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AD7985BCPZ-RL7 Datasheet(Hoja de datos) 3 Page - Analog Devices

No. de Pieza. AD7985BCPZ-RL7
Descripción  16-Bit, 2.5 MSPS, PulSAR 15.5 mW ADC in LFCSP
Descarga  28 Pages
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Fabricante  AD [Analog Devices]
Página de inicio  http://www.analog.com
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AD7985
Rev. 0 | Page 3 of 28
SPECIFICATIONS
AVDD = DVDD = 2.5 V, BVDD = 5 V, VIO = 1.8 V to 2.7 V, VREF = 4.096 V, TA = −40°C to +85°C, unless otherwise noted.
Table 2.
Parameter
Test Conditions/Comments
Min
Typ
Max
Unit
RESOLUTION
16
Bits
ANALOG INPUT
Voltage Range
(IN+) − (IN−)
0
VREF
V
Absolute Input Voltage
IN+
−0.1
VREF + 0.1
V
IN−
−0.1
+0.1
V
Leakage Current at 25°C
Acquisition phase
250
nA
Input Impedance
See the Analog Inputs section
ACCURACY
No Missing Codes
16
Bits
Differential Nonlinearity Error, DNL
−0.99
±0.50
+0.99
LSB1
Integral Nonlinearity Error, INL
−1.50
±0.7
+1.50
LSB1
Transition Noise
0.8
LSB1
Gain Error, TMIN to TMAX2
−15
±2
+15
LSB1
Gain Error Temperature Drift
±0.8
ppm/°C
Zero Error, TMIN to TMAX2
−0.99
±0.08
+0.99
mV
Zero Temperature Drift
0.55
ppm/°C
Power Supply Sensitivity
AVDD = 2.5 V ± 5%
90
dB3
THROUGHPUT
Conversion Rate
0
2.5
MSPS
Transient Response
Full-scale step
100
ns
AC ACCURACY
Dynamic Range
VREF = 4.096 V, internal reference
87.5
89
dB3
VREF = 5.0 V, external reference
89.0
90
dB3
Signal-to-Noise Ratio, SNR
fIN = 20 kHz, VREF = 4.096 V, internal
reference
87.0
88.5
dB3
fIN = 20 kHz, VREF = 5.0 V, external
reference
89.0
90.0
dB3
Spurious-Free Dynamic Range, SFDR
fIN = 20 kHz
103
dB3
Total Harmonic Distortion4, THD
fIN = 20 kHz, VREF = 4.096 V, internal
reference
−100
dB3
Signal-to-Noise-and-Distortion Ratio,
SINAD
fIN = 20 kHz, VREF = 4.096 V
90.5
dB3
SAMPLING DYNAMICS
−3 dB Input Bandwidth
19
MHz
Aperture Delay
0.7
ns
1 LSB means least significant bit. With the ±4.096 V input range, one LSB is 62.5 μV.
2 See the Terminology section. These specifications include full temperature range variation but not the error contribution from the external reference.
3 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.
4 Tested fully in production at fIN = 1 kHz.




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