TFBS4652 Datasheet

TFBS4652
www.vishay.com
Vishay Semiconductors
Infrared Transceiver, 9.6 kbit/s to 115.2 kbit/s (SIR)
FEATURES
• Compliant with the IrDA physical layer IrPHY 1.4
(low power specification, 9.6 kbit/s to
115.2 kbit/s)
• Link distance: 30 cm/20 cm full 15° cone with
standard or low power IrDA, respectively.
Emission intensity can be set by an external
resistor to increase the range to > 50 cm
• Typical transmission distance to standard device: 50 cm
20206
• Small package (L x W x H in mm): 6.8 x 2.8 x 1.6
DESCRIPTION
• Low current consumption 75 μA idle at 3.6 V
• Operates from 2.4 V to 3.6 V within specification over full
temperature range from -25 °C to +85 °C
IrDA®
The TFBS4652 is one of the smallest
compliant
transceivers available. It supports data rates up to
115 kbit/s. The transceiver consists of a PIN photodiode,
infrared emitter, and control IC in a single package.
• Split power supply, emitter can be driven by a separate
power
supply
not
loading
the
regulated.
U.S. pat. no. 6,157,476
• Adjustable to logic I/O voltage swing from 1.5 V to 5.5 V
• Qualified for lead (Pb)-free and Sn/Pb processing (MSL4)
• Material categorization: For definitions of compliance
please see www.vishay.com/doc?99912
APPLICATIONS
• Mobile phone
• PDAs
PRODUCT SUMMARY
PART NUMBER
TFBS4652
DATA RATE
(kbit/s)
DIMENSIONS
HxLxW
(mm x mm x mm)
LINK DISTANCE
(m)
OPERATING
VOLTAGE
(V)
IDLE SUPPLY
CURRENT
(mA)
115.2
1.6 x 6.8 x 2.8
0 to ≥ 0.3
2.4 to 3.6
0.075
PARTS TABLE
PART
DESCRIPTION
QTY/REEL
TFBS4652-TR1
Oriented in carrier tape for side view surface mounting
1000 pcs
TFBS4652-TR3
Oriented in carrier tape for side view surface mounting
2500 pcs
TFBS4652-TT1
Oriented in carrier tape for top view surface mounting
1000 pcs
FUNCTIONAL BLOCK DIAGRAM
VCC
Vlog
Tri-State
Driver
PD
Amplifier
RXD
Comparator
IREDA
SD
Mode
Control
IRED Driver
IRED
TXD
ASIC
19288
GND
Rev. 1.4, 28-Jan-14
Document Number: 84671
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PIN DESCRIPTION
PIN NUMBER
SYMBOL
DESCRIPTION
1
IREDA
IRED anode, connected via a current limiting resistor to VCC2.
A separate unregulated power supply can be used.
I/O
ACTIVE
2
RXD
Receiver output. Normally high, goes low for a defined pulse duration with
the rising edge of the optical input signal. Output is a CMOS tri-state driver,
which swings between ground and Vlogic. Receiver echoes transmitter output.
O
Low
3
TXD
Transmitter data input. Setting this input above the threshold turns on the transmitter.
This input switches the IRED with the maximum transmit pulse width of about 100 μs.
I
High
4
SD
Shutdown. Logic low at this input enables the receiver, enables the transmitter, and
un-tri-states the receiver output. It must be driven high for shutting down the transceiver.
I
High
5
Vlogic
Reference for the logic swing of the output and the input logic levels.
I
6
VCC
Power supply, 2.4 V to 3.6 V. This pin provides power for the receiver and
transmitter drive section. Connect VCC1 via an optional filter.
7
GND
Ground
PINOUT
Definitions:
In the Vishay transceiver datasheets the following
nomenclature is used for defining the IrDA operating modes:
TFBS4652, bottom view
weight 0.05 g
• SIR: 2.4 kbit/s to 115.2 kbit/s, equivalent to the basic serial
infrared standard with the physical layer version IrPhy 1.0
• MIR: 576 kbit/s to 1152 kbit/s
• FIR: 4 Mbit/s
• VFIR: 16 Mbit/s
MIR and FIR were implemented with IrPhy 1.1, followed by
IrPhy 1.2, adding the SIR Low Power Standard. IrPhy 1.3
extended the low power option to MIR and FIR and VFIR
was added with IrPhy 1.4. A new version of the standard in
any case obsoletes the former version.
