LTC1863L_15 Datasheet, PDF (1/16 Pages) Linear Technology – Micropower, 3V, 12-/16-Bit, 8-Channel 175ksps ADCs

FEATURES
nn _{Sample Rate: 175ksps}
nn _{16-Bit No Missing Codes and ±3LSB Max INL}
nn _{8-Channel Multiplexer with:}
nn _{Single Ended or Differential Inputs and}
nn _{Unipolar or Bipolar Conversion Modes}
nn _{SPI/MICROWIRE Serial I/O}
nn _{2.7V Guaranteed Supply Voltage}
nn _{Pin Compatible with LTC1863/LTC1867}
nn _{True Differential Inputs}
nn _{On-Chip or External Reference}
nn _{Low Power: 750µA at 175ksps, 300µA at 50ksps}
nn _{Sleep Mode}
nn _{Automatic Nap Mode Between Conversions}
nn _{16-Pin Narrow SSOP Package}
APPLICATIONS
nn _{Industrial Process Control}
nn _{High Speed Data Acquisition}
nn _{Battery Operated Systems}
nn _{Multiplexed Data Acquisition Systems}
nn _{Imaging Systems}
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.
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. All other trademarks are the property of their respective owners.
BLOCK DIAGRAM
CH0 ¹
CH1 ²
CH2 ³
CH3 ⁴
CH4 ⁵
CH5 ⁶
CH6 ⁷
CH7/COM ⁸
ANALOG
INPUT
MUX
LTC1863L/LTC1867L
16 _VDD
15 _GND
+ 12-/16-BIT
–
175ksps
ADC
SERIAL
PORT
14 _SDI
13 _SDO
12 _SCK
11 _CS/CONV
10 _VREF
INTERNAL
1.25V REF
9
REFCOMP
1863L7L BD
Integral Nonlinearity vs Output Code
(LTC1867L)
2.0
V_DD = 2.7V
1.5 ^{fSAMPLE = 175ksps}
1.0
0.5
0
–0.5
–1.0
–1.5
–2.0
0
16384 32768 49152
OUTPUT CODE
65536
1863L7L G01
For more information www.linear.com/LTC1863L
1863l7lfd
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