.05
1.2
1.30
V
REFBUFIN Input Current
REFBUFIN = 1.2 V
1
nA
TEMPERATURE PIN
Voltage Output
@ 25°C
278
mV
Temperature Sensitivity
1
mV/°C
Output Resistance
4.7
DIGITAL INPUTS
Logic Levels
VIL
0.3
+0.6
V
VIH
1.7
5.25
V
IIL
1
+1
μA
IIH
1
+1
μA
DIGITAL OUTPUTS
Data Format7
Pipeline Delay8
VOL
ISINK = 500 μA
0.4
V
VOH
ISOURCE = 500 μA
OVDD 0.3
V
POWER SUPPLIES
Specified Performance
AVDD
2.37
2.5
2.63
V
DVDD
2.37
2.5
2.63
V
OVDD
2.309
3.6
V
Operating Current10
1.25 MSPS throughput
AVDD11
With internal reference
24
mA
DVDD
1.5
mA
0.5
mA
Power Dissipation10, 11
With Internal Reference
1.25 MSPS throughput
65
80
mW
With External Reference
1.25 MSPS throughput
60
75
mW
In Power-Down Mode12
PD = high
2
μW
TEMPERATURE RANGE13
Specified Performance
TMIN to TMAX
40
+85
°C
1 When using an external reference. With the internal reference, the input range is 0.1 V to VREF.
3 Linearity is tested using endpoints, not best fit.
4 LSB means least significant bit. With the ±2.048 V input range, 1 LSB is 15.63 μV.
5 See Voltage Reference Input section. These specifications do not include the error contribution from the external reference.
6 All specifications in dB are referred to a full-scale input FS. Tested with an input signal at 0.5 dB below full-scale, unless otherwise specified.
7 Parallel or serial 18-bit.
8 Conversion results are available immediately after completed conversion.
10 Tested in parallel reading mode.
11 With internal reference, PDREF and PDBUF are low; with external reference, PDREF and PDBUF are high.
12 With all digital inputs forced to OVDD.
13 Consult sales for extended temperature range.
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