LTC2272CUJ LINER [Linear Technology], LTC2272CUJ Datasheet - Page 16
![no-image](/images/no-image-200.jpg)
LTC2272CUJ
Manufacturer Part Number
LTC2272CUJ
Description
16-Bit, 80Msps/65Msps Serial Output ADC
Manufacturer
LINER [Linear Technology]
Datasheet
1.LTC2272CUJ.pdf
(44 pages)
- Current page: 16 of 44
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FAM (Pin 31): Frame Alignment Monitor Enable. A high
level enables the substitution of predetermined data at the
end of the frame with a K28.7 symbol for frame alignment
monitoring.
PAT0 (Pin 32): Pattern Select Bit0. Use with PAT1 to select
a test pattern for the serial interface.
PAT1 (Pin 33): Pattern Select Bit1. Use with PAT0 to select
a test pattern for the serial interface.
SCRAM (Pin 34): Enable Data Scrambling. A high level on
this pin will apply the polynomial 1 + x
bling each ADC data sample. The scrambling takes place
before the 8B/10B encoding.
PGA (Pin 35): Programmable Gain Amplifi er Control
Pin. Low selects a front-end gain of 1, input range of
2.25V
of 1.5V
LTC2273/LTC2272
PIN FUNCTIONS
16
P-P
P-P
. High selects a front-end gain of 1.5, input range
.
14
+ x
15
in scram-
MSBINV (Pin 36): Invert the MSB. A high level will invert
the MSB to enable the 2’s compliment format.
SENSE (Pin 38): Reference Mode Select and External
Reference Input. Tie SENSE to V
2.5V bandgap reference. An external reference of 2.5V or
1.25V may be used; both reference values will set a full
scale ADC range of 2.25V (PGA = 0).
V
common mode. Must be bypassed to ground with a
minimum of 2.2μF . Ceramic chip capacitors are recom-
mended.
GND (Exposed Pad) (Pin 41): ADC Power Ground. The
Exposed Pad on the bottom of the package needs to be
soldered to ground.
CM
(Pin 39): 1.25V Output. Optimum voltage for input
DD
to select the internal
22732f
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