Datasheet > SQA54AB

SQA54AB

更新时间： 2024-01-30 00:07:30

品牌	Logo	应用领域
德州仪器 - TI		监视器控制器
页数	文件大小	规格书
35页	1850K
描述
Analog System Monitor and Controller

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SQA54AB 数据手册

April 19, 2012

LMP92001

Analog System Monitor and Controller

Programmable window comparator function

■

1.0 General Description

Interrupt signal generation for input out-of-bound condition

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.

12 Programmable Analog Voltage Outputs

Twelve 12-bit DACs

■

Guaranteed Monotonic

Settling Time 8.5 µs

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.

Simultaneous update of all channels to same value

Asynchronous output control forces rail voltage at output

■

Voltage Reference

User-selectable source: External or Internal

■

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.

Internal Reference 4.5V ±0.7%

Analog Temperature Sensor

Readable via ADC channel 17

■

Both ADC and DACs can use either the internal 4.5V refer-

ence or an external reference independently.

Temperature Error ±2°C

8-bit GPIO Port

Each bit individually programmable

I²C-Compatible Bus

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.

■

Supports Standard and Fast Modes

■

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.

Bus TIMEOUT function

Supports Block data transfers

LLP-54 package (10 x 5.5 mm, 0.5 mm pitch)

2.0 Features

3.0 Applications

16 Analog Voltage Monitoring Channels

RF PA Bias Monitoring and Control

■

12-bit ADC with programmable input MUX

■

System Monitoring and Control

No Missing Codes

Industrial Monitoring and Control

Total Unadjusted Error (TUE) ±0.1%

Test Equipment and Instrumentation

■

Single-Shot or Continuous Conversion Modes

■

4.0 Block Diagram

30132736

National Semiconductor® is a registered trademark of National Semiconductor Corporation.

301327 SNAS507B

www.ti.com

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