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MCP3918

Status: In Production

Features:

  • 16/24-bit Resolution Delta-Sigma A/D Converter
  • Flexible serial interface that includes both SPI and a simple 2-wire interface ideal for polyphase shunt energy meters
  • 93.5 dB SINAD, -106.5 dBc THD
  • 2.7V - 3.6V AVDD, DVDD
  • Programmable Data Rate up to 125 ksps- 4 MHz Maximum Sampling Frequency
  • Oversampling Ratio up to 4096
  • Ultra Low Power Shutdown Mode with <2 µA
  • Low Drift 1.2V Internal Voltage Reference: 9 ppm/°C
  • Differential Voltage Reference Input Pins
  • High Gain PGA on Each Channel (up to 32V/V)
  • Phase Delay Compensation with 1 µs Time Resolution
  • Separate Data Ready Pin for Easy Synchronization
  • 24-bit Digital Offset and Gain Error Correction
  • High-Speed 20 MHz SPI Interface with Mode 0,0 and 1,1 Compatibility
  • Continuous Read/Write Modes for Minimum Communication
  • Low Power Consumption
  • Available in Small 20-lead QFN and SSOP Packages
  • Specifications valid down to -45°C operation
  • AEC-Q100 Grade 1
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Overview
Documents
Development Environment
Similar Devices
RoHS Information
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Device Overview

Summary

The MCP3918 is a 2.7V to 3.6V single channel Analog Front End (AFE) containing a Delta-Sigma Analog-to-Digital Converter (ADC), PGA, internal voltage
reference, modulator output block, and highspeed 20 MHz SPI compatible serial interface. For polyphase shunt based energy meters, the MCP3918 2-wire serial
interface greatly reduces system cost requiring only a single bidirectional isolator per phase. The MCP3918 is capable of interfacing a large variety of voltage and current sensors including shunts, current transformers, Rogowski coils and Hall effect sensors

Additional Features
    • 16/24-bit Resolution Delta-Sigma A/D Converter
    • Flexible serial interface that includes both SPI and a simple 2-wire interface ideal for polyphase shunt energy meters
    • 93.5 dB SINAD, -106.5 dBc THD
    • 2.7V - 3.6V AVDD, DVDD
    • Programmable Data Rate up to 125 ksps- 4 MHz Maximum Sampling Frequency
    • Oversampling Ratio up to 4096
    • Ultra Low Power Shutdown Mode with <2 µA
    • Low Drift 1.2V Internal Voltage Reference: 9 ppm/°C
    • Differential Voltage Reference Input Pins
    • High Gain PGA on Each Channel (up to 32V/V)
    • Phase Delay Compensation with 1 µs Time Resolution
    • Separate Data Ready Pin for Easy Synchronization
    • 24-bit Digital Offset and Gain Error Correction
    • High-Speed 20 MHz SPI Interface with Mode 0,0 and 1,1 Compatibility
    • Continuous Read/Write Modes for Minimum Communication
    • Low Power Consumption
    • Available in Small 20-lead QFN and SSOP Packages
    • Specifications valid down to -45°C operation
    • AEC-Q100 Grade 1
Parametrics
Name
Value
Measurement Error
0.1%
Dynamic Range
10000:1
Gain Selection
1:32
Voltage Reference Drift Typical (ppm/°C)
9
PSRR % typ
-73 dB
ADC Resolution (bits)
24
# of Channels
1
Power Type
Single-Phase Poly-Phase
Device Type
Analog-Front-End
Interface
SPI/2-Wire
Operating Voltage (V)
2.7 - 3.6
Temperature Range (°C)
-40 to 125

Documents

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RoHS Information

Part Number
Device Weight (g)
Shipping Weight (grams)
Lead Count
Package Type
Package Width
Solder Composition
JEDEC Indicator
RoHS
China EFUP
MCP3918A1-E/ML
0.043100
0.076923
20
QFN
4x4x0.9mm
Matte Tin
e3
MCP3918A1T-E/ML
0.043100
0.212121
20
QFN
4x4x0.9mm
Matte Tin
e3
MCP3918A1-E/SS
0.164200
0.343284
20
SSOP
.209in
Matte Tin
e3
MCP3918A1-E/SSVAO
0.164200
0.343284
20
SSOP
.209in
Matte Tin
e3
MCP3918A1T-E/SS
0.164200
0.416250
20
SSOP
.209in
Matte Tin
e3
MCP3918A1T-E/SSVAO
0.164200
0.416250
20
SSOP
.209in
Matte Tin
e3
To see a complete listing of RoHS data for this device, please Click here
Shipping Weight = Device Weight + Packing Material weight. Please contact sales office if device weight is not available.

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