Datasheet

−80
−70
−60
−50
−40
−30
−20
−10
0
0 10 20 30 40 50 60 70 80 90 100
Frequency of Signal on Supply (MHz)
PSRR (dB)
PSRR on AVDD Supply 50mV
PP
PSRR on AVDD 3V Supply 100mV
PP
f
IN
f =10MHz
IN
PSRR PP
f =1MHz,50mV
Amplitude(f )= 1dBFS
Amplitude(f )= 64.5
Amplitude(f +f )= 67.4
Amplitude(f f )= 68.5
IN
PSRR
IN P
IN P
-
-
-
- -
f
PSRR
f f-
IN PSRR
f +f
IN PSRR
0
-120
-100
-80
-60
-40
-20
Amplitude(dB)
0 504540353025201510
5
Frequency(MHz)
−60
−50
−40
−30
−20
−10
0
0 50 100 150 200 250 300
Frequency of Input Common-Mode Signal (MHz)
CMRR (dB)
Input Frequency = 170MHz
50mV
PP
Signal Superimposed
on Input Common-Mode Voltage (1.7V)
0
-110
-100
-80
-60
-40
-20
Amplitude(dB)
0 1009080706050403020
10
Frequency(MHz)
-10
-30
-50
-70
-90
f (10MHz)
IN
f =170MHz
IN
CM PP
f =10MHz,50mV
SFDR=79.36
Amplitude(f )= 1dBFS
Amplitude(f )= 99.7
Amplitude(f +f )= 78.1
Amplitude(f f )= 80.8
IN
CM
IN CM
IN CM
-
-
-
- -
f
CM
(10MHz)
f f-
IN CM
(160MHz)
f +f
IN CM
(180MHz)
ADS58B18
ADS58B19
www.ti.com SBAS487D – NOVEMBER 2009–REVISED JANUARY 2011
TYPICAL CHARACTERISTICS: GENERAL
At +25°C, AVDD = 1.8V, AVDD_BUF = 3.3V, DRVDD = 1.8V, maximum rated sampling frequency, sine wave input clock,
1.5V
PP
differential clock amplitude, 50% clock duty cycle, –1dBFS differential analog input, DDR LVDS output interface, and
32k-point FFT, unless otherwise noted.
PSRR ACROSS FREQUENCY ZOOMED VIEW OF SPECTRUM WITH PSRR SIGNAL
Figure 54. Figure 55.
CMRR ACROSS FREQUENCY SPECTRUM WITH CMRR SIGNAL
Figure 56. Figure 57.
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