st offering in wearable analog mixed signal v2

ST offering in Wearable
Analog and Mixed Signal Portfolio
March 2014
Wearable devices attributes
Devices being worn for an extended period of time
with the user experience significantly enhanced as a result
Always on
Environment aware
Low power
Intelligent
Compact
Connected
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Market and Applications
• Fitness and Wellness – monitor activity and emotions
• Activity monitors, foot pods and pedometers, sleep sensors, heart rate monitors
• Emotional measurement
• Smart clothing, smart watches, heads-up displays
• Healthcare and Medical – monitor vital signs
• Blood pressure monitors, ECG monitors, continuous glucose monitoring
• Insulin pumps, drug delivery products
• Infotainment – entertain and enhance lifestyle
• Headsets
• Smart glasses, smart watches
• Industrial – receive/transmit real-time data
• Hand-worn terminals, heads-up displays, smart clothing, wearable detection
devices
3
ST Offering for Wearable
The only company to offer a complete smart system
Sensors
Secure microcontrollers
and memories
Ultra-low power
connectivity
Analog and mixed
signal components
Smart energy management
4
ST Analog and Mixed signal portfolio
for wearable devices
The most complete set of building blocks for wearable devices
Operational amplifiers
Smart reset
Analog switches
Large portfolio of highly powerefficient op amp in tiny
packages
Customizable products
providing safe and convenient
reset
Compact single and dual
switches for audio and USB
Audio amplifiers
BlueNRG
High-efficiency Class D and G
amplifiers for headsets and
speakers
Bluetooth® smart solution
with best-in-class power
consumption
Current sensors
Battery gas gauges
MEMS microphone
High accuracy current
measurement for contactless
battery chargers
Low-power gas gauge providing
very accurate battery life
indicators
Power-efficient microphone
solutions for smarter voicecontrolled devices
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Wearable devices
Analog and mixed signal products partitioning
Digital
sensors
User interface
Audio
amplifiers
Connectivity
BlueNRG
MCU
Operational
amplifiers
Analog
front-end
MCU
Analog
sensors
Power
management
Analog
switches
MEMS
microphones
Battery gas
gauges
Smart reset
Current
sensors
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Solutions for
Analog Front-End
Operational
Amplifiers
Analog Front-End
Analog transducers, getting the best from your sensor
Analog sensors need signal transducers to deliver the
information to the MCU
Analog
sensors
Analog
front-end
MCU
•
Accurate and stable to guarantee the maximum precision of the
information
•
Low power to guarantee a longer user experience
•
Small to be integrated in the most stylish and thin designs
Input offset Input offset
voltage
voltage drift
[µV]
[µV]
ST offers a dedicated set
of op amp to deliver the
best match of current
consumption and precision,
for a wide range of
applications
OAxNP
Supply
current
[µA]
GBP
[kHz]
Supply
voltage
[V]
100
5
0.6
8
1.5 – 5.5
50
10
9
120
1.5 – 5.5
1
0.01
28
400
1.8 – 5.5
Very low power
OAxMPA
Low power
precision
OAxZHA
High precision
zero drift
http://www.st.com/web/en/catalog/sense_power/FM123/SC61
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Analog Front-End
Signal transducers application: electromyography
Analog sensors
Analog front-end
MCU
OAxZHA
Raw input signal
50µVpp-5mVpp
OAxMPA
Conditioned output signal
Input signal envelope
A low input offset voltage with zero drift
amplifier is mandatory. Otherwise the electrodes
information would be less accurate or lost
Once the signal dynamic has been restored
precision and micro power consumption amplifiers
are needed before the signal is fed to the MCU
OAxZHA family is the perfect match offering:
