LMP92018 Controller Datasheet

LMP92018 Datasheet, PDF, Equivalent


Part Number

LMP92018

Description

Analog System Monitor and Controller

Manufacture

etcTI

Total Page 30 Pages
Datasheet
Download LMP92018 Datasheet


LMP92018
LMP92018
www.ti.com
SNAS514B – NOVEMBER 2011 – REVISED MAY 2013
LMP92018 Analog System Monitor and Controller
Check for Samples: LMP92018
FEATURES
1
2 8 ANALOG VOLTAGE MONITORING
CHANNELS
– 10-Bit ADC with Programmable Input MUX
– Internal/External Reference
– Tolerates High-Source Impedance at Lower
Sampling Rates
• 4 PROGRAMMABLE ANALOG VOLTAGE
OUTPUTS
– Four 10-Bit DACs
– Internal/External Reference
– Drives Loads up to 1nF
• VOLTAGE REFERENCE
– User-Selectable Source: External or Internal
– Internal Reference 2.5V
• TEMPERATURE SENSOR
– ±2.5°C Accuracy
• 12-BIT GPIO PORT
– Each Bit Individually Programmable
– User-Selectable Rail
• SPI-COMPATIBLE BUS
– User-Selectable Rail
APPLICATIONS
• Communication Infrastructure
• System Monitoring and Control
• Industrial Monitoring and Control
DESCRIPTION
LMP92018 is a complete analog monitoring and
control circuit which integrates an eight channel 10-bit
Analog-to-Digital Converter (ADC), four 10-bit Digital-
to-Analog Converters (DACs), an internal reference,
an internal temperature sensor, a12-bit GPIO port,
and a 10MHz SPI interface.
The eight channels of the ADC can be used to
monitor rail voltages, current sense amplifier outputs,
health monitors or sensors while the four DACs can
be used to control PA (Power Amplifier) bias points,
control actuators, potentiometers, etc.
Both the ADC and DACs can use either the internal
2.5V reference or an external reference
independently allowing for flexibility in system design.
The built-in digital temperature sensor enables
accurate (±2.5°C) local temperature measurement
whose value is captured in the user accessible
register.
Block Diagram
IN[7:0]
8
VDD
OUT3
OUT0
Multiplexer
Temp. Sensor
LMP92018
Int/Ext
Ref
GPIO
12
REF
GPIO[11:0] VGPIO
SPI
Interface
4
CSB
SCLK
DIN
DOUT
DRDYB VIO
GND
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
All trademarks are the property of their respective owners.
2
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2011–2013, Texas Instruments Incorporated

LMP92018
LMP92018
SNAS514B – NOVEMBER 2011 – REVISED MAY 2013
www.ti.com
DESCRIPTION (CONTINUED)
The LMP92018 also includes a 12-bit GPIO port which allows for the resources of the microcontroller to be
further extended, thus providing even more flexibility and reducing the number of signal interfacing to the
microcontroller.
Both the GPIO port and the SPI compatible interface have independent supply pins enabling the LMP92018 to
interface with low voltage microcontrollers.
The LMP92018 is available in a space saving 36-pin WQFN package and is specified over the full -30°C to
+85°C temperature range.
Typical Application
5V
VDD
REF
5V 48V
1.8V
IN[7:0]
Voltage
Sense
Channels
8
VIO
DRDYB
uC LMP92018
SPI
4
CSB
SCLK
DIN
DOUT
OUT[3:0]
Analog
Voltage
Control
4
VGPIO
3.3V
GPIO[11:0]
Bidirectional
Digital Bus 12
Ratiometric
Sensing
LMP8640
Current
sensing
Scaled
Voltage
Sensing
LM94023
Temp
Analog
Sensors
ROUT<10k
+ Voltage
- Source
Servo
Actuator
Control
PA
Bias
Control
Digital
Control
Digital
Status
Indicators
2 Submit Documentation Feedback
Product Folder Links: LMP92018
Copyright © 2011–2013, Texas Instruments Incorporated


Features LMP92018 www.ti.com SNAS514B – NOVEM BER 2011 – REVISED MAY 2013 LMP92018 Analog System Monitor and Controller C heck for Samples: LMP92018 FEATURES 1 •2 8 ANALOG VOLTAGE MONITORING CHANNE LS – 10-Bit ADC with Programmable Inp ut MUX – Internal/External Reference – Tolerates High-Source Impedance at Lower Sampling Rates • 4 PROGRAMMABLE ANALOG VOLTAGE OUTPUTS – Four 10-Bit DACs – Internal/External Reference Drives Loads up to 1nF • VOLTAGE R EFERENCE – User-Selectable Source: Ex ternal or Internal – Internal Referen ce 2.5V • TEMPERATURE SENSOR – ±2. 5°C Accuracy • 12-BIT GPIO PORT – Each Bit Individually Programmable – User-Selectable Rail • SPI-COMPATIBLE BUS – User-Selectable Rail APPLICAT IONS • Communication Infrastructure System Monitoring and Control • In dustrial Monitoring and Control DESCRIP TION LMP92018 is a complete analog moni toring and control circuit which integr ates an eight channel 10-bit Analog-to-Digital Converter (ADC), four 10-bit Digitalto-Analog Converters (DACs),.
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