19284
ABSOLUTE MAXIMUM RATINGS
PARAMETER
TEST CONDITIONS
SYMBOL
MIN.
MAX.
UNIT
Supply voltage range, transceiver
0 V < VCC2 < 6 V
VCC1
-0.5
6
V
Supply voltage range, transmitter
0 V < VCC1 < 3.6 V
VCC2
-0.5
6
V
Supply voltage range, digital supply
0 V < VCC1 < 3.6 V
Vlogic
-0.5
6
V
All states
VIN
-0.5
Vlogic + 0.5
V
Independent of Vdd or Vlogic
VIN
-0.5
6
V
40
mA
Voltage at RXD
Input voltage range,
transmitter TXD
Input currents
For all pins, except IRED anode pin
TYP.
-40
Output sinking current
20
mA
Power dissipation
PD
250
mW
Junction temperature
TJ
125
°C
Ambient temperature range (operating)
Tamb
-25
+85
°C
Storage temperature
Tstg
-40
+100
°C
260
°C
Soldering
temperature (1)
Repetitive pulse output current
Average output current (transmitter)
See section
“Recommended Solder Profile”
< 90 μs, ton < 20 %
IIRED (RP)
500
mA
IIRED (DC)
100
mA
Notes
• Reference point pin, GND unless otherwise noted.
Typical values are for DESIGN AID ONLY, not guaranteed nor subject to production testing.
(1) Sn/lead (Pb)-free soldering. The product passed Vishay’s standard convection reflow profile soldering test.
Rev. 1.4, 28-Jan-14
Document Number: 84671
2
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TFBS4652
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EYE SAFETY INFORMATION
STANDARD
CLASSIFICATION
IEC/EN 60825-1 (2007-03), DIN EN 60825-1 (2008-05) “SAFETY OF LASER PRODUCTS Part 1: equipment classification and requirements”, simplified method
Class 1
IEC 62471 (2006), CIE S009 (2002) “Photobiological Safety of Lamps and Lamp Systems”
Exempt
DIRECTIVE 2006/25/EC OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL of 5th April 2006
on the minimum health and safety requirements regarding the exposure of workers to risks arising
from physical agents (artificial optical radiation) (19th individual directive within the meaning of article
16(1) of directive 89/391/EEC)
Exempt
Note
• Vishay transceivers operating inside the absolute maximum ratings are classified as eye safe according the above table.
ELECTRICAL CHARACTERISTICS (Tamb = 25 °C, VCC = 2.4 V to 3.6 V unless otherwise noted)
PARAMETER
TEST CONDITIONS
SYMBOL
MIN.
VCC
2.4
TYP.
MAX.
UNIT
3.6
V
130
μA
TRANSCEIVER
Supply voltage range
Dynamic supply current
Idle, dark ambient
SD = low (< 0.8 V), Eeamb = 0 klx,
Ee < 4 mW/m2, -25 °C ≤ T ≤ +85
°C
ICC
90
Idle, dark ambient
SD = low (< 0.8 V), Eeamb = 0 klx,
Ee < 4 mW/m2, T = +25 °C
ICC
75
SD = low, TXD = high
Iccpk
2
SD = low (< 0.8 V), Eeamb = 0 klx,
Ee < 4 mW/m2
Peak supply current during
transmission
Idle, dark ambient at Vlogic - pin
Shutdown supply current,
dark ambient
3
mA
Ilogic
1
μA
SD = high (> Vlogic - 0.5 V),
T = 25 °C, Ee = 0 klx
ISD
0.1
μA
SD = high (> Vlogic - 0.5 V),
T = 70 °C, Ee = 0 klx
ISD
2
μA
SD = high (> Vlogic - 0.5 V),
T = 85 °C, Ee = 0 klx
ISD
3
μA
+85
°C
Operating temperature range
Tamb
Output voltage low
IOL = 0.2 mA, VCC = 2.4 V,
Cload = 15 pF
VOL
Output voltage high
IOL = 0.2 mA, VCC = 2.4 V,
Cload = 15 pF
VOH
SD = VCC, VCC = 2.4 V to 5 V
RRXD
RXD to VCC pull-up impedance
Input voltage low (TXD, SD)
Input voltage high (TXD, SD)
VCC = 2.4 V to 3.6 V
Input voltage threshold SD
VCC = 2.4 V to 3.6 V
Input capacitance (TXD, SD)
μA
-25
0.3
Vlogic - 0.5
V
Vlogic
500
VIL
-0.5
VIH
Vlogic - 0.5
0.9
CI
kΩ
0.5
0.5 x Vlogic
V
V
Vlogic + 0.5
V
0.66 x Vlogic
V
6
pF
Note
• Typical values are for DESIGN AID ONLY, not guaranteed nor subject to production testing.