OAxMPA is the perfect match offering:
• VIO= 1μV
• VIO= 50μV
• ΔVIO/ΔT = 0.010μV
• ICC = 9μA
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Analog
switches
Analog Front-End
Switches
SEL
In portable applications, switches are used to route a great
variety of signal – audio to the speaker or the headphones,
or other signal from and towards sensors
SEL
Camera
Mic
•
Guarantee a simple yet efficient system implementation
•
Compatibility with high-speed signals, for USB 2.0 applications
Front
Mic
ST analog switches line up is
meant to cover all the
possible signal typologies
AS11P2TLRQ
Supply
voltage
[V]
Supply
current
[μA]
1.65 - 4.5
0.1 (max)
1.65 - 4.3
0.05
1.65 - 4.3
0.2 (max)
SPDT single
AS21P2TLRQ
from audio to USB, to fit
SPDT dual
most of the applications
AS21P2THBQ
SPDT Dual
Off
isolation
[dB]
X-Talk
[dB]
-75
-80
@ 100Hz
@100Hz
-72
-66
@ 100 Hz
@100 Hz
-78
-78
@ 1 MHz
@1 MHz
http://www.st.com/web/catalog/sense_power/FM1961/SC650
Bandwidth
[MHz]
150
55
800
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Analog Front-End
Switches application: dual mode microphones
MCU
AS11P2TLRQ analog switch can be used to supply
the mic with different voltage level so to enable the
SEL
different operating modes depending on the MCU
Vdd_H
LDO
needs thus enabling voice activity detection features
Vdd_L
LDO
High Supply voltage Vdd_H
Normal mode: the acoustical parameters
are set to the optimal level for voice control applications
Low power voltage Vdd_L
Sniffing mode: the device reduces the power consumption at
minimum whilst guaranteeing an adequate set of performances
for voice activity detection
Vdd_H
Vdd_L
Mic
Output
MIC
output
AS11P2TRLQ
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Solutions for
User Interface
Audio
amplifiers
User Interface
Answering the user
ST offers highly-efficient devices
capable of delivering high quality
audio into small, low power solutions
CLASS G HEADPHONE AMPLIFIER
3W CLASS D MONO SPEAKER AMPLIFIER
A22H165
A22H165M (μ-less)
• Power supply range 2.3 V - 4.8 V
• Low stand by current 0.6 μA
A21SP16J
Low power
Power
Low
• Vout = 0.8 Vrms into 16 Ω,
at 1 % THD+N, VCC = 3.6 V
• Low stand by current <1 μA
• Pout = 0.8 W into 8 Ω,
High Quality
High
quality
• SNR = 100 dB @ 1 kHz
at 10 % THD+N, VCC = 3 V
• SNR = 85 dB @ 1 kHz
• Reduced external BOM
• Flip-chip package
• Power supply range 2.4 V - 5.5 V
• Reduced external BOM
Small size
Small
size
• Small flip-chip package
http://www.st.com/web/catalog/sense_power/FM125/CL1503/SC977
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Solutions for
Power
Management
Battery gas
gauges
Power Management
Intelligent battery monitoring
ST offers an integrated solution combining current integration
and voltage variation over the time thus providing the most
accurate battery status measurement
GG25LJ - Gas gauge IC with alarm output for wearable devices
Accuracy
Robustness
Flexibility
• Coulomb counter mode, voltage mode and mixed mode operations
• 0.25 % accuracy battery voltage monitoring
• Analog and temperature compensation
• Internal temperature sensor
• Low battery level alarm output with programmable thresholds
• Custom battery OCV curve
Low power
• 2 µA in standby, 45 µA in operating
Small size
• Flip chip, 2.01 x 1.37 x 0.6 mm, 10 bumps, 0.4 mm pitch
http://www.st.com/web/catalog/sense_power/FM142/CL848/SC274
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Current
sensors
Power Management
Current sensing
Power management in
wearable devices
Wired or wireless battery chargers
Precision current sources from
sensors
Photovoltaic systems
ST current sensing ICs portfolio
cover most of the application needs
•
Independent supply and common mode voltages
•
Wide supply voltage range
•
Selectable gains
•
Low power solutions
Common mode
operating range
