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부품번호 | ADUX1020 기능 |
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기능 | Photometric Sensor | ||
제조업체 | Analog Devices | ||
로고 | |||
전체 30 페이지수
Data Sheet
FEATURES
Multifunction photometric sensor and signal conditioning
Fully integrated AFE, ADC, LED driver, and timing core
Usable for multiple optical measurement applications,
including gesture control and proximity sensing
Enables an ambient light rejection capability using both
optical and analog filtering
On-chip programmable flexible current sink for external LED
High sensitivity and signal-to-noise ratio (SNR)
High resolution position measurement
Gesture recognition with 0.5 cm to 15 cm range
Proximity sensing to 20 cm
400 kHz I2C interface
Gesture/proximity works under infrared (IR) transparent
glass or other materials
Simple integration with optics; no need for precise
alignment and no lens is required
Low power operation
1.8 V analog/digital core
8-lead, 2 mm × 3 mm, 0.65 mm height LFCSP
APPLICATIONS
Gesture for user interface (UI) control in portable devices
Industrial/automation monitoring
Presence detection
Angle sensing
Photometric Sensor
for Gesture and Proximity
ADUX1020
GENERAL DESCRIPTION
The ADUX1020 is a highly efficient photometric sensor with an
integrated 14-bit analog-to-digital converter (ADC) and a 20-bit
burst accumulator that works in concert with a flexible light
emitting diode (LED) driver. It is designed to modulate a LED
and measure the corresponding optical return signal. The digital
engine includes circuitry and control for data aggregation and
proximity detection.
The data output and device configuration use a 1.8 V I2C interface.
The control circuitry includes flexible LED pulse width and
period generation combined with synchronous detection. This
circuitry is complemented by a low noise, low power, and wide
dynamic range configurable analog front end (AFE), clock
generation, LED driver, and digital logic for position and smart
sample mode (event driven x, y coordinates, relative z data).
This complete AFE features ambient light rejection, avoiding
corruption due to external interference.
One inexpensive standard surface mount, broad angle or narrow
angle IR LED (depending upon application) is required. This
LED mounts externally to the ADUX1020.
Packaged in a small, clear mold, 2 mm × 3 mm, 8-lead LFCSP,
the ADUX1020 is specified over an operating temperature
range of −40°C to +85°C.
FUNCTIONAL BLOCK DIAGRAM
AFE: SIGNAL CONDITIONING
ADUX1020
POSITION
SENSOR
ADC
GESTURE ENGINE
DIGITAL INTERFACE
CONTROL LOGIC
SDA
SCL
INT
LEDX
LED DRIVER
Figure 1.
VREF
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
©2016 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com
Data Sheet
SPECIFICATIONS
TEMPERATURE AND POWER SPECIFICATIONS
Table 1. Operating Conditions
Parameter
TEMPERATURE RANGE
Operating Range
Storage Range
POWER SUPPLY VOLTAGES
Input Supply Voltage
Supply Voltage for the LEDs
Symbol Test Conditions/Comments
VDD
VLED VLED depend on the LED selected
ADUX1020
Min Typ Max
Unit
−40 +85 °C
−65 +150 °C
1.7 1.8 1.9
3.3
V
V
VDD = 1.8 V, ambient temperature, unless otherwise noted.
Table 2. Current Consumption
Parameter
TOTAL POWER CONSUMPTION
VDD STANDBY MODE CURRENT
SUPPLY CURRENT
1.8 V VDD Peak
1.8 V VDD Average
Example VDD Average
Symbol
IVDD_STANDBY
IVDD_PEAK
IVDD_AVG
Average VLED
Example VLED Average
1 Pulse (Proximity)
ILED_AVG
8 Pulses (Sample/Gesture)
Test Conditions/Comments
See the Calculating Current Consumption section
Continuous maximum rate AFE operation
See the Calculating Current Consumption section
LED_OFFSET = 25 µs, LED_PERIOD = 19 µs,
LED_PULSES = 8, LED peak current = 250 mA
1 Hz data rate; proximity mode
50 Hz data rate; proximity mode
820 Hz data rate; sample/gesture mode
See the Calculating Current Consumption section
Peak LED current = 250 mA, LED_PULSE width = 3 µs
1 Hz data rate
50 Hz data rate
820 Hz data rate
50 Hz data rate
820 Hz data rate
Min Typ Max
3.5
Unit
µW
µA
<10 mA
30 10,000 µA
6 µA
116 µA
1965
µA
1 20,000 µA
1
38
615
300
4920
µA
µA
µA
µA
µA
Rev. A | Page 3 of 31
4페이지 ADUX1020
DIGITAL SPECIFICATIONS
VDD = 1.7 V to 1.9 V, unless otherwise noted.
Table 5.
Parameter
LOGIC INPUTS (SCL, SDA)
Input Voltage
High Level
Low Level
Input Current
High Level
Low Level
Input Capacitance
LOGIC OUTPUTS
Output Voltage
INT High Level
INT Low Level
SDA Low Level
Current
Maximum INT Pin
SDA Low Level Output
Symbol
VIH
VIL
IIH
IIL
CIN
VOH
VOL
VOL1
IINT
IOL
Test Conditions/Comments
Proper operation to VDD only
2 mA output current
Source or sink
VOL1 = 0.6 V
Data Sheet
Min
Typ Max
Unit
0.7 × VDD
−10
−10
3.6
0.3 × VDD
+10
+10
10
V
V
μA
μA
pF
VDD − 0.5
VDD
0.5
0.2 × VDD
V
V
V
6
6
mA
mA
TIMING SPECIFICATIONS
Table 6. I2C Timing Specifications
Parameter
I2C PORT1
SCL Frequency
SCL Minimum Pulse Width High
SCL Minimum Pulse Width Low
Start Condition Hold Time
Start Condition Setup Time
SDA Setup Time
SCL and SDA Rise Time
SCL and SDA Fall Time
Stop Condition Setup Time
1 Guaranteed by design.
Symbol
t1
t2
t3
t4
t5
t6
t7
t8
Test Conditions/Comments
See Figure 3
Min Typ Max Unit
400 kHz
600 ns
1300
ns
600 ns
600 ns
100 ns
1000 ns
300 ns
600 ns
SDA
t3
t5 t3
SCL
t6 t1
t2 t7
t4
Figure 3. I2C Timing
t8
Rev. A | Page 6 of 31
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부품번호 | 상세설명 및 기능 | 제조사 |
ADUX1020 | Photometric Sensor | Analog Devices |
DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |