Datasheet

AC SPECIFICATIONS
Parameter AD9243 Units
SIGNAL-TO-NOISE AND DISTORTION RATIO (S/N+D)
f
INPUT
= 500 kHz 75.0 dB min
79.0 dB typ
f
INPUT
= 1.5 MHz 77.0 dB typ
EFFECTIVE NUMBER OF BITS (ENOB)
f
INPUT
= 500 kHz 12.3 Bits min
12.8 Bits typ
f
INPUT
= 1.5 MHz 12.5 Bits typ
SIGNAL-TO-NOISE RATIO (SNR)
f
INPUT
= 500 kHz 76.0 dB min
80.0 dB typ
f
INPUT
= 1.5 MHz 79.0 dB typ
TOTAL HARMONIC DISTORTION (THD)
f
INPUT
= 500 kHz –78.0 dB max
–87.0 dB typ
f
INPUT
= 1.5 MHz –82.0 dB typ
SPURIOUS FREE DYNAMIC RANGE
f
INPUT
= 500 kHz 91.0 dB typ
f
INPUT
= 1.5 MHz 84.0 dB typ
DYNAMIC PERFORMANCE
Full Power Bandwidth 40 MHz typ
Small Signal Bandwidth 40 MHz typ
Aperture Delay 1 ns typ
Aperture Jitter 4 ps rms typ
Acquisition to Full-Scale Step (0.0025%) 80 ns typ
Overvoltage Recovery Time 167 ns typ
Specifications subject to change without notice.
DIGITAL SPECIFICATIONS
Parameters Symbol AD9243 Units
LOGIC INPUTS
High Level Input Voltage V
IH
+3.5 V min
Low Level Input Voltage V
IL
+1.0 V max
High Level Input Current (V
IN
= DVDD) I
IH
±10 µA max
Low Level Input Current (V
IN
= 0 V) I
IL
±10 µA max
Input Capacitance C
IN
5 pF typ
LOGIC OUTPUTS (with DRVDD = 5 V)
High Level Output Voltage (I
OH
= 50 µA) V
OH
+4.5 V min
High Level Output Voltage (I
OH
= 0.5 mA) V
OH
+2.4 V min
Low Level Output Voltage (I
OL
= 1.6 mA) V
OL
+0.4 V max
Low Level Output Voltage (I
OL
= 50 µA) V
OL
+0.1 V max
Output Capacitance C
OUT
5 pF typ
LOGIC OUTPUTS (with DRVDD = 3 V)
High Level Output Voltage (I
OH
= 50 µA) V
OH
+2.4 V min
Low Level Output Voltage (I
OL
= 50 µA) V
OL
+0.7 V max
Specifications subject to change without notice.
AD9243
REV. A
–3–
(AVDD = +5 V, DVDD= +5 V, DRVDD = +5 V, f
SAMPLE
= 3 MSPS, VREF = 2.5 V, A
IN
= –0.5 dBFS, AC Coupled/
Differential Input, T
MIN
to T
MAX
unless otherwise noted)
(AVDD = +5 V, DVDD = +5 V, T
MIN
to T
MAX
unless otherwise noted)