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ADUM7703 Datasheet(PDF) 3 Page - Analog Devices

No. de pieza ADUM7703
Descripción Electrónicos  16-Bit, Isolated, Sigma-Delta ADC
PDF  22 Pages
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Fabricante Electrónico  AD [Analog Devices]
Página de inicio  http://www.analog.com
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ADUM7703 Datasheet(HTML) 3 Page - Analog Devices

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Data Sheet
ADuM7703
Rev. 0 | Page 3 of 22
SPECIFICATIONS
VDD1 = 4.5 V to 20 V, VDD2 = 3 V or 5.5 V, VIN+ = −250 mV to +250 mV, VIN− = 0 V, TA = −40°C to +125°C (16-lead SOIC_W), TA = −40°C to
+105°C (8-lead SOIC_IC), MCLKIN frequency (fMCLKIN) = 20 MHz, tested with a sinc3 filter, and a 256 decimation rate, unless otherwise noted.
Table 1.
Parameter
Min
Typ
Max
Unit
Test Conditions/Comments
STATIC PERFORMANCE
Resolution
16
Bits
Filter output truncated to 16 bits
Integral Nonlinearity (INL)1
±2
±5
LSB
Differential Nonlinearity (DNL)1
±0.99
LSB
Guaranteed no missed codes to 16 bits
Offset Error1
±0.05
±0.13
mV
Initial at TA = 25°C
±0.1
±0.18
mV
Offset Drift vs. Temperature1
±0.1
±0.6
μV/°C
Offset Drift vs. VDD1
±0.1
μV/V
Gain Error1
±0.2
% FSR
Initial at TA = 25°C
Gain Error Drift vs. Temperature1
±12.5
±28
ppm/°C
±8
±18
μV/°C
Gain Error Drift vs. VDD1
±5
ppm/V
ANALOG INPUT
Input Voltage Range
−320
+320
mV
Full-scale range
−250
+250
mV
For specified performance
Input Common-Mode Voltage Range
−0.2 to +0.8
V
Dynamic Input Current
±1
±2
μA
VIN+ = ±250 mV, VIN− = 0 V
0.05
μA
VIN+ = 0 V, VIN− = 0 V
DC Leakage Current
±0.01
μA
Input Capacitance
25
pF
DYNAMIC SPECIFICATIONS
VIN+ = 1 kHz
Signal-to-Noise-and-Distortion Ratio (SINAD)1
82
86
dB
SNR1
83
86
dB
Total Harmonic Distortion (THD)1
−84
−99
dB
Peak Harmonic or Spurious-Free Dynamic
Range Noise (SFDR)1
−97
dB
Effective Number of Bits (ENOB)1
13.3
14
Bits
ISOLATION COMMON-MODE TRANSIENT
IMMUNITY (CMTI)1
Common-mode voltage (|VCM|) = 2 kV
Static and Dynamic
75
150
kV/μs
VDD2 = 5.5 V
150
kV/μs
VDD2 = 3.3 V
LOGIC INPUTS
CMOS with Schmitt trigger
Input High Voltage (VIH)
0.7 × VDD2
V
Input Low Voltage (VIL)
0.3 × VDD2
V
Input Current (IIN)
±0.6
μA
Input Capacitance (CIN)
10
pF
LOGIC OUTPUTS
Output High Voltage (VOH)
VDD2 − 0.4
VDD2 − 0.2
V
Output current (IOUT) = −4 mA
Output Low Voltage (VOL)
0.2
0.4
V
IOUT = 4 mA



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