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參數(shù)資料
| 型號(hào)： | AD7699 |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | 16-Bit, 8-Channel, 250 kSPS PulSAR㈢ ADC. |
| 中文描述： | 16位，8通道，250 kSPS的PulSAR系列㈢ADC的。 |
| 文件頁數(shù)： | 3/20頁 |
| 文件大小： | 2041K |
| 代理商： | AD7699 |
Preliminary Technical Data
AD7689
SPECIFICATIONS
VDD = 2.5 V to 5.5 V, VIO = 2.3 V to VDD, V
REF
= VDD, all specifications T
MIN
to T
MAX
, unless otherwise noted.
Table 2.
Parameter
Conditions/Comments
RESOLUTION
ANALOG INPUT
Voltage Range
Unipolar mode
Bipolar mode
Absolute Input Voltage
Positive input, unipolar and
bipolar mode
Negative or COM input, unipolar
mode
Negative or COM input, bipolar
mode
Analog Input CMRR
f
IN
= 250 kHz
Leakage Current at 25°C
Acquisition phase
Input Impedance
1
THROUGHPUT
Conversion Rate
VDD = 4.096V to 5.5
VDD = 2.5V to 4.096V
Transient Response
Full-scale step
ACCURACY
No Missing Codes
Integral Linearity Error
Differential Linearity Error
Transition Noise
REF = VDD = 5 V
Gain Error
3
Gain Error Match
Gain Error Temperature Drift
Offset Error
3
Offset Error Match
Offset Error Temperature Drift
Power Supply Sensitivity
VDD = 5 V
±
5%
AC ACCURACY
4
Dynamic Range
Signal-to-Noise
f
IN
= 20 kHz, VREF = 5V
f
IN
= 20 kHz, VREF = 2.5V
Signal-to-(Noise + Distortion)
f
IN
= 20 kHz, VREF = 5V
f
IN
= 20 kHz, VREF = 2.5V
Total Harmonic Distortion
f
IN
= 20 kHz
Spurious-Free Dynamic Range
f
IN
= 20 kHz
Channel-to-Channel Crosstalk
f
IN
= 100 kHz on adjacent
channel(s)
Intermodulation Distortion
6
SAMPLING DYNAMICS
3 dB Input Bandwidth
Selectable
Aperture Delay
VDD = 5V
1
See the Analog Inputs section.
2
LSB means least significant bit. With the 5 V input range, one LSB is 76.3 μV.
3
See the Terminology section. These specifications include full temperature range variation but not the error contribution from the external reference.
4
With V
REF
= 5 V, unless otherwise noted.
5
All specifications expressed in decibels are referred to a full-scale input FSR and tested with an input signal at 0.5 dB below full scale, unless otherwise specified.
6
f
IN1
= 21.4 kHz and f
IN2
= 18.9 kHz, with each tone at 7 dB below full scale.
Rev. PrC | Page 3 of 20
Min
16
0
V
REF
/2
0.1
Typ
Max
+V
REF
+V
REF
/2
V
REF
+ 0.1
Unit
Bits
V
V
0.1
+0.1
V
REF
/2 – 0.1
V
REF
/2
V
REF
/2 + 0.1
0
1
16
-2
1
30
5
TBD
1
±0.6
±0.25
0.5
±0.5
TBD
±0.3
±0.5
TBD
±0.3
±1
93.5
92.5
88.5
92.5
88.5
100
110
-117
250
200
1.8
+2
+1.5
+30
+5
dB
nA
kSPS
μ
s
Bits
LSB
2
LSB
LSB
LSB
LSB
ppm/°C
LSB
LSB
ppm/°C
ppm
dB
5
dB
dB
dB
dB
dB
dB
0.425
115
1.7
2.5
dB
MHz
ns
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