Datasheet

LMP90100
SNAS510P –JANUARY 2011–REVISED MARCH 2013 www.ti.com
Pin Functions
PIN DESCRIPTIONS
Pin # Pin Name Type Function
1 VA Analog Supply Analog power supply pin
2 - 4 VIN0 - VIN2 Analog Input Analog input pins
5 - 7
(LMP90100, VIN3 - VIN5 Analog Input Analog input pins
LMP90099)
5 - 7
(LMP90098, VIN3 - VIN5 No Connect No connect: must be left unconnected
LMP90097)
8 VREFP1 Analog Input Positive reference input
9 VREFN1 Analog Input Negative reference input
10 VIN6 / VREFP2 Analog Input Analog input pin or VREFP2 input
11 VIN7 / VREFN2 Analog Input Analog input pin or VREFN2 input
12 - 13
(LMP90100, IB2 & IB1 Analog output Excitation current sources for external RTDs
LMP90098)
12 - 13
(LMP90099, IB2 & IB1 No Connect No connect: must be left unconnected
LMP90097)
14 XOUT Analog output External crystal oscillator connection
15 XIN / CLK Analog input External crystal oscillator connection or external clock input
16 GND Ground Power supply ground
17 CSB Digital Input Chip select bar
18 SCLK Digital Input Serial clock
19 SDI Digital Input Serial data input
20 SDO / DRDYB Digital Output Serial data output and data ready bar
21 - 26 D0 - D5 Digital IO General purpose input/output (GPIO) pins
27 D6 / DRDYB Digital IO General purpose input/output pin or data ready bar
28 VIO Digital Supply Digtal input/output supply pin
Thermal Pad You can leave this thermal pad floating.
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