TSSP6P38
www.vishay.com
Vishay Semiconductors
IR 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
16797
1
2
3
4
• Visible light is suppressed by IR filter
• Insensitive to supply voltage ripple and noise
• Material categorization: for definitions of compliance
please see
www.vishay.com/doc?99912
MECHANICAL DATA
Pinning
1 = GND, 2 = N.C., 3 = V
S
, 4 = OUT
APPLICATIONS
• Object approach detection for activation of displays and
user consoles, signaling of alarms, etc.
• Simple gesture controls
• Differentiation of car arrival, static, car departure in
parking lots
• Reflective sensors for toilet flush
• Navigational sensor for robotics
ORDERING CODE
Taping:
TSSP6P38TT - top view taped
TSSP6P38TR - side view taped
DESCRIPTION
The TSSP6P38 is a compact infrared detector module for
proximity sensing application. It receives 38 kHz modulated
signals and has a peak sensitivity of 940 nm.
The length of the detector’s output pulse varies in proportion
to the amount of light reflected from the object being
detected.
PARTS TABLE
Carrier frequency
Package
Pinning
Dimensions (mm)
Mounting
Application
Note
• Other frequencies available by request
38 kHz
TSSP6P38
Panhead
1 = GND, 2 = N.C., 3 = V
S
, 4 = OUT
7.5 W x 5.3 H x 4.0 D
SMD
Proximity sensors
BLOCK DIAGRAM
16833_19
PROXIMITY SENSING
+3 V
3
33 kΩ
V
S
4
Input
AGC
Band
pass
Demo-
dulator
OUT
Envelope
signal
38 kHz
IR emitter
+3 V
1
PIN
Control circuit
GND
Out to
μC
TSSP6P38
Rev. 1.9, 14-Sep-17
1
Document Number: 82475
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
TSSP6P38
www.vishay.com
Vishay Semiconductors
TEST CONDITION
SYMBOL
V
S
I
S
V
O
V
S
- V
O
I
O
T
j
T
stg
T
amb
T
amb
≤
85 °C
P
tot
VALUE
-0.3 to +6
5
-0.3 to 5.5
-0.3 to (V
S
+ 0.3)
5
100
-25 to +85
-25 to +85
10
UNIT
V
mA
V
V
mA
°C
°C
°C
mW
ABSOLUTE MAXIMUM RATINGS
PARAMETER
Supply voltage (pin 3)
Supply current (pin 3)
Output voltage (pin 4)
Voltage at output to supply
Output current (pin 4)
Junction temperature
Storage temperature range
Operating temperature range
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 conditions for extended periods may affect the device reliability
ELECTRICAL AND OPTICAL CHARACTERISTICS
(T
amb
= 25 °C, unless otherwise specified)
PARAMETER
Supply current (pin 3)
Supply voltage
Receiving distance
Output voltage low (pin 4)
Minimum irradiance
Maximum irradiance
Directivity
Direct line of sight,
test signal see fig. 1,
IR diode TSAL6200, I
F
= 250 mA
I
OSL
= 0.5 mA, E
e
= 0.7 mW/m
2
,
test signal see fig. 1
Pulse width tolerance:
t
pi
- 5/f
o
< t
po
< t
pi
+ 6/f
o
,
test signal see fig. 1
t
pi
- 5/f
o
< t
po
< t
pi
+ 6/f
o
,
test signal see fig. 1
Angle of half receiving distance
TEST CONDITION
E
e
= 0, V
S
= 5 V
E
v
= 40 klx, sunlight
SYMBOL
I
SD
I
SH
V
S
d
V
OSL
E
e min.
E
e max.
ϕ
1/2
MIN.
0.55
-
2.7
-
-
-
50
-
TYP.
0.7
0.8
-
40
-
0.2
-
± 45
MAX.
0.9
-
5.5
-
100
0.4
-
-
UNIT
mA
mA
V
m
mV
mW/m
2
W/m
2
deg
TYPICAL CHARACTERISTICS
(T
amb
= 25 °C, unless otherwise specified)
E
e
Optical Test Signal
(IR diode TSAL6200, I
F
= 0.4 A, 30 pulses, f = f
0
, t = 10 ms)
1.0
t
po
- Output Pulse Width (ms)
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
0.1
1
Output Pulse Width
Input Burst Length
t
pi
*
T
* t
pi
V
O
V
OH
V
OL
t
d
1)
t
10/f
0
is recommended for optimal function
16110_4
Output Signal
1)
2)
7/f
0
<
t
d
<
15/f
0
t
pi
- 5/f
0
<
t
po
<
t
pi
+ 6/f
0
t
po 2)
t
λ
= 950 nm,
Optical Test Signal, Fig.1
10
10
2
10
3
10
4
E
e
- Irradiance (mW/m
2
)
Fig. 1 - Output Active Low
Fig. 2 - Pulse Length and Sensitivity in Dark Ambient
Rev. 1.9, 14-Sep-17
2
Document Number: 82475
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
TSSP6P38
www.vishay.com
Vishay Semiconductors
1.0
0.9
200
E
e min.