Rev. 1.4, 28-Jan-14
Document Number: 84671
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TFBS4652
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OPTOELECTRONIC CHARACTERISTICS
PARAMETER
TEST CONDITIONS
SYMBOL
MIN.
TYP.
MAX.
UNIT
Sensitivity:
minimum irradiance Ee in
angular range (1)(2)
9.6 kbit/s to 115.2 kbit/s
λ = 850 nm to 900 nm
Ee
40
(4)
81
(8.1)
mW/m2
(μW/cm2)
Maximum irradiance Ee in
angular range (3)
λ = 850 nm to 900 nm
Ee
5
(500)
kW/m2
(mW/cm2)
According to IrDA IrPHY 1.4,
appendix A1, fluorescent light
specification
Ee
4
(0.4)
mW/m2
(μW/cm2)
Rise time of output signal
10 % to 90 %, CL = 15 pF
tr (RXD)
20
100
ns
Fall time of output signal
90 % to 10 %, CL = 15 pF
tf (RXD)
20
100
ns
Input pulse width
1.63 μs
tPW
1.7
2.9
μs
100
150
μs
tL
30
50
100
μs
The IRED current is internally
controlled but also can be
reduced by an external resistor R1
ID
200
400
mA
1
μA
150
mW/sr
RECEIVER
No output receiver input
irradiance
RXD pulse width of output
signal, 50 % (4)
Receiver start up time
Power on delay
Latency
TRANSMITTER
IRED operating current, current
controlled
Output leakage IRED current
Tamb = 85°C
IIRED
Output radiant intensity (5)
a = 0°, 15°, TXD = high, SD = low,
VCC1 = 3 V, VCC2 = 3 V, R1 = 30 Ω
(resulting in about 50 mA drive
current)
Ie
Output radiant intensity (5)
a = 0°, 15°, TXD = high, SD = low,
VCC1 = 3 V, VCC2 = 3 V, R1 = 0 Ω,
IF = 300 mA
Ie
VCC1 = 5 V, a = 0°, 15°
TXD = low or SD = high
(receiver is inactive as long as
SD = high)
Ie
VCC = 3 V, IF = 50 mA
VCEsat
Output radiant intensity
(5)
Saturation voltage of IRED
driver
Peak - emission wavelength
Optical rise time,
optical fall time
4
25
mW/sr
0.04
0.4
λp
880
tropt,
tfopt
20
886
mW/sr
V
900
nm
100
ns
Optical output pulse duration
Input pulse width t < 30 μs
Input pulse width t ≥ 30 μs
topt
topt
30
t
50
300
μs
μs
Optical output pulse duration
Input pulse width t = 1.63 μs
topt
1.45
1.61
2.2
μs
20
%
Optical overshoot
Notes
• Tamb = 25 °C, VCC = 2.4 V to 3.6 V unless otherwise noted. Typical values are for design aid only, not guaranteed nor subject to production
testing.
(1) This parameter reflects the backlight test of the IrDA physical layer specification to guarantee immunity against light from fluorescent lamps.
(2) IrDA sensitivity definition: minimum irradiance E in angular range, power per unit area. The receiver must meet the BER specification while
e
the source is operating at the minimum intensity in angular range into the minimum half-angular range at the maximum link length.
(3) Maximum irradiance E in angular range, power per unit area. The optical delivered to the detector by a source operating at the maximum
e
intensity in angular range at minimum link length must not cause receiver overdrive distortion and possible related link errors. If placed at
the active output interface reference plane of the transmitter, the receiver must meet its bit error ratio (BER) specification. For more
definitions see the document “Symbols and Terminology” on the Vishay website
(4) RXD output is edge triggered by the rising edge of the optical input signal. The output pulse duration is independent of the input pulse
duration.
