ADUCM362 Datasheet, PDF (1/24 Pages) Analog Devices – At 50 SPS continuous conversion mode

Data Sheet
Low Power, Precision Analog Microcontroller
with Dual Sigma-Delta ADCs, ARM Cortex-M3
ADuCM362/ADuCM363
FEATURES
Pin compatible with the ADuCM360/ADuCM361
Analog input/output
Dual 24-bit ADCs (ADuCM362)
Single 24-bit ADC (ADuCM363)
Programmable ADC output rate (3.5 Hz to 3.906 kHz)
Simultaneous 50 Hz/60 Hz noise rejection
At 50 SPS continuous conversion mode
At 16.67 SPS single conversion mode
Flexible input mux for input channel selection to both ADCs
Two 24-bit multichannel ADCs (ADC0 and ADC1)
6 differential or 12 single-ended input channels
4 internal channels for monitoring DAC, temperature
sensor, IOVDD/4, and AVDD/4 (ADC1 only)
Programmable gain (1 to 128)
Gain of 1 with input buffer on/off supported
RMS noise: 52 nV at 3.53 Hz, 200 nV at 50 Hz
Programmable sensor excitation current sources
On-chip precision voltage reference
Two external reference options supported by both ADCs
Single 12-bit voltage output DAC
NPN mode for 4 mA to 20 mA loop applications
Microcontroller
ARM Cortex-M3 32-bit processor
Serial wire download and debug
Internal watch crystal for wake-up timer
16 MHz oscillator with 8-way programmable divider
Memory
Up to 256 kB Flash/EE memory, 24 kB SRAM
In-circuit debug/download via serial wire and UART
Power supply range: 1.8 V to 3.6 V (maximum)
Power consumption, MCU active mode
Core consumes 290 μA/MHz
Overall system current consumption of 1.0 mA with core
operating at 500 kHz (both ADCs on, input buffers off,
PGA gain of 4, one SPI port on, and all timers on)
Power consumption, power-down mode: 4 μA (wake-up
timer active)
On-chip peripherals
2× UART, I²C, and 2 × SPI serial input/output (I/O)
16-bit pulse-width modulation (PWM) controller
19-pin multifunction GPIO port
2 general-purpose timers
Wake-up timer/watchdog timer
Multichannel DMA and interrupt controller
DMA support for both SPI channels
Package and temperature range
48-lead, 7 mm × 7 mm LFCSP
Specified for −40°C to +125°C operation
Development tools
Low cost QuickStart Development System
Third-party compiler and emulator tool support
Multiple diagnostic functions that support SIL certification
APPLICATIONS
Industrial automation and process control
Intelligent precision sensing systems
4 mA to 20 mA loop-powered smart sensor systems
Medical devices, patient monitoring
Rev. 0
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