Multiplexer

LMP92018

8

Temp. Sensor

Int/Ext

Ref

4

SPI

Interface

12

GPIO

REF

GPIO[11:0]

CSB

SCLK

DIN

DOUT

OUT3

OUT0

IN[7:0]

DRDYB

VGPIO

VIO

VDD

GND

LMP92018

www.ti.com

SNAS514B – NOVEMBER 2011 – REVISED MAY 2013

LMP92018 Analog System Monitor and Controller

Check for Samples: LMP92018

1

FEATURES

APPLICATIONS

2

•

8 ANALOG VOLTAGE MONITORING

•

Communication Infrastructure

CHANNELS

•

System Monitoring and Control

–

10-Bit ADC with Programmable Input MUX

•

Industrial Monitoring and Control

–

Internal/External Reference

DESCRIPTION

–

Tolerates High-Source Impedance at Lower

LMP92018 is a complete analog monitoring and

Sampling Rates

control circuit which integrates an eight channel 10-bit

•

4 PROGRAMMABLE ANALOG VOLTAGE

Analog-to-Digital Converter (ADC), four 10-bit Digital-

OUTPUTS

to-Analog Converters (DACs), an internal reference,

–

Four 10-Bit DACs

an internal temperature sensor, a12-bit GPIO port,

and a 10MHz SPI interface.

–

Internal/External Reference

–

Drives Loads up to 1nF

The eight channels of the ADC can be used to

monitor rail voltages, current sense amplifier outputs,

•

VOLTAGE REFERENCE

health monitors or sensors while the four DACs can

–

User-Selectable Source: External or Internal

be used to control PA (Power Amplifier) bias points,

–

Internal Reference 2.5V

control actuators, potentiometers, etc.

•

TEMPERATURE SENSOR

Both the ADC and DACs can use either the internal

–

±2.5°C Accuracy

2.5V

reference

or

an

external

reference

independently allowing for flexibility in system design.

•

12-BIT GPIO PORT

–

Each Bit Individually Programmable

The

built-in

digital

temperature

sensor

enables

accurate (±2.5°C) local temperature measurement

–

User-Selectable Rail

whose value is captured in the user accessible

•

SPI-COMPATIBLE BUS

register.

–

User-Selectable Rail

Block Diagram

1

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Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

2

All trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Copyright © 2011–2013, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.