Datasheet

AD9244
Rev. C | Page 5 of 36
Test AD9244BST-65 AD9244BST-40
Parameter Temp Level Min Typ Max Min Typ Max Unit
WORST HARMONIC (SECOND or THIRD)
1
f
IN
= 2.4 MHz 25°C V −94.5 −93.7 dBc
f
IN
= 20 MHz 25°C V −92.8 dBc
f
IN
= 32.5 MHz 25°C V −86.5 dBc
f
IN
= 70 MHz 25°C V −86.1 dBc
f
IN
= 100 MHz 25°C V −86.2 −84.5 dBc
f
IN
= 200 MHz 25°C V −60.7 −56.6 dBc
SFDR
1
f
IN
= 2.4 MHz Full VI 78.6 82.5 dBc
25°C I 94.5 93.7 dBc
f
IN
= 15.5 MHz (–1 dBFS) Full IV 83 dBc
25°C V 90 dBc
f
IN
= 20 MHz Full IV 81.4 dBc
25°C I 91.8 dBc
f
IN
= 32.5 MHz Full IV 80.0 dBc
25°C I 86.4 dBc
f
IN
= 70 MHz Full IV 79.5 dBc
25°C V 86.1 dBc
f
IN
= 100 MHz 25°C V 86.2 84.5 dBc
f
IN
= 200 MHz 25°C V 60.7 56.6 dBc
1
AC specifications can be reported in dBc (degrades as signal levels are lowered) or in dBFS (always related back to converter full scale).
DIGITAL SPECIFICATIONS
AVDD = 5 V, DRVDD = 3 V, VREF = 2 V, external reference, unless otherwise noted.
Table 3.
Test AD9244BST-65 AD9244BST-40
Parameter Temp Level Min Typ Max Min Typ Max Unit
DIGITAL INPUTS
Logic 1 Voltage (OEB, DRVDD = 3 V) Full IV 2 2 V
Logic 1 Voltage (OEB, DRVDD = 5 V) Full IV 3.5 3.5 V
Logic 0 Voltage (OEB) Full IV 0.8 0.8 V
Logic 1 Voltage (DFS, DCS) Full IV 3.5 3.5 V
Logic 0 Voltage (DFS, DCS) Full IV 0.8 0.8 V
Input Current Full IV 10 10 µA
Input Capacitance Full V 5 5 pF
CLOCK INPUT PARAMETERS
Differential Input Voltage Full IV 0.4 0.4 V p-p
CLK− Voltage
1
Full IV 0.25 0.25 V
Internal Clock Common-Mode Full V 1.6 1.6 V
Single-Ended Input Voltage
Logic 1 Voltage Full IV 2 2 V
Logic 0 Voltage Full IV 0.8 0.8 V
Input Capacitance Full V 5 5 pF
Input Resistance Full V 100 100 kΩ
DIGITAL OUTPUTS (DRVDD = 5 V)
Logic 1 Voltage (I
OH
= 50 µA) Full IV 4.5 4.5 V
Logic 0 Voltage (I
OL
= 50 µA) Full IV 0.1 0.1 V
Logic 1 Voltage (I
OH
= 0.5 mA) Full IV 2.4 2.4 V
Logic 0 Voltage (I
OL
= 1.6 mA) Full IV 0.4 0.4 V