FEATURES
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LTC1863L/LTC1867L
Micropower, 3V,
12-/16-Bit, 8-Channel
175ksps ADCs
DESCRIPTION
The LTC
®
1863L/LTC1867L are pin compatible, 8-channel
12-/16-bit A/D converters with serial I/O and an internal
reference.
The 8-channel input multiplexer can be configured for
either single-ended or differential inputs and unipolar or
bipolar conversions (or combinations thereof). The ADCs
convert 0V to 2.5V unipolar inputs or ±1.25V bipolar
inputs. The ADCs typically draw only 750μA from a single
2.7V supply. The automatic nap and sleep modes benefit
power sensitive applications.
The LTC1867L’s DC performance is outstanding with a
±3LSB INL specification and 16-bit no missing codes
over temperature.
Housed in a compact, narrow 16-pin SSOP package, the
LTC1863L/LTC1867L can be used in space-sensitive as
well as low power applications.
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
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Sample Rate: 175ksps
16-Bit No Missing Codes and ±3LSB Max INL
8-Channel Multiplexer with:
Single Ended or Differential Inputs and
Unipolar or Bipolar Conversion Modes
SPI™/MICROWIRE™ Serial I/O
2.7V Guaranteed Supply Voltage
Pin Compatible with LTC1863/LTC1867
True Differential Inputs
On-Chip or External Reference
Low Power: 750μA at 175ksps, 300μA at 50ksps
Sleep Mode
Automatic Nap Mode Between Conversions
16-Pin Narrow SSOP Package
APPLICATIONS
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Industrial Process Control
High Speed Data Acquisition
Battery Operated Systems
Multiplexed Data Acquisition Systems
Imaging Systems
BLOCK DIAGRAM
Integral Nonlinearity vs Output Code
(LTC1867L)
CH0
CH1
CH2
CH3
CH4
CH5
CH6
CH7/COM
1
2
3
4
5
6
7
8
INTERNAL
1.25V REF
ANALOG
INPUT
MUX
LTC1863L/LTC1867L
16
15
14
V
DD
GND
SDI
SDO
SCK
CS/CONV
V
REF
INL (LSB)
2.0
1.5
1.0
0.5
0
–0.5
–1.0
–1.5
V
DD
= 2.7V
f
SAMPLE
= 175ksps
+
–
12-/16-BIT
175ksps
ADC
SERIAL
PORT
13
12
11
10
9
1863L7L BD
REFCOMP
–2.0
0
16384
32768
OUTPUT CODE
49152
65536
1863L7L G01
1863l7lfc
1
LINEAR_DIMENSIONS [ LINEAR DIMENSIONS SEMICONDUCTOR ]
