Datasheet

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ADS6424
ADS6423
ADS6422
SLAS532A – MAY 2007 – REVISED JUNE 2007
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 =
LVDD = 3.3 V, maximum rated sampling frequency, 50% clock duty cycle, – 1dBFS differential analog input, internal reference
mode (unless otherwise noted).
ADS6424 ADS6423 ADS6422
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
Fin = 10 MHz 94 96 97
Fin = 50 MHz 88 76 90 76 92
Fin = 70 MHz 73 88 90 92
Fin = 100 MHz 90 87 87
0 dB gain 84 86 86
HD2
dBc
3.5 dB 86 88 88
Fin = 170 MHz
Second harmonic
Coarse
gain
0 dB gain 81 82 83
3.5 dB 83 84 85
Fin = 230 MHz
Coarse
gain
Fin = 10 MHz 91 91 93
Fin = 50 MHz 80 76 87 76 88
Fin = 70 MHz 73 81 86 86
Fin = 100 MHz 85 85 83
0 dB gain 78 79 80
HD3
dBc
3.5 dB 82 82 83
Fin = 170 MHz
Third harmonic
Coarse
gain
0 dB gain 76 77 78
3.5 dB 79 80 81
Fin = 230 MHz
Coarse
gain
Fin = 10 MHz 95 96 98
Fin = 50 MHz 94 95 95
Worst harmonic
Fin = 70 MHz 94 95 95
(other than HD2, dBc
Fin = 100 MHz 92 93 93
HD3)
Fin = 170 MHz 89 90 90
Fin = 230 MHz 86 87 87
Fin = 10 MHz 89.5 89.5 91
Fin = 50 MHz 78.5 74 85.5 74 86
THD
Fin = 70 MHz 70
Total harmonic dBc
Fin = 100 MHz 84 83 80.5
distortion
Fin = 170 MHz 76 77.5 78.5
Fin = 230 MHz 74 75.5 76.5
ENOB Fin = 50 MHz 10.9 11.5 10.9 11.5
Effective number of Bits
10.8 11.4
Fin = 70 MHz
bits
F1= 46.09 MHz, F2 = 50.09 90 94 97.5
IMD
MHz
2-Tone
dBFS
intermodulation
F1= 185.09 MHz, F2 = 88 92 96
distortion
190.09 MHz
8 Copyright © 2007, Texas Instruments Incorporated
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