GP22 中文数据手册.pdf

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1 概述

1.1 特性

1.2 方框原理图

1.3 订货号码

2 特性和规格

2.1 电气特性

2.2 转换器规格

2.3 时序

2.4 管脚描述

2.5 封装信息

2.6 电源

3 配置 & 读寄存器

3.1 配置寄存器

3.1.1 按字母排列的寄存器配置参数

3.1.2 配置寄存器

3.2 读寄存器

3.2.1 结果寄存器

3.2.2 状态寄存器

3.2.3 PW1ST 寄存器

3.3 EEPROM

3.4 SPI-接口

3.4.1 Opcode 操作码解释

3.4.2 SPI 通信样例

4 前端转换器

4.1 TDC 测量范围 1

4.1.1 概述

4.1.2 测量流程

4.2 TDC 测量范围 2

4.2.1 概述

4.2.2 测量流程

4.2.3 Stop 屏蔽

4.3 模拟输入部分

4.3.1 offset设置

4.4 第一波模式

4.4.1 相关的寄存器配置

4.5 温度测量

5 详细描述和特殊功能

5.1 振荡器

5.1.1 高速振荡器

5.1.2 32.768 kHz 振荡器

5.1.3 校准高速陶瓷振荡器

5.1.4 如何使用时钟校准

5.2 脉冲发生器

5.2.1 概述

5.2.2 配置

5.3 快速初始化

5.4 噪声单元

6 应用

6.1 超声波热量表

6.2 超声波水表

7 其它

7.1 错误报告

7.1.1 时间溢出的温度测量

7.2 最后更改

2 特性和规格

2.1 电气特性

2.2 转换器规格

2.3 时序

2.4 管脚描述

2.5 封装信息

2.6 电源

3 配置 & 读寄存器

3.1 配置寄存器

3.1.1 按字母排列的寄存器配置参数

3.2 读寄存器

3.3 读寄存器

3.3.1 结果寄存器

3.3.2 状态寄存器

3.3.3 PW1ST 寄存器

3.4 EEPROM

3.5 SPI-接口

3.5.1 Opcode 操作码解释

3.5.2 SPI 通信样例

4 前端转换器

4.1 TDC 测量范围 1

4.1.1 概述

4.1.2 测量流程

4.2 TDC 测量范围 2

4.2.1 概述

4.2.2 测量流程

4.2.3 Stop 屏蔽

4.3 模拟输入部分

4.3.1 offset设置

4.4 第一波模式

4.4.1 相关的寄存器配置

4.5 温度测量

6 Applications

6.1 Ultrasonic Heatmeter

时间数字转换器临时数据手册 TDC-GP22 超声波热量表和水表双通道的时间数字转换器 2012年6月26日版本号码.: DB_GP22_cn V0.5

时间数字转换器 TDC-GP22 Published by acam-messelectronic gmbh © acam-messelectronic gmbh 2012 Disclaimer / Notes The information provided by this preliminary datasheet is believed to be close to the final product. However, it is theoretical and no responsibility is assumed by acam for its use, nor for any infrin- gements of patents or other rights of third parties that may result from its use. The information is subject to change without notice and is provided „as is“ without warranty of any kind (expressed or implied). Picostrain is a registered trademark of acam. All other brand and product names in this document are trademarks or service marks of their respective owners. Support For a complete listing of direct sales, distributors and sales representatives visit the acam website at: http://www.acam.de/company/distributors For technical support you can contact the acam support team in the headquarter in Germany or the Distributor in your country. The contact details of acam in Germany are: sales@acam.de or by phone +49-7244-74190. 2 acam-messelectronic gmbh - Friedrich-List-Str. 4 - D-76297 Stutensee-Blankenloch - Germany - www.acam.de

TDC-GP22 目录 1 概述 2 特性和规格 3 配置 & 读寄存器 4 前端转换器 5 详细描述和特殊功能 6 应用 7 其它 2.1 电气特性 2.2 转换器规格 2.3 时序 2.4 管脚描述 2.5 封装信息 2.6 电源 3.1 配置寄存器 3.2 读寄存器 3.3 读寄存器 3.4 EEPROM 3.5 SPI-接口 4.1 TDC 测量范围 1 4.2 TDC 测量范围 2 4.3 模拟输入部分 4.4 第一波模式 4.5 温度测量 5.1 振荡器 5.2 脉冲发生器 5.3 快速初始化 5.4 噪声单元 7.1 错误报告 1-1 2-2 2-4 2-6 2-7 2-8 2-9 2-11 3-2 3-4 3-14 3-16 3-17 4-2 4-8 4-15 4-16 4-21 5-1 5-4 5-7 5-7 6-2 7-1 acam-messelectronic gmbh - Friedrich-List-Str. 4 - D-76297 Stutensee-Blankenloch - Germany - www.acam.de 3