/E
e
- Rel. Responsivity
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.0
25
30
35
40
45
50
t
po
- Output Pulse Width (ms)
180
160
140
120
100
80
60
40
20
0
0.1
1
10
100
Burst length = 300 ms, f = f
O
f = f
0
± 5 %
Δf
(3 dB) = f
0
/10
f/f
0
- Relative Frequency
22088
E
e
- Irradiance (mW/m
2
)
Fig. 3 - Frequency Dependence of Responsivity
Fig. 6 - Maximum Output Pulse Width vs. Irradiance
E
e min.
- Threshold Irradiance (mW/m
2
)
5.0
0.40
E
e min.
- Sensitivity (mW/m
2
)
Correlation with Ambient Light Sources:
4.5 10 W/m
2
= 1.4 kLx (Std. illum. A, T = 2855 K)
2
4.0 10 W/m = 8.2 kLx (Daylight, T = 5900 K)
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
0.01
0.1
1
10
100
Wavelength of Ambient
Illumination:
λ
= 950 nm
0.35
0.30
0.25
0.20
0.15
0.10
0.05
0
-30
-10
10
30
50
70
90
E
e
- Ambient DC Irradiance
(W/m
2
)
T
amb
- Ambient Temperature (°C)
Fig. 4 - Sensitivity in Bright Ambient
Fig. 7 - Sensitivity vs. Ambient Temperature
E
e min.
- Threshold Irradiance (mW/m
2
)
0.9
0.8
0.7
f = f
0
S (λ)
rel
- Relative Spectral Sensitivity
1.0
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
750
800
850
900
950 1000 1050 1100 1150
f = 30 kHz
0.6
0.5
f = 20 kHz
0.4
0.3
0.2
0.1
0
1
10
100
f = 100 Hz
1000
f = 10 kHz
ΔV
s
RMS
- AC Voltage on DC Supply Voltage (mV)
21425
λ-
Wavelength (nm)
Fig. 5 - Sensitivity vs. Supply Voltage Disturbances
Fig. 8 - Relative Spectral Sensitivity vs. Wavelength
Rev. 1.9, 14-Sep-17
3
Document Number: 82475
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
TSSP6P38
www.vishay.com
Vishay Semiconductors
120
Emitter: VSMB1940X01
100
80
1.2
Relative Response Distance
1.0
0.8
t
po
(ms)
0.6
0.4
0.2
60
40
I
F
= 100 mA
Directivity Characteristic of a
Reflective
Sensor
using
VSMB3940X01 and TSSP6P38
10
30
50
70
90
20
I
F
= 10 mA
0
0.0
0.2
I
F
= 30 mA I
F
= 50 mA
0.4
0.6
0.8
1.0
1.2
0
-90 -70 -50 -30 -10
Angle (°)
Response Distance (m)
Fig. 9 - Angle Characteristic
Fig. 11 - t
po
vs. Distance Kodak Gray Card Plus 15 %
800
700
600
7
6
5
t
repeat
min. (ms)
d
max.
/d
min.
0
20
40
60
80 100 120 140 160 180
500
400
300
200
100
0
4
3
2
1
0
10 20 30 40 50 60 70 80 90 100 110 120
t
pi
(ms)
t
pi
(ms)
Fig. 10 - Max. Rate of Bursts
Fig. 12 - Dynamic Range of Sensor vs. t
pi
The typical application of the TSSP6P38 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:
t
repeat
= 500 ms
t
pi
= 120 ms, 38 kHz
Optical signal
Response of the
TSSP6P38
(strong reflection)
Response of the
TSSP6P38
(weak reflection)
Rev. 1.9, 14-Sep-17
4
Document Number: 82475
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
TSSP6P38
www.vishay.com
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.
The logarithmic characteristic of the AGC in the TSSP6P38
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.
Vishay Semiconductors
IR Receiver
TSSP6P38
Emitter
TSAL6200
Separation
to avoid
crosstalk by
stray
light inside
the housing
PACKAGE DIMENSIONS
in millimeters
7.5
Pick and place area. TT taping
7.2
A
5.3
2.8
1
0.5 ± 0.15
1.27
3 x 1.27 =
5.51
3.81
4
0.3
4x
0.1
0.1
(1.5)
(1.4)
2.9
0.4 A
4
Not indicated tolerances ± 0.3
Pick and place area. TR taping
2.6
technical drawings
according to DIN
specifications
Footprint
3 x 1.27 = 3.81
2.35
1.27
0.9
R 1.7
Drawing-No.: 6.544-5341.01-4
Issue: 8; 02.09.09
16776
Rev. 1.9, 14-Sep-17
2.2
5
Document Number: 82475
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
2.2
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