MCP3423

The MCP3423 is a two channel low-noise, high accuracy delta-sigma A/D converter with differential inputs and up to 18 bits of resolution. The on-board precision 2.048V reference voltage enables an input range of ±2.048V differentially. The device uses a two-wire IC™ compatible serial interface and operates from a single power supply ranging from 2.7V to 5.5V. The MCP3423 device performs conversions at rates of 3.75, 15, 60 or 240 samples per second depending on user controllable configuration bit settings using the two-wire I2C Compatible compatible serial interface. The IC address is user configurable with two address selection pins. This device has an onboard programmable gain amplifier (PGA). User can select the PGA gain of x1, x2, x4, or x8 before the analog-to-digital conversion takes place. This allows the MCP3423 device to convert a smaller input signal with high resolution. The device has two conversion modes: (a) Continuous mode and (b) One-Shot mode. In One-Shot mode, the device enters a low current standby mode automatically after one conversion. This reduces current consumption greatly during idle periods. The MCP3423 device can be used for various high accuracy analog-to-digital data conversion applications where ease of use, low power consumption and small footprint are major considerations.

产品特性
  • 18-bit resolution
  • 2-channel differential input operation
  • Differential input operation
  • On-board voltage reference with 15 ppm/°C drift
  • On-board PGA, gains of 1, 2, 4, 8
  • Programmable data rate options 3.75 SPS (18 bits) 15 SPS (16 bits) 60 SPS (14 bits) 240 SPS (12 bits)
  • 3.75 SPS (18 bits)
  • 15 SPS (16 bits)
  • 60 SPS (14 bits)
  • 240 SPS (12 bits)
  • INL 10 ppm of FSR max
  • Low current consumption, 135 µA at 3V
  • One-shot or continuous conversion options
  • Supports I2C™ serial interface with user configurable addresses
  • Extended temperature range: -40°C to +125°C
技术参数
Parameter Name Value Value
Typical Supply Current (µA) 145 145
Typical INL (ppm) 10 10
Max Sample Rate (samples/sec) 4 4
Input Type 2 Differential 2 Differential
Interface I²C™ I²C™
Resolution (bits) 18 18
Supply Voltage Range (V) 2.7 to 5.5 2.7 to 5.5
文档资料
MCP3422/3/4 Data SheetData Sheets08/21/20091077KB
AN1156 - Battery Fuel Measurement Using Delta-Sigma ADC DevicesAppNote01/25/2008318KB
Automotive Recommended Product Selector GuideBrochures09/16/20147598KB
Signal Chain Design GuideBrochures11/10/20123229KB
Utility Metering BrochureBrochures10/06/20143370KB
Low Power Analog SolutionsSell Sheets05/16/2011120KB
Analog & Interface Product Selector GuideProduct Line Card03/21/20164116KB
MCP3423 Evaluation Board User's GuideUser Guides11/13/20081004KB
订购型号
Part NumberLeadsPackage TypeTemp RangePacking1+26+100+1000+5000+
MCP3423-E/MF10DFN-40C to +125CTUBE3.112.592.352.272.25
MCP3423-E/UN10MSOP-40C to +125CTUBE3.112.592.352.272.25
MCP3423T-E/MF10DFN-40C to +125CT/R3.112.592.352.272.25
MCP3423T-E/UN10MSOP-40C to +125CT/R3.112.592.352.272.25
相关开发工具
MCP3422/3/4 Data Sheet MCP3424
MCP3422/3/4 Data Sheet MCP3423EV
AN1156 MCP3423
AN1156 Firmware MCP3423
Automotive Recommended Product Selector Guide MCP23S09
Signal Chain Design Guide MCP3901
Utility Metering Brochure SST39WF800B
Low Power Analog Solutions MCP3551
Analog & Interface Product Selector Guide ENC624J600
MCP3423 Evaluation Board User's Guide MCP3423