LMP92001 Datasheet, PDF (1/35 Pages) Texas Instruments – Analog System Monitor and Controller

LMP92001
April 19, 2012
Analog System Monitor and Controller
1.0 General Description
The LMP92001 is a complete analog monitoring and control
circuit which includes a sixteen channel 12-bit Analog to Dig-
ital Converter (ADC), twelve 12-bit Digital to Analog Convert-
ers (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 in-
stantaneously 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 refer-
ence 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, pro-
viding even more flexibility.
The LMP92001 is available in a space saving 10mmx5.5mm
LLP 54-pin package and is operational over the full − 40°C to
125°C temperature range.
2.0 Features
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}
■ ^{Guaranteed 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}
LLP-54 package (10 x 5.5 mm, 0.5 mm pitch)
3.0 Applications
■ ^{RF PA Bias Monitoring and Control}
■ ^{System Monitoring and Control}
■ ^{Industrial Monitoring and Control}
■ ^{Test Equipment and Instrumentation}
4.0 Block Diagram
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