ADS6445-EP Datasheet, PDF (6/71 Pages) Texas Instruments – QUAD CHANNEL, 14 BIT, 125 MSPS ADC WITH SERIAL LVDS OUTPUTS

ADS6445-EP
SLAS573 – FEBRUARY 2008 ............................................................................................................................................................................................ www.ti.com
ELECTRICAL CHARACTERISTICS
Typical values are at 25°C, min and max values are across the full junction temperature range T_J,MIN = –55°C to T_J,MAX =
125°C, AVDD = LVDD = 3.3 V, maximum rated sampling frequency, 50% clock duty cycle, –1 dBFS differential analog input,
internal reference mode (unless otherwise noted).
PARAMETER
TEST CONDITIONS
DYNAMIC AC CHARACTERISTICS
Fin = 10 MHz
Fin = 50 MHz
Fin = 70 MHz
SNR
Signal to noise ratio
Fin = 100 MHz
Fin = 170 MHz
0 dB gain
3.5 dB Coarse gain
Fin = 230 MHz
0 dB gain
3.5 dB Coarse gain
Fin = 10 MHz
Fin = 50 MHz
SINAD
Signal to noise and
distortion ratio
Fin = 70 MHz
Fin = 100 MHz
Fin = 170 MHz
0 dB gain
3.5 dB Coarse gain
Fin = 230 MHz
0 dB gain
3.5 dB Coarse gain
RMS
Output noise
Inputs tied to common-mode
Fin = 10 MHz
Fin = 50 MHz
SFDR
Spurious free dynamic
range
Fin = 70 MHz
Fin = 100 MHz
Fin = 170 MHz
0 dB gain
3.5 dB Coarse gain
Fin = 230 MHz
0 dB gain
3.5 dB Coarse gain
Fin = 10 MHz
Fin = 50 MHz
Fin = 70 MHz
HD2
Second harmonic
Fin = 100 MHz
Fin = 170 MHz
0 dB gain
3.5 dB Coarse gain
Fin = 230 MHz
0 dB gain
3.5 dB Coarse gain
Fin = 10 MHz
Fin = 50 MHz
Fin = 70 MHz
HD3
Third harmonic
Fin = 100 MHz
Fin = 170 MHz
0 dB gain
3.5 dB Coarse gain
Fin = 230 MHz
0 dB gain
3.5 dB Coarse gain
ADS6445
F_s = 125 MSPS
MIN
TYP
73.7
68.5
73.1
72.7
72.1
69.9
69.4
68.7
68.1
73.4
67.75
72.3
71.2
71.8
67.9
68.3
67.8
67.9
1.05
87
69
81
78
86
76
79
77
80
93
69
87
87
89
83
85
80
82
87
69
81
78
86
76
79
77
80
MAX
UNIT
dBFS
dBFS
LSB
dBc
dBc
dBc
6
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