TI-TLA2528.pdf资源-CSDN文库

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ADVANCEINFORMATION

Example Applications

Device Block Diagram

Controller

TLA2528

AVDD (V

REF

)

AIN / GPIO

SIGNAL

+ noise

Reduced

noise

TLA2528

Controller

TLA2528

AIN0 / GPIO0

AIN1 / GPIO1

AIN2 / GPIO2

AIN3 / GPIO3

ADC

MUX

GPO Write

GPI Read

Pin CFG

AIN4 / GPIO4

AIN5 / GPIO5

AIN6 / GPIO6

AIN7 / GPIO7

Sequencer

C Interface

AVDD

GND

DVDD

SDA

SCL

ADDR

DECAP

Programmable

Averaging Filter

Product

Folder

Order

Now

Technical

Documents

Tools &

Software

Support &

Community

本文档旨在为方便起见，提供有关 TI 产品中文版本的信息，以确认产品的概要。有关适用的官方英文版本的最新信息，请访问 www.ti.com，其内容始终优先。 TI 不保证翻译的准确

性和有效性。在实际设计之前，请务必参考最新版本的英文版本。

English Data Sheet: SBAS961

TLA2528

ZHCSJS9 –MAY 2019

TLA2528 小小型型 8 通通道道 12 位位 ADC，，具具有有 I

C 接接口口及及 GPIO

1 特特性性

• 小封装尺寸：

– 3mm × 3mm WQFN

• 8 通道，可配置为以下任意组合：

– 最多 8 个模拟输入、数字输入或数字输出

• 用于 I/O 扩展的 GPIO：

– 开漏、推挽数字输出

• 宽工作范围：

– AVDD：2.35V 至 5.5V

– DVDD：1.65V 至 5.5V

– 温度范围：–40°C 至 +85°C

• I

C 接口：

– 高达 3.4MHz（高速）

– 8 个可配置 I

C 地址

• 可编程均值滤波器:

– 用于求平均值的可编程样本大小

– 利用内部转换求平均值

– 用于计算平均输出的 16 位分辨率

2 应应用用

• 监控功能

• 便携式仪表

• 电信基础设施

• 电源监控

3 说说明明

TLA2528 是一款易于使用的 8 通道多路复用 12 位逐

次逼近寄存器模数转换器 (SAR ADC)。8 个通道可独

立配置为模拟输入、数字输入或数字输出。该器件具有

一个用于执行 ADC 转换过程的内部振荡器。

TLA2528 通过 I

C 兼容接口进行通信，支持标准模式

(100kHz)、快速模式 (400kHz)、快速模式+ (1MHz) 和

高速模式 (3.4MHz)。通过在 ADDR 引脚上连接一个电

阻，可为 TLA2528 选择最多 8 个 I

C 地址。

器器件件信信息息

(1)

部部件件名名称称封封装装封封装装尺尺寸寸（（标标称称值值））

TLA2528 WQFN (16) 3.00mm × 3.00mm

(1) 如需了解所有可用封装，请见数据表末尾的可订购产品附录。

TLA2528 方方框框图图和和应应用用

ADVANCEINFORMATION

TLA2528

ZHCSJS9 –MAY 2019

www.ti.com.cn

目目录录

1 特特性性.......................................................................... 1

2 应应用用.......................................................................... 1

3 说说明明.......................................................................... 1

