TSSP58P38 Datasheet

TSSP58P38
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Vishay Semiconductors
IR Detector for Mid Range Proximity Sensor
FEATURES
• Up to 2 m for proximity sensing
• Receives 38 kHz modulated signal
• 940 nm peak wavelength
• Photo detector and preamplifier in one package
• Low supply current
• Shielding against EMI
• Visible light is suppressed by IR filter
19026
• Insensitive to supply voltage ripple and noise
• Supply voltage: 2.5 V to 5.5 V
• Material categorization: for definitions of compliance
please see www.vishay.com/doc?99912
MECHANICAL DATA
Pinning
1 = OUT, 2 = GND, 3 = VS
APPLICATIONS
DESCRIPTION
• Object approach detection for activation of displays and
user consoles, signaling of alarms, etc.
The TSSP58P38 is a compact infrared detector module for
proximity sensing application. It receives 38 kHz modulated
signals and has a peak sensitivity of 940 nm.
• Simple gesture controls
• Differentiation of car arrival, static, car departure in
parking lots
The length of the detector’s output pulse varies in proportion
to the amount of light reflected from the object being
detected.
• Reflective sensors for toilet flush
• Navigational sensor for robotics
PARTS TABLE
Carrier frequency
38 kHz
TSSP58P38
Package
Minicast
Pinning
1 = OUT, 2 = GND, 3 = VS
Dimensions (mm)
5.0 W x 6.95 H x 4.8 D
Mounting
Leaded
Application
Proximity sensors
BLOCK DIAGRAM
PROXIMITY SENSING
+3 V
16833_5
3
33 kΩ
IR emitter
VS
Envelope
signal
1
Input
AGC
Band
pass
Demodulator
38 kHz
OUT
+3 V
2
PIN
Control circuit
Out to
μC
GND
TSSP58P38
Rev. 1.4, 01-Sep-15
1
Document Number: 82476
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ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000
TSSP58P38
www.vishay.com
Vishay Semiconductors
ABSOLUTE MAXIMUM RATINGS
PARAMETER
TEST CONDITION
SYMBOL
VALUE
UNIT
VS
-0.3 to +6
V
Supply voltage (pin 3)
Supply current (pin 3)
IS
5
mA
Output voltage (pin 1)
VO
-0.3 to 5.5
V
VS - VO
-0.3 to (VS + 0.3)
V
IO
5
mA
Voltage at output to supply
Output current (pin 1)
Junction temperature
Tj
100
°C
Tstg
-25 to +85
°C
Tamb
-25 to +85
°C
Ptot
10
mW
Storage temperature range
Operating temperature range
Tamb ≤ 85 °C
Power consumption
Note
• Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress rating only
and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of this specification
is not implied. Exposure to absolute maximum rating condtions for extended periods may affect the device reliability.
ELECTRICAL AND OPTICAL CHARACTERISTICS (Tamb = 25 °C, unless otherwise specified)
PARAMETER
Supply current (pin 3)
TEST CONDITION
SYMBOL
MIN.
TYP.
MAX.
Ee = 0, VS = 5 V
ISD
0.55
0.7
0.9
mA
Ev = 40 klx, sunlight
ISH
-
0.8
-
mA
VS
2.5
-
5.5
V
Supply voltage
UNIT
Receiving distance
Direct line of sight,
test signal see fig. 1,
IR diode TSAL6200, IF = 250 mA
d
-
40
-
m
Output voltage low (pin 1)
IOSL = 0.5 mA, Ee = 0.7 mW/m2,
test signal see fig. 1
VOSL
-
-
100
mV
Minimum irradiance
Pulse width tolerance:
tpi - 5/fo < tpo < tpi + 6/fo,
test signal see fig. 1
Ee min.
-
0.2
0.4
mW/m2
Maximum irradiance
tpi - 5/fo < tpo < tpi + 6/fo,
test signal see fig. 1
Ee max.
