MCP3914
The MCP3914 is a 3V eight-channel Analog Front End(AFE, containing eight synchronous sampling delta-sigma ADCs, eight PGAs, phase delay compensation block, low-drift internal voltage reference, digital offset and gain error
calibration registers, and high-speed 20 MHz SPI compatible serial interface.
The MCP3914 ADCs are fully configurable, with features such as: 16/24-bit resolution, Oversampling Ratio (OSR) from 32 to 4096, gain from 1x to 32x, independent Shutdown and Reset, dithering and auto-zeroing.
The MCP3914 includes advanced security features to secure the communications and the configuration settings, such as a CRC-16 checksum on both serial data outputs and static register map configuration. It also includes a register-map lock through an 8-bit secure key to stop unwanted write commands from processing.
The MCP3914 is capable of interfacing with a variety of voltage and current sensors, including shunts, current transformers, Rogowski coils and Hall-effect sensors.
Features- Eight Synchronous Sampling 24-bit Delta-Sigma ADCs
- 94.5 dB SINAD, -107 dBc Total Harmonic Distortion (THD) (up to 35th Harmonic), 112 dBFS SFDR for Each Channel
- Enables 0.1% Typical Active Power Measurement Error over a 10,000:1 Dynamic Range
- Advanced Security Features: - 16-bit Cyclic Redundancy Check (CRC) checksum - 16-bit CRC checksum and interrupt alert for register map configuration - Register map lock with 8-bit secure key
- Programmable Data Rate up to 125 ksps
- Oversampling Ratio up to 4096
- Ultra-Low Power Shutdown Mode with < 10 µA
- -122 dB Crosstalk between Channels
- Differential Voltage Reference Input Pins
- High Gain Programmable-Gain Amplifier (PGA) on Each Channel (up to 32 V/V)
- Phase Delay Compensation with 1 µs Time Resolution
- Separate Data Ready Pin for Easy Synchronization
- Individual 24-bit Digital Offset and Gain Error Correction for Each Channel
- High-Speed 20 MHz Serial Peripheral Interface (SPI) with Mode 0,0 and 1,1 Compatibility
- Continuous Read/Write Modes for Minimum Communication Time
- Available in a 40-lead UQFN Package
| Parameter|
Parameter Name
Value
| Value | |
Measurement Error
0.1%
|
0.1%
| |
Dynamic Range
10000:1
|
10000:1
| |
Voltage Reference Drift ppm typ
9
|
9
| |
PSRR % typ
-73 dB
|
-73 dB
| |
Temp. Range (°C)
-40 to 125
|
-40 to 125
| |
Analog Supply Voltage AVdd Range (V)
2.7 to 3.6
|
2.7 to 3.6
| |
Digital Supply Voltage DVdd Range (V)
2.7 to 3.6
|
2.7 to 3.6
|
|
Documents
Ordering Information
| Part Number | Leads | Package Type | Temp Range | Packing | 1+ | 26+ | 100+ | 1000+ | 5000+ |
|---|
| MCP3914A1-E/MV | 40 | UQFN | -40C to +125C | TUBE | 5.20 | 4.34 | 3.94 | 3.81 | 3.76 |
| MCP3914A1T-E/MV | 40 | UQFN | -40C to +125C | T/R | 5.20 | 4.34 | 3.94 | 3.81 | 3.76 |
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RoHS Information
| PartNumber | DeviceWeight | ShippingWeight | LeadCount | PackageType | PackageWidth | SolderComposition | JEDECIndicator | RoHS | ChinaEFUP |
|---|
| MCP3914A1-E/MV | 0.042500 | 0.109589 | 40 | UQFN | 5x5x0.5mm | Matte Tin | e3 |  |  |
| MCP3914A1T-E/MV | 0.042500 | 0.166970 | 40 | UQFN | 5x5x0.5mm | Matte Tin | e3 | | |
