12-/16-BIT 175ksps ADC LTC1863L/LTC1867L Micropower, 3V, 12-/16-Bit, 8-Channel 175ksps ADCs FEATURES DESCRIPTION n Sample Rate: 175ksps The LTC 1863L/LTC1867L are pin compatible, 8-channel n 16-Bit No Missing Codes and 3LSB Max INL 12-/16-bit A/D converters with serial I/O and an internal n 8-Channel Multiplexer with: reference. n Single Ended or Differential Inputs and The 8-channel input multiplexer can be configured for n Unipolar or Bipolar Conversion Modes either single-ended or differential inputs and unipolar or n SPI/MICROWIRE Serial I/O bipolar conversions (or combinations thereof). The ADCs n 2.7V Guaranteed Supply Voltage convert 0V to 2.5V unipolar inputs or 1.25V bipolar n Pin Compatible with LTC1863/LTC1867 inputs. The ADCs typically draw only 750A from a single n True Differential Inputs 2.7V supply. The automatic nap and sleep modes benefit n On-Chip or External Reference power sensitive applications. n Low Power: 750A at 175ksps, 300A at 50ksps n The LTC1867Ls DC performance is outstanding with a Sleep Mode n 3LSB INL specification and 16-bit no missing codes over Automatic Nap Mode Between Conversions n temperature. 16-Pin Narrow SSOP Package Housed in a compact, narrow 16-pin SSOP package, the APPLICATIONS LTC1863L/LTC1867L can be used in space-sensitive as well as low power applications. n Industrial Process Control All registered trademarks and trademarks are the property of their respective owners. n High Speed Data Acquisition n Battery Operated Systems n Multiplexed Data Acquisition Systems n Imaging Systems BLOCK DIAGRAM Integral Nonlinearity vs Output Code (LTC1867L) LTC1863L/LTC1867L 1 CH0 16 2.0 V DD V = 2.7V 2 DD CH1 15 f = 175ksps GND SAMPLE 1.5 3 CH2 14 SDI 4 1.0 ANALOG CH3 13 + SDO SERIAL INPUT 5 0.5 CH4 PORT 12 MUX SCK 6 CH5 11 0 CS/CONV 7 CH6 10 V REF 0.5 8 CH7/COM INTERNAL 1.25V REF 1.0 1.5 9 REFCOMP 2.0 0 16384 32768 49152 65536 1863L7L BD OUTPUT CODE 1863L7L G01 1863l7lfe 1 For more information www.linear.com/LTC1863L INL (LSB)LTC1863L/LTC1867L ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATION (Notes 1, 2) Supply Voltage (V ) ................................... 0.3V to 6V DD TOP VIEW Analog Input Voltage CH0 1 16 V DD CH0-CH7/COM (Note 3) ...........0.3V to (V + 0.3V) DD CH1 2 15 GND V , REFCOMP (Note 4) ......... 0.3V to (V + 0.3V) REF DD CH2 3 14 SDI Digital Input Voltage (SDI, SCK, CS/CONV) CH3 4 13 SDO (Note 4) ................................................. 0.3V to 10V 5 CH4 12 SCK Digital Output Voltage (SDO) ....... 0.3V to (V + 0.3V) 6 CH5 11 CS/CONV DD Power Dissipation .............................................. 500mW 7 10 CH6 V REF Operating Temperature Range 8 9 CH7/COM REFCOMP LTC1863LC/LTC1867LC/LTC1867LAC ..... 0C to 70C GN PACKAGE 16-LEAD NARROW PLASTIC SSOP LTC1863LI/LTC1867LI/LTC1867LAI .....40C to 85C T = 110C, = 95C/W JMAX JA Storage Temperature Range .................. 65C to 150C Lead Temperature (Soldering, 10 sec) ...................300C Consult ADI Marketing for parts specified with wider operating temperature ranges. ORDER INFORMATION