ADS5474 Datasheet, PDF (13/38 Pages) Texas Instruments – 14-Bit, 400-MSPS Analog-to-Digital Converter

ADS5474
www.ti.com
SLAS525 – JULY 2007
TYPICAL CHARACTERISTICS (continued)
At T_A = +25°C, sampling rate = 400 MSPS, 50% clock duty cycle, 3-V_PP differential sinusoidal clock, analog input amplitude =
–1 dBFS, AVDD5 = 5 V, AVDD3 = 3.3 V, and DVDD3 = 3.3 V, unless otherwise noted.
NORMALIZED GAIN RESPONSE
vs
INPUT FREQUENCY
3
0
-3
-6
-9
-12
-15
-18
f_S = 400 MSPS
A_IN = ±0.38 V_PP
-21
10 M
100 M
1G
5G
Frequency - Hz
Figure 14.
INTEGRAL NONLINEARITY
2.0
f_S = 400 MSPS
f_IN = 70 MHz
1.5
1.0
DIFFERENTIAL NONLINEARITY
0.5
f_S = 400 MSPS
0.4
f_IN = 70 MHz
0.3
0.2
0.1
0
-0.1
-0.2
-0.3
-0.4
-0.5
0
2048 4096 6144 8192 10240 12288 14336 16384
Code
Figure 15.
NOISE HISTOGRAM WITH INPUTS SHORTED
25
f_S = 400 MSPS
f_IN = VCM
20
0.5
15
0
10
-0.5
-1.0
5
-1.5
-2.0
0
0 2048 4096 6144 8192 10240 12288 14336 16384
Code
Figure 16.
Output Code
Figure 17.
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