LTC1867_15 Datasheet, PDF (1/18 Pages) Linear Technology – 12-/16-Bit, 8-Channel 200ksps ADCs

LTC1863/LTC1867
12-/16-Bit, 8-Channel
200ksps ADCs
FEATURES
nn _{Sample Rate: 200ksps}
nn _{16-Bit No Missing Codes and ±2LSB 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 _{Signal-to-Noise Ratio: 89dB}
nn _{Single 5V Operation}
nn _{On-Chip or External Reference}
nn _{Low Power: 1.3mA at 200ksps, 0.76mA at 100ksps}
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}
DESCRIPTION
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.
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
CH1
CH2
CH3
CH4
CH5
CH6
CH7/COM
1
2
3
4
5
6
7
8
ANALOG
INPUT
MUX
LTC1863/LTC1867
+ ^12-/16-BIT
–
200ksps
ADC
SERIAL
PORT
INTERNAL
2.5V REF
16
15
14
V_DD
GND
SDI
13 _SDO
12 _SCK
11 _CS/CONV
10 _VREF
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
For more information www.linear.com/LTC1863
18637fc
1