LTC2393CLX-16 LINER [Linear Technology], LTC2393CLX-16 Datasheet - Page 9

• Manufacturer Part Number: LTC2393CLX-16
• Description: 16-Bit, 1Msps SAR ADC With 94dB SNR
• Manufacturer: LINER [Linear Technology]

PIN FUNCTIONS
BUSY (Pin 29): Busy Output. A low-to-high transition oc-
curs when a conversion is started. It stays high until the
conversion is complete. The falling edge of BUSY can be
used as the data-ready clock signal.
RD (Pin 30): Read Data Input. When CS and RD are both
low, the parallel and serial output bus is enabled.
CS (Pin 31): Chip Select. When CS and RD are both low,
the parallel and serial output bus is enabled. CS is also
used to gate the external shift clock.
RESET (Pin 32): Reset Input. When high the LTC2393-16
is reset, and if this occurs during a conversion, the conver-
sion is halted and the data bus is put into Hi-Z mode.
PD (Pin 33): Power-Down Input. When high, the
LTC2393-16 is powered down and subsequent conversion
requests are ignored. Before entering power shutdown,
the digital output data should be read.
CNVST (Pin 34): Conversion Start Input. A falling edge
on CNVST puts the internal sample-and-hold into the hold
mode and starts a conversion. CNVST is independent of
CS.
VCM (Pin 36): Common Mode Analog Output. Typically
the output voltage is 2.048V. Bypass to GND with a 10μF
capacitor.
REFOUT (Pin 37): Internal Reference Output. Nominal
output voltage is 4.096V. Connect this pin to REFIN if us-
ing the internal reference. If an external reference is used
connect REFOUT to ground.
REFIN (Pin 38): Reference Input. An external reference
can be applied to REFIN if a more accurate reference is
required. If an external reference is used tie REFOUT to
ground.
REFSENSE (Pin 39): Reference Input Sense. Leave
REFSENSE open when using the internal reference. If
an external reference is used connect REFSENSE to the
ground pin of the external reference.
IN
IN
Exposed Pad (Pin 49, QFN Package): Ground. This must
be soldered directly to the ground plane.
–
+
, IN
– (IN
+
–
(Pin 42, Pin 43): Differential Analog Inputs.
) can range up to ±V
REF
LTC2393-16
.
239316p
9