LTC1863 Datasheet, PDF (1/16 Pages) Linear Technology – 12-/16-Bit, 8-Channel 200ksps ADCs

LTC1863/LTC1867
12-/16-Bit, 8-Channel
200ksps ADCs
FEATURES
s _{Sample Rate: 200ksps}
s _{16-Bit No Missing Codes and ±2LSB Max INL}
s _{8-Channel Multiplexer with:}
Single Ended or Differential Inputs and
Unipolar or Bipolar Conversion Modes
s _{SPI/MICROWIRE}^TM _{Serial I/O}
s _{Signal-to-Noise Ratio: 89dB}
s _{Single 5V Operation}
s _{On-Chip or External Reference}
s _{Low Power: 1.3mA at 200ksps, 0.76mA at 100ksps}
s _{Sleep Mode}
s _{Automatic Nap Mode Between Conversions}
s _{16-Pin Narrow SSUOP Package}
APPLICATIO S
s _{Industrial Process Control}
s _{High Speed Data Acquisition}
s _{Battery Operated Systems}
s _{Multiplexed Data Acquisition Systems}
s _{Imaging Systems}
DESCRIPTIO
The LTC^®1863/LTC1867 are pin-compatible, 8-channel
12-/16-bit A/D converters with serial I/O, and an internal
reference. The ADCs typically draw only 1.3mA from a
single 5V supply.
The 8-channel input multiplexer can be configured for
either single-ended or differential inputs and unipolar
or bipolar conversions (or combinations thereof). The
automatic nap and sleep modes benefit power sensitive
applications.
The LTC1867’s DC performance is outstanding with a
±2LSB INL specification and no missing codes over tem-
perature. The signal-to-noise ratio (SNR) for the LTC1867
is typically 89dB, with the internal reference.
Housed in a compact, narrow 16-pin SSOP package, the
LTC1863/LTC1867 can be used in space-sensitive as well
as low-power applications.
, LTC and LT are registered trademarks of Linear Technology Corporation.
MICROWIRE is a trademark of National Semiconductor Corp.
BLOCK DIAGRA
CH0
CH1
CH2
CH3
CH4
CH5
CH6
CH7/COM
1
2
3
4
5
6
7
8
ANALOG
INPUT
MUX
LTC1863/LTC1867
16
15
V_DD
GND
14 _SDI
+ ^12-/16-BIT SERIAL ¹³ SDO
–
200ksps
ADC
PORT
12 _SCK
11 _CS/CONV
INTERNAL
10 _VREF
2.5V REF
9
REFCOMP
18637 BD
Integral Nonlinearity vs Output Code
(LTC1867)
2.0
1.5
1.0
0.5
0
– 0.5
– 1.0
– 1.5
– 2.0
0
16384 32768 49152
OUTPUT CODE
65536
18637 GO1
18637f
1