PGA305
- Analog features:
- Analog front-end for resistive bridge sensors
- Accommodates sensor sensitivities from 1mV/V to 135mV/V
- On-chip temperature sensor
- Programmable gain
- 24-bit sigma-delta analog-to-digital converter for signal channel
- 24-bit sigma-delta analog-to-digital converter for temperature channel
- 14-bit output DAC
- Digital features:
- FSO accuracy across temperature: < 0.1%
- System response time: < 220µs
- Third-order offset, gain, and nonlinearity temperature compensation
- Diagnostic functions
- Integrated EEPROM for device operation, calibration data and user data
- Peripheral features:
- I2C interface for data reading and device configuration
- One-wire interface enables communication through the power supply pin without using additional lines
- Current loop interface: 4mA to 20mA
- Ratiometric and absolute voltage output
- Power management control
- Analog low-voltage detect
- General features:
- Industrial temperature range: –40°C to 150°C
- Power supply:
- On-chip power management accepts wide power-supply voltage from 3.3V to 30V
- Integrated reverse-protection circuit
The PGA305 device supplies an interface for piezoresistive and strain-gauge pressure-sense elements. The device is a full system-on-chip (SoC) solution that includes programmable analog front end (AFE), ADC, and digital signal processing that enable direct connection to the sense element. The PGA305 device also includes integrated voltage regulators and an oscillator to minimize the number of external components. The PGA305 device can employ third-order temperature and nonlinearity compensation to achieve high accuracy. The device can also use the integrated I2C interface or the one-wire serial interface (OWI) to achieve external communication and simplify the system calibration process. An Integrated DAC supports absolute-voltage, ratiometric-voltage, and 4mA to 20mA current-loop outputs.
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技術文件
| 重要文件 | 類型 | 標題 | 格式選項 | 下載最新的英文版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 資料表 | PGA305 Signal Conditioner and Transmitter for Pressure Sensors datasheet | PDF | HTML | 2024/8/14 | ||
| Application brief | PGA900, PGA300 and PGA305 Use Case for the Pressure Transmitter Applications | 2017/5/2 | ||||
| Application brief | PGA900, PGA300 and PGA305 Use Case for HVAC Applications | 2017/5/2 | ||||
| Application brief | PGA900, PGA300 and PGA305 Use Case for Weight Scale (Load Cell) Applications | 2017/5/1 |
設計與開發
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PGA3XX-COEFF-CALC — Temperature and nonlinearity coefficient calculator for the PGA300 and PGA305
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| VQFN (RHH) | 36 | Ultra Librarian |
訂購與品質
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