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PDF ADuCM350 Data sheet ( Hoja de datos )
| Número de pieza | ADuCM350 | |
| Descripción | Low Power Meter On A Chip | |
| Fabricantes | Analog Devices | |
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Data Sheet
16-Bit Precision, Low Power Meter On A
Chip with Cortex-M3 and Connectivity
ADuCM350
FEATURES
Analog performance
160 kSPS, 16-bit, precision analog-to-digital converter (ADC)
4 dedicated voltage measurement channels
8 current measurement channels
Impedance measurement engine
High precision voltage reference
Supply noise rejection filtering
Ultralow leakage configurable switch matrix
12-bit digital-to-analog converter (DAC)
Precision instrumentation amplifier control loop
6-channel CapTouch controller
Temperature sensor
Analog hardware accelerators
Autonomous analog front-end (AFE) controller
Independent sequencer for AFE functions
Direct digital synthesizer (DDS)/arbitrary waveform
generator
Receive filters
Complex impedance measurement (DFT) engine
Processing
16 MHz ARM Cortex-M3 processor
384 kB of embedded flash memory
32 kB system SRAM
16 kB Flash configured EEPROM
Integrated full-speed USB 2.0 controller and PHY
Multilayer advanced microcontroller bus architecture
(AMBA) bus matrix
Central direct memory access (DMA) controller
Real-time clock (RTC)
General-purpose, wake-up, and watchdog timers
Communication
Input/output
I2S and beeper interface
LCD display controller (parallel and serial)
LCD segment controller
SPI, I2C, and UART peripheral interfaces
Programmable GPIOs
Power
Coin cell battery compatible
2.5 V to 3.6 V active measurement range
Power management unit (PMU)
Power-on reset (POR) and power supply monitor (PSM)
Packages and temperature range
Operating temperature range: −40°C to +85°C
Package: 120-lead, 8 mm × 8 mm CSP_BGA
APPLICATIONS
Point-of-care diagnostics
Body-worn devices for monitoring vital signs
Amperometric, voltametric, and impedometric measurements
FUNCTIONAL BLOCK DIAGRAM
PLL
LF XTAL
HF XTAL
SW/JTAG
ARM
CORTEX-M3
HF OSC
LF OSC
NVIC TRACE
AFE
● 16-BIT PRECISION ADC
● PRECISION REFERENCE
● SWITCH MATRIX
● 12-BIT DAC
● IN-AMP CONTROL LOOP
● TIA
SIGNAL
GENERATION
DFT
RECEIVE
FILTERS
DMA
AFE
CONTROLLER
USB PHY
USB
CapTouch
AMBA
BUS
MATRIX
1 × 256kB
1 × 128kB
FLASH
16kB
EEPROM
SRAM0
(16kB)
SRAM1
(16kB)
PDI
SPIH
POR
PSM
LP LDO
HP LDO
UART
I2S
SPI0
SPI1
I2C
ABP‐0
LCD
GPIO
CRC
Figure 1.
AHB‐APB
BRIDGE
TMR0
TMR2
TMR1
PMU
ABP‐1
WDT
RTC
BEEP
MISC
Rev. A
Document Feedback
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
©2014 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com
1 page  
ADuCM350
Data Sheet
SPECIFICATIONS
All characterization is at VCCM = 2.5 V to 3.6 V, specifications below 2.5 V are for functionality only, all minimum and maximum
specifications are specified for a temperature range of −40°C to +85°C, unless otherwise noted.
