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AN-1282
APPLICATION NOTE
One Technology Way • P. O. Box 9106 • Norwood, MA 02062-9106, U.S.A. • Tel: 781.329.4700 • Fax: 781.461.3113 • www.analog.com
Profiling the ADuCM350 Supply Current in an Example Application
by Eoghan Moloney and Vinod Bableshwar
INTRODUCTION
The ADuCM350 is an ultralow power, integrated mixed signal
metering solution that includes a microcontroller subsystem for
processing, control, and connectivity. The processor subsystem
is based on a low power ARM Cortex™-M3 processor, a collection
of digital peripherals, embedded static random access memory
(SRAM) and flash memory, and an analog subsystem that
provides clocking, reset, and power management capabilities.
The ADuCM350 is specifically designed for high precision
analysis of electrochemical reactions.
This application note demonstrates an example application of
the low power features on the ADuCM350 and facilitates typical
in-application supply current measurements.
Figure 1. ADuCM350 System Block Diagram
PLL
1 × 256kB
1 × 128kB
FLASH
PDI
AFE
• 16-BIT PRECISION ADC
• PRECISION REFERENCE
• SWITCH MATRIX
• 12-BIT DAC
• IN-AMP CONTROL LOOP
• TIA
SIGNAL
GENERATION
DFT
RECEIVE
FILTERS
SW/JTAG
CORTEX -
M3
NVIC TRACE
LF XTAL
HF XTAL
HF OSC
LF OSC
USB PHY
DMA
AFE
CONTROLLER
USB
CAP TOUCH
AHB-APB
BRIDGE
UART
I
2
S
SPI0
LCD
SPI1
GPIO
I
2
C
CRC
TMR0
TMR2
TMR1
WDT
PMU
RTC
BEEP
MISC
16kB
EEPROM
SRAM0
(16kB)
HP LDO
POR
SPIH
LP LDO
PSM
SRAM1
(16kB)
12007-001
APB-0
APB-1
AMBA
BUS
MATRIX
Rev. 0 | Page 1 of 12
