ADS58B19IRGZT Datasheet, PDF (41/69 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.
PERFORMANCE ACROSS INPUT COMMON-MODE
VOLTAGE
PERFORMANCE ACROSS INPUT CLOCK AMPLITUDE
80
58
80
58
SFDR
SFDR
78
SNR
57.5
SNR
78
57
76
57
74
56.5
76
56
72
56
70
55.5
74
55
68
55
72
54
66
54.5
64
62
60
1.55
54
53.5
Input Frequency = 170MHz
53
1.60
1.65
1.70
1.75
1.80
1.85
Input Common-Mode Voltage (V)
Figure 49.
70
53
Input Frequency = 170MHz
68
52
0
0.5
1
1.5
2
2.5
3
3.5
Differential Clock Amplitude (V_PP)
Figure 50.
PERFORMANCE ACROSS INPUT CLOCK DUTY CYCLE
90
57
THD
SNR
ANALOG POWER vs SAMPLING FREQUENCY
280
Includes AVDD and AVDD_BUF Power
260
85
56.5
240
220
80
56
200
180
75
55.5
70
35
Input Frequency = 10MHz
55
40
45
50
55
60
65
Input Clock Duty Cycle (%)
Figure 51.
160
140
120
100
0
20 40 60 80 100 120 140 160 180 200
Sampling Speed (MSPS)
Figure 52.
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