AD5940 Datasheet | High Precision Impedance and Electrochemical Front End





(Datasheet) AD5940 Datasheet PDF Download

Part Number AD5940
Description High Precision Impedance and Electrochemical Front End
Manufacture Analog Devices
Total Page 30 Pages
PDF Download Download AD5940 Datasheet PDF

Features: Data Sheet High Precision, Impedance, a nd Electrochemical Front End AD5940/AD5 941 FEATURES Analog input 16-bit, 800 kSPS ADC Voltage, current, and impedanc e measurement capability Internal and e xternal current and voltage channels Ul tralow leakage switch matrix and input mux Input buffers and programmable gain amplifier Voltage DACs Dual output vol tage DAC with an output range of 0.2 V to 2.4 V 12-bit VBIAS0 output to bias p otentiostat 6-bit VZERO0 output to bias TIA Ultra low power: 1 µA 1 high spee d, 12-bit DAC Output range to sensor: 607 mV Programmable gain amplifier on output with gain settings of 2 and 0.05 Amplifiers, accelerators, and referenc es 1 low power, low noise potentiostat amplifier suitable for potentiostat bia s in electrochemical sensing 1 low nois e, low power TIA, suitable for measurin g sensor current output 50 pA to 3 mA r ange Programmable load and gain resisto rs for sensor output Analog hardware ac celerators Digital waveform generator Receive filters Complex imp.

Keywords: AD5940, datasheet, pdf, Analog Devices, High, Precision, Impedance, and, Electrochemical, Front, End, stock, pinout, distributor, price, schematic, inventory, databook, Electronic, Components, Parameters, parts, cross reference, chip, Semiconductor, circuit, Electric, manual, substitute, Equivalent

Data Sheet
High Precision, Impedance, and
Electrochemical Front End
AD5940/AD5941
FEATURES
Analog input
16-bit, 800 kSPS ADC
Voltage, current, and impedance measurement capability
Internal and external current and voltage channels
Ultralow leakage switch matrix and input mux
Input buffers and programmable gain amplifier
Voltage DACs
Dual output voltage DAC with an output range of 0.2 V
to 2.4 V
12-bit VBIAS0 output to bias potentiostat
6-bit VZERO0 output to bias TIA
Ultra low power: 1 µA
1 high speed, 12-bit DAC
Output range to sensor: ±607 mV
Programmable gain amplifier on output with gain
settings of 2 and 0.05
Amplifiers, accelerators, and references
1 low power, low noise potentiostat amplifier suitable for
potentiostat bias in electrochemical sensing
1 low noise, low power TIA, suitable for measuring sensor
current output
50 pA to 3 mA range
Programmable load and gain resistors for sensor output
Analog hardware accelerators
Digital waveform generator
Receive filters
Complex impedance measurement (DFT) engine
1 high speed TIA to handle wide bandwidth input signals
from 0.015 Hz up to 200 kHz
Digital waveform generator for generation of sinusoid and
trapezoid waveforms
2.5 V and 1.82 V internal reference voltage sources
System level power savings
Fast power-up and power-down analog blocks for duty
cycling
Programmable AFE sequencer to minimize workload of
host controller
6 kB SRAM to preprogram AFE sequences
Ultra low power potentiostat channel: 6.5 µA of current
consumption when powered on and all other blocks in
hibernate mode
Smart sensor synchronization and data collection
Cycle accurate control of sensor measurement
Sequencer controlled GPIOs
On-chip peripherals
SPI serial input/output
Wake-up timer
Interrupt controller
Power
2.8 V to 3.6 V supply
1.82 V input/output compliant
Power-on reset
Hibernate mode with low power DAC and potentiostat
amplifier powered up to maintain sensor bias
Package and temperature range
3.6 mm × 4.2 mm, 56-ball WLCSP
7 mm × 7 mm, 48-lead LFCSP
Fully specified for operating temperature range of −40°C
to +85°C
APPLICATIONS
Electrochemical measurements
Electrochemical gas sensors
Potentiostat/amperometric/voltammetry/cyclic
voltammetry
Bioimpedance applications
Skin impedance
Body impedance
Continuous glucose monitoring
Battery impedance
SIMPLIFIED BLOCK DIAGRAM
POTENTIOSTAT:
AMPLIFIER AND DAC
CURRENT
CHANNELS
VOLTAGE
CHANNELS
INTERNAL
CHANNELS
TEMPERATURE
CHANNEL
IMPEDANCE ENGINE
AMPLIFIERS AND DAC
16-BIT
ADC
WAVEFORM
GENERATOR
DFT
ADC FIFO
AND MMR
DIGITAL
FILTERS
DATA FIFO
LDOs
SLEEP/WAKEUP
TIMER
SEQUENCER
VOLTAGE
REFERENCES
GPIOs
INTERRUPTION
GENERATOR
SPI
Figure 1.
Rev. A
Document Feedback
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityisassumedbyAnalogDevicesforitsuse,norforanyinfringementsofpatentsorother
rights of thirdpartiesthatmay result fromits use. Specifications subject tochangewithout notice.
No license is granted by implication or otherwise under any patent or patent rights of Analog
Devices.Trademarks and registered trademarks are the property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
©2019 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com

                    
                    






Index : 0  1  2  3   4  5  6  7   8  9  A  B   C  D  E  F   G  H  I  J   K  L  M  N   O  P  Q  R   S  T  U  V   W  X  Y  Z
@ 2014 :: Datasheetspdf.com :: Semiconductors datasheet search & download site (Privacy Policy & Contact)