LTC1863L Datasheet, PDF (1/16 Pages) Linear Technology – Micropower, 3V, 12-/16-Bit, 8-Channel 175ksps ADCs

FEATURES
■ _{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}^TM _{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}
U
APPLICATIO S
■ _{Industrial Process Control}
■ _{High Speed Data Acquisition}
■ _{Battery Operated Systems}
■ _{Multiplexed Data Acquisition Systems}
■ _{Imaging Systems}
LTC1863L/LTC1867L
Micropower, 3V,
12-/16-Bit, 8-Channel
175ksps ADCs
DESCRIPTIO
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.
, LTC and LT are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
BLOCK DIAGRA
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
1863L7Lf
1