Datasheet

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ELECTRICAL CHARACTERISTICS
ADS6424
ADS6423
ADS6422
SLAS532A – MAY 2007 – REVISED JUNE 2007
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
DYNAMIC AC CHARACTERISTICS
Fin = 10 MHz 71.2 71.4 71.4
Fin = 50 MHz 70.8 68 71.1 68 71.2
Fin = 70 MHz 67.5 70.6 70.9 71
Fin = 100 MHz 70.1 70.5 70.5
0 dB gain 68.8 69 69.1
SNR
dBFS
3.5 dB 68.4 68.4 68.8
Fin = 170 MHz
Signal to noise ratio
Coarse
gain
0 dB gain 67.8 66.9 68.1
3.5 dB 67.3 67.3 67.8
Fin = 230 MHz
Coarse
gain
Fin = 10 MHz 71.1 71.3 71.3
Fin = 50 MHz 69.8 67.5 70.9 67.5 71
Fin = 70 MHz 67 70 70.6 70.7
Fin = 100 MHz 70 70.1 70
0 dB gain 68.5 68.6 68.9
SINAD
Signal to noise and dBFS
3.5 dB 68.1 68.2 68.7
Fin = 170 MHz
distortion ratio
Coarse
gain
0 dB gain 66.8 66.5 67.3
3.5 dB 66.8 67.2 67.4
Fin = 230 MHz
Coarse
gain
RMS Output noise Inputs tied to common-mode 0.407 0.407 0.407 LSB
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
SFDR
Spurious free dBc
3.5 dB 81 82 83
Fin = 170 MHz
dynamic range
Coarse
gain
0 dB gain 76 77 78
3.5 dB 79 80 81
Fin = 230 MHz
Coarse
gain
Copyright © 2007, Texas Instruments Incorporated 7
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