Microchip Technology Microchip Technology MCP3428 16-Bit Delta-Sigma-ADCs
Die Microchip Technology MCP3428-Serie umfasst geräuscharme, hochgenaue 16-Bit Delta-Sigma (ΔΣ) Analog-Digital-Wandler (ADCs) mit einer I²C-Schnittstelle und integrierten Referenz. Die MCP3428 ADCs verfügen über vier differentielle Eingangskanäle. Die integrierte 2,048V Referenzspannung ermöglicht einen differentiellen Eingangsbereich von ± 2,048V (Endwertbereich =4,096/PGA). MCP3428 ADCs können Analog-Digital-Umwandlungsergebnisse von 15 (16-Bit-Modus), 60 (14-Bit-Modus) oder 240 (12-Bit-Modus) Raten pro Sekunde ausgeben. Diese Rate basiert auf den vom Benutzer steuerbaren Bit-Konfigurationseinstellungen. Benutzer können die Einstellungen mit der zweidrahtigen seriellen I²C-Schnittstelle vornehmen. Während jeder Umwandlung kalibrieren die MCP3428 ADCs die Offset- und Verstärkungsfehler automatisch. Dadurch werden genaue Umwandlungsergebnisse über Abweichungen bei der Temperatur und Stromversorgung erzielt.The onboard 2.048V reference voltage enables an input range of ±2.048V differentially (full-scale range =4.096/PGA). These devices can output analog-to-digital conversion results with rates of 15 (16-bit mode), 60 (14-bit mode), or 240 (12-bit mode) Samples per Second (SPS). The rate is based on the user-controllable configuration bit settings. Users can specify the settings with the two-wire I2C serial interface. During each conversion, these Analog-to-Digital Converters calibrate offset and gain errors automatically. This provides accurate conversion results from conversion to conversion over variations in temperature and power supply fluctuations.
The MCP3426 is available in 8-pin SOIC, DFN, and MSOP packages. The MCP3427 is available in 10-pin DFN and MSOP packages. The MCP3428 is available in 14-pin SOIC and TSSOP packages.
Merkmale
- 16-Bit Resolution with Differential Inputs
- 2 Channel MCP3426 and MCP3427
- 4 Channel MCP3428
- On-Board Voltage Reference (VREF)
- Accuracy 2.048V ± 0.05%
- Drift 15 ppm/°C
- On-Board Programmable Gain Amplifier (PGA) Gains of 1, 2, 4, 8
- Programmable Data Rate Options
- 15 SPS (16-Bits)
- 60 SPS (14-Bits)
- 240 SPS (12-Bits)
- 10ppm of Full-Scale Range (FSR)
- One-Shot or Continuous Conversion Options
- Typical Current Consumption (VDD = 3V)
- Continous Conversion 135µA
- One-Shot Conversion with 1 SPS
- 16-Bit Mode 9.0µA
- 14-Bit Mode 2.25µA
- 12-Bit Mode 0.56µA
- One-Shot or Continuous Conversion Options
- I2C Interface
- Standard (100kHz), Fast (400kHz), and High Speed (3.4MHz) Modes
- User Configurable Two External Address Selection Pins for MCP3427 and MCP3428
- Single Supply Operation 2.7V to 5.5V
- Extended Temperature Range -40°C to +125°C
Applikationen
- Weigh Scales and Battery Fuel Gauges
- Portable Instrumentation
- Temperature Sensing with Resistance Temperature Detectors (RTDs), Thermistors, and Thermocouples
- Consumer Goods
- Bridge Sensing for Pressure, Strain, and Force
- Factory Automation Equipment
MCP3426 Block Diagram
MCP3427 Block Diagram
MCP3428 Block Diagram
Package Options
