Datasheet

–2–
REV. C
AD7813–SPECIFICATIONS
1
(GND = 0 V, V
REF
= V
DD
= 3 V  10% to 5 V  10%. All specifications –40C to
+105C unless otherwise noted.)
Parameter Y Version Unit Test Conditions/Comments
DYNAMIC PERFORMANCE f
IN
= 30 kHz, f
SAMPLE
= 350 kHz
Signal to (Noise + Distortion) Ratio
1
58 dB min
Total Harmonic Distortion (THD)
1
–66 dB max
Peak Harmonic or Spurious Noise
1
–66 dB max
Intermodulation Distortion
2
fa = 29.1 kHz, fb = 29.8 kHz
2nd Order Terms –67 dB typ
3rd Order Terms –67 dB typ
DC ACCURACY
Resolution 10 Bits
Minimum Resolution for Which
No Missing Codes Are Guaranteed 10 Bits
Relative Accuracy
1
± 1 LSB max
Differential Nonlinearity (DNL)
1
± 1 LSB max
Gain Error
1
± 2 LSB max
Offset Error
1
± 2.0 LSB max
ANALOG INPUT
Input Voltage Range 0 V min
V
REF
V max
Input Leakage Current
2
± 1 µA max
Input Capacitance
2
20 pF max
REFERENCE INPUTS
2
V
REF
Input Voltage Range 1.2 V min
V
DD
V max
Input Leakage Current ± 3 µA max
Input Capacitance 15 pF max
LOGIC INPUTS
2
V
INH,
Input High Voltage 2.0 V min
V
INL,
Input Low Voltage 0.4 V max (0.8 V max, V
DD
= 5 V)
Input Current, I
IN
± 1 µA max Typically 10 nA, V
IN
= 0 V to V
DD
Input Capacitance, C
IN
8 pF max
LOGIC OUTPUTS
Output High Voltage, V
OH
2.4 V min I
SOURCE
= 200 µA
Output Low Voltage, V
OL
0.4 V max I
SINK
= 200 µA
High Impedance Leakage Current ± 1 µA max
High Impedance Capacitance 15 pF max
CONVERSION RATE
Conversion Time 2.3 µs max
Track/Hold Acquisition Time
1
100 ns max
POWER SUPPLY
V
DD
2.7–5.5 Volts For Specified Performance
I
DD
Digital Inputs = 0 V or V
DD
Normal Operation 3.5 mA max
Power-Down 1 µA max V
DD
= 5 V
Power Dissipation
Normal Operation 17.5 mW max V
DD
= 5 V
Power-Down 5 µW max
Auto Power-Down V
DD
= 3 V
1 kSPS Throughput 34.6 µW max
10 kSPS Throughput 346.5 µW max
100 kSPS Throughput 3.46 mW max
NOTES
1
See Terminology section.
2
Sample tested during initial release and after any redesign or process change that may affect this parameter.
Specifications subject to change without notice.