VDD = 2.3 V to 5.25 V, VIO = 2.3 V to VDD, VREF " />
參數(shù)資料
型號: EVAL-AD7691CBZ
廠商: Analog Devices Inc
文件頁數(shù): 22/28頁
文件大?。?/td> 0K
描述: BOARD EVALUATION FOR AD7691CBZ
標準包裝: 1
系列: PulSAR®
ADC 的數(shù)量: 1
位數(shù): 18
采樣率(每秒): 250k
數(shù)據(jù)接口: 串行
輸入范圍: ±VREF
在以下條件下的電源(標準): 10.6mW @ 250kSPS,5 V
工作溫度: -40°C ~ 85°C
已用 IC / 零件: AD7691
已供物品:
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Data Sheet
AD7691
Rev. C | Page 3 of 28
SPECIFICATIONS
VDD = 2.3 V to 5.25 V, VIO = 2.3 V to VDD, VREF = VDD, all specifications TMIN to TMAX, unless otherwise noted.
Table 2.
Parameter
Conditions/Comments
Min
Typ
Max
Unit
RESOLUTION
18
Bits
ANALOG INPUT
Voltage Range, VIN
IN+ (IN)
VREF
+VREF
V
Absolute Input Voltage
IN+, IN
0.1
VREF + 0.1
V
Common-Mode Input Range
IN+, IN
VREF/2 0.1
VREF/2
VREF/2 + 0.1
V
Analog Input CMRR
fIN = 250 kHz
65
dB
Leakage Current at 25°C
Acquisition phase
1
nA
Input Impedance1
THROUGHPUT
Conversion Rate
VDD = 4.5 V to 5.25 V
0
250
kSPS
VDD = 2.3 V to 4.5 V
0
180
kSPS
Transient Response
Full-scale step
1.8
μs
ACCURACY
No Missing Codes
18
Bits
Integral Linearity Error
1.5
±0.75
+1.5
LSB2
Differential Linearity Error
1
±0.5
+1.25
LSB2
Transition Noise
REF = VDD = 5 V
0.75
LSB2
Gain Error3
VDD = 4.5 V to 5.25 V
40
±2
+40
LSB2
VDD = 2.3 V to 4.5 V
80
±2
+80
LSB2
Gain Error Temperature Drift
±0.3
ppm/°C
Zero Error3
VDD = 4.5 V to 5.25 V
0.8
±0.1
+0.8
mV
VDD = 2.3 V to 4.5 V
3.5
±0.7
+3.5
mV
Zero Temperature Drift
±0.3
ppm/°C
Power Supply Sensitivity
VDD = 5 V
± 5%
±0.25
LSB2
AC ACCURACY4
Dynamic Range
VREF = 5 V
101
102
dB
Oversampled Dynamic Range5
fIN = 1 kSPS
125
dB
Signal-to-Noise
fIN = 1 kHz, VREF = 5 V
100
101.5
dB
fIN = 1 kHz, VREF = 2.5 V
95
96.5
dB
Spurious-Free Dynamic Range
fIN = 1 kHz, VREF = 5 V
125
dB
Total Harmonic Distortion
fIN = 1 kHz, VREF = 5 V
118
dB
Signal-to-(Noise + Distortion)
fIN = 1 kHz, VREF = 5 V
100
101.5
dB
fIN = 1 kHz, VREF = 2.5 V
95
96.5
dB
Intermodulation Distortion6
115
dB
1 See the Analog Inputs section.
2 LSB means least significant bit. With the ±5 V input range, one LSB is 38.15 μV.
3 See the Terminology section. These specifications include full temperature range variation but not the error contribution from the external reference.
4 All ac accuracy specifications in dB are referred to a full-scale input FSR. Tested with an input signal at 0.5 dB below full scale, unless otherwise specified.
5 Dynamic range obtained by oversampling the ADC running at a throughput fS of 250 kSPS, followed by postdigital filtering with an output word rate fO.
6 fIN1 = 21.4 kHz and fIN2 = 18.9 kHz, with each tone at 7 dB below full scale.
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