Datasheet

AD7476A/AD7477A/AD7478A
Rev. F | Page 5 of 28
AD7477A SPECIFICATIONS
V
DD
= 2.35 V to 5.25 V, f
SCLK
= 20 MHz, f
SAMPLE
= 1 MSPS, T
A
= T
MIN
to T
MAX
, unless otherwise noted.
1
Table 2.
Parameter A Grade
2
Unit Test Conditions/Comments
DYNAMIC PERFORMANCE f
IN
= 100 kHz sine wave
Signal-to-Noise + Distortion (SINAD)
3
61 dB min
Total Harmonic Distortion (THD)
3
–72 dB max
Peak Harmonic or Spurious Noise (SFDR)
3
–73 dB max
Intermodulation Distortion (IMD)
3
Second-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
Offset Error
3, 4
±1 LSB max
Gain Error
3, 4
±1 LSB max
Total Unadjusted Error (TUE)
3, 4
±1.2 LSB max
ANALOG INPUT
Input Voltage Range 0 to V
DD
V
DC Leakage Current ±0.5 µA max
Input Capacitance 20 pF typ Track-and-hold in track; 6 pF typ when in hold
LOGIC INPUTS
Input High Voltage, V
INH
2.4 V min
1.8 V min V
DD
= 2.35 V
Input Low Voltage, V
INL
0.8 V max V
DD
= 5 V
0.4 V max V
DD
= 3 V
Input Current, I
IN
, SCLK Pin ±0.5 μA max Typically 10 nA, V
IN
= 0 V or V
DD
Input Current, I
IN
,
CS
Pin
±10 nA typ
Input Capacitance, C
IN
5
5 pF max
LOGIC OUTPUTS
Output High Voltage V
OH
V
DD
– 0.2 V min I
SOURCE
= 200 μA, V
DD
= 2.35 V to 5.25 V
Output Low Voltage, V
OL
0.4 V max I
SINK
= 200 μA
Floating-State Leakage Current ±1 μA max
Floating-State Output Capacitance
5
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 Time
3
250 ns max
Throughput Rate 1 MSPS max