AD7873 - Brand New Analog Devices Touch Screen Controllers
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Description
The AD7873 is a fast, complete, 12-bit A/D converter that belongs to the category of Touch Screen Controllers. It consists of a track/hold amplifier, 8 µs successive approximation ADC, 3 V buried Zener reference, and versatile interface logic. The ADC features a self-contained internal clock which is laser trimmed to guarantee accurate control of conversion time. No external clock timing components are required; the on-chip clock may be overridden by an external clock if required. The AD7873 offers a choice of three data output formats: a single, parallel, 12-bit word; two 8-bit bytes or serial data. With fast bus access times and standard control inputs, it ensures easy interfacing to modern microprocessors and digital signal processors.
Specifications and features
- Complete Monolithic 12-Bit ADC with:
- 2 ms Track/Hold Amplifier
- 8 ms A/D Converter
- On-Chip Reference
- Laser-Trimmed Clock
- Parallel, Byte and Serial Digital Interface
- 72 dB SNR at 10 kHz Input Frequency (AD7870, AD7875)
- 57 ns Data Access Time
- Low Power: –60 mW typ
- Variety of Input Ranges:
- ±63 V for AD7870
- 0 V to ±5 V for AD7875
- ±610 V for AD7876
Application Scenarios
The AD7873 is widely used in applications that require fast and accurate analog to digital conversion. Its versatile interface logic and variety of input ranges make it suitable for various situations. It is commonly used in touch screen controllers for consumer electronic devices such as smartphones, tablets, and automotive infotainment systems.
Comparison
Advantages- Fast conversion time with a self-contained internal clock
- Versatile interface logic for easy interfacing with modern microprocessors and digital signal processors
- Variety of input ranges to suit different applications
Disadvantages- Requires external clock if precise control of conversion time is needed
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Datasheet
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Shopping guide
Delivery period:
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Popular parts of the same kind
- Datasheet: Download AD7873
- Chipdatas Part: CD94-AD7873
- Warehouse: China, Hong Kong
- Dispatch: Within 24 hours
- Free Shipping: Yes
- Prority Shipping: Yes, 3-5 days
- Last Updated: 2024/06/12 14:15 +0800
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- Full Refund if you don't receive your order
- Full or Partial Refund , If the item is not as described
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