AD7401_15 Datasheet, PDF (3/20 Pages) Analog Devices – Isolated Sigma-Delta Modulator

AD7401
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
STATIC PERFORMANCE
Resolution
Integral Nonlinearity³
Differential Nonlinearity³
Y Version^{1, 2}
16
±15
±25
±55
±0.9
Offset Error³
Offset Drift vs. Temperature
Offset Drift vs. VDD1
Gain Error³
Gain Error Drift vs. Temperature
Gain Error Drift vs. VDD1
ANALOG INPUT
Input Voltage Range
Dynamic Input Current
DC Leakage Current
Input Capacitance
DYNAMIC SPECIFICATIONS
Signal-to-(Noise + Distortion) Ratio (SINAD)³
Signal-to-Noise Ratio (SNR)
Total Harmonic Distortion (THD)³
Peak Harmonic or Spurious Noise (SFDR)³
Effective Number of Bits (ENOB)³
Isolation Transient Immunity³
LOGIC INPUTS
Input High Voltage, VIH
Input Low Voltage, VIL
Input Current, IIN
Input Capacitance, CIN5
±0.6
±50
3.5
1
120
±1.6
±2
±1
23
110
±200
±9
±0.5
10
70
68
65
65
81
80
80
−92
−92
11.5
25
30
0.8 × VDD2
0.2 × VDD2
±0.5
10
Unit
Test Conditions/Comments
Bits min
LSB max
LSB max
LSB max
LSB max
mV max
μV typ
μV/°C max
μV/°C typ
μV/V typ
mV max
mV max
mV typ
μV/°C typ
μV/V typ
Filter output truncated to 16 bits
−40°C to +85°C; ±2 LSB typical; fMCLK = 20 MHz maximum⁴
>85°C to 105°C
fMCLK = 20 MHz maximum⁴; VIN+ = −250 mV to +250 mV
Guaranteed no missed codes to 16 bits;
fMCLK = 20 MHz maximum⁴; VIN+ = −250 mV to +250 mV
fMCLK = 20 MHz maximum⁴; VIN+ = −250 mV to +250 mV
TA = 25°C
−40°C to +105°C
−40°C to +85°C
>85°C to 105°C
fMCLK = 20 MHz maximum⁴; VIN+ = −250 mV to +250 mV
−40°C to +105°C
mV min/mV max
μA max
μA max
pF typ
dB min
dB min
dB min
dB min
dB typ
dB min
dB min
dB typ
dB typ
Bits
kV/μs min
kV/μs typ
For specified performance; full range ±320 mV
VIN+ = 400 mV, VIN− = 0 V
VIN+ = 5 kHz, 400 mV p-p sine
−40°C to +85°C; fMCLK = 9 MHz to 20 MHz⁴
−40°C to +85°C; fMCLK = 5 MHz to <9 MHz
>85°C to 105°C
fMCLK = 20 MHz maximum⁴; VIN+ = −250 mV to +250 mV
−40°C to +105°C; 82 dB typ
fMCLK = 20 MHz maximum⁴; VIN+ = −250 mV to +250 mV
fMCLK = 20 MHz maximum⁴; VIN+ = −250 mV to +250 mV
V min
V max
μA max
pF max
Rev. D | Page 3 of 20