50
-
-
W/m2
Angle of half receiving distance
ϕ1/2
-
± 45
-
deg
Directivity
TYPICAL CHARACTERSTICS (Tamb = 25 °C, unless otherwise specified)
Optical Test Signal
1.0
(IR diode TSAL6200, IF = 0.4 A, 30 pulses, f = f0, t = 10 ms)
tpo - Output Pulse Width (ms)
Ee
t
t pi *
T
* tpi
VO
10/f0 is recommended for optimal function
Output Signal
1)
2)
VOH
VOL
td 1)
16110_4
7/f0 < td < 15/f0
tpi - 5/f0 < tpo < tpi + 6/f 0
tpo 2)
0.8
Input Burst Length
0.7
0.6
0.5
0.4
0.3
0.2
λ = 950 nm,
Optical Test Signal, Fig.1
0.1
0
0.1
1
10
102
Ee - Irradiance
t
Fig. 1 - Output Active Low
Rev. 1.4, 01-Sep-15
Output Pulse Width
0.9
103
104
(mW/m2)
Fig. 2 - Pulse Length and Sensitivity in Dark Ambient
2
Document Number: 82476
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TSSP58P38
Vishay Semiconductors
1.0
200
0.9
180
tpo - Output Pulse Width (ms)
E e min./Ee - Rel. Responsivity
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0.8
0.7
0.6
0.5
0.4
0.3
0.2
f = f0 ± 5 %
Δf (3 dB) = f0/10
0.1
160
140
120
100
80
60
40
0
25
35
30
40
45
0.1
50
Fig. 3 - Frequency Dependence of Responsivity
0.35
Ee min. - Sensitivity (mW/m2)
0.40
Correlation with Ambient Light Sources:
4.5 10 W/m2 = 1.4 kLx (Std. illum. A, T = 2855 K)
2
4.0 10 W/m = 8.2 kLx (Daylight, T = 5900 K)
3.5
Wavelength of Ambient
Illumination: λ = 950 nm
2.5
2.0
1.5
1.0
0.5
0
0.01
0.1
1
10
0.25
0.20
0.15
0.10
0.05
0
-30
100
S (λ)rel - Relative Spectral Sensitivity
Ee min. - Threshold Irradiance (mW/m2)
f = f0
0.8
0.7
f = 30 kHz
0.6
0.5
f = 20 kHz
0.4
f = 10 kHz
0.2
0.1
f = 100 Hz
1
10
100
1000
ΔVsRMS - AC Voltage on DC Supply Voltage (mV)
30
50
70
90
1.2
1.0
0.8
0.6
0.4
0.2
0
750
94 8408
Fig. 5 - Sensitivity vs. Supply Voltage Disturbances
Rev. 1.4, 01-Sep-15
10
Fig. 7 - Sensitivity vs. Ambient Temperature
1.0
0
-10
Tamb - Ambient Temperature (°C)
Fig. 4 - Sensitivity in Bright Ambient
0.3
100
0.30
Ee - Ambient DC Irradiance (W/m2)
0.9
10
Fig. 6 - Maximum Output Pulse Width vs. Irradiance
5.0
3.0
1
Ee - Irradiance (mW/m2)
22088
f/f0 - Relative Frequency
Ee min. - Threshold Irradiance (mW/m2)
Burst length = 300 ms, f = fO
20
0.0
850
950
1050
1150
λ - Wavelength (nm)
Fig. 8 - Relative Spectral Sensitivity vs. Wavelength
3
Document Number: 82476
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ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000
TSSP58P38
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Vishay Semiconductors
800
140
700
120
Emitter: VSLB3940
100
500
tpo (ms)
trepeat min. (ms)
600
400
300
80
60
100
20
0
0
IF = 10 mA
0
20
40
60
80
0.0
100 120 140 160 180
tpi (ms)
0.4
IF = 30 mA IF = 50 mA
0.8
1.2
1.6
2.0
2.4
Response Distance (m)
Fig. 9 - Max. Rate of Bursts
Fig. 11 - tpo vs. Distance Kodak Gray Card Plus 15 %
7
1.2
6
1.0
5
0.8
dmax./dmin.
Relative Response Distance
IF = 100 mA
40
200
0.6
0.4
4
3
2
Directivity Characteristic of a
Reflective Sensor using
VSLB3940 and TSSP58P38
0.2
0
-80
1
0
-60
-40
-20
0
20
40
60
10 20 30 40 50 60 70 80 90 100 110 120
80
tpi (ms)
Angle (°)
Fig. 10 - Angle Characteristic
Fig. 12 - Dynamic Range of Sensor vs. tpi
The typical application of the TSSP58P38 is a reflective sensor with analog information contained in its output. Such a sensor
is evaluating the time required by the AGC to suppress a quasi continuous signal. The time required to suppress such a signal
is longer when the signal is strong than when the signal is weak, resulting in a pulse length corresponding to the distance of an
object from the sensor. This kind of analog information can be evaluated by a microcontroller. The absolute amount of reflected
light depends much on the environment and is not evaluated. Only sudden changes of the amount of reflected light, and
therefore changes in the pulse width, are evaluated using this application.
Example of a signal pattern:
trepeat = 500 ms
tpi = 120 ms, 38 kHz
Optical signal
Response of the
TSSP58P38
(strong reflection)
Response of the
TSSP58P38
(weak reflection)
Rev. 1.4, 01-Sep-15
4
Document Number: 82476
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000
TSSP58P38
www.vishay.com
Vishay Semiconductors
Example for a sensor hardware:
There should be no common window in front of the emitter
and receiver in order to avoid crosstalk by guided light
through the window.
IR Receiver
TSSP58P38
Emitter
TSAL6200
The logarithmic characteristic of the AGC in the TSSP58P38
results in an almost linear relationship between distance and
pulse width. Ambient light has also some impact to the pulse
width of this kind of sensor, making the pulse shorter.
Separation to avoid
crosstalk by stray light inside
the housing
PACKAGE DIMENSIONS in millimeters
5
4.8
(4)
2.8
(5.55)
6.95 ± 0.3
8.25 ± 0.3
R2
0.9
1.1
30.5 ± 0.5
(1.54)
0.85 max.
0.7 max.
2.54 nom.
2.54 nom.
0.5 max.
1.2 ± 0.2
Marking area
technical drawings
according to DIN
specifications
Not indicated to lerances ± 0.2
Drawing-No.: 6.550-5263.01-4
Issue: 12; 16.04.10
19009
Rev. 1.4, 01-Sep-15
R2
5
Document Number: 82476
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000
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Revision: 02-Oct-12
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Document Number: 91000