Overview
The LMP92001SQE/NOPB, produced by Texas Instruments, is a comprehensive analog system monitor and controller. This integrated circuit is designed to provide a robust interface between a programmable supervisor, such as a microcontroller, and an analog system. It features a 16-channel 12-bit Analog to Digital Converter (ADC), 12 programmable 12-bit Digital to Analog Converters (DACs), an internal temperature sensor, an 8-bit General Purpose Input/Output (GPIO) port, and an I2C-compatible interface. This device is particularly suited for various analog monitoring and control applications, including base-station PA subsystems, industrial monitoring, and test equipment.
Key Specifications
| Parameter | Value | Units |
|---|---|---|
| Number of Analog Voltage Monitoring Channels | 16 | - |
| ADC Resolution | 12 bits | - |
| Number of DACs | 12 | - |
| DAC Resolution | 12 bits | - |
| Internal Reference Voltage | 4.5V ±0.7% | V |
| Temperature Range | -40°C to 125°C | °C |
| Package Type | 54-pin WQFN (10x5.5) | - |
| I2C Interface | Standard and Fast Modes, Block Data Transfers | - |
| GPIO Port | 8-bit, individually programmable | - |
| Settling Time | 8.5 µs | µs |
Key Features
- 16-Channel Analog Voltage Monitoring: Includes a 12-bit ADC with a programmable input multiplexer to monitor up to 16 external voltages and an internal temperature sensor.
- 12 Programmable Analog Voltage Outputs: Twelve 12-bit DACs for controlling PA bias points, actuators, potentiometers, etc.
- Programmable Window Comparator: Function on six of the ADC channels to detect out-of-range conditions and generate interrupt signals.
- Internal Reference and Temperature Sensor: Internal 4.5V reference voltage and an analog temperature sensor.
- I2C-Compatible Interface: Supports standard and fast modes, block data transfers, and bus timeout function.
- 8-bit GPIO Port: Individually programmable for expanding microcontroller capabilities.
- Asynchronous DAC Control: Outputs can be instantaneously driven to either supply rail using asynchronous control inputs.
Applications
- Base-Station PA Subsystems: Ideal for monitoring and controlling power amplifier bias points in base stations.
- Industrial Monitoring and Control: Suitable for monitoring and controlling various industrial processes and systems.
- Test Equipment and Instrumentation: Used in test equipment for precise voltage monitoring and control.
- RF PA Bias Monitoring and Control: Monitors and controls RF power amplifier bias points.
- Servo and Actuator Control: Controls servo motors and actuators in various applications.
Q & A
- What is the primary function of the LMP92001?
The LMP92001 is a comprehensive analog system monitor and controller, providing a robust interface between a programmable supervisor and an analog system.
- How many analog voltage monitoring channels does the LMP92001 have?
The LMP92001 has 16 analog voltage monitoring channels.
- What is the resolution of the ADC and DACs in the LMP92001?
Both the ADC and DACs have a resolution of 12 bits.
- What is the temperature range of the LMP92001?
The LMP92001 operates over a temperature range of -40°C to 125°C.
- What type of interface does the LMP92001 use for communication?
The LMP92001 uses an I2C-compatible interface.
- Can the GPIO port be programmed individually?
Yes, each bit of the 8-bit GPIO port is individually programmable as an input or output.
- What is the settling time of the ADC in the LMP92001?
The settling time of the ADC is 8.5 µs.
- Can the DAC outputs be driven to either supply rail asynchronously?
Yes, the DAC outputs can be driven to either supply rail using asynchronous control inputs.
- Does the LMP92001 have an internal temperature sensor?
Yes, the LMP92001 includes an internal analog temperature sensor.
- What is the package type of the LMP92001?
The LMP92001 is available in a 54-pin WQFN (10x5.5) package.
