AD7476A/AD7477A/AD7478A
Rev. F | Page 5 of 28
AD7477A SPECIFICATIONS
VDD = 2.35 V to 5.25 V, fSCLK = 20 MHz, fSAMPLE = 1 MSPS, TA = TMIN to TMAX, unless otherwise noted.1 Table 2.
Parameter
Unit
Test Conditions/Comments
DYNAMIC PERFORMANCE
fIN = 100 kHz sine wave
Signal-to-Noise + Distortion (SINAD
)361
dB min
Total Harmonic Distortion (TH
D)3–72
dB max
Peak Harmonic or Spurious Noise (SFD
R)3–73
dB max
Intermodulation Distortion (IMD
)3Second-Order Terms
–82
dB typ
fa = 100.73 kHz, fb = 90.7 kHz
Third-Order Terms
–82
dB typ
fa = 100.73 kHz, fb = 90.7 kHz
Aperture Delay
10
ns typ
Aperture Jitter
30
ps typ
Full Power Bandwidth
13.5
MHz typ
@ 3 dB
2
MHz typ
@ 0.1 dB
DC ACCURACY
Resolution
10
Bits
Integral Nonlinearity
±0.5
LSB max
Differential Nonlinearity
±0.5
LSB max
Guaranteed no missed codes to 10 bits
±1
LSB max
±1
LSB max
Total Unadjusted Error (TU
E)3, 4±1.2
LSB max
ANALOG INPUT
Input Voltage Range
0 to VDD
V
DC Leakage Current
±0.5
A max
Input Capacitance
20
pF typ
Track-and-hold in track; 6 pF typ when in hold
LOGIC INPUTS
Input High Voltage, VINH
2.4
V min
1.8
V min
VDD = 2.35 V
Input Low Voltage, VINL
0.8
V max
VDD = 5 V
0.4
V max
VDD = 3 V
Input Current, IIN, SCLK Pin
±0.5
μA max
Typically 10 nA, VIN = 0 V or VDD
Input Current, IIN, CS Pin
±10
nA typ
5
pF max
LOGIC OUTPUTS
Output High Voltage VOH
VDD – 0.2
V min
ISOURCE = 200 μA, VDD = 2.35 V to 5.25 V
Output Low Voltage, VOL
0.4
V max
ISINK = 200 μA
Floating-State Leakage Current
±1
μA max
Floating-State Output Capacitance5
5
pF max
Output Coding
Straight (Natural) Binary
CONVERSION RATE
Conversion Time
700
ns max
14 SCLK cycles with SCLK at 20 MHz
Track-and-Hold Acquisition T
ime3250
ns max
Throughput Rate
1
MSPS max