参数资料
型号: PGA309EVM
厂商: Texas Instruments, Inc.
英文描述: PGA309 Evaluation Module(PGA309评估模块)
中文描述: PGA309评估模块(PGA309评估模块)
文件页数: 49/53页
文件大小: 4221K
代理商: PGA309EVM
10.2 4-Wire Sensor Modules and One-Wire Interface (PRG):
When using the PGA309 in a 4-Wire (V
S
, PRG, V
OUT
, GND) Sensor Module Application, as shown in Figure
45, there is an optimum way to deal with the PRG pin. For minimum component count you can put the
required pull-up resistor, Rp, for One-Wire (PRG) communication on the PGA309 PC Interface Board. After
Sensor Calibration is complete a final write to the EEPROM is done. During this final write to the EEPROM
the PGA309 One-Wire interface, PRG pin, can be configured to be disabled. This means that it can now float
without any adverse consequences such as high current draw through V
S
or erroneous digital communication
due to transients on the PRG pin.
To disable the One-Wire Interface set the OWD bit to ‘1’ during the final EEPROM program write. The OWD
(One Wire Disable) bit is located in Register 4 [Bit15]. After this “final” programming all is not lost, as any
power-up sequence will allow the One-Wire Interface (PRG pin) control, if communication is initiated within
25ms of the application of power to the PGA309.
Page 49 of 53
Figure 45: PGA309 4-Wire Sensor Module Application
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相关代理商/技术参数
参数描述
PGA309EVM-EU 功能描述:光学传感器开发工具 PGA309 Eval Mod- Wldwide RoHS:否 制造商:ams 工具用于评估: 接口类型: 最大工作温度:
PGA309EVM-US 功能描述:光学传感器开发工具 PGA309 Eval Mod- US & Canada RoHS:否 制造商:ams 工具用于评估: 接口类型: 最大工作温度:
PGA309EVM-USB 功能描述:放大器 IC 开发工具 PGA309 Eval Mod RoHS:否 制造商:International Rectifier 产品:Demonstration Boards 类型:Power Amplifiers 工具用于评估:IR4302 工作电源电压:13 V to 23 V
PGA309EVM-USB 制造商:Texas Instruments 功能描述:ANALOG SIGNAL CONDITIONING EVAL. MODULE
PGA309-HT 制造商:TI 制造商全称:Texas Instruments 功能描述:VOLTAGE OUTPUT PROGRAMMABLE SENSOR CONDITIONER