Datasheet

94
89
84
79
74
69
ExternalReferenceCommon-ModeVoltage,(REF +REF )/2(V)
T B
1.35 1.65
DynamicPerformance(SNR,SFDR)
1.501.451.40
SNR(dBFS)
SFDR(dBc)
f =65MHz
f =10MHz
S
IN
1.55 1.60
Externalreferencedifferentialvoltagemaintainedat2V.
94
89
84
79
74
69
VoltageonV (V)
CM
1.35 1.65
DynamicPerformance(SNR,SFDR)
1.501.451.40
SNR(dBFS)
SFDR(dBc)
f =65MHz
f =10MHz
S
IN
1.55 1.60
94
89
84
79
74
69
AnalogInputCommon-ModeVoltage(V)
1.30 1.70
DynamicPerformance(SNR,SFDR)
1.401.35
SNR(dBFS)
SFDR(dBc)
f =65MHz
f =10MHz
S
IN
1.45 1.651.601.551.50
94
89
84
79
74
69
ExternalReferenceDifferentialVoltage,REF REF (V)-
T B
1.6 2.4
DynamicPerformance(SNR,SFDR)
1.91.81.7
SNR(dBFS)
SFDR(dBc)
f =65MHz
f =10MHz
S
IN
2.0 2.32.22.1
Externalreferencecommon-modevoltage
maintainedat1.5V.
ADS5281
ADS5282
www.ti.com SBAS397I –DECEMBER 2006–REVISED JUNE 2012
TYPICAL CHARACTERISTICS (continued)
At T
A
= +25°C, AVDD = +3.3V, LVDD = 1.8V, clock frequency = 65MSPS, differential clock mode, 1V
PP
clock amplitude, 50%
clock duty cycle, input frequency = 10MHz, –1dBFS differential analog input, 0dB digital gain setting, 1.5V analog input
common-mode, low-frequency noise suppression = off, internal reference mode, I
SET
resistor = 56.2kΩ, and LVDS buffer
current setting = 3.5mA, unless otherwise noted.
DYNAMIC PERFORMANCE vs ANALOG INPUT COMMON- DYNAMIC PERFORMANCE vs EXTERNAL REFERENCE
MODE VOLTAGE DIFFERENTIAL VOLTAGE
Figure 18. Figure 19.
DYNAMIC PERFORMANCE vs EXTERNAL REFERENCE DYNAMIC PERFORMANCE vs EXTERNAL REFERENCE
COMMON-MODE VOLTAGE FORCED THROUGH V
CM
Figure 20. Figure 21.
Copyright © 2006–2012, Texas Instruments Incorporated 29