AD7475/AD7495
Rev. B | Page 3 of 24
AD7475 SPECIFICATIONS
VDD = 2.7 V to 5.25 V, VDRIVE = 2.7 V to 5.25 V, REF IN = 2.5 V, fSCLK = 20 MHz, TA = TMIN to TMAX, unless otherwise noted.
Table 1.
Parameter
Unit
Test Conditions/Comments
DYNAMIC PERFORMANCE
Signal-to-Noise and Distortion
Ratio (SINAD)
68
dB min
fIN = 300 kHz sine wave, fSAMPLE = 1 MSPS
Total Harmonic Distortion (THD)
75
dB max
fIN = 300 kHz sine wave, fSAMPLE = 1 MSPS
Peak Harmonic or Spurious Noise
(SFDR)
76
dB max
fIN = 300 kHz sine wave, fSAMPLE = 1 MSPS
Intermodulation Distortion (IMD)
Second-Order Terms
78
dB typ
Third-Order Terms
78
dB typ
Aperture Delay
10
ns typ
Aperture Jitter
50
ps typ
Full Power Bandwidth
8.3
MHz typ
@ 3 dB
Full Power Bandwidth
1.3
MHz typ
@ 0.1 dB
DC ACCURACY
Resolution
12
Bits
Integral Nonlinearity
±1.5
±1
LSB max
@ 5 V (typ @ 3 V)
±0.5
LSB typ
@ 25°C
Differential Nonlinearity
+1.5/0.9
LSB max
@ 5 V guaranteed no missed codes to
12 bits (typ @ 3 V)
±0.5
LSB typ
@ 25°C
Offset Error
±8
LSB max
Typically ±2.5 LSB
Gain Error
±3
LSB max
ANALOG INPUT
Input Voltage Ranges
0 to REF IN
V
DC Leakage Current
±1
μA max
Input Capacitance
20
pF typ
REFERENCE INPUT
REF IN Input Voltage Range
2.5
V
±1% for specified performance
DC Leakage Current
±1
μA max
Input Capacitance
20
pF typ
LOGIC INPUTS
Input High Voltage, VINH
V 1
V min
Input Low Voltage, VINL
0.4
V max
Input Current, IIN
±1
μA max
Typically 10 nA, VIN = 0 V or VDRIVE
10
pF max
LOGIC OUTPUTS
Output High Voltage, VOH
VDRIVE 0.2
V min
ISOURCE = 200 μA; VDRIVE = 2.7 V to 5.25 V
Output Low Voltage, VOL
0.4
V max
ISINK = 200 μA
Floating-State Leakage Current
±10
μA max
Floating-State Output Capacitance
10
pF max
Output Coding
Straight (Natural) Binary
CONVERSION RATE
Conversion Time
800
ns max
16 SCLK cycles with SCLK at 20 MHz
Track-and-Hold Acquisition Time
300
ns max
Sine wave input
325
ns max
Full-scale step input
Throughput Rate
1
MSPS max