Data Sheet AD7475/AD7495
Rev. C | Page 5 of 24
AD7495 SPECIFICATIONS
V
DD
= 2.7 V to 5.25 V, V
DRIVE
= 2.7 V to 5.25 V, f
SCLK
= 20 MHz, T
A
= T
MIN
to T
MAX,
unless otherwise noted.
Table 2.
Parameter A Version
1
B Version
1
Unit Test Conditions/Comments
DYNAMIC PERFORMANCE
Signal-to-Noise and Distortion (SINAD) 68 68 dB min f
IN
= 300 kHz sine wave, f
SAMPLE
= 1 MSPS
Total Harmonic Distortion (THD) −75 −75 dB max f
IN
= 300 kHz sine wave, f
SAMPLE
= 1 MSPS
Peak Harmonic or Spurious Noise
(SFDR)
−76 −76 dB max f
IN
= 300 kHz sine wave, f
SAMPLE
= 1 MSPS
Intermodulation Distortion (IMD)
Second-Order Terms −78 −78 dB typ
Third-Order Terms −78 −78 dB typ
Aperture Delay 10 10 ns typ
Aperture Jitter 50 50 ps typ
Full Power Bandwidth 8.3 8.3 MHz typ @ 3 dB
Full Power Bandwidth 1.3 1.3 MHz typ @ 0.1 dB
DC ACCURACY
Resolution 12 12 Bits
Integral Nonlinearity ±1.5 ±1 LSB max @ 5 V (typ @ 3 V)
±0.5 ±0.5 LSB typ @ 25°C
Differential Nonlinearity +1.5/−0.9 +1.5/−0.9 LSB max @ 5 V guaranteed no missed codes to
12 bits (typ @ 3 V)
±0.6 ±0.6 LSB typ @ 25°C
Offset Error ±8 ±8 LSB max Typically ±2.5 LSB
ANALOG INPUT
DC Leakage Current ±1 ±1 µA max
Input Capacitance 20 20 pF typ
REFERENCE OUTPUT
REF OUT Output Voltage 2.4625/2.5375 2.4625/2.5375 V min/max
REF OUT Impedance 10 10 Ω typ
REF OUT Temperature Coefficient 50 50 ppm/°C typ
LOGIC INPUTS
Input High Voltage, V
INH
V
DRIVE
− 1 V
DRIVE
− 1 V min
Input Low Voltage, V
INL
0.4 0.4 V max
Input Current, I
IN
±1 ±1 µA max Typically 10 nA, V
IN
= 0 V or V
DRIVE
IN
2
LOGIC OUTPUTS
Output High Voltage, V
OH
V
DRIVE
− 0.2 V min I
SOURCE
= 200 µA; V
DD
= 2.7 V to 5.25 V
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
2
10 10 pF max
Output Coding Straight (Natural) Binary
Conversion Time 800 800 ns max 16 SCLK cycles with SCLK @ 20 MHz
Track-and-Hold Acquisition Time 300 300 ns max Sine wave input
325 325 ns max Full-scale step input
Throughput Rate 1 1 MSPS max See the Serial Interface section
