Datasheet

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VDD SDI
CAL SCLK
RTD CSB
GUARD1 SDO_DIAG
INP VOUT
GUARD2 VOCM
VCMHI GND
VCM VREF
LMP91200
CSB
+
-
PGA
VDD
SCLK
SDI
VOUT
VOCM
VREF
SDO_DIAG
GND
VCMHI
VCM
GUARD2
INP
GUARD1
CAL
RTD
VCM
BUFFER
RANGE
SETTING
LMP91200
SPI
pH ELECTRODE
CONTROLLER
2-wire RTD
R_REF
pH
BUFFER
VOUT
MUX
VCM
MUX
pH Meter
LMP91200
SNAS571C –JANUARY 2012–REVISED MARCH 2013 www.ti.com
Typical Application
Connection Diagram
16-Pin TSSOP
Figure 1. Top View
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