Datasheet

AD7492
Rev. A | Page 4 of 24
Parameter A Version
1
B Version
1
Unit Test Conditions/Comments
CONVERSION RATE
Conversion Time 680 680 ns max
Track/Hold Acquisition Time 120 120 ns min
Throughput Rate 1.25 1.25 MSPS max
Conversion time + acquisition
time
POWER REQUIREMENTS
V
DD
4.75/5.25 4.75/5.25 V min/max
I
DD
Digital I/Ps = 0 V or DV
DD
Normal Mode 3.3 3.3 mA max f
S
= 1.25 MSPS, typ 2.75 mA
Quiescent Current 1.8 1.8 mA max
Partial Sleep Mode 250 250 μA max Static, typ 190 μA
Full Sleep Mode 1 1 μA max Static, typ 200 nA
Power Dissipation
4
Digital I/Ps = 0 V or DV
DD
Normal Mode 16.5 16.5 mW max
Partial Sleep Mode 1.25 1.25 mW max
Full Sleep Mode 5 5 μW max
1
Temperature ranges as follows: A and B Versions: −40°C to +85°C.
2
V
INH
and V
INL
trigger levels are set by the V
DRIVE
voltage. The logic interface circuitry is powered by V
DRIVE
.
3
Sample tested @ 25°C to ensure compliance.
4
See the Power vs. Throughput section.
AD7492/AD7492-4
V
DD
= 2.7 V to 5.25 V, T
A
= T
MIN
to T
MAX
, unless otherwise noted.
1
Table 2.
Parameter A Version
2
B Version
2
Unit Test Conditions/Comments
DYNAMIC PERFORMANCE f
S
= 1 MSPS for AD7492
f
S
= 400 kSPS for AD7492-4
Signal-to-Noise and Distortion (SINAD) 69 69 dB typ f
IN
= 500 kHz sine wave
3
68 68 dB min f
IN
= 100 kHz sine wave
Signal-to-Noise Ratio (SNR) 70 70 dB typ f
IN
= 500 kHz sine wave
3
68 68 dB min f
IN
= 100 kHz sine wave
Total Harmonic Distortion (THD) −85 −85 dB typ f
IN
= 500 kHz sine wave
3
−87 −87 dB typ f
IN
= 100 kHz sine wave
−75 −75 dB max f
IN
= 100 kHz sine wave
Peak Harmonic or Spurious-Free
Dynamic Noise (SFDR)
−86 −86 dB typ f
IN
= 500 kHz sine wave
3
−90 −90 dB typ f
IN
= 100 kHz sine wave
−76 −76 dB max f
IN
= 100 kHz sine wave
Intermodulation Distortion (IMD)
Second Order Terms −77 −77 dB typ f
IN
= 500 kHz sine wave
3
−90 −90 dB typ f
IN
= 100 kHz sine wave
Third Order Terms −69 −69 dB typ f
IN
= 500 kHz sine wave
3
−88 −88 dB typ f
IN
= 100 kHz sine wave
Aperture Delay 5 5 ns typ
Aperture Jitter 15 15 ps typ
Full Power Bandwidth 10 10 MHz typ