TA6038FN [TOSHIBA]
SHOCK SENSOR IC; 震动传感器IC
| 型号： | TA6038FN |
| 厂家： | 
TOSHIBA |
| 描述： | SHOCK SENSOR IC |
| 文件： | 总10页 (文件大小：167K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
TA6038FN
TOSHIBA Bipolar Linear Integrated Circuit Silicon Monolithic
TA6038FN
Shock Sensor IC
TA6038FN detects an existence of external shock through the
shock sensor and output.
Features
·
TA6038FN operates from 2.7 to 5.5 V DC single power supply
voltage.
Signal from the shock sensor is amplified according to setting
gain, and is detected through the internal window
comparator.
·
·
·
TA6038FN incorporates 1-ch shock detecting circuitry.
Input terminal of sensor signal is designed high impedance.
Differential input impedance = 100 MΩ (typ.)
LPF (low pass filter) circuitry is incorporated.
Cut-off frequency of LPF = 7 kHz
Weight: 0.04 g (typ.)
·
·
·
Sensitivity of shock detection can be adjusted by external devices.
Small package
SSOP10-P-0.65A (0.65 mm pitch)
Block Diagram
Pin Connection (top view)
C
R
4
C
C
3
R
1
1
SOA
SIA
1
2
3
4
5
10 OUT
2
9
8
7
6
DO
AI
1
9
8
7
50 MW
OPAMP
SIB
-
+
OP-AMP
-
SOB
GND
AO
2
3
6
CC
DIFF & LPF
V
´5 7 kHz
V
CC
+
-
Comparator
Comparator
1.7 V
REF 1.3 V
0.9 V
+
-
-OPAMP
50 MW
5
4
10
C
2
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TA6038FN
Pin Function
Pin No.
Pin Name
Function
1
2
SOA
SIA
Amp (A) output terminal
Connection terminal of shock sensor
Connection terminal of shock sensor
Amp (B) output terminal
3
SIB
4
SOB
GND
5
Ground terminal
6
V
Power supply voltage
CC
7
AO
AI
Op-Amp output terminal
8
Op-Amp input terminal
9
DO
OUT
Differential-Amp output terminal
Output terminal (output = “L” when shock is detected.)
10
Maximum Ratings (Ta = 25°C)
Characteristics
Symbol
Rating
Unit
Power supply voltage
Power dissipation
V
7
V
CC
P
300
mW
°C
D
Storage temperature
T
-55 to 150
stg
Recommend Operating Condition
Characteristics
Power supply voltage
Operating temperature
Symbol
Rating
Unit
V
T
2.7 to 5.5
V
CC
-25 to 85
°C
opr
Note: The IC may be destroyed due to short circuit between adjacent pins, incorrect orientation of device’s mounting,
connecting positive and negative power supply pins wrong way round, air contamination fault, or fault by
improper grounding.
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TA6038FN
Electrical Characteristics (unless otherwise specified, V = 3.3 V, Ta = 25°C)
CC
Test
Characteristics
Supply voltage
Symbol
Test Condition
Min
Typ.
Max
Unit
V
Circuit
V
¾
¾
2.7
¾
3.3
1.8
1.8
5.5
2.5
2.5
CC
V
V
= 3.3 V
CC
CC
Supply current
I
(1)
mA
CC
= 5.0 V
¾
(DIFF-AMP)
Test
Circuit
Characteristics
Symbol
Test Condition
Min
Typ.
Max
Unit
Input impedance
Gain
(Note 1)
Zin
¾
¾
¾
30
100
14
¾
MW
GvBuf
(2)
13.6
14.4
dB
Connect C = 1000 pF
between
Output DC voltage
VoBuf
(3)
0.7
1
1.3
V
1 pin and 2 pin,
3 pin and 4 pin
Low pass filter cut-off freq.
