MCP3421
18-Bit Analog-to-Digital Converter
with I2C Interface and On-Board Reference
Features Description 18-bit О”ОЈ ADC in a SOT-23-6 package Differential Input Operation Self Calibration of Internal Offset and Gain Per
Each Conversion On-Board Voltage Reference:
-Accuracy: 2.048V В± 0.05%
-Drift: 15 ppm/В°C On-Board Programmable Gain Amplifier (PGA):
-Gains of 1,2, 4 or 8 On-Board Oscillator INL: 10 ppm of FSR (FSR = 4.096V/PGA) Programmable Data Rate Options:
-3.75 SPS (18 bits)
-15 SPS (16 bits)
-60 SPS (14 bits)
-240 SPS (12 bits) One-Shot or Continuous Conversion Options Low Current Consumption:
-145 ВµA typical
(VDD= 3V, Continuous Conversion)
-39 ВµA typical
(VDD= 3V, One-Shot Conversion with 1 SPS) Supports I2C Serial Interface:
-Standard, Fast and High Speed Modes Single Supply Operation: 2.7V to 5.5V Extended Temperature Range: -40В°C to +125В°C The MCP3421 is a single channel low-noise, high
accuracy О”ОЈ A/D converter with differential inputs and
up to 18 bits of resolution in a small SOT-23-6 package.
The on-board precision 2.048V reference voltage
enables an input range of В±2.048V differentially
(О” voltage = 4.096V). The device uses a two-wire I2C
compatible serial interface and operates from a single …