GP8212ASL-TC50-EW

P-1 特性  将I2C信号输入，将数据线性转换成4-20mA/0-20mA的模拟电流输出。  输入信号范围15Bit，0x0000-0x7FFF  输入I2C信号高电平：2.7V- 5.5V  3bit I2C硬件地址位  输出电流线性度误差 0.01%  电源电压：9V -36V  功耗：VCC 1M 22u 1M 0.5p 15Ω RL CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. Linearin and designs are registered trademarks of Linearin Technology Corporation. © Copyright Linearin Technology Corporation. All Rights Reserved. All other trademarks mentioned are the property of their respective owners. 负载 FN1601-74.1 — Data Sheet GP8212ASL DAC (Digital to Analog Converter) 15bitDAC I2C to 4-20mA/0-20mA P-4 3. 典型应用 3.2 操作方法 3.2.1 Start、Stop条件、有效数据、数据变换格式 SCL SDA Start 条件 Stop 条件 有效数据 数据变换 3.2.2 ACK格式 Start Condition SCL Data In Data Out ACK 3.2.3如下图设置地址0x02，将15bit DATA数据分为DATA Low和DATA High写入，DATA Low 为低Byte， DATA High为高Byte，输出相对应的电流为： IOUT=1.25V/RS*DATA/0xFFF。I2C命令中，包含3bit硬件地 址位，可以实现8片GP8212ASL芯片的并接使用 S T A R T SDA 数据 DATA Low 1 0 1 1 A AA DDDD DDDD 0 A0 0 0 0 0 01 0 A A 2 1 0 7 6 5 4 3 2 1 0 AM A L A CS C SC KB K BK CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. Linearin and designs are registered trademarks of Linearin Technology Corporation. © Copyright Linearin Technology Corporation. All Rights Reserved. All other trademarks mentioned are the property of their respective owners. S T O P DATA High D D D D D 0 1 1 1 1 1 4 3 2 1 0 DD A 9 8 L A SC BK FN1601-74.1 — Data Sheet GP8212ASL DAC (Digital to Analog Converter) 15bitDAC I2C to 4-20mA/0-20mA P-5 3. 典型应用 3.2 操作方法 3.2.4 GP8212ASL支持将电压数据保存在芯片内，保证掉电启动后依旧能处于相应的电压输出状态。 通过发送下图所示数据，可以实现写入的数据固化到芯片内部。 S T A R T SDA 数据 S ST T A OR PT 0 1 0 S T O P 0 0 0 1 0 00 0 A0 0 0 0 0 01 1 A A C K S T A R T A C K DATA6 DATA1 DATA0 0 0 0 0 0 00 0 1 1 0 1 1 0 00 0 1 0 0 0 0 0 00 0 1 0 0 0 0 0 00 0 1 0 0 0 0 0 00 0 1 M S B S T A R T 等待7ms以上 L S B M S B L S B M S B S ST T A OR PT 0 1 0 S T O P 0 0 0 1 0 00 0 A0 0 0 0 0 00 0 A A C K CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. Linearin and designs are registered trademarks of Linearin Technology Corporation. © Copyright Linearin Technology Corporation. All Rights Reserved. All other trademarks mentioned are the property of their respective owners. S T O P A C K L S B FN1601-74.1 — Data Sheet GP8212ASL DAC (Digital to Analog Converter) 15bitDAC I2C to 4-20mA/0-20mA 4. 功能说明 GP8212ASL是一款高性能DAC芯片，数字量以I2C协议信号的方式输入到芯片中。通过在FB进行反馈采样，实 现闭环的电流输出，并根据需求接入负载电阻，通常选择低温漂的50欧姆电阻，便可以通过IOUT输出 0-25mA 电流。 电流大小为：IOUT=1.25V/RS * (DATA/0x7FFF) CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. Linearin and designs are registered trademarks of Linearin Technology Corporation. © Copyright Linearin Technology Corporation. All Rights Reserved. All other trademarks mentioned are the property of their respective owners. FN1601-74.1 — Data Sheet P-6 GP8212ASL DAC (Digital to Analog Converter) 15bitDAC I2C to 4-20mA/0-20mA P-7 5. 交流特性 符号 fsclk 描述 最小 默认 I2C时钟频率 最大 单位 400K Hz 6. 直流特性 符号 描述 VCC 电源电压 ICC 电源功耗 IOUT 输出电流 ΔIOUT*1 输出电流误差 Lout 输出电流线性度 Tco 温飘系数 RL*2 负载电阻 测试条件 最小 默认 最大 单位 9 24 36 V 0.7 1 mA 25 mA 0.5 % VCC @24V 空载 0 与IOUT输出范围的比例 0.01 0.01 VCC@24V *1：初始输出电流精度0.5%，经过两点校准，可以实现0.01%的精度。 *2：此负载最大值指的是值外扩2SD882三极管的情况。 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. Linearin and designs are registered trademarks of Linearin Technology Corporation. © Copyright Linearin Technology Corporation. All Rights Reserved. All other trademarks mentioned are the property of their respective owners. % 50 PPM/℃ 800 Ω FN1601-74.1 — Data Sheet GP8212ASL DAC (Digital to Analog Converter) 15bitDAC I2C to 4-20mA/0-20mA P-8 7. 订购须知 GP 8 2 12ASL - X - XX 产品类型 8:PAC/DAC 9:APC 温度范围 W:-40°C-85°C 输入信号 1:PWM 2:I2C 系列号 封装 E:ESOP10 温度系数 TC50:50PPM/℃ TC25:25PPM/℃ 封装 工作温度 电源 温度系数 订购码 ESOP10 -40℃-85℃ 9V-36V 50PPM GP8212ASL-TC50-EW CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. Linearin and designs are registered trademarks of Linearin Technology Corporation. © Copyright Linearin Technology Corporation. All Rights Reserved. All other trademarks mentioned are the property of their respective owners. FN1601-74.1 — Data Sheet GP8212ASL DAC (Digital to Analog Converter) 15bitDAC I2C to 4-20mA/0-20mA 8. 封装信息 ESOP10 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. Linearin and designs are registered trademarks of Linearin Technology Corporation. © Copyright Linearin Technology Corporation. All Rights Reserved. All other trademarks mentioned are the property of their respective owners. FN1601-74.1 — Data Sheet P-9 GP8212ASL DAC (Digital to Analog Converter) 15bitDAC I2C to 4-20mA/0-20mA