Datasheet

XTR108
5
SBOS187C
www.ti.com
Top View SSOP
PIN CONFIGURATION
V/I-0
V/I-1
V/I-2
V/I-3
V/I-4
V/I-5
C
FILTER
R
LIN
V
O
I
IN
I
O
I
RET
XTR108
OPA +IN
OPA –IN
OPA OUT
REF
OUT
REF
IN
R
SET
CS1
SCLK
SDIO
CS2
V
GATE
V
S
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
PIN ASSIGNMENTS
PIN NAME FUNCTION
V/I-0 MUX Input Channel 0 and/or I
REF
Out MUX Input to PGA and/or I
REF
to Sensor
V/I-1 MUX Input Channel 1 and/or I
REF
Out MUX Input to PGA and/or I
REF
to Sensor
V/I-2 MUX Input Channel 2 and/or I
REF
Out MUX Input to PGA and/or I
REF
to Sensor
V/I-3 MUX Input Channel 3 and/or I
REF
Out MUX Input to PGA and/or I
REF
to Sensor
V/I-4 MUX Input Channel 4 and/or I
REF
Out MUX Input to PGA and/or I
REF
to Sensor
V/I-5 MUX Input Channel 5 and/or I
REF
Out MUX Input to PGA and/or I
REF
to Sensor
C
FILTER
Filter Capacitor Filter to Reduce Chopper Noise in Autozeroing PGA
R
LIN
Linearization Linearization Range Adjustment Resistor
V
O
PGA Output PGA Amplified Output of Differential Sensor Input
I
IN
Current Input Input to Output Current Amplifier
I
O
Output Current 4-20mA Current for Output Loop
I
RET
Return Current Return for All External Circuitry Current
V
S
Voltage Regulator Supply Voltage for XTR and External Circuitry, If Used
V
GATE
Gate Voltage Gate Voltage for External MOSFET Transistor
CS2 Chip Select 2 Select for XTR Serial Port to External EEPROM (Output from XTR Only)
SDIO Serial Data Input/Output Serial Data Input or Output
SCLK Serial Clock Serial Clock
CS1 Chip Select 1 Select for External µC Serial Port (Input to XTR Only)
R
SET
Resistor for Reference Sets Current Reference
REF
IN
Voltage Reference Input Voltage Reference Input to XTR
REF
OUT
Voltage Reference Output Voltage Reference Output from Internal Bandgap
OPA OUT Uncommitted Op Amp Output Uncommitted Op Amp Output
OPA –IN Uncommitted Op Amp Negative Input Uncommitted Op Amp Negative Input
OPA +IN Uncommitted Op Amp Positive Input Uncommitted Op Amp Positive Input