Datasheet

AD7910/AD7920
Rev. C | Page 3 of 24
SPECIFICATIONS
AD7910
V
DD
= 2.35 V to 5.25 V, f
SCLK
= 5 MHz, f
SAMPLE
= 250 kSPS, T
A
= T
MIN
to T
MAX
, unless otherwise noted.
Table 1.
Parameter
1
A Grade
1, 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 Ranges 0 to V
DD
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, V
INH
2.4 V min
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 A 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 A, V
DD
= 2.35 V to 5.25 V
Output Low Voltage, V
OL
0.4 V max I
SINK
= 200 A
Floating-State Leakage Current ±1 A max
Floating-State Output Capacitance
5
5 pF max
Output Coding Straight (natural) binary
CONVERSION RATE
Conversion Time 2.8 s max 14 SCLK cycles with SCLK at 5 MHz
Track-and-Hold Acquisition Time
3
250 ns max
Throughput Rate 250 kSPS max
POWER REQUIREMENTS
V
DD
2.35/5.25 V min/max
I
DD
Digital I/Ps = 0 V or V
DD
Normal Mode (Static) 2.5 mA typ V
DD
= 4.75 V to 5.25 V, SCLK on or off
1.2 mA typ V
DD
= 2.35 V to 3.6 V, SCLK on or off
Normal Mode (Operational) 3 mA max V
DD
= 4.75 V to 5.25 V, f
SAMPLE
= 250 kSPS
1.4 mA max V
DD
= 2.35 V to 3.6 V, f
SAMPLE
= 250 kSPS
Full Power-Down Mode 1 A max Typically 50 nA