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Manufacturer / Brand: AD
Details: 24-Bit Capacitance-to-Digital Converter with Temperature Sensor
Series: AD7747
Quantity Available: Over 30930 pieces

Datasheet for AD7747:

AD7747 datasheet
Price for AD7747
Product Parameters
  • Manufacturer Part Number : AD7747
  • Manufacturer : AD
  • Description : 24-Bit Capacitance-to-Digital Converter with Temperature Sensor
  • Series : AD7747
  • Reference Price : USD 3.84
  • Our Price : We have a better price, contact us by email
  • Product Type : Integrated/Special Purpose A/D Converters
  • Function : Capacitive to Digital & Touch Screen Controllers
  • Current Suggest : Production
  • Status : Production
  • RoHS Status: -
  • Voltage: -
  • Feature: -
  • Package Case: -
  • Temperature Range: -
  • Packing: Reel/Tray/Tube
  • Standard Packing Quantity: -
  • Country of Origin: -
  • Other Part Number : AD7747
  • Shipping methods : DHL FEDEX UPS TNT
  • Delivery Time : Ship within 1 day.
  • Manufacturer Production time : 6-8 weeks (Normally have stocks)
  • Weight : 0.001KG

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Features and Benefits of AD7747
Product Detailed Description for AD7747
The AD7747 is a high-resolution, Σ-Δ capacitance-to-digital converter (CDC). The capacitance to be measured is connected directly to the device inputs. The architecture features inherent high resolution (24-bit no missing codes, up to 19.5-bit effective resolution), high linearity (±0.01%), and high accuracy (±10 fF factory calibrated). The AD7747 capacitance input range is ±8 pF (changing), and it can accept up to 17 pF common-mode capacitance (not changing), which can be balanced by a programmable on-chip digital-to-capacitance converter (CAPDAC).

The AD7747 is designed for single-ended or differential capacitive sensors with one plate connected to ground. For floating (not grounded) capacitive sensors, the AD7745 or AD7746 are recommended.

The part has an on-chip temperature sensor with a resolution of 0.1°C and accuracy of ±2°C. The on-chip voltage reference and the on-chip clock generator eliminate the need for any external components in capacitive sensor applications. The part has a standard voltage input that, together with the differential reference input, allows easy interface to an external temperature sensor, such as an RTD, thermistor, or diode.

The AD7747 has a 2-wire, I2C-compatible serial interface. The part can operate with a single power supply of 2.7 V to 5.25 V. It is specified over the automotive temperature range of −40°C to +125°C and is housed in a 16-lead TSSOP package.

Applications

Automotive, industrial, and medical systems for:

  • Pressure measurement
  • Position sensing
  • Proximity sensing
  • Level sensing
  • Flowmeters
  • Impurity detections
Lifecycle information of AD7747

At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

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