时间数字转换器 TDC-GP22 概概 ............................................................................................................................................................................................................... 1-1 1 概概 ............................................................................................................................................................................................................... 1-1 1.1 概概概概概 ............................................................................................................................................................................................................ 1-2 1.2 概概概概 ............................................................................................................................................................................................................. 1-2 1.3 概概概概概 ............................................................................................................................................................................................................ 2-2 2 概概概概 ............................................................................................................................................................................................................. 2-2 2.1 概概概概概 ............................................................................................................................................................................................................ 2-4 2.2 概概 ............................................................................................................................................................................................................... 2-6 2.3 概概概概 ............................................................................................................................................................................................................. 2-8 2.4 概概概概 ............................................................................................................................................................................................................. 2-9 2.5 概概 ............................................................................................................................................................................................................. 2-11 2.6 概概 & 概概概概 ....................................................................................................................................................................................................... 3-2 3 概概概概概 .......................................................................................................................................................................................... 3-2 3.1 概概概概概概概概概概概概概 .................................................................................................................................................................................................... 3-2 3.1.1 概概概概概 ............................................................................................................................................................................................................ 3-4 3.1.2 概概概概 ........................................................................................................................................................................................................... 3-14 3.2 概概概概概 .......................................................................................................................................................................................................... 3-14 3.2.1 3.2.2 概概概概概 .......................................................................................................................................................................................................... 3-16 3.2.3 PW1ST 概概概 ................................................................................................................................................................................................ 3-16 EEPROM ................................................................................................................................................................................................... 3-16 3.3 3.4 SPI-概概 ........................................................................................................................................................................................................ 3-17 3.4.1 Opcode 概概概概概 ............................................................................................................................................................................................... 3-19 3.4.2 SPI 概概概概 ..................................................................................................................................................................................................... 3-20 概概概概概 ............................................................................................................................................................................................................ 4-2 4 TDC 概概概概 1 ................................................................................................................................................................................................... 4-2 4.1 概概 ............................................................................................................................................................................................................... 4-2 4.1.1 概概概概 ............................................................................................................................................................................................................. 4-3 4.1.2 4.2 TDC 概概概概 2 ................................................................................................................................................................................................... 4-8 概概 ............................................................................................................................................................................................................... 4-8 4.2.1 4.2.2 概概概概 ........................................................................................................................................................................................................... 4-10 4.2.3 Stop 概概 ...................................................................................................................................................................................................... 4-14 4.3 概概概概概概 ......................................................................................................................................................................................................... 4-15 4.3.1 offset概概 .................................................................................................................................................................................................... 4-16 4.4 概概概概概 .......................................................................................................................................................................................................... 4-16 概概概概概概概概 ....................................................................................................................................................................................................... 4-20 4.4.1 概概概概 ........................................................................................................................................................................................................... 4-21 4.5 概概概概概概概概概 ........................................................................................................................................................................................................ 5-1 5 概概概 .............................................................................................................................................................................................................. 5-1 5.1 5.1.1 概概概概概 ............................................................................................................................................................................................................ 5-1 5.1.2 32.768 kHz 概概概 ............................................................................................................................................................................................ 5-2 5.1.3 概概概概概概概概概 ........................................................................................................................................................................................................ 5-2 概概概概概概概概 ........................................................................................................................................................................................................ 5-3 5.1.4 概概概概概 ............................................................................................................................................................................................................ 5-4 5.2 概概 ............................................................................................................................................................................................................... 5-4 5.2.1 概概 ............................................................................................................................................................................................................... 5-4 5.2.2 概概概概概 ............................................................................................................................................................................................................ 5-7 5.3 5.4 概概概概 ............................................................................................................................................................................................................. 5-7 概概 ............................................................................................................................................................................................................... 6-2 6 概概概概概概 ........................................................................................................................................................................................................... 6-2 6.1 概概概概概 ............................................................................................................................................................................................................ 6-6 6.2 概概 ............................................................................................................................................................................................................... 7-1 7 概概概概 ............................................................................................................................................................................................................. 7-1 7.1 ................................................................................................................................................................................................................. 7-1 概概概概概概概概概 ........................................................................................................................................................................................................ 7-1 7.1.1 7.2 概概概概 ............................................................................................................................................................................................................. 7-1 4 acam-messelectronic gmbh - Friedrich-List-Str. 4 - D-76297 Stutensee-Blankenloch - Germany - www.acam.de

