New Fast, High-Accuracy Analog-to-Digital Converter Families
With data rates of up to 153.6 kSPS, the 24-bit and 16-bit ADCs improve system performance in precision applications
The rapidly growing market of high precision applications requires Analog-to-Digital Converters (ADCs) with faster programmable data rates,
higher accuracy and more integrated features to maximize system performance.
To meet these needs, Microchip have introduced a family of compact ADCs that offer high programmable data rates of up to 153.6 kilosamples per second (kSPS).
The 24-bit MCP356x and 16-bit MCP346x delta-sigma ADC families offer faster programmable data rates over similar devices on the market
while providing high accuracy and lower noise performance. Available in a tiny 3 mm x 3 mm UQFN-20 package,
these highly integrated ADCs meet increasing demand for small packaging in space-constrained applications such as portable instrumentation devices.
Most high-resolution delta-sigma ADCs on the market have slower programmable data rates of a few kSPS. The MCP356x and MCP346x families offer a much faster data rate, making the devices ideal for a variety of precision applications that require different data speeds, including industrial process control, factory automation and sensor transducers and transmitters. The ADCs also offer integrated features to eliminate the need for external components and reduce the overall cost of a system, including an internal oscillator, temperature sensor and burnout current source.
“Accuracy is often sacrificed in ADCs that offer high resolution and faster data rates,” said Bryan J. Liddiard, vice president of Microchip’s mixed-signal and linear business unit. “These devices offer much faster programmable speeds while maintaining the high accuracy that precision applications depend on.”
The new families provide 24-bit or 16-bit resolution, two/four/eight single-ended or one/two/four differential channel options, allowing developers to choose the most suitable ADC for their designs. The devices join Microchip’s extensive portfolio of versatile ADCs that meet the needs of a variety of speed, accuracy and power consumption requirements.
Features of the MCP3564 24-bit Delta-Sigma ADC
- Four Differential or Eight Single-Ended Input Channels
- 24-Bit Resolution
- Programmable Data Rate: up to 153.6 kSPS
- Programmable Gain: 0.33X to 64X
- Low Temperature Drift:
- Offset error drift: 4/Gain nV/°C
- Gain error drift: 0.5 ppm/°C
- Low Noise: 90 nVRMS
- Wide Input Voltage range: 0V to AVDD
- Internal Oscillator or External Clock Selection
- Ultra-Low Shutdown Current Consumption <2 µA
- Internal Temperature Sensor
- 20 MHz SPI-Compatible Interface with Mode 0.0 and 1.1
- Extended Temperature Range: -40°C to +125°C
More information on the MCP3564 24-bit Delta-Sigma ADC, can be found on the Microchip website
Microchip MCP3564 product page
Note: The Microchip name and the Microchip logo are registered trademarks of Microchip Technology Incorporated in the U.S.A and other countries. All other trademarks mentioned herein are the property of their respective companies.
The Microchip website address is www.microchip.com
[Reprinted with kind permission from Microchip Corporation - Release Date, 20th June, 2019]