Datasheet

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ADS6145, ADS6144
ADS6143, ADS6142
SLWS198B – JULY 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.
ADS6145 ADS6144 ADS6143 ADS6142
F
S
= 125 MSPS F
S
= 105 MSPS F
S
= 80 MSPS F
S
= 65 MSPS
PARAMETER TEST CONDITIONS UNIT
MIN TYP MAX MIN TYP MAX MIN TYP MAX MIN TYP MAX
F
in
= 10 MHz 88.5 90 91.5 93
F
in
= 50 MHz 73 79.5 82.5 76 88 88
F
in
= 70 MHz 82 75 83 83 76 85
THD 0 dB Gain 73.5 79 78 80
Total harmonic dBc
F
in
= 170 MHz
3.5 dB Coarse
distortion
75 81 79 82
gain
0 dB Gain 71.5 75.5 76 76
F
in
= 230 MHz
3.5 dB Coarse
72.5 77.5 78 78.5
gain
F
in
= 10 MHz 96 96 97 98
F
in
= 50 MHz 76 95 96 79 96 96
F
in
= 70 MHz 91 78 92 93 79 93
HD2
0 dB Gain 81 83 83 86
Second
dBc
F
in
= 170 MHz
harmonic
3.5 dB Coarse
82 84 84 87
distortion
gain
0 dB Gain 75 79 80 79
F
in
= 230 MHz
3.5 dB Coarse
76 81 81 81
gain
F
in
= 10 MHz 90 91 93 95
F
in
= 50 MHz 76 80 83 79 89 89
F
in
= 70 MHz 84 78 84 84 79 86
HD3 0 dB Gain 76 80 81 82
Third harmonic dBc
F
in
= 170 MHz
3.5 dB Coarse
distortion
78 82 83 84
gain
0 dB Gain 75 77 79 79
F
in
= 230 MHz
3.5 dB Coarse
76 79 81 82
gain
F
in
= 10 MHz 93 94 96 97
F
in
= 50 MHz 92 90 93 96
Worst spur
(other than F
in
= 70 MHz 91 90 92 95 dBc
HD2, HD3)
F
in
= 170 MHz 90 89 89 91
F
in
= 230 MHz 90 88 89 90
IMD
2-Tone F1 = 185 MHz, F2 = 190 MHz,
83 82 84 88 dBFS
intermodulation Each tone at -7 dBFS
distortion
Recovery to within 1% (of final
Input overload clock
value) for 6-dB overload with sine 1 1 1 1
recovery cycles
wave input
PSRR
AC Power For 100 mVpp signal on AVDD
35 35 35 35 dBc
supply rejection supply
ratio
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