Linear Technology DC2296 Demo Manual page 6

DEMO MANUAL DC2296
HarDware setup
The universal temperature measurement board has a
built-in sense resistor for RTD applications as well as a
cold junction sensor diode for thermocouple applications
(see Figure 6 for the DC2211 schematic diagram). The
sense resistor is a 2kΩ ±0.1% 10ppm/°C sense resistor
on channels 1 and 2 which may be used with any of the
supported RTD sensor types. The precise value of this
sense resistor is stored in an on-board EEPROM. The
LTC2983 demo software can read this EEPROM and use
to configure the sense resistor value in the LTC2983's
configuration memory.
6
J2
R5, 100
R4, 100
R3, 100
R2, 100
R1, 100
Q
1
Figure 6. DC2211 universal Temperature Measurement Board Schematic
The external interface on the universal temperature mea-
surement board is an 8-position screw-terminal block
with the flowing pinout.
Table 1. DC2211 Terminal Connector pinout
Position A LTC2983 CH2 as well as the low side of the on-board 2k
sense resistor
Position B LTC2983 CH3
Position C LTC2983 CH4
Position D LTC2983 CH5
Position E Common/Ground Connection
Position F Common/Ground Connection
Position G Common/Ground Connection
Position H Common/Ground Connection
R6
J1
dc2296fa