EVAL-AD7985EBZ(Rev0) View Datasheet(PDF) - Analog Devices
Part Name
Description
Manufacturer
EVAL-AD7985EBZ Datasheet PDF : 28 Pages
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AD7985
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
RESOLUTION
ANALOG INPUT
Voltage Range
Absolute Input Voltage
Leakage Current at 25°C
Input Impedance
ACCURACY
No Missing Codes
Differential Nonlinearity Error, DNL
Integral Nonlinearity Error, INL
Transition Noise
Gain Error, TMIN to TMAX2
Gain Error Temperature Drift
Zero Error, TMIN to TMAX2
Zero Temperature Drift
Power Supply Sensitivity
THROUGHPUT
Conversion Rate
Transient Response
AC ACCURACY
Dynamic Range
Signal-to-Noise Ratio, SNR
Spurious-Free Dynamic Range, SFDR
Total Harmonic Distortion4, THD
Signal-to-Noise-and-Distortion Ratio,
SINAD
SAMPLING DYNAMICS
−3 dB Input Bandwidth
Aperture Delay
Test Conditions/Comments
Min
16
Typ
Max
(IN+) − (IN−)
IN+
IN−
Acquisition phase
0
VREF
−0.1
VREF + 0.1
−0.1
+0.1
250
See the Analog Inputs section
AVDD = 2.5 V ± 5%
16
−0.99
−1.50
−15
−0.99
±0.50
±0.7
0.8
±2
±0.8
±0.08
0.55
90
+0.99
+1.50
+15
+0.99
0
2.5
Full-scale step
100
VREF = 4.096 V, internal reference 87.5
VREF = 5.0 V, external reference
89.0
fIN = 20 kHz, VREF = 4.096 V, internal 87.0
reference
fIN = 20 kHz, VREF = 5.0 V, external 89.0
reference
fIN = 20 kHz
fIN = 20 kHz, VREF = 4.096 V, internal
reference
fIN = 20 kHz, VREF = 4.096 V
89
90
88.5
90.0
103
−100
90.5
19
0.7
Unit
Bits
V
V
V
nA
Bits
LSB1
LSB1
LSB1
LSB1
ppm/°C
mV
ppm/°C
dB3
MSPS
ns
dB3
dB3
dB3
dB3
dB3
dB3
dB3
MHz
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.
Rev. 0 | Page 3 of 28
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