ADS6122 Datasheet, PDF (7/67 Pages) Texas Instruments – 12-BITS, 125/105/80/65 MSPS ADC WITH DDR LVDS/CMOS OUTPUTS

www.ti.com
ADS6125, ADS6124
ADS6123, ADS6122
SLAS560A – OCTOBER 2007 – REVISED MARCH 2008
ELECTRICAL CHARACTERISTICS (continued)
Typical values are at 25°C, min and max values are across the full temperature range T_MIN = –40°C to T_MAX = 85°C, AVDD =
DRVDD = 3.3 V, maximum rated sampling frequency, 50% clock duty cycle, –1 dBFS differential analog input, internal
reference mode, applies to CMOS and LVDS interfaces, unless otherwise noted.
PARAMETER
TEST CONDITIONS
Fin = 10 MHz
Fin = 50 MHz
Fin = 70 MHz
THD
Total harmonic
distortion
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
HD2
Second
harmonic
distortion
Fin = 70 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 = 170}
distortion
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
Worst spur
(Other than
HD2, HD3)
Fin = 70 MHz
Fin = 170
MHz
Fin = 230
MHz
IMD
2-Tone
intermodulation
distortion
F1 = 185 MHz, F2 = 190 MHz
Each tone at -7 dBFS
Input overload
recovery
Recovery to within 1% (of final
value) for 6-dB overload with sine
wave input
PSRR
AC Power
supply rejection
ratio
For 100 mVpp signal on AVDD
supply
ADS6125
F_S = 125 MSPS
MIN TYP MAX
88.5
73 79.5
82
73.5
75
71.5
72.5
96
76
95
91
81
82
75
76
90
76
80
84
76
78
75
76
93
92
91
90
ADS6124
F_S = 105 MSPS
MIN TYP MAX
90
82.5
73 83
79
81
75.5
77.5
96
96
76 92
83
84
79
81
91
83
76 84
80
82
77
79
94
90
90
89
ADS6123
F_S = 80 MSPS
MIN TYP MAX
91.5
76
88
83
78
79
76
78
97
79
96
93
83
84
80
81
93
79
89
84
81
83
79
81
96
93
92
89
ADS6122
F_S = 65 MSPS
MIN TYP MAX
93
88
76 85
80
82
UNIT
dBc
76
78.5
98
96
79 93
86
dBc
87
79
81
95
89
79 86
82
dBc
84
79
82
97
96
95
dBc
91
90
88
89
90
83
82
84
88
dBFS
1
1
1
1
clock
cycles
35
35
35
35
dBc
Copyright © 2007–2008, Texas Instruments Incorporated
Submit Documentation Feedback
7
Product Folder Link(s): ADS6125, ADS6124 ADS6123, ADS6122