Document
( DataSheet : www.DataSheet4U.com )
LTC1863L/LTC1867L Micropower, 3V, 12-/16-Bit, 8-Channel 175ksps ADCs
FEATURES
■ ■ ■
DESCRIPTIO
■ ■ ■ ■ ■ ■ ■ ■ ■
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/MICROWIRETM 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
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.
U APPLICATIO S
■ ■ ■ ■ ■
Industrial Process Control High Speed Data Acquisition Battery Operated Systems Multiplexed Data Acquisition Systems Imaging Systems
BLOCK DIAGRA
CH0 CH1 CH2 CH3 CH4 CH5 CH6 CH7/COM 1 2 3 4 5 6 7 8 ANALOG INPUT MUX
LTC1863L/LTC1867L
Integral Nonlinearity vs Output Code (LTC1867L)
16 15 14 VDD GND SDI SDO SCK CS/CONV VREF
INL (LSB)
2.0 1.5 1.0 0.5 0 –0.5 –1.0 –1.5
VDD = 2.7V fSAMPLE = 175ksps
+ –
12-/16-BIT 175ksps ADC
SERIAL PORT
13 12 11 10
INTERNAL 1.25V REF
9
1863L7L BD
REFCOMP
–2.0
0
www.DataSheet4U.com
U
16384 32768 OUTPUT CODE 49152 65536
W
www.DataSheet4U.com
1863L7L G01
1863l7lfa
1
LTC1863L/LTC1867L
ABSOLUTE
(Notes 1, 2)
AXI U RATI GS
U W U PACKAGE/ORDER I FOR ATIO
TOP VIEW CH0 1 CH1 2 CH2 3 CH3 4 CH4 5 CH5 6 CH6 7 CH7/COM 8 16 VDD 15 GND 14 SDI 13 SDO 12 SCK 11 CS/CONV 10 VREF 9 REFCOMP
Supply Voltage (VDD) ................................... –0.3V to 6V Analog Input Voltage CH0-CH7/COM (Note 3) .......... – 0.3V to (VDD + 0.3V) VREF, REFCOMP (Note 4)......... – 0.3V to (VDD + 0.3V) Digital Input Voltage (SDI, SCK, CS/CONV) (Note 4) .................................................– 0.3V to 10V Digital Output Voltage (SDO) ....... – 0.3V to (VDD + 0.3V) Power Dissipation .............................................. 500mW Operating Temperature Range LTC1863LC/LTC1867LC/LTC1867LAC .... 0°C to 70°C LTC1863LI/LTC1867LI/LTC1867LAI .. – 40°C to 85°C Storage Temperature Range ................. – 65°C to 150°C Lead Temperature (Soldering, 10 se.