ADS58B18_11 Datasheet, PDF (39/68 Pages) Texas Instruments – 11-Bit, 200MSPS/9-Bit, 250MSPS, Ultralow-Power ADCs with Analog Buffer

ADS58B18
ADS58B19
www.ti.com
SBAS487D – NOVEMBER 2009 – REVISED JANUARY 2011
TYPICAL CHARACTERISTICS: ADS58B19 (continued)
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.
SFDR ACROSS INPUT FREQUENCY
SNR ACROSS INPUT FREQUENCY
80
57
75
56.5
70
56
65
55.5
60
55
55
54.5
50
0 50 100 150 200 250 300 350 400 450 500
Input Frequency (MHz)
Figure 41.
SFDR ACROSS GAIN
84
80
76
72
68
64
60
150MHz
56
170MHz
220MHz
52
300MHz
400MHz
500MHz
48
0
0.5
1
1.5
2
2.5
3
3.5
Gain (dB)
Figure 43.
54
0 50 100 150 200 250 300 350 400 450 500
Input Frequency (MHz)
Figure 42.
SINAD ACROSS GAIN
58
40MHz
150MHz
170MHz
57
220MHz
300MHz
400MHz
500MHz
56
55
54
53
0
0.5
1
1.5
2
2.5
3
3.5
Gain (dB)
Figure 44.
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