LTC2173-14 Linear Technology Corporation, LTC2173-14 Datasheet - Page 17

• Manufacturer Part Number: LTC2173-14
• Description: (LTC217x-14) 125Msps Low Power Quad ADCs
• Manufacturer: Linear Technology Corporation

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PIN FUNCTIONS
V
with a 1μF ceramic capacitor, nominally 1.25V.
SENSE (Pin 50): Reference Programming Pin. Connecting
SENSE to V
range. Connecting SENSE to ground selects the internal
reference and a ±0.5V input range. An external reference
between 0.625V and 1.3V applied to SENSE selects an
input range of ±0.8 • V
Exposed Pad (Pin 53): Ground. The Exposed Pad must
be soldered to the PCB ground.
LVDS Outputs
All pins in this section are differential LVDS outputs.
The output current level is programmable. There is an
optional internal 100Ω termination resistor between
the pins of each LVDS output pair.
OUT4B
Serial data outputs for Channel 4. In 1-lane output mode
only OUT4A
REF
(Pin 48): Reference Voltage Output. Bypass to ground
–
/OUT4B
DD
–
/OUT4A
selects the internal reference and a ±1V input
+
, OUT4A
+
are used.
SENSE
–
/OUT4A
.
+
(Pins 23/24, 25/26):
OUT3B
Serial data outputs for Channel 3. In 1-lane output mode
only OUT3A
FR
DCO
OUT2B
Serial data outputs for Channel 2. In 1-lane output mode
only OUT2A
OUT1B
Serial data outputs for Channel 1. In 1-lane output mode
only OUT1A
–
/FR
–
/DCO
–
–
–
LTC2174-14/LTC2173-14
+
/OUT1B
/OUT3B
/OUT2B
(Pins 31/32): Frame Start Outputs.
+
–
–
–
(Pins 35/36): Data Clock Outputs.
/OUT1A
/OUT3A
/OUT2A
+
+
+
, OUT1A
, OUT3A
, OUT2A
+
+
+
are used.
are used.
are used.
–
–
–
/OUT1A
/OUT3A
/OUT2A
LTC2175-14/
+
+
+
(Pins 41/42, 43/44):
(Pins 27/28, 29/30):
(Pins 37/38, 39/40):
17
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