AD7401A
Rev. C | Page 3 of 20
SPECIFICATIONS
V
DD1
= 4.5 V to 5.5 V, V
DD2
= 3 V to 5.5 V, V
IN
+ = −200 mV to +200 mV, and V
IN
− = 0 V (single-ended); T
A
= −40°C to +125°C, f
MCLKIN
=
16 MHz maximum,
1
tested with sinc3 filter, 256 decimation rate, as defined by Verilog code, unless otherwise noted.
Table 1.
Y Version
1, 2
Parameter
Min Typ Max
Unit Test Conditions/Comments
STATIC PERFORMANCE
Resolution
16 Bits Filter output truncated to 16 bits
Integral Nonlinearity (INL)
3
±1.5 ±7 LSB
V
IN
+ = ±200 mV, T
A
= −40°C to +85°C, f
MCLKIN
= 20 MHz max
1
±2 ±13 LSB
V
IN
+ = ±250 mV, T
A
= −40°C to +85°C, f
MCLKIN
= 20 MHz max
1
±1.5 ±11 LSB
V
IN
+ = ±200 mV, T
A
= −40°C to +125°C, f
MCLKIN
= 20 MHz max
1
±2 ±46 LSB
V
IN
+ = ±250 mV, T
A
= −40°C to +125°C, f
MCLKIN
= 20 MHz max
1
Differential Nonlinearity (DNL)
3
±0.9 LSB Guaranteed no missed codes to 16 bits,
f
MCLKIN
= 20 MHz max,
1
V
IN
+ = −250 mV to +250 mV
Offset Error
3
±.025 ±0.5 mV
f
MCLKIN
= 20 MHz max,
1
V
IN
+ = −250 mV to +250 mV
Offset Drift vs. Temperature
3
1 3.5 μV/°C
Offset Drift vs. V
DD1
3
120 μV/V
Gain Error
3
0.07 ±1.5 mV
±1 mV
f
MCLKIN
= 20 MHz max,
1
V
IN
+ = −250 mV to +250 mV
Gain Error Drift vs. Temperature
3
23 μV/°C
Gain Error Drift vs. V
DD1
3
110 μV/V
ANALOG INPUT
Input Voltage Range
±200 ±250 mV For specified performance; full range ±320 mV
Dynamic Input Current ±13 ±18 μA
V
IN
+ = 500 mV, V
IN
− = 0 V, f
MCLKIN
= 20 MHz max
1
±10 ±15 μA
V
IN
+ = 400 mV, V
IN
− = 0 V, f
MCLKIN
= 20 MHz max
1
0.08 μA
V
IN
+ = 0 V, V
IN
− = 0 V, f
MCLKIN
= 20 MHz max
1
DC Leakage Current ±0.01 ±0.6 μA
Input Capacitance 10 pF
DYNAMIC SPECIFICATIONS V
IN
+ = 5 kHz
Signal-to-(Noise + Distortion) Ratio (SINAD)
3
76 82 dB V
IN
+ = ±200 mV, T
A
= −40°C to +85°C,
f
MCLKIN
= 5 MHz to 20 MHz
1
71 82 dB V
IN
+ = ±250 mV, T
A
= −40°C to +85°C,
f
MCLKIN
= 5 MHz to 20 MHz
1
72 82 dB V
IN
+ = ±200 mV, T
A
= −40°C to +125°C,
f
MCLKIN
= 5 MHz to 20 MHz
1
82 dB V
IN
+ = ±250 mV, T
A
= −40°C to +125°C,
f
MCLKIN
= 5 MHz to 20 MHz
1
Signal-to-Noise Ratio (SNR)
3
81 83 dB V
IN
+ = ±250 mV, T
A
= −40°C to +125°C,
f
MCLKIN
= 5 MHz to 20 MHz
1
80 82 dB V
IN
+ = ±200 mV, T
A
= −40°C to +125°C,
f
MCLKIN
= 5 MHz to 20 MHz
1
Total Harmonic Distortion (THD)
3
−90 dB
f
MCLKIN
= 20 MHz max
1
, V
IN
+ = −250 mV to +250 mV
Peak Harmonic or Spurious Noise (SFDR)
3
−92 dB
Effective Number of Bits (ENOB)
3
12.3 13.3 Bits
Isolation Transient Immunity
3
25 30 kV/μs
LOGIC INPUTS
Input High Voltage, V
IH
0.8 × V
DD2
V
Input Low Voltage, V
IL
0.2 × V
DD2
V
Input Current, I
IN
±0.5 μA
Floating State Leakage Current 1 μA
Input Capacitance, C
IN
4
10 pF
