Datasheet
www.ti.com
ADS6245 , ADS6244
ADS6243 , ADS6242
SLAS542A – MAY 2007 – REVISED JULY 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).
ADS6245 ADS6244 ADS6243 ADS6242
F
s
= 125 MSPS F
s
= 105 MSPS F
s
= 80 MSPS F
s
= 65 MSPS
PARAMETER UNIT
MIN TYP MAX MIN TYP MAX MIN TYP MAX MIN TYP MAX
VCM output current ± 4 ± 4 ± 4 ± 4 mA
capability
DC ACCURACY
No missing codes Assured Assured Assured Assured
E
O
Offset error, across devices – 15 ± 2 15 – 15 ± 2 15 – 15 ± 2 15 – 15 ± 2 15 mV
and across channels within
a device
Offset error temperature 0.05 0.05 0.05 0.05 mV/ ° C
coefficient, across devices
and across channels within
a device
There are two sources of gain error - internal reference inaccuracy and channel gain error
E
GREF
Gain error due to internal – 0.75 ± 0.1 0.75 – 0.75 ± 0.1 0.75 – 0.75 ± 0.1 0.75 – 0.75 ± 0.1 0.75 % FS
reference inaccuracy alone,
( Δ V
REF
/2.0) %
Reference gain error 0.0125 0.0125 0.0125 0.0125 Δ %/ ° C
temperature coefficient
E
GCHAN
Gain error of channel alone, – 1 ± 0.3 1 – 1 ± 0.3 1 – 1 ± 0.3 1 – 1 ± 0.3 1 % FS
across devices and across
channels within a device
(1)
Channel gain error 0.005 0.005 0.005 0.005 Δ %/ ° C
temperature coefficient,
across devices and across
channels within a device
DNL Differential nonlinearity – 0.95 ± 0.6 2.5 – 0.9 ± 0.6 2.5 – 0.9 ± 0.5 2.0 – 0.9 ± 0.5 2.5 LSB
INL Integral nonlinearity -5 ± 3 5 -5 ± 3 5 -4.5 ± 2 4.5 -4.5 ± 2 4.5 LSB
PSRR DC power supply rejection 0.5 0.5 0.5 0.5 mV/V
ratio
POWER SUPPLY
I
CC
Total supply current 300 245 210 190 mA
I
AVDD
Analog supply current 237 185 155 140 mA
I
LVDD
LVDS supply current 63 60 55 50 mA
Total power 1.0 1.2 0.81 0.97 0.7 0.85 0.63 0.8 W
Power down (with input 77 150 77 150 77 150 77 150 mW
clock stopped)
(1) This is specified by design and characterization; it is not tested in production.
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