4 修修订订历历史史记记录录 ........................................................... 2

5 Pin Configuration and Functions......................... 3

6 Specifications......................................................... 4

6.1 Absolute Maximum Ratings ...................................... 4

6.2 ESD Ratings.............................................................. 4

6.3 Recommended Operating Conditions....................... 4

6.4 Thermal Information.................................................. 4

6.5 Electrical Characteristics........................................... 5

6.6 I

C Timing Requirements.......................................... 6

6.7 Timing Requirements................................................ 6

6.8 I

C Switching Characteristics.................................... 6

6.9 Switching Characteristics.......................................... 7

7 Detailed Description.............................................. 8

7.1 Overview ................................................................... 8

7.2 Functional Block Diagram ......................................... 8

7.3 Feature Description................................................... 9

7.4 Device Functional Modes........................................ 13

7.5 Programming........................................................... 16

7.6 TLA2528 Registers ................................................. 19

8 Application and Implementation ........................ 26

8.1 Application Information............................................ 26

8.2 Typical Applications ................................................ 26

9 Power Supply Recommendations...................... 28

9.1 AVDD and DVDD Supply Recommendations......... 28

10 Layout................................................................... 29

10.1 Layout Guidelines ................................................. 29

10.2 Layout Example .................................................... 29

11 器器件件和和文文档档支支持持 ..................................................... 30

11.1 接收文档更新通知 ................................................. 30

11.2 社区资源................................................................ 30

11.3 商标 ....................................................................... 30

11.4 静电放电警告......................................................... 30

11.5 Glossary................................................................ 30

12 机机械械、、封封装装和和可可订订购购信信息息....................................... 30

4 修修订订历历史史记记录录

注：之前版本的页码可能与当前版本有所不同。

日日期期修修订订版版本本说说明明

2019 年 5 月 * 初始发行版。

ADVANCEINFORMATION

TLA2528

ZHCSJS9 –MAY 2019

www.ti.com.cn

(1) Stresses beyond those listed under Absolute Maximum Rating may cause permanent damage to the device. These are stress ratings

only, which do not imply functional operation of the device at these or any other conditions beyond those indicated under Recommended

Operating Condition. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

(2) AINx/GPIOx refers to pins 1, 2, 3, 4, 5, 6, 15, and 16.

(3) Pin current must be limited to 10mA or less.

6 Specifications

6.1 Absolute Maximum Ratings

over operating ambient temperature range (unless otherwise noted)

(1)

MIN MAX UNIT

DVDD to GND –0.3 5.5 V

AVDD to GND –0.3 5.5 V

AINx/GPOx

(2)

GND – 0.3 AVDD + 0.3 V

ADDR GND – 0.3 2.1 V

Digital inputs GND – 0.3 5.5 V

Current through any pin except supply pins

(3)

–10 10 mA

Junction temperature, T

–40 125 °C

Storage temperature, T

stg

–60 150 °C

(1) JEDEC document JEP155 states that 500-V HBM allows safe manufacturing with a standard ESD control process.

(2) JEDEC document JEP157 states that 250-V CDM allows safe manufacturing with a standard ESD control process.

6.2 ESD Ratings

VALUE UNIT

(ESD)

Electrostatic discharge

Human body model (HBM), per ANSI/ESDA/JEDEC JS-001, all pins

(1)

±2000

Charged device model (CDM), per JEDEC specification JESD22-C101, all

pins

(2)

±500

(1) AINx refers to AIN0, AIN1, AIN2, AIN3, AIN4, AIN5, AIN6, and AIN7.

6.3 Recommended Operating Conditions

over operating free-air temperature range (unless otherwise noted)

PARAMETER TEST CONDITIONS MIN TYP MAX UNIT

POWER SUPPLY

AVDD Analog supply voltage 2.35 3.3 5.5 V

DVDD Digital supply voltage 1.65 3.3 5.5 V

ANALOG INPUTS

FSR Full-scale input range AIN

(1)

- GND 0 AVDD V

Absolute input voltage AIN

- GND –0.1 AVDD + 0.1 V

TEMPERATURE RANGE

Ambient temperature –40 25 85 ℃

(1) For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application

report.

6.4 Thermal Information

THERMAL METRIC

(1)

TLA2528

UNITRTE (WQFN)

16 PINS

θJA

Junction-to-ambient thermal resistance 49.7 °C/W

θJC(top)

Junction-to-case (top) thermal resistance 53.4 °C/W

θJB

Junction-to-board thermal resistance 24.7 °C/W

Junction-to-top characterization parameter 1.3 °C/W

Junction-to-board characterization parameter 24.7 °C/W

θJC(bot)

Junction-to-case (bottom) thermal resistance 9.3 °C/W

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