(5) The radiant intensity can be adjusted by the external current limiting resistor to adapt the intensity to the desired value. The given value is
for minimum current consumption. This transceiver can be adapted to > 50 cm operation by increasing the current to > 200 mA, e.g.
operating the transceiver without current control resistor (i.e. R1 = 0 Ω) and using the internal current control.
Rev. 1.4, 28-Jan-14
Document Number: 84671
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TFBS4652
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TABLE 1 - TRUTH TABLE
INPUTS
OUTPUTS
SD
TXD
OPTICAL INPUT IRRADIANCE mW/m2
RXD
TRANSMITTER
High
x
x
Tri-state floating with a weak
pull-up to the supply voltage
0
Low
High
x
Low (echo on)
Ie
Low
High > 100 μs
x
High
0
Low
Low
<2
High
0
Low
Low
> min. irradiance Ee
< max. irradiance Ee
Low (active)
0
Low
Low
> max. irradiance Ee
x
0
RECOMMENDED CIRCUIT DIAGRAM
Operated at a clean low impedance power supply the
TFBS4652 needs only one additional external component
when the IRED drive current should be minimized for
minimum current consumption according the low power
IrDA standard. When combined operation in IrDA and
remote control is intended no current limiting resistor is
recommended. When long wires are used for bench tests,
the capacitors are mandatory for testing rise/fall time
correctly.
VCC2
IRED Anode
R1
Vlogic
VCC1
GND
Vlogic
VCC
R2
C1
C2
Ground
SD
SD
TXD
TXD
RXD
RXD
The placement of these parts is critical. It is strongly
recommended to position C2 as close as possible to the
transceiver power supply pins.
When connecting the described circuit to the power supply,
low impedance wiring should be used.
In case of extended wiring the inductance of the power
supply can cause dynamically a voltage drop at VCC2. Often
some power supplies are not apply to follow the fast current
is rise time. In that case another 10 μF cap at VCC2 will be
helpful.
Keep in mind that basic RF-design rules for circuit design
should be taken into account. Especially longer signal lines
should not be used without termination. See e.g. “The Art of
Electronics” Paul Horowitz, Wienfield Hill, 1989, Cambridge
University Press, ISBN: 0521370957.
TABLE 2 - RECOMMENDED APPLICATION
CIRCUIT COMPONENTS
COMPONENT
RECOMMENDED VALUE
Fig. 1 - Recommended Application Circuit
C1, C2
0.1 μF, ceramic Vishay part#
VJ 1206 Y 104 J XXMT
The capacitor C1 is buffering the supply voltage VCC2 and
eliminates the inductance of the power supply line. This one
should be a small ceramic version or other fast capacitor to
guarantee the fast rise time of the IRED current. The resistor
R1 is necessary for controlling the IRED drive current when
the internally controlled current is too high for the
application.
R1
See table 3
R2
47 Ω, 0.125 W (VCC1 = 3 V)
19289
Vishay transceivers integrate a sensitive receiver and a
built-in power driver. The combination of both needs a
careful circuit board layout. The use of thin, long, resistive
and inductive wiring should be avoided. The inputs (TXD,
SD) and the output RXD should be directly (DC) coupled to
the I/O circuit.
TABLE 3 - RECOMMENDED RESISTOR R1 (Ω)
VCC2
(V)
MINIMIZED CURRENT CONSUMPTION,
IrDA LOW POWER COMPLIANT
2.7
24
3
30
3.3
36
The capacitor C2 combined with the resistor R2 is the low
pass filter for smoothing the supply voltage.
As already stated above R2, C1 and C2 are optional and
depend on the quality of the supply voltages VCCx and
injected noise. An unstable power supply with dropping
voltage during transmission may reduce the sensitivity (and
transmission range) of the transceiver.
Rev. 1.4, 28-Jan-14
Document Number: 84671
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RECOMMENDED SOLDER PROFILES
Solder Profile for Sn/Pb Soldering
280
260
10 s max. at 230 °C
T peak = 260 °C max.
240
220
T ≥ 217 °C for 50 s max
220
2 °C/s to 4 °C/s
200
200
180
160 °C max.
