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AD7401_0612 Scheda tecnica(PDF) 3 Page - Analog Devices

Il numero della parte AD7401_0612
Spiegazioni elettronici  Isolated Sigma-Delta Modulator
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Homepage  http://www.analog.com
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AD7401_0612 Scheda tecnica(HTML) 3 Page - Analog Devices

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AD7401
Rev. A | Page 3 of 20
SPECIFICATIONS
VDD1 = 4.5 V to 5.25 V, VDD2 = 3 V to 5.5 V, VIN+ = −200 mV to +200 mV, and VIN− = 0 V (single-ended); TA = TMIN to TMAX,
fMCLK = 16 MHz maximum, tested with Sinc3 filter, 256 decimation rate, as defined by Verilog code, unless otherwise noted.
Table 1.
Parameter
Y Version1, 2
Unit
Test Conditions/Comments
STATIC PERFORMANCE
Resolution
16
Bits min
Filter output truncated to 16 bits
Integral Nonlinearity3
±15
LSB max
−40°C to +85°C; ±2 LSB typical; fMCLK = 20 MHz maximum4
±25
LSB max
>85°C to 105°C
±55
LSB max
fMCLK = 20 MHz maximum4; VIN+ = −250 mV to +250 mV
Differential Nonlinearity3
±0.9
LSB max
Guaranteed no missed codes to 16 bits;
fMCLK = 20 MHz maximum4; VIN+ = −250 mV to +250 mV
Offset Error3
±0.6
mV max
fMCLK = 20 MHz maximum4; VIN+ = −250 mV to +250 mV
±50
μV typ
TA = 25°C
Offset Drift vs. Temperature3
3.5
μV/°C max
−40°C to +105°C
1
μV/°C typ
Offset Drift vs. VDD13
120
μV/V typ
Gain Error3
±1.6
mV max
−40°C to +85°C
±2
mV max
>85°C to 105°C
±1
mV typ
fMCLK = 20 MHz maximum4; VIN+ = −250 mV to +250 mV
Gain Error Drift vs. Temperature3
23
μV/°C typ
−40°C to +105°C
Gain Error Drift vs. VDD13
110
μV/V typ
ANALOG INPUT
Input Voltage Range
±200
mV min/mV max
For specified performance; full range ±320 mV
Dynamic Input Current
±9
μA max
VIN+ = 400 mV, VIN− = 0 V
DC Leakage Current
±0.5
μA max
Input Capacitance
10
pF typ
DYNAMIC SPECIFICATIONS
VIN+ = 5 kHz, 400 mV p-p sine
Signal-to-(Noise + Distortion) Ratio (SINAD)3
70
dB min
−40°C to +85°C; fMCLK = 9 MHz to 20 MHz4
68
dB min
−40°C to +85°C; fMCLK = 5 MHz to <9 MHz
65
dB min
>85°C to 105°C
65
dB min
fMCLK = 20 MHz maximum4; VIN+ = −250 mV to +250 mV
81
dB typ
Signal-to-Noise Ratio (SNR)3
80
dB min
−40°C to +105°C; 82 dB typ
80
dB min
fMCLK = 20 MHz maximum4; VIN+ = −250 mV to +250 mV
Total Harmonic Distortion (THD)3
−92
dB typ
fMCLK = 20 MHz maximum4; VIN+ = −250 mV to +250 mV
Peak Harmonic or Spurious Noise (SFDR)3
−92
dB typ
Effective Number of Bits (ENOB)3
11.5
Bits
Isolation Transient Immunity3
25
kV/μs min
30
kV/μs typ
LOGIC INPUTS
Input High Voltage, VIH
0.8 × VDD2
V min
Input Low Voltage, VIL
0.2 × VDD2
V max
Input Current, IIN
±0.5
μA max
Input Capacitance, CIN5
10
pF max
LOGIC OUTPUTS
Output High Voltage, VOH
VDD2 − 0.1
V min
IO = −200 μA
Output Low Voltage, VOL
0.4
V max
IO = +200 μA


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