ANALOG FRONT-END SPECIFICATIONS
AFE LDO Specifications
Table 1. AFE LDO Specifications
Parameter
Min Typ
VOLTAGE
Output Voltage
1.71 1.8
Max
1.89
Dropout
REGULATION
Line
Load
POWER UP
Power-Up Time
150 200
1080
0.65
500
Unit
V
mV
µV/V
mV/mA
µs
Test Conditions/Comments
Measured with a load capacitance (CLOAD) = 0.47 µF; measured with 1 mA
load current on AVDD_RX/TX; all AFE blocks powered down
10 mA load applied; no AFE blocks enabled
10 mA load applied
10 mA load applied
Measured with a CLOAD = 0.47 µF; current limit enabled
High Precision Internal Reference Specifications
Table 2. High Precision Internal Reference Specifications
Parameter
Min Typ
ADC VREF
Reference Voltage Initial Accuracy1
1.797
1.8
1.79 1.8
Output Impedance
Max
1.803
1.803
570
Temperature Coefficient2
−52
+90
−45 +48
VREF Thermal Hysteresis
REF_EXCITE Switching Load
Line Regulation
Short-Circuit Current to Ground
DAC VREF
Reference Voltage
VBIAS
VBIAS Voltage
1.789
1.77
1.095
50
1.793
50
10
1.8
1.1
1.797
1.83
1.102
1 Reference voltage is trimmed unloaded. Measured with CLOAD = 4.7 µF. Measured at 25°C.
2 Guaranteed by design and/or characterization.
Unit
V
V
mΩ
ppm/°C
ppm/°C
ppm
V
µV/V
mA
V
V
Test Conditions/Comments
For a temperature range of 0°C to 50°C
For a temperature range of −40°C to +85°C
LDO and reference enabled; all other AFE
blocks disabled; reference loaded with
50 µA on VREF
For a temperature range of −40°C to
+85°C, maximum value from −40°C to
+25°C, and from +25°C to +85°C specified
For a temperature range of 0°C to 50°C,
maximum value from −40°C to +25°C, and
from 25°C to 85°C specified
ILOAD = 200 µA; internal ADC measurement
VCCM1 = 2.5 V, VCCM2 = 3.6 V; reference
loaded with 300 µA
Current limit off
Measured with a CLOAD = 0.47 µF; no
current load
Rev. A | Page 4 of 40
5 Page 
ADuCM350
Data Sheet
LCD, Charge Pump
Table 18. LCD, Charge Pump Specifications
Parameter
Min Typ Max Unit Test Conditions/Comments
CAPACITANCE
Reservoir Capacitance Between
VLCDVDD and VLCD_GND
0.47
1
µF
Flying Capacitance
2.2
4.7 nF Between VLCD FLY1 and VLCD FLY2
VLCD
Switching Voltage
VLCD FLY1
−0.7 VLCD + 0.2 V Top of flying capacitor
VLCD FLY2
0
VCCM
V Bottom of flying capacitor
VLCD Charge Pump Switching
Frequency
32 kHz
Minimum VLCD with Respect to
VCCM_ANA and VCCM_DIG
2.1
V When <2.1 V after 62.5 ms elapses indicates
fault condition
VLCDVDD
VLCDVDD Voltage Range
2.4
3.65 V 5-bit programmable in steps of 40 mV
VLCDVDD Pin Leakage
3 nA To VCCM
0.2 nA To GND
VLCDVDD Start-Up Time
5 ms VLCDVDD = 0 V to 3.6 V, reservoir = 1 µF,
flying capacitor = 2.2 nF (minimum) and
4.7 nF (maximum)
VLCDVDD Line Regulation
0.32 %
V_LCD_xx VOLTAGE RANGE
V_LCD_13 Voltage Range
VLCD ÷ 3 − 10
VLCD ÷ 3 + 10 mV
V_LCD_23 Voltage Range
2/3 VLCD − 13
2/3 VLCD + 13 mV
COMx PINS
DC Voltage Across Segment and
COMx Pins
50 mV
PIN OUTPUT IMPEDANCE
Segment
2000
Ω
Common
130 Ω
SYSTEM CLOCKS/TIMERS
The following tables document the system clock specifications in the ADuCM350.
Platform External Crystal Oscillator
Table 19. Platform External Crystal Oscillator Specifications
Parameter
Min Typ
LOW FREQUENCY
CEXT1 = CEXT2
12 15
Max
18
Unit
pF
Frequency
HIGH FREQUENCY
CEXT1 = CEXT2
Frequency
32,768
Hz
10 12 15 pF
8 or 16
MHz
Test Conditions/Comments
External capacitor, C1 = C2 (symmetrical
load)
External capacitor
Rev. A | Page 10 of 40
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet ADuCM350.PDF ] | |
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