Output source current
Output sink current
fc
(4)
(5)
(6)
Frequency at -3dB point
5
7
11
¾
¾
kHz
mA
IBso
IBsi
Voh = V
- 1 V
300
75
800
130
CC
Vol = 0.3 V
mA
Note 1: Marked parameters are reference data.
(OP-AMP)
Test
Characteristics
Cut-off frequency
Symbol
Test Condition
Min
Typ.
Max
Unit
Circuit
(Note 1)
(Note 1)
fT
¾
¾
¾
¾
¾
¾
1.5
80
2
¾
¾
MHz
dB
V
Openloop gain
Gvo
Vin1
¾
90
Input voltage 1
Input current
(7)
(8)
¾
1.235
¾
1.3
25
1.365
50
I
nA
mV
mA
mA
in
Offset voltage
(Note 1)
Voff
IAso
IAsi
-5
0
5
Output source current
Output sink current
(9)
Voh = V
- 1 V
250
130
800
200
¾
CC
(10) Vol = 0.3 V
¾
Note 1: Marked parameters are reference data.
(window-comparator)
Test
Characteristics
Trip voltage 1
Symbol
Vtrp1
Test Condition
Min
Typ.
Max
Unit
V
Circuit
Vin1
Vin1
Vin1
(Note 1)
¾
¾
±0.38
±0.4
±0.42
Output source current
Output sink current
IWso
IWsi
(11) Voh = V
- 0.5 V
30
50
¾
mA
mA
CC
(12) Vol = 0.3 V
300
800
¾
Note 1: Marked parameters are reference data.
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TA6038FN
Application Note
1.7 V
C
1
C
R
4
1
4
2
2
3
50MW
50MW
C
3
R
1
7
Shock
sensor
Qs (pC/G)
´5
LPF
9
8
10
C
2
1.3 V
0.9 V
Figure 1 The Configuration of G-Force Sensor Amplifier
Figure 1 shows the configuration of G-Force sensor amplifier. The shock sensor is connected between the
pins 2 and 3.
< How to output 0 or 1 from the pin 10 to detect whether there is a shock or not. >
– Using a sensor with the sensitivity Qs (pC/G) to detect the shock g (G). –
a. Setting gain: C1 = C2 (pF), R1 (kW), R2 (kW)
Example: Detecting 5 (G)-shock using a sensor
Qs ´ g
R2
R1
´ 2´ 5´
= 0.4 (V)
with Qs = 0.34 (pC/G), R1 = 10 (kW), R2 = 100 (kW).
C1
Qs ´ g R2
0.34 ´ 5 100
C1 = C2 =
´
C1 = C2 =
´
= 425 (pF)
0.04
R1
0.04
10
b. Setting the frequency (Hz) of HPF: Setting C3 (mF), R1 (kW)
1
Example: Setting the frequency to 20 Hz with
R1 = 10 (kW).
3
fc (Hz) =
´
10
2´ p ´ R1´ C3
1
3
= 0.8 (mF)
10
C3 =
´
2´ p ´10 ´ 20
c. Setting the frequency (kHz) of LPF: Setting C4 (pF), R2 (kW)
Example: Setting the frequency to 5 kHz with
R2 = 100 (kW).
1
6
fc (kHz) =
´
10
2´ p ´ R2´ C4
1
6
= 318 (pF)
10
C4 =
´
2´ p ´100 ´ 5
< How to output the voltage according to the shock through the pin 7. >
– Using a sensor with the sensitivity Qs (pC/G), and assuming the shock sensitivity of the system is
Vsystem (mV/G). –
a. Setting gain: C1 = C2 (pF), R1 (kW), R2 (kW)
Example: Designing the system with 200 (mV/G)
Qs
C1
R2
R1
by using a sensor that Qs = 0.34 (pC/G),
R1 = 10 (kW), R2 = 100 (kW).