180
160
Temperature (°C)
Temperature (°C)
T ≥ 255 °C for 20 s max
260
240 °C max.
240
140
120 s to 180 s
120
90 s max.
100
80
2 °C/s to 4 °C/s
160
20 s
140
120
90 s...120 s
100
50 s max.
2 °C...4 °C/s
80
60
60
40
40
20
20
0
2 °C...4 °C/s
0
0
50
19431
100
150
200
250
300
350
Time (s)
0
50
100
150
200
250
300
350
19261
Time (s)
Fig. 2 - Recommended Solder Profile for Sn/Pb Soldering
Fig. 3 - Solder Profile, RSS Recommendation
Lead (Pb)-free, Recommended Solder Profile
The TFBS4652 is a lead (Pb)-free transceiver and qualified
for lead (Pb)-free processing. For lead (Pb)-free solder paste
like Sn(3.0 - 4.0)Ag(0.5 - 0.9)Cu, there are two standard reflow
profiles: Ramp-Soak-Spike (RSS) and Ramp-To-Spike
(RTS). The Ramp-Soak-Spike profile was developed
primarily for reflow ovens heated by infrared radiation. With
widespread use of forced convection reflow ovens the
Ramp-To-Spike profile is used increasingly. Shown in
figure 2 is Vishay’s recommended profiles for use with the
TFBS4652 transceivers. For more details please refer to the
application note “SMD Assembly Instructions”.
Wave Soldering
For TFDUxxxx and TFBSxxxx transceiver devices wave
soldering is not recommended.
Manual Soldering
Manual soldering is the standard method for lab use.
However, for a production process it cannot be
recommended because the risk of damage is highly
dependent on the experience of the operator. Nevertheless,
we added a chapter to the above mentioned application
note, describing manual soldering and desoldering.
Storage
The storage and drying processes for all Vishay transceivers
(TFDUxxxx and TFBSxxx) are equivalent to MSL4.
The data for the drying procedure is given on labels on the
packing and also in the application note "Taping, Labeling,
Storage and Packing".
Rev. 1.4, 28-Jan-14
Document Number: 84671
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PACKAGE DIMENSIONS in millimeters
19322
Fig. 4 - TFBS4650 Mechanical Dimensions, Tolerance ± 0.2 mm, if not otherwise mentioned
19729
Fig. 5 - TFBS4650 Soldering Footprint, Tolerance ± 0.2 mm, if not otherwise mentioned
Rev. 1.4, 28-Jan-14
Document Number: 84671
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REEL DIMENSIONS in millimeters
Drawing-No.: 9.800-5090.01-4
Issue: 1; 29.11.05
14017
TAPE WIDTH
(mm)
A MAX.
(mm)
N
(mm)
W1 MIN.
(mm)
W2 MAX.
(mm)
W3 MIN.
(mm)
W3 MAX.
(mm)
16
180
60
16.4
22.4
15.9
19.4
16
330
50
16.4
22.4
15.9
19.4
Rev. 1.4, 28-Jan-14
Document Number: 84671
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TAPE DIMENSIONS in millimeters
Tape for Side View Oriented Parts:
19285
Rev. 1.4, 28-Jan-14
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Tape for Top View Oriented Parts:
7.1
4°
max
3.1
0.32
.
Emitter
2
Detector
8°
ma
x.
4
2
Progressive direction
8
technical drawings
according to DIN
specifications
2
Ø 1.5
Ø 1.5
7.5
1.75
16
Drawing-No.: 9.700-5340.01-4
Issue: 1; 15.01.09
21663
Rev. 1.4, 28-Jan-14
Document Number: 84671
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(EEE) - recast, unless otherwise specified as non-compliant.
Please note that some Vishay documentation may still make reference to RoHS Directive 2002/95/EC. We confirm that
all the products identified as being compliant to Directive 2002/95/EC conform to Directive 2011/65/EU.
Vishay Intertechnology, Inc. hereby certifies that all its products that are identified as Halogen-Free follow Halogen-Free
requirements as per JEDEC JS709A standards. Please note that some Vishay documentation may still make reference
to the IEC 61249-2-21 definition. We confirm that all the products identified as being compliant to IEC 61249-2-21
conform to JEDEC JS709A standards.
Revision: 02-Oct-12
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Document Number: 91000