AD7949BCPZRL7 데이터 시트보기 (PDF) - Analog Devices
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AD7949BCPZRL7 Datasheet PDF : 32 Pages
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AD7949
Data Sheet
SPECIFICATIONS
VDD = 2.3 V to 5.5 V, VIO = 1.8 V to VDD, VREF = VDD, all specifications TMIN to TMAX, unless otherwise noted.
Table 2.
Parameter
RESOLUTION
ANALOG INPUT
Voltage Range
Absolute Input Voltage
Analog Input CMRR
Leakage Current at 25°C
Input Impedance1
THROUGHPUT
Conversion Rate
Full Bandwidth2
¼ Bandwidth2
Transient Response
ACCURACY
No Missing Codes
Integral Linearity Error
Differential Linearity Error
Transition Noise
Gain Error4
Gain Error Match
Gain Error Temperature Drift
Offset Error4
Offset Error Match
Offset Error Temperature Drift
Power Supply Sensitivity
AC ACCURACY5
Dynamic Range
Signal-to-Noise
SINAD
Total Harmonic Distortion
Spurious-Free Dynamic Range
Channel-to-Channel Crosstalk
SAMPLING DYNAMICS
−3 dB Input Bandwidth
Aperture Delay
Test Conditions/Comments
Unipolar mode
Bipolar mode
Positive input, unipolar and bipolar modes
Negative or COM input, unipolar mode
Negative or COM input, bipolar mode
fIN = 250 kHz
Acquisition phase
VDD = 4.5 V to 5.5 V
VDD = 2.3 V to 4.5 V
VDD = 4.5 V to 5.5 V
VDD = 2.3 V to 4.5 V
Full-scale step, full bandwidth
Full-scale step, ¼ bandwidth
REF = VDD = 5 V
VDD = 5 V ± 5%
fIN = 20 kHz, VREF = 5 V
fIN = 20 kHz, VREF = 4.096 V internal REF
fIN = 20 kHz, VREF = 2.5 V internal REF
fIN = 20 kHz, VREF = 5 V
fIN = 20 kHz, VREF = 5 V, −60 dB input
fIN = 20 kHz, VREF = 4.096 V internal REF
fIN = 20 kHz, VREF = 2.5 V internal REF
fIN = 20 kHz
fIN = 20 kHz
fIN = 100 kHz on adjacent channel(s)
Full bandwidth
¼ bandwidth
VDD = 5 V
Min
Typ
14
0
−VREF/2
−0.1
−0.1
VREF/2 − 0.1
VREF/2
68
1
Max
+VREF
+VREF/2
VREF + 0.1
+0.1
VREF/2 + 0.1
0
250
0
200
0
62.5
0
50
1.8
14.5
14
−1
±0.5
+1
−1
±0.25 +1
0.1
−5
±0.5
+5
−1
±0.2
+1
±1
±0.5
−1
±0.2
+1
±1
±0.2
85.6
84.5
85.5
85
84
84
85
33.5
85
84
−100
108
−125
1.7
0.425
2.5
Unit
Bits
V
V
dB
nA
kSPS
kSPS
kSPS
kSPS
μs
μs
Bits
LSB3
LSB
LSB
LSB
LSB
ppm/°C
LSB
LSB
ppm/°C
LSB
dB6
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
MHz
MHz
ns
Rev. F | Page 4 of 32
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