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AD7150 の電気的特性と機能

AD7150のメーカーはAnalog Devicesです、この部品の機能は「Capacitance Converter」です。


製品の詳細 ( Datasheet PDF )

部品番号 AD7150
部品説明 Capacitance Converter
メーカ Analog Devices
ロゴ Analog Devices ロゴ 




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AD7150 Datasheet, AD7150 PDF,ピン配置, 機能
Ultra-Low Power, 2-Channel, Capacitance
Converter for Proximity Sensing
AD7150
FEATURES
Ultra-low power
2.7 V to 3.6 V, 100 μA
Response time: 10 ms
Adaptive environmental compensation
2 independent capacitance input channels
Sensor capacitance (CSENS) 0 pF up to 13 pF
Sensitivity to 1 fF
EMC tested
2 modes of operation
Standalone with fixed settings
Interfaced to a microcontroller for user-defined settings
2 proximity detection output flags
2-wire serial interface (I2C compatible)
Operating temperature
−40°C to +85°C
10-lead MSOP package
APPLICATIONS
Proximity sensing
Contactless switching
Position detection
Level detection
GENERAL DESCRIPTION
The AD7150 delivers a complete signal processing solution for
capacitive proximity sensors, featuring an ultra-low power
converter with fast response time. The AD7151 is a single-
channel, lower power alternative to the AD7150.
The AD7150 uses Analog Devices, Inc., capacitance-to-digital
converter (CDC) technology, which combines features
important for interfacing to real sensors, such as high input
sensitivity and high tolerance of both input parasitic ground
capacitance and leakage current.
The integrated adaptive threshold algorithm compensates for
any variations in the sensor capacitance due to environmental
factors like humidity and temperature or due to changes in the
dielectric material over time.
By default, the AD7150 operates in standalone mode using the
fixed power-up settings and indicates detection on two digital
outputs. Alternatively, the AD7150 can be interfaced to a
microcontroller via the serial interface, the internal registers can
be programmed with user-defined settings, and the data and
status can be read from the part.
The AD7150 operates with a 2.7 V to 3.6 V power supply. It is
specified over the temperature range of −40°C to +85°C.
CSENS1
CSENS2
CIN1
EXC1
CIN2
EXC2
FUNCTIONAL BLOCK DIAGRAM
VDD
Σ-Δ CDC
MUX AD7150
DIGITAL
FILTER
THRESHOLD
SERIAL
INTERFACE
EXCITATION
THRESHOLD
GND
Figure 1.
SCL
SDA
OUT1
OUT2
Rev. 0
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
www.analog.com
Fax: 781.461.3113
©2007 Analog Devices, Inc. All rights reserved.

1 Page





AD7150 pdf, ピン配列
AD7150
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications....................................................................................... 1
General Description ......................................................................... 1
Functional Block Diagram .............................................................. 1
Revision History ............................................................................... 2
Specifications..................................................................................... 3
Timing Specifications .................................................................. 4
Absolute Maximum Ratings............................................................ 5
ESD Caution.................................................................................. 5
Pin Configuration and Function Descriptions............................. 6
Typical Performance Characteristics ............................................. 7
Architecture and Main Features ................................................... 10
Capacitance-to-Digital Converter............................................ 10
CAPDAC ..................................................................................... 10
Comparator and Threshold Modes.......................................... 11
Adaptive Threshold.................................................................... 11
Data Average ............................................................................... 11
Sensitivity..................................................................................... 12
Hysteresis..................................................................................... 12
Timeout........................................................................................ 12
AutoCAPDAC Adjustment ....................................................... 13
Power-Down Timer ................................................................... 13
Power Supply Monitor ............................................................... 13
Register Descriptions ..................................................................... 14
Status Register ............................................................................. 15
Data Registers ............................................................................. 16
Average Registers........................................................................ 16
REVISION HISTORY
11/07—Revision 0: Initial Version
Fixed Threshold Registers ......................................................... 16
Sensitivity Registers ................................................................... 16
Timeout Registers....................................................................... 17
Setup Registers............................................................................ 18
Configuration Register .............................................................. 19
Power-Down Timer Register .................................................... 20
CAPDAC Registers .................................................................... 20
Serial Number Register.............................................................. 20
Chip ID Register......................................................................... 20
Serial Interface ................................................................................ 21
Read Operation........................................................................... 21
Write Operation.......................................................................... 21
AD7150 Reset ............................................................................. 22
General Call ................................................................................ 22
Hardware Design Considerations ................................................ 23
Overview ..................................................................................... 23
Parasitic Capacitance to Ground.............................................. 23
Parasitic Resistance to Ground................................................. 23
Parasitic Parallel Resistance ...................................................... 23
Parasitic Serial Resistance ......................................................... 24
Input Overvoltage Protection ................................................... 24
Input EMC Protection ............................................................... 24
Power Supply Decoupling and Filtering.................................. 24
Application Examples ................................................................ 25
Outline Dimensions ....................................................................... 26
Ordering Guide .......................................................................... 26
Rev. 0 | Page 2 of 28


3Pages


AD7150 電子部品, 半導体
ABSOLUTE MAXIMUM RATINGS
TA = 25°C, unless otherwise noted.
Table 3.
Parameter
Positive Supply Voltage VDD to GND
Voltage on Any Input or Output to GND
ESD Rating HBM
(ESD Association Human Body Model, S5.1)
ESD Rating FICDM
(Field-Inducted Charged Device Model)
Operating Temperature Range
Storage Temperature Range
Maximum Junction Temperature
MSOP Package
θJA, Thermal Impedance-to-Air
θJC, Thermal Impedance-to-Case
Reflow Soldering (Pb-Free)
Peak Temperature
Time at Peak Temperature
Rating
0.3 V to +3.9 V
–0.3 V to VDD + 0.3 V
4 kV
1 kV
–40°C to +85°C
–65°C to +150°C
150°C
206°C/W
44°C/W
260(+0/−5)°C
10 sec to 40 sec
AD7150
Stresses above those listed under Absolute Maximum Ratings
may cause permanent damage to the device. This is a stress
rating only; functional operation of the device at these or any
other conditions above those indicated in the operational
section of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect
device reliability.
ESD CAUTION
Rev. 0 | Page 5 of 28

6 Page



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共有リンク

Link :


部品番号部品説明メーカ
AD7150

Capacitance Converter

Analog Devices
Analog Devices
AD7151

Capacitance Converter

Analog Devices
Analog Devices
AD7152

12-Bit Capacitance-to-Digital Converter

Analog Devices
Analog Devices
AD7153

12-Bit Capacitance-to-Digital Converter

Analog Devices
Analog Devices


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