3
(mV/G)
´ 2´ 5´
= Vsystem ´
10
Qs
R2
0.34 100
4
4
C1 = C2 =
´
´
(pF)
C1 = C2 =
´
´
=170 (pF)
10
10
Vsystem R1
200 10
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TA6038FN
Equivalent Circuit
9
7
8
7
VREF
10 kW
AMP
10
5
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TA6038FN
Test Circuit
(1) Supply current I
CC
M
10
9
2
8
3
7
4
6
5
1
(2) DIFF-AMP
Gain GvBuf
Step 1
Step 2
M1
M
M2
M
10
1
9
2
8
3
7
4
6
5
10
9
2
8
3
7
4
6
5
1
Μ2-Μ1
0.68 -0.52
Gain =
(3) DIFF-AMP
(4) DIFF-AMP
Output DC voltage VoBuf
Low pass filter cut-off freq. fc
M
M
10
1
9
2
8
3
7
4
6
5
10
1
9
2
8
3
7
4
6
5
100 pF
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TA6038FN
(5) DIFF-AMP
Output source current IBso
(6) DIFF-AMP
Output sink current IBsi
M
M
10
9
2
8
3
7
4
6
5
10
9
2
8
3
7
4
6
5
1
1
(7) OP-AMP
Input voltage 1 Vin1
M
10
9
2
8
3
7
4
6
5
1
(8) OP-AMP
Input current Iin
M
10
1
9
2
8
3
7
4
6
5
Μ
2
(9) OP-AMP
(10) OP-AMP
Output source current IAso
Output sink current IAsi
M
M
10
1
9
2
8
3
7
4
6
5
10
1
9
2
8
3
7
4
6
5
7
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TA6038FN
(11) Window comparator
(12) Window comparator
Output sink current IWsi
Output source current IWso
10
1
9
2
8
3
7
4
6
5
10
1
9
2
8
3
7
4
6
5
M
M
Test Circuit (for reference)
(a) DIFF-AMP
CMRR
(b) DIFF-AMP
PSRR
M
M
10
9
2
8
3
7
6
5
10
1
9
2
8
3
7
4
6
5
1
4
150 pF
150 pF
150 pF 300 pF
8
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TA6038FN
Package Dimensions
Weight: 0.04 g (typ.)
9
2002-02-13
TA6038FN
RESTRICTIONS ON PRODUCT USE
000707EAA
· TOSHIBA is continually working to improve the quality and reliability of its products. Nevertheless, semiconductor
devices in general can malfunction or fail due to their inherent electrical sensitivity and vulnerability to physical
stress. It is the responsibility of the buyer, when utilizing TOSHIBA products, to comply with the standards of
safety in making a safe design for the entire system, and to avoid situations in which a malfunction or failure of
such TOSHIBA products could cause loss of human life, bodily injury or damage to property.
In developing your designs, please ensure that TOSHIBA products are used within specified operating ranges as
set forth in the most recent TOSHIBA products specifications. Also, please keep in mind the precautions and
conditions set forth in the “Handling Guide for Semiconductor Devices,” or “TOSHIBA Semiconductor Reliability
Handbook” etc..
· The TOSHIBA products listed in this document are intended for usage in general electronics applications
(computer, personal equipment, office equipment, measuring equipment, industrial robotics, domestic appliances,
etc.). These TOSHIBA products are neither intended nor warranted for usage in equipment that requires
extraordinarily high quality and/or reliability or a malfunction or failure of which may cause loss of human life or
bodily injury (“Unintended Usage”). Unintended Usage include atomic energy control instruments, airplane or
spaceship instruments, transportation instruments, traffic signal instruments, combustion control instruments,
medical instruments, all types of safety devices, etc.. Unintended Usage of TOSHIBA products listed in this
document shall be made at the customer’s own risk.
· The information contained herein is presented only as a guide for the applications of our products. No
responsibility is assumed by TOSHIBA CORPORATION for any infringements of intellectual property or other
rights of the third parties which may result from its use. No license is granted by implication or otherwise under
any intellectual property or other rights of TOSHIBA CORPORATION or others.
· The information contained herein is subject to change without notice.
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