ADS7845E
Interface for touchscreen devices
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製造商零件號 # : ADS7845E
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包裝/封裝: SSOP-16
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製造商: Texas Instruments
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產品分類 : Touch Screen Controllers
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ADS7845E 數據表
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詳細說明
The ADS7845E is an impressive 12-bit successive approximation analog-to-digital converter (ADC) designed by Texas Instruments. With a lightning-fast sampling rate of 200 kHz, this device is perfect for applications that demand high-speed data acquisition. Boasting eight input channels that can be multiplexed through a single-ended input configuration, the ADS7845E offers flexibility and versatility
主要特徵
- Multichannel analog-to-digital converter solution
- Internal temperature sensor for thermal monitoring
- Supports sample rates up to 200 kHz
應用
- Water treatment
- Wireless networks
- Audio equipment
規格
以下是所選零件的基本參數,涉及零件的特性及其所屬類別。
SAR ADC resolution (Bits) | 12 | SAR sample rate (max) (ksps) | 125 |
Touch panel | 5-Wire | Control interface | SPI |
Vref (int/ext) | External | Rating | Catalog |
Operating temperature range (°C) | -40 to 85 | Analog supply (min) (V) | 2.7 |
Analog supply voltage (max) (V) | 5.25 | I/O supply voltage (min) (V) | 2.7 |
I/O supply voltage (max) (V) | 5.5 | Input type | Differential, Single-ended |
常見問題解答
What is ADS7845E?
The ADS7845E is a 12-bit successive approximation analog-to-digital converter (ADC) designed by Texas Instruments. It is commonly used in applications requiring high-precision analog-to-digital conversion, such as data acquisition systems, industrial automation, and sensor interfaces.
How Does ADS7845E Work?
The ADS7845E works by converting analog input voltages into 12-bit digital representations using a successive approximation technique. It features a built-in sample and hold circuit to capture analog inputs accurately and a serial interface for easy integration into microcontroller-based systems.
How Many Pins does ADS7845E have and What are the Functions of the Pinout Configuration?
The ADS7845E is housed in a 16-pin SOIC (Small Outline Integrated Circuit) package. The pinout configuration includes:
- VCC: Power supply pin.
- GND: Ground pin.
- REF IN/REF OUT: Reference voltage input and reference voltage output pins.
- START: Start conversion input pin.
- CNVST: Convert start input pin.
- DOUT/DRDY: Data output and data ready pins.
- SDI: Serial data input pin.
- SCLK: Serial clock input pin.
What are the Pros and Cons of ADS7845E?
Pros:
- High Resolution: Offers 12-bit resolution for precise analog-to-digital conversion.
- Low Power Consumption: Operates with low power, suitable for battery-powered devices.
- Simple Serial Interface: Utilizes a simple serial interface for easy integration with microcontrollers.
- Built-in Sample and Hold: Includes a built-in sample and hold circuit for accurate signal acquisition.
Cons:
- Limited Features: May not have advanced features such as programmable gain or internal voltage reference.
- Limited Input Channels: Some applications may require more input channels than provided by the ADS7845E.
- External Components: May require additional external components for specific measurement applications.
Are There Any Equivalents/Alternatives to ADS7845E for Recommendation?
- The ADS7825 from Texas Instruments is a 12-bit ADC with similar functionality to the ADS7845E.
- Alternatives to the ADS7845E include the MAX1236 from Maxim Integrated and the MCP3204 from Microchip Technology.
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