TDC-GP22 1 TDC-GP22 为TDC-GP21的下一代升级产品.这颗芯片是与TDC-GP21芯片100%管脚和功能兼容的芯片,而且带有更概述强大的功能. 尤其这颗芯片的最新第一波检测功能,将使TDC-GP22非常适合于高动态范围的超声波水表的应用.可编程的比较器offset调整范围增加到了 ± 35 mV ,而且这个比较器offset将会在第一波检测后自动回到0点比较.测量第一个回波脉冲的相对宽度将会给用户一个对于接收信号强度的提示.通过这个提示信息可以用于系统的长期覆盖物的信号减弱判断,以及用于气泡检测.多个测量脉冲的数据处理和数据读出功能将会比 TDC-GP21更加简单方便. 总而言之,TDC-GP22是简化超声波热量表设计的又一次性能提升,而且是紧凑型超声波水表设计的非常重要的革命性的升级. 1.1 特性测量范围 2 特殊功能单通道典型90 ps分辨率脉冲发生器最多可发 127 个脉冲双精度模式45ps,四精度模式 22 ps 测量范围 500 ns 到 4 ms 上升和/或下降沿触发高精度stop屏蔽窗口设置 3-个脉冲测量能力,带有自动3个数据处理功能低功耗 32 kHz 振荡器 (500 nA) 模拟输入电路时钟标定单元 7x32 位 EEPROM 斩波稳定低漂移比较器,可编程offset,±35 mV 第一个波检测: 在第一波检测后比较器自动调整测量范围 1 offset到0,可以选择相对于第一个波的测量回波双通道典型精度 90 ps 第一个波脉冲宽度测量用于信号质量检测以及气单通道双精度 45 ps 泡的检测测量范围 3.5 ns (0 ns) 到 2.5 µs 用于输入选择的内部集成模拟开关 20 ns 最小脉冲间隔, 最多接受4个脉冲外部电路仅需要2个电阻和2个电容在测量范围1中最高可达1百万次测量每秒温度测量单元综述 2 个或4个传感器, PT500/PT1000 或者更高 4-线制SPI接口内部集成施密特触发器测量范围1当中最高可以测量每秒钟一百万次应用外部施密特触发器16-位有效精度,应用内部 I/O 电压 2.5 V 到 3.6 V 低噪声触发器 17.5-位有效精度核心电压 2.5 V 到 3.6 V 超低测量功能 (每30秒测量一次时为0.08 µA ) 温度范围 – 40 °C 到 +125 °C QFN 32 封装 acam-messelectronic gmbh - Friedrich-List-Str. 4 - D-76297 Stutensee-Blankenloch - Germany - www.acam.de 1-1

时间数字转换器 TDC-GP22 1 1.2 概述方框原理图 1.3 名称# TDC-GP22 TDC-GP22 订货号码封装数量; 包装订货号码 QFN32 5000/3000; 卷装 MNR 1950 QFN32 490; 托盘 MNR 1949 MNR 1951 GP22-EVA-KIT 系统 1; 盒装本产品满足ROHS要求,不含铅. 1-2 acam-messelectronic gmbh - Friedrich-List-Str. 4 - D-76297 Stutensee-Blankenloch - Germany - www.acam.de

TDC-GP22 2 特性和规格 ................................................................................................2-2 2.1 电气特性 .............................................................................................................................................................. 2-2 2.2 转换器规格 .......................................................................................................................................................... 2-4 2.3 时序 ...................................................................................................................................................................... 2-6 2.4 管脚描述 .............................................................................................................................................................. 2-8 2.5 封装信息 .............................................................................................................................................................. 2-9 2.6 电源 ....................................................................................................................................................................2-11 acam-messelectronic gmbh - Friedrich-List-Str. 4 - D-76297 Stutensee-Blankenloch - Germany - www.acam.de 2-1 2-1

时间数字转换器 TDC-GP22 2 2.1 绝对最大额定值特性和规格电气特性供电电压 V V cc vs. GND io vs. GND Vin 存储温度 (Tstg) ESD 评估 (HBM), 每个管脚最大结温 (Tj) 推荐使用工作条件 - 0.3 到 4.0 - 0.3 到 4.0 - 0.5 到 Vcc + 0.5 - 55 到 150 > 2 max.125 V V V °C kV °C 参数核心供电电压* I/O 供电电压符号 Vcc Vio tri tfa tri tfa Ta Rth(j-a) 温敏电阻 *包括晶振管脚 XIN, XOUT, Clk32In, Clk32Out Schmitt Trigger 上升沿时间 Schmitt Trigger上升沿时间一般输入上升沿时间一般输入下降沿时间环境温度条件 Vio = Vcc Tj不能超过125°C 结-环境最小典型最大单位 2.5 2.5 -40 3.6 3.6 200 200 5 5 125 V V ns ns ms ms °C K/W 28 直流电特性 (Vio = Vcc = 3.0 V, Tj = -40 到 +85°C) 符号 I32 Ihs Itmu Iddq Io Voh Vol 参数电流 32 kHz晶振 4 Mhz 晶振电流条件 Icc + Iio, 仅当 32kHz 晶振工作时 Vcc = Vio = 3.6 V = 3.0 V 关闭时间测量单元电流仅当时间测量开启静态电流操作电流输出高电压输出低电压所有时钟关闭, @ 85 °C TOF-UP/DOWN, 1/s 温度平均, PT1000, 1/30s Ioh= tbd mA Vio=Min. Iol = tbd mA, Vio=Min 最小典型最大单位 1.0 200 130 < 1 4 < 0.1 1.1 0.15 0.8Vio 0.2Vio µA µA µA nA mA µA µA V V 2-2 acam-messelectronic gmbh - Friedrich-List-Str. 4 - D-76297 Stutensee-Blankenloch - Germany - www.acam.de

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