VISHAY TFBS4650 Technical data
TFBS4650
Vishay Semiconductors
Infrared Transceiver
9.6 kbit/s to 115.2 kbit/s (SIR)
Description
The TFBS4650 is one of the smallest IrDA® 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.
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°
with standard or low power IrDA, respectively. Emission intensity can be set by an external
resistor to increase the range for extended low
power spec to > 50 cm
• Typical transmission distance to standard device:
50 cm
• Small package L 6.8 mm x W 2.8 mm x H 1.6 mm
• Low current consumption
75 µA idle at 3.6 V
cone
e4
20206
• Shutdown current 10 nA typical at 25 °C
• Operates from 2.4 V to 3.6 V within specification
over full temperature range from - 25 °C to + 85 °C
• Split power supply, emitter can be driven by a separate power supply not loading the regulated. U.S.
Pat. No. 6,157,476
• Lead (Pb)-free device
• Qualified for lead (Pb)-free and Sn/Pb processing
(MSL4)
• Device in accordance with RoHS 2002/95/EC and
WEEE 2002/96/EC
Applications
• Mobile phone
• PDAs
Parts Table
Part Description Qty / Reel
TFBS4650-TR1 Oriented in carrier tape for side view surface mounting 1000 pcs
TFBS4650-TR3 Oriented in carrier tape for side view surface mounting 2500 pcs
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Document Number 84672
Rev. 1.1, 03-Jul-06
Functional Block Diagram
A
r
TFBS4650
Vishay Semiconductors
V
CC
PD
mplifie
Comparator
Tri-State
Driver
RxD
IREDA
SD
TxD
Mode
Control
IRED Driver
IRED
IREDC
ASIC
GND
19283
Pin Description
Pin Number Function Description I/O Active
1 IREDA IRED Anode, connected via a current limiting resistor to V
unregulated power supply can be used.
2 IREDC IRED Cathode, do not connect for standard operation
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
4 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 V
5 SD Shut Down. 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.
6V
7 GND Ground
CC
Power Supply, 2.4 V to 3.6 V. This pin provides power for the receiver and
transmitter drive section. Connect V
about 50 µs.
. Receiver echoes transmitter output.
cc
via an optional filter.
CC1
. A separate
CC2
IHIGH
OLOW
IHIGH
Pinout
TFBS4650, bottom view
weight 0.05 g
19284
Document Number 84672
Rev. 1.1, 03-Jul-06
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TFBS4650
Vishay Semiconductors
Absolute Maximum Ratings
Reference point Pin, GND unless otherwise noted.
Typical values are for DESIGN AID ONLY, not guaranteed nor subject to production testing.
Parameter Test Conditions Symbol Min Ty p. Max Unit
Supply voltage range,
0 V < V
transceiver
Supply voltage range,
0 V < V
transmitter
Voltage at RXD All states V
Input voltage range, transmitter
Independent of V
TXD
< 6 V V
CC2
< 3.6 V V
CC1
or V
CC1
CC2
CC1
CC2
V
in
in
Input currents For all pins, except IRED anode
pin
Output sinking current 20 mA
Power dissipation P
Junction temperature T
Ambient temperature range
(operating)
Storage temperature range T
D
J
T
amb
stg
Soldering temperature ***) see section Recommended
Solder Profile
Repetitive pulse output current < 90 µs, t
Average output current
< 20 % I
on
(RP) 500 mA
IRED
I
(DC) 100 mA
IRED
(transmitter)
Virtual source size Method: (1-1/e) encircled
d0.8 mm
energy
Maximum Intensity for Class 1 IEC60825-1 or
EN60825-1,
I
e
edition Jan. 2001
*)
Due to the internal limitation measures the device is a "class1" device.
**)
IrDA specifies the max. intensity with 500 mW/sr
***)
Sn/Pb-free soldering. The product passed VISHAY’s standard convection reflow profile soldering test.
- 0.5 6.0 V
- 0.5 6.0 V
- 0.5 VCC + 0.5 V
- 0.5 6.0 V
- 40 40 mA
250 mW
125 °C
- 25 + 85 °C
- 40 + 100 °C
*)
(500)
mW/sr
**)
°C
Definitions:
In the Vishay transceiver data sheets the following nomenclature is used for defining the IrDA operating modes:
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.
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Document Number 84672
Rev. 1.1, 03-Jul-06
Electrical Characteristics
Transceiver
T
= 25 °C, VCC = 2.4 V to 3.6 V unless otherwise noted.
amb
Typical values are for DESIGN AID ONLY, not guaranteed nor subject to production testing.
Parameter Test Conditions Symbol Min Ty p . Max Unit
Supply voltage range V
Dynamic supply current
Idle, dark ambient SD = Low (< 0.8 V),
E
= 0 klx,
eamb
< 4 mW/m
E
e
2
- 25 °C ≤ T ≤ + 85 °C
Idle, dark ambient SD = Low (< 0.8 V),
= 0 klx,
E
eamb
E
< 4 mW/m
e
2
T = + 25 °C
Peak supply current during
SD = Low, TXD = High I
transmission
Shutdown supply current
dark ambient
SD = High
(> V
- 0.5 V),
CC
T = 25 °C, Ee = 0 klx
Shutdown supply current, dark