MLX90314_12 Datasheet, PDF (8/28 Pages) Melexis Microelectronic Systems – Programmable Sensor Interface

MLX90314
Programmable Sensor Interface
Table 3. Pin Description
Pin Signal
Name
1,2 I/O1, 2
3 TSTB
4 FLT
Description
Bi-directional I/O. Can also be used as input to A/D converter. I/O can be
controlled by serial communications or by firmware as alarm inputs or level
out. (unconnected when not used)
Test pin for Melexis production testing. (in normal application connected to
VDD)
Filter pin; allows for connection of a capacitor to the internal analog path.
5 OFC
6,7 VBN,VBP
Offset control output. Provides access to the internal programmed offset
control voltage for use with external circuitry. (unconnected when not used)
Bridge inputs, negative and positive.
8 TMP
9
V_DD
10 FET
11 V_DD1
12 VMO
Temperature sensor input. An external temperature sensor can be used in
conjunction with the internal one. The external sensor can provide a
temperature reading at the location of the bridge sensor.
Regulated supply voltage. Used for internal analog circuitry to ensure accurate
and stable signal manipulation.
Regulator FET gate control. For generating a stable supply for the bridge
sensor and internal analog circuitry (generates regulated voltage for VDD).
Unregulated supply voltage. Used for digital circuitry and to generate FET
output.
Voltage mode output. Compensated sensor output voltage.
13 CMO
Current mode output. Compensated sensor output for current mode operation.
14 CMN
Current mode negative rail. Current mode return path.
15 GND
Power supply return.
16 COMS
Serial communications pin. Bi-directional serial communication signal for
reading and writing to the EEPROM.
Figure 2. Pinout (SO16W (LW) Package)
3901090314
Rev 008
Page 8
Apr/12