|
|
PDF TTP225 Data sheet ( Hoja de datos )
| Número de pieza | TTP225 | |
| Descripción | 8 KEYS TOUCH PAD DETECTOR IC | |
| Fabricantes | TONTEK | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de TTP225 (archivo pdf) en la parte inferior de esta página. Total 15 Páginas | ||
|
No Preview Available !
Preliminary
TTP225
TonTouchTM
8 KEYS TOUCH PAD DETECTOR IC
GENERAL DESCRIPTION
The TTP225 TonTouchTM is a touch pad detector IC with open drain output which offers 8
touch keys. The touching detection IC is designed for replacing traditional direct button key with
fixed pad size. Low power consumption and wide operating voltage are the contact key features
for DC or AC application.
FEATURES
Operating voltage 2.0V~5.5V
Operating current typical 120uA, max 160uA at VDD=3V
The output refresh rate about 85Hz at VDD=3V
64 steps sensitivity selectable (SLSE0~5 pin option)
Another have offer 2 kinds of base-step (OPST pin option)
Stable touching detection of human body for replacing traditional direct switch key
Provides direct mode、matrix mode and serial mode selected by pad option
Maximum 8 input pads and 8 outputs for direct mode;
Maximum 8 input pads for serial interface mode;
Maximum 8 input pads provide fixed 2*4 and 3*3 matrix types
Outputs(Q0~Q7) are open drain(active low)
After power-on have 0.5~0.7sec stable-time, during the time do not touch the
key-pad, And the function is disabled.
Auto calibration for life. And the re-calibration period is 0.5~0.7sec.
When all keys do not touched.
APPLICATION
Wide consumer products
Button key replacement
PACKAGE CONFIGURATION
NC2 1
48 SLSE5
NC1 2
47 SLSE4
I7 3
46 SLSE3
I6 4
45 SLSE2
NC 5
44 NC
NC 6
43 SLSE1
NC 7
42 NC
I5 8
41 SLSE0
I4 9
40 VSS
I3 10
39 DV
I2
I1
I0
11
12
13
TTP225
SSOP-48
38
37
36
Q7
Q6
Q5
OPW0 14
35 Q4
OPW1 15
34 Q3
OPT0 16
33 Q2
NC 17
32 NC
OPT1 18
31 OPST
NC 19
30 NC
NC 20
29 Q1
OSC1 21
28 Q0
VSS 22
27 TEST
VDD 23
26 NC3
OPS1 24
25 OPS0
09’/08/25
Page 1 of 15
Ver : 1.3
1 page  
Preliminary
ELECTRICAL CHARACTERISTICS
‧Absolute Maximum Ratings
TTP225
TonTouchTM
Parameter
Symbol Conditions
Operating Temperature
TOP
─
Storage Temperature
TSTG
─
Power Supply Voltage
VDD
Ta=25°C
Input Voltage
Human Body Mode
VIN Ta=25°C
ESD ─
Note：VSS symbolizes for system ground
Value
-20 ~ +70
-50 ~ +125
VSS-0.3 ~ VSS+5.5
VSS-0.3 ~ VDD+0.3
5
Unit
℃
℃
V
V
KV
‧DC/AC Characteristics：(Test condition at room temperature=25℃)
Parameter
Operating Voltage
Reference oscillator
Sensor oscillator
Operating Current
Input Ports
Input Ports
Output port Sink Current
Output Port Source Current
Symbol Test Condition
VDD
OSC1 VDD=3V
OSC2 VDD=3V no load
IOP VDD=3V output no load
VIL Input Low Voltage
VIH Input High Voltage
IOL VDD=3V, Vol=0.6V
IOH VDD=3V, Voh=2.4V
Min. Typ. Max. Unit
2.0 3 5.5 V
- 710K -
- 710K -
Hz
Hz
- 120 160 uA
0 - 0.2 VDD
0.8 - 1.0 VDD
- 8 - mA
- -4 - mA
09’/08/25
Page 5 of 15
Ver : 1.3
5 Page 
Preliminary
TTP225
TonTouchTM
APPLICATION CIRCUIT
a. For direct mode
APPLICATION FOR DIRECT KEY OUTPUT MODE
KEY7
KEY6
KEY5
KEY4
KEY3
KEY2
KEY1
KEY0
VCC
+2.0 ~ +5.5V
Voltage Regulator
Vin Vout
VSS
SCe1e P.S. : 3
5~10pF
1 NC2
SLSE5 48
2 NC1
SLSE4 47
3 I7
SLSE3 46
4 I6
SLSE2 45
5 44
6 SLSE1 43
7 42
8 I5
SLSE0 41
9 I4
VSS 40
10 I3 TTP225 DV 39
11 I2 SSOP-48 Q7 38
12 I1
Q6 37
13 I0
Q5 36
14 OPW0
Q4 35
15 OPW1
Q3 34
16 OPT0
Q2 33
17 32
18 OPT1
OPST 31
19 30
20 Q1 29
21 OSC1
Q0 28
22 VSS
TEST 27
23VDD
NC3 26
24 OPS1
OPS0 25
DV
OUT_7
OUT_6
OUT_5
OUT_4
OUT_3
OUT_2
OUT_1
OUT_0
Ci
4.7uF
Co
4.7uF
C2
104
See P.S. : 6
P.S.：1. On PCB, the length of lines from touch pad to IC pins are best the same with K0 to K7.
And the lines do not parallel and cross with other lines.
2. The power supply must be stable. If the supply voltage drift or shift quickly, maybe causing
sensitivity anomalies or false detections.
3. On OSC1 pin adding the C1 capacitor can adjust the system frequency, it will affect the output
refresh rate, power-on stable-time, DV pulse width, and key-on duration time.
4. The material of panel covering on the PCB can not include the metal or the electric element.
The paints on the surfaces are the same.
5. The C2 capacitor must be used between VDD and VSS; and should be routed with very short
tracks to the device’s VDD and VSS pins (TTP225).
6. The value of capacitors can be used by the real application for Ci and Co capacitors.
09’/08/25
Page 11 of 15
Ver : 1.3
11 Page | ||
| Páginas | Total 15 Páginas | |
| PDF Descargar | [ Datasheet TTP225.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| TTP222 | 8 KEYS TOUCH PAD DETECTOR IC | TONTEK |
| TTP223 | 1 KEY TOUCH PAD DETECTOR IC |  TT |
| TTP223-BA6 | 1 KEY TOUCH PAD DETECTOR IC | TT |
| TTP223N-BA6 | 1 KEY TOUCH PAD DETECTOR IC | TT |
| 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 |