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主要特征
应用/用途
Parametric specs for Display-Oriented ADCs
| Resolution (±Counts) | 2000 |
| # Input Channels | 1 |
| Conv. Rate (ksps) (max) | 0.0025 |
| Data Bus | 7-Segment |
| Diff/S.E. Input | Diff. Only |
| Internal VREF (V) (nominal) | 3 |
| External VREF (V) (min) | -5 |
| External VREF (V) (max) | 5 |
| Bipolar VIN (±V) (max) | 0.2 |
| Package/Pins | MQFP/44 PDIP/40 |
| Budgetary Price (See Notes) | 5.64 |
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简化框图
技术文档
| 数据资料 | 低功耗、3 1/2位A/D转换器 | May 28, 1999 | |
| 设计指南 | Understanding Integrating ADCs | ||
| 设计指南 | Understanding Integrating ADCs | ||
| 设计指南 | Understanding Integrating ADCs |
参量
Parametric specs for Display-Oriented ADCs
| Resolution (±Counts) | 2000 |
| # Input Channels | 1 |
| Conv. Rate (ksps) (max) | 0.0025 |
| Data Bus | 7-Segment |
| Diff/S.E. Input | Diff. Only |
| Internal VREF (V) (nominal) | 3 |
| External VREF (V) (min) | -5 |
| External VREF (V) (max) | 5 |
| Bipolar VIN (±V) (max) | 0.2 |
| Package/Pins | MQFP/44 PDIP/40 |
| Budgetary Price (See Notes) | 5.64 |
主要特征
- Improved 2nd Source!
- Guaranteed first reading recovery from overrange
- Zero Input Gives Zero Reading
- Drives LED Displays Directly
- Low Noise (15μV p-p) without hysteresis or overrange hangover
- True Differential Reference and Input
- Monolithic, Low Power CMOS Design
应用/用途
- Conductance
- Current
- Material Thickness
- Pressure
- Resistance
- Speed
- Temperature
- Voltage
描述
The Maxim ICL7137 is a monolithic analog to digital converter with all the necessary active devices to directly interface with a light emitting diode (LED) display. Excluding the LED display current, the ICL7137 supply current is under 200μA, making it suitable for battery operation.
Versatility and accuracy are inherent features of this converter. The dual-slope conversion technique automatically rejects interference signals common in industrial environments. The true differential input and reference are particularly useful when making ratiometric measurements (ohms or bridge transducers), and the zero integrator phase in Maxim's ICL7137 eliminates overrange hangover and hysteresis effects. Finally, this device offers high accuracy by lowering rollover error to less than one count and zero reading drift to less than 1μV/°C.
Versatility and accuracy are inherent features of this converter. The dual-slope conversion technique automatically rejects interference signals common in industrial environments. The true differential input and reference are particularly useful when making ratiometric measurements (ohms or bridge transducers), and the zero integrator phase in Maxim's ICL7137 eliminates overrange hangover and hysteresis effects. Finally, this device offers high accuracy by lowering rollover error to less than one count and zero reading drift to less than 1μV/°C.
技术文档
| 数据资料 | 低功耗、3 1/2位A/D转换器 | May 28, 1999 | |
| 设计指南 | Understanding Integrating ADCs | ||
| 设计指南 | Understanding Integrating ADCs | ||
| 设计指南 | Understanding Integrating ADCs |
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