AD7621(Rev0) 데이터 시트보기 (PDF) - Analog Devices
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AD7621 Datasheet PDF : 32 Pages
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AD7621
SPECIFICATIONS
AVDD = DVDD = 2.5 V; OVDD = 2.3 V to 3.6 V; VREF = 2.5 V; all specifications TMIN to TMAX, unless otherwise noted.
Table 2.
Parameter
Conditions
Min
Typ Max
Unit
RESOLUTION
16
Bits
ANALOG INPUT
Voltage Range
Operating Input Voltage
Analog Input CMRR
Input Current
Input Impedance2
VIN+ − VIN−
VIN+, VIN− to AGND
fIN = 100 kHz
3 MSPS throughput
−VREF
−0.1
VREF
V
AVDD1
V
55
dB
25
μA
THROUGHPUT SPEED
Complete Cycle
Throughput Rate
Time Between Conversions
Complete Cycle
Throughput Rate
Wideband warp, warp modes
Wideband warp, warp modes
Wideband warp, warp modes
Normal mode
Normal mode
0.001
0
333
ns
3
MSPS
1
ms
500
ns
2
MSPS
Complete Cycle
Impulse mode
800
ns
Throughput Rate
Impulse mode
0
1.25
MSPS
DC ACCURACY
Integral Linearity Error3
No Missing Codes
Differential Linearity Error
Transition Noise
Transition Noise
Zero Error, TMIN to TMAX5
Zero Error Temperature Drift
Gain Error, TMIN to TMAX5
Gain Error Temperature Drift
Power Supply Sensitivity
All modes
VREF = 2.048 V, PDREF = high
VREF = 2.048 V, PDREF = high
VREF = 2.048 V, PDREF = high
VREF = 2.5 V
VREF = 2.048 V
AVDD = 2.5 V ± 5%
−2
16
−1
−30
−0.38
±1 +2
+2
0.69
0.82
+30
±1
+0.38
±2
±3
LSB4
Bits
LSB
LSB
LSB
LSB
ppm/°C
% of FSR
ppm/°C
LSB
AC ACCURACY
Dynamic Range
fIN = 20 kHz, VREF = 2.5 V
90.5
dB6
Signal-to-Noise
fIN = 20 kHz, VREF = 2.5 V
88
90
dB
fIN = 20 kHz, VREF = 2.048 V
86
88
dB
fIN = 100 kHz, VREF = 2.5 V
89.2
dB
Spurious-Free Dynamic Range
fIN = 20 kHz
103
dB
fIN = 100 kHz
101
dB
Total Harmonic Distortion
fIN = 20 kHz
–102
dB
fIN = 100 kHz
−100
dB
Signal-to-(Noise + Distortion)
fIN = 20 kHz, VREF = 2.5 V
87.5
89.8
dB
fIN = 20 kHz, VREF = 2.048 V
87.5
dB
fIN = 100 kHz, VREF = 2.5 V
89
dB
–3 dB Input Bandwidth
50
MHz
SAMPLING DYNAMICS
Aperture Delay
Aperture Jitter
1
ns
5
ps rms
Transient Response
Full-scale step
50
ns
INTERNAL REFERENCE
PDREF = PDBUF = low
Output Voltage
REF @ 25°C
2.038
2.048 2.058
V
Temperature Drift
Line Regulation
–40°C to +85°C
AVDD = 2.5 V ± 5%
±7
ppm/°C
±15
ppm/V
Rev. 0 | Page 3 of 32
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