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AD7402-8BRIZ Datasheet(PDF) 3 Page - Analog Devices

Part # AD7402-8BRIZ
Description  16-Bit, Isolated Sigma-Delta Modulator
Download  20 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

AD7402-8BRIZ Datasheet(HTML) 3 Page - Analog Devices

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Data Sheet
AD7402
Rev. A | Page 3 of 20
SPECIFICATIONS
VDD1 = 4.5 V to 5.5 V, VDD2 = 3 V to 5.5 V, VIN+ = −250 mV to +250 mV, VIN− = 0 V, TA = −40°C to +105°C, tested with sinc3 filter, 256
decimation rate, as defined by Verilog code, unless otherwise noted. All voltages are relative to their respective ground.
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
±1
±5
LSB
Differential Nonlinearity (DNL)1
±0.99
LSB
Guaranteed no missed codes to 16 bits
Offset Error1
±0.2
±0.75
mV
Offset Drift vs. Temperature
1.7
5
µV/°C
Offset Drift vs. VDD1
85
µV/V
Gain Error1
0.2
±0.5
% FSR
Gain Error Drift vs. Temperature
18
32
ppm/°C
11
20
µV/°C
Gain Error Drift vs. VDD1
0.2
mV/V
ANALOG INPUT
Input Voltage Range
−320
+320
mV
Input Common-Mode Voltage Range
−200 to +300
Dynamic Input Current
±19
±28
µA
VIN+ = ±250 mV, VIN− = 0 V
0.05
µA
VIN+ = 0 V, VIN− = 0 V
Input Capacitance
14
pF
DYNAMIC SPECIFICATIONS
VIN+ = 35 Hz
Signal-to-(Noise + Distortion) Ratio (SINAD)1
74
82
dB
Signal-to-Noise Ratio (SNR)1
86
87
dB
Total Harmonic Distortion (THD)1
−84
dB
Peak Harmonic or Spurious Noise (SFDR)1
−84
dB
Effective Number of Bits (ENOB)1
12
13.5
Bits
Noise Free Code Resolution1
14
Bits
ISOLATION TRANSIENT IMMUNITY1
25
30
kV/µs
LOGIC OUTPUTS
Output High Voltage, VOH
VDD2 − 0.1
V
IO = −200 µA
Output Low Voltage, VOL
0.4
V
IO = +200 µA
POWER REQUIREMENTS
VDD1
4.5
5.5
V
VDD2
3
5.5
V
IDD1
26
31
mA
VDD1 = 5.5 V
IDD2
6
7
mA
VDD2 = 5.5 V
4.5
5.5
mA
VDD2 = 3.3 V
POWER DISSIPATION
209
mW
VDD1 = VDD2 = 5.5 V
1
See the Terminology section.


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