Datasheet

AD9042
Rev. B | Page 4 of 24
SWITCHING SPECIFICATIONS
AV
CC
= DV
CC
= 5 V; ENCODE and
ENCODE
= 41 MSPS; V
REF
tied to V
OFFSET
through 50 Ω; T
MIN
= −40°C, T
MAX
= +85°C.
Table 2.
Parameter
1
Temperature Test Level Min Typ Max Unit
Maximum Conversion Rate Full VI 41 MSPS
Minimum Conversion Rate Full IV 5 MSPS
Aperture Delay (t
A
) 25°C V −250 ps
Aperture Uncertainty (Jitter) 25°C V 0.7 ps rms
ENCODE Pulse Width High 25°C IV 10 ns
ENCODE Pulse Width Low 25°C IV 10 ns
Output Delay (t
OD
) Full IV 5 9 14 ns
1
C1 (Pin 10) tied to GND through a 0.01 μF capacitor.
AC SPECIFICATIONS
AV
CC
= DV
CC
= 5 V; ENCODE and
ENCODE
= 41 MSPS; V
REF
tied to V
OFFSET
through 50 Ω; T
MIN
= −40°C, T
MAX
= +85°C.
Table 3.
Parameter
1, 2
Temp Test Level Min Typ Max Units
SNR
3
Analog Input at −1 dBFS
1.2 MHz 25°C V 68 dB
Full V 67.5 dB
9.6 MHz 25°C V 67.5 dB
Full V 67 dB
19.5 MHz 25°C I 64 67 dB
Full V 66.5 dB
SINAD
4
Analog Input at −1 dBFS
1.2 MHz 25°C V 67.5 dB
Full V 67 dB
9.6 MHz 25°C V 67.5 dB
Full V 67 dB
19.5 MHz 25°C I 64 67 dB
Full V 66.5 dB
WORST SPUR
5
Analog Input at −1 dBFS
1.2 MHz 25°C V 80 dBc
Full V 78 dBc
9.6 MHz 25°C V 80 dBc
Full V 78 dBc
19.5 MHz 25°C I 73 80 dBc
Full V 78 dBc
SMALL SIGNAL SFDR (WITH DITHER)
6
Analog Input
1.2 MHz Full V 90 dBFS
9.6 MHz Full V 90 dBFS
19.5 MHz Full V 90 dBFS
TWO-TONE IMD REJECTION
7
F1, F2 @ –7 dBFS Full V 80 dBc
TWO-TONE SFDR (WITH DITHER)
8
Full V 90 dBFS
THERMAL NOISE 25°C V 0.33 LSB rms