Datasheet

www.ti.com
ELECTRICAL CHARACTERISTICS
ADS6145, ADS6144
ADS6143, ADS6142
SLWS198B – JULY 2007 – REVISED MARCH 2008
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
DYNAMIC AC CHARACTERISTICS
F
in
= 10 MHz 73.9 74.3 74.6 74.7
F
in
= 50 MHz 70 73.7 73.7 71 74.2 74.4
F
in
= 70 MHz 73.3 70 73.9 74.1 71 74.4
SNR 0 dB Gain 71.1 71.8 72.3 72.7
Signal-to-noise dBFS
F
in
= 170 MHz
3.5 dB Coarse
ratio, CMOS
70.1 70.9 71.4 71.8
gain
0 dB Gain 69.8 70.7 71.3 71.7
F
in
= 230 MHz
3.5 dB Coarse
69 69.9 70.4 70.9
gain
F
in
= 10 MHz 74.5 74.4 74.9 75
F
in
= 50 MHz 70.5 74.4 73.9 71.5 74.4 74.6
F
in
= 70 MHz 74.1 70.5 74.1 74.3 71.5 74.6
SNR 0 dB Gain 72.3 72.3 72.8 72.9
Signal-to-noise dBFS
F
in
= 170 MHz
3.5 dB Coarse
ratio, LVDS
71.5 71.5 71.9 72.1
gain
0 dB Gain 71.2 71.2 71.8 72
F
in
= 230 MHz
3.5 dB Coarse
70.5 70.5 71.1 71.2
gain
RMS output
Inputs tied to common-mode 1.05 1.05 1.05 1.05 LSB
noise
F
in
= 10 MHz 73.7 74.1 74.5 74.6
F
in
= 50 MHz 69 72.3 73 70 74.1 74.1
F
in
= 70 MHz 72.6 69 73.2 73.3 70 74.0
SINAD
Signal-to-noise 0 dB Gain 68.7 71 71.1 72.2
and distortion dBFS
F
in
= 170 MHz
3.5 dB Coarse
ratio
68.6 70.5 70.6 71.5
gain
CMOS
0 dB Gain 67.3 69 70.2 70.6
F
in
= 230 MHz
3.5 dB Coarse
67 69 69.9 70.4
gain
F
in
= 10 MHz 74.3 74.3 74.8 74.9
F
in
= 50 MHz 69.5 72.7 72.9 70.5 74.3 74.4
F
in
= 70 MHz 73.4 69.5 73.5 73.6 70.5 74.4
SINAD
Signal-to-noise 0 dB Gain 70.6 71.4 72 72.4
and distortion dBFS
F
in
= 170 MHz
3.5 dB Coarse
ratio
70.8 71.1 71.6 71.9
gain
LVDS
0 dB Gain 69.4 69.2 71 70.5
F
in
= 230 MHz
3.5 dB Coarse
69.4 69.4 70.7 70.5
gain
ENOB F
in
= 50 MHz 11.1 11.7 11.3 12
Effective Bits
F
in
= 70 MHz 11.1 11.8 11.3 12
number of bits
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
SFDR 0 dB Gain 76 80 81 82
Spurious free dBc
F
in
= 170 MHz
3.5 dB Coarse
dynamic range
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
6 Submit Documentation Feedback Copyright © 2007 – 2008, Texas Instruments Incorporated
Product Folder Link(s): ADS6145, ADS6144 ADS6143, ADS6142