|
|
PDF MTCH101 Data sheet ( Hoja de datos )
| Número de pieza | MTCH101 | |
| Descripción | Single-Channel Proximity Detector | |
| Fabricantes | Microchip | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de MTCH101 (archivo pdf) en la parte inferior de esta página. Total 20 Páginas | ||
|
No Preview Available !
MTCH101
Single-Channel Proximity Detector
Features:
• Capacitive Proximity Detection System:
- High Signal to Noise Ratio (SNR)
- Adjustable sensitivity
- Noise rejection filters
- Automatic Environmental Compensation
- Wide range of sensor shape and size support
- Stuck Release Mechanism
• No External Components
• Low-Power mode
• Response Time Down to 75 ms
• Wide Operative Voltage:
- 2.0V to 5.5V
• Operating Temperature:
- -40°C to +85°C
Applications:
• Light Switch
• Portable Device Enabler
• White Goods and Appliances
• Office Equipment and Toys
• Display and Keypad Backlighting Activation
• SAR Compliant Application
Package Type
The device is available in 6-lead SOT-23 packaging
(see Figure 1).
FIGURE 1:
6-PIN DIAGRAM
SOT-23
MTI 1
Vss 2
MTSA 3
6 MTPM
5 VDD
4 MTO
TABLE 1:
6-PIN SOT-23 PINOUT
DESCRIPTION
I/O 6-Pin SOT-23
Description
MTI 1 Proximity Sensor Input
VSS
MTSA
MTO
2 Ground
3 Sensitivity Adjust Input
4 Detect Output (Active-Low)
VDD 5 Power Supply Input
MTPM 6 Low-Power mode Select
(Active-Low)
2012-2013 Microchip Technology Inc.
Preliminary
DS40001664B-page 1
1 page  
3.0 SENSITIVITY ADJUSTMENT
The sensitivity of the system determines how far and
fast it can respond to proximity or touch. The MTCH101
provides the MTSA pin to adjust the sensitivity, and the
voltage on this pin will determine the sensitivity. VDD
voltage will give the lowest sensitivity, while GND
voltage will give the highest sensitivity.
The device will sample the voltage on the MTSA pin
after each scan, so it does not only support setting a
fixed sensitivity by a resistor ladder, but it also allows
adjusting the sensitivity dynamically, while the device is
running. A Digital-to-Analog Converter (DAC)
controlled by the host, or a hardware potentiometer can
be used to adjust the sensitivity. See typical circuit in
Figure 3-1 to Figure 3-4.
FIGURE 3-1:
VDD
FIXED SENSITIVITY
USING RESISTOR
LADDER
R1
R3
MTSA
R2 10k
Note: Both R1 and R2 are recommended to be
greater than 100K for lower power consumption.
FIGURE 3-2:
HARDWARE SENSITIVITY
ADJUST USING
POTENTIOMETER
VDD
R2
R1
10k
MTSA
MTCH101
FIGURE 3-3:
SENSITIVITY
CONTROLLED BY HOST
USING DAC
Host
DAC
R2
1 0k
MTSA
FIGURE 3-4:
SENSITIVITY
CONTROLLED BY HOST
USING PWM
Host
PWM
R
C
MTSA
Note 1: Application Note AN538, “Using PWM to
Generate Analog Output” has details
about how to choose appropriate R and C
values.
2012-2013 Microchip Technology Inc.
Preliminary
DS40001664B-page 5
5 Page 
MTCH101
Note:
The tables provided following this note are
a statistical summary based on a limited
number of samples and are provided for
informational purposes only. The
performance characteristics listed herein
are not tested or guaranteed. In some
tables, the data presented may be outside
the specified operating range (e.g.,
outside specified power supply range)
and therefore, outside the warranted
range.
8.3 DC Characteristics
TABLE 8-1: MTCH101 (INDUSTRIAL)
DC CHARACTERISTICS
Standard Operating Conditions (unless otherwise specified)
Param
No.
Sym.
Characteristic
Min. Typ† Max. Units
Conditions
D001 VDD Supply Voltage
2.0 — 5.5 V
D002 VPOR VDD Start Voltage
to ensure Power-on-Reset
— Vss —
V
D003 SVDD VDD Rise Rate
to ensure Power-on Reset
0.05* — — V/ms
* These parameters are characterized but not tested.
† Data in “Typ” column is at 3.0V, 25°C unless otherwise stated. These parameters are for design guidance
only and are not tested.
TABLE 8-2: RESPONSE TIME AND CURRENT CONSUMPTION
Power Mode
Typical
Current (µA)
Highest Sensitivity
Response Time (ms)
Typical
Max.
Lowest Sensitivity
Response Time (ms)
Typical
Max.
Normal mode
Low-Power mode
Normal mode
Low-Power mode
Normal mode
Low-Power mode
120
30
200
54
340
97
100 150 210 260
790 890 900 1000
80 130 190 240
640 740 750 850
76 119 190 220
530 620 640 730
Conditions
VDD = 2.0V
VDD = 3.3V
VDD = 5.0V
2012-2013 Microchip Technology Inc.
Preliminary
DS40001664B-page 11
11 Page | ||
| Páginas | Total 20 Páginas | |
| PDF Descargar | [ Datasheet MTCH101.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| MTCH101 | Single-Channel Proximity Detector | Microchip |
| MTCH102 | Proximity/Touch Controller | Microchip |
| MTCH105 | Proximity/Touch Controller | Microchip |
| MTCH108 | Proximity/Touch Controller | Microchip |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |