LMP92018 Integrated, Multichannel ADC and DAC for Analog Monitoring & Control | TI.com

LMP92018 (ACTIVE)

Integrated, Multichannel ADC and DAC for Analog Monitoring & Control

Integrated, Multichannel ADC and DAC for Analog Monitoring & Control - LMP92018
Datasheet
 

Recommended alternative parts

  • AMC7823  - The device has SIMILAR FUNCTIONALITY but is not functionally equivalent to the compared device.   Analog monitoring and control device with eight 12-bit DACs, eight channel 12 bit ADCs, local temp. sensors and a precision current source to drive remote therm
  • AMC7812  - The device has SIMILAR FUNCTIONALITY but is not functionally equivalent to the compared device.   Analog monitoring and control device with twelve 12-bit DACs, 16 channel 12 bit ADCs, local and remote temp sensor

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.

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.

Features

  • 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

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Parametrics

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Part number Order ADC input channels (#) ADC resolution (bits) DAC channels DAC: resolution (Bits) Temperature sensing GPIOs Interface Special function Operating temperature range (C) Package Group Package size: mm2:W x L (PKG) ADC: sampling rate (KSPS) ADC: analog input range (Min) (V) ADC: analog input range (Max) (V) DAC: settling time (uS) DAC: output full scale (Min) (V) DAC: output full scale (Max) (V)
LMP92018 Order now 8     10     4     10     Local     12     SPI    
   
-40 to 125         500     0     5     20     0     5    
AMC7812 Order now 16     12     12     12     Local
Remote    
8     SPI
I2C    
Temp Sensor     -40 to 105     HTQFP | 64
VQFN | 64    
64HTQFP: 144 mm2: 12 x 12 (HTQFP | 64)
64VQFN: 81 mm2: 9 x 9 (VQFN | 64)    
500     -5     5     2     0     12.5    
AMC7812B Order now 16     12     12     12     Local
Remote    
8     I2C
SPI    
Temp Sensor     -40 to 125     HTQFP | 64
VQFN | 64    
64HTQFP: 144 mm2: 12 x 12 (HTQFP | 64)
64VQFN: 81 mm2: 9 x 9 (VQFN | 64)    
500     -5     5     2     0     12.5    
AMC7820 Order now 8     12     3     12     Remote     0     SPI     SDO     -40 to 85