Datasheet

AD7492
Rev. A | Page 3 of 24
SPECIFICATIONS
AD7492-5
V
DD
= 4.75 V to 5.25 V, T
A
= T
MIN
to T
MAX
, unless otherwise noted.
Table 1.
Parameter A Version
1
B Version
1
Unit Test Conditions/Comments
DYNAMIC PERFORMANCE f
S
= 1.25 MSPS
Signal-to-Noise and Distortion (SINAD) 69 69 dB typ f
IN
= 500 kHz sine wave
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
68 68 dB min f
IN
= 100 kHz sine wave
Total Harmonic Distortion (THD) −83 −83 dB typ f
IN
= 500 kHz sine wave
−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)
−83 −83 dB typ f
IN
= 500 kHz sine wave
−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 −82 −82 dB typ f
IN
= 500 kHz sine wave
−90 −90 dB typ f
IN
= 100 kHz sine wave
Third Order Terms −71 −71 dB typ f
IN
= 500 kHz sine wave
−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
DC ACCURACY f
S
= 1.25 MSPS
Resolution 12 12 Bits
Integral Nonlinearity ±1.5 ±1.25 LSB max
Differential Nonlinearity +1.5/–0.9 +1.5/−0.9 LSB max
Guaranteed no missed codes to
12 bits (A and B versions)
Offset Error ±9 ±9 LSB max
Gain Error ±2.5 ±2.5 LSB max
ANALOG INPUT
Input Voltage Ranges 0 to 2.5 0 to 2.5 V
DC Leakage Current ±1 ±1 μA max
Input Capacitance 33 33 pF typ
REFERENCE OUTPUT
REF OUT Output Voltage Range 2.5 2.5 V ±1.5% for specified performance
LOGIC INPUTS
Input High Voltage, V
INH
2
V
DRIVE
× 0.7 V
DRIVE
× 0.7 V min V
DD
= 5 V ± 5%
Input Low Voltage, V
INL
2
V
DRIVE
× 0.3 V
DRIVE
× 0.3 V max V
DD
= 5 V ± 5%
Input Current, I
IN
±1 ±1 μA max Typically 10 nA, V
IN
= 0 V or V
DD
Input Capacitance, C
IN
3
10 10 pF max
LOGIC OUTPUTS
Output High Voltage, V
OH
V
DRIVE
− 0.2 V
DRIVE
− 0.2 V min I
SOURCE
= 200 μA
Output Low Voltage, V
OL
0.4 0.4 V max I
SINK
= 200 μA
Floating-State Leakage Current ±10 ±10 μA max
Floating-State Output Capacitance 10 10 pF max
Output Coding
Straight (natural)
binary
Straight (natural)
binary