LMP92001_15 Datasheet, PDF (1/39 Pages) Texas Instruments – LMP92001 Analog System Monitor and Controller

LMP92001
www.ti.com
SNAS507B – FEBRUARY 2011 – REVISED APRIL 2012
LMP92001 Analog System Monitor and Controller
Check for Samples: LMP92001
FEATURES
1
•2 16 Analog Voltage Monitoring Channels
– 12-bit ADC with Programmable Input MUX
– No Missing Codes
– Total Unadjusted Error (TUE) ±0.1%
– Single-Shot or Continuous Conversion
Modes
– Programmable Window Comparator
Function
– Interrupt Signal Generation for Input Out-of-
Bound Condition
• 12 Programmable Analog Voltage Outputs
– Twelve 12-bit DACs
– Specified Monotonic
– Settling Time 8.5 µs
– Simultaneous Update of All Channels to
Same Value
– Asynchronous Output Control Forces Rail
Voltage at Output
• Voltage Reference
– User-Selectable Source: External or Internal
– Internal Reference 4.5V ±0.7%
• Analog Temperature Sensor
– Readable via ADC Channel 17
– Temperature Error ±2°C
• 8-bit GPIO Port
– Each Bit Individually Programmable
• I²C-Compatible Bus
– Supports Standard and Fast Modes
– Bus TIMEOUT Function
– Supports Block Data Transfers
APPLICATIONS
• RF PA Bias Monitoring and Control
• System Monitoring and Control
• Industrial Monitoring and Control
• Test Equipment and Instrumentation
DESCRIPTION
The LMP92001 is a complete analog monitoring and
control circuit which includes a sixteen channel 12-bit
Analog to Digital Converter (ADC), twelve 12-bit
Digital to Analog Converters (DACs), an internal
reference, an internal temp sensor, an 8-bit GPIO
port, and an I²C-compatible interface.
The ADC can be used to monitor rail voltages,
current sense amplifier outputs or sensors and
includes a programmable window comparator
function on six of its 16 channels to detect out-of
range conditions.
The DACs can be used to control PA bias points,
actuators, potentiometers, etc. When required, the
outputs can be instantaneously driven to either supply
rail using the output switches and the asynchronous
DAC control inputs.
Both ADC and DACs can use either the internal 4.5V
reference or an external reference independently.
The built-in temperature sensor is treated as the 17th
analog sense input. In addition, the 8-bit GPIO port
allows for the resources of the microcontroller to be
further extended, providing even more flexibility.
The LMP92001 is available in a space saving 54-pin
WQFN package and is operational over the full −
40°C to 125°C temperature range.
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 © 2011–2012, Texas Instruments Incorporated