[V]
Supply voltage
range
[V]
Supply
current
[μA]
Gain
[V/V]
CS30
2.8 - 30.0
4.0 - 24.0
165
20. 50, 100
fixed internally
CS70
2.9 - 70.0
-2.1 - 65.0
2.7 - 5.5
200
20, 50, 100
pin selectable
P/N
Independent
VIO and VCC
http://www.st.com/web/en/catalog/sense_power/FM123/SC1264
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Power Management
Current sensing application: wireless battery charging
When swimming water pressure can reach up to 5 atm
Wearable technology needs to be sealed. All the electrical
connections with the external have to be removed
Wireless battery charging is mandatory
High side current sensing through the transmitter coil
to dynamically regulate the charger power output
Half bridge
gate driver
30 V Mosfets
19V
power
source
CS70
Digital
controller
power
communication
Current sensing
Transmitter / Base station
Receiver / Device
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Smart reset
Power Management
Smart resetting
Wearable devices getting smarter, software complexity grows
exponentially
The possibility of and end-user misuse of the product increases
accordingly
Push
simultaneously
to reset
System crashes are likely to happen and it is mandatory to provide
an escape sequence to restart the application and maintain a
perception of quality
ST smart reset IC line up
provide a full set of
SR1
# of
RST
button
# of
PWR
button
Supply
voltage
range [V]
Supply
current
[μA]
RST assertion
time
1
-
2.0 - 5.5
0.4
fixed at factory
2
-
1.65 - 5.5
1.1
fixed at factory
1
1
1.6 - 5.5
0.6
selectable via
ext condenser
Smart reset
functionalities guaranteeing an
escape sequence from OS or
application failures
SR2
Smart reset
SRC0
Smart power
and reset
http://www.st.com/web/en/catalog/sense_power/FM1946/SC1296
http://www.st.com/web/catalog/sense_power/FM1946/SC1753
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Solutions for
Connectivity
BlueNRG
Connectivity
BlueNRG the Bluetooth® SMART solution
Single mode Bluetooth® SMART wireless network processor
• 2.4 GHz RF transceiver
Integration
Flexibility
External MCU
• Cortex-M0 microcontroller
(running the BT single mode protocol)
Application
• AES 128-bit co-processor
BLE profiles
• Master and slave single mode BLE (4.0) network
processor
• On chip non-volatile Flash memory allows OTA
BLE-stack upgrade. Stack qualified
Application controller
interface
BLE network processor
BlueNRG
• ICCRX 7.3 mA
Low power
• ICCTX 8.2 mA @ 0 dBm
• ICCSleep 1.7 µA
Application controller
interface
BLE protocol stack
• ICCShutdown 2.5 nA
Link layer
Small size
• Package: QFN32, 5 x 5 x 1 mm
• Flip-chip
2.4 GHz radio
http://www.st.com/web/catalog/sense_power/FM1968/CL1976/SC1898
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Solutions for
Analog Sensors
MEMS
microphones
MEMS microphones
22
The voice control enablers
Voice control is a wide spreading trend across many portable
applications, making the interaction easier, faster and smoother
It enables fashionable designs by reducing the number of button.
Next microphones trend is to allow dual mode operations:
Normal mode: the acoustical parameters
are set to the optimal level for voice
control applications
ST MEMS Microphones pave
Sniffing mode: the device reduces the
power consumption at minimum whilst
guaranteeing an adequate set of
performances for voice activity detection
Sensitivity
[dBV]
SNR
[dB]
AOP
[dB]
-38±3
64
125
Supply
voltage
range [V]
Supply
current
[μA]
Dual
mode
150
-
140
-
the road toward smarter and
MP23AB02B
efficient voice-controlled
1.6 - 3.6
devices combining
MP23ABE03 *
-38±1
64
125
performances, small size and
MP23ABE03DM *
-38±1
64
125
1.6 - 3.6
140 (normal)
26 (sniff)
low power consumption
* Q3 2014
http://www.st.com/web/en/catalog/sense_power/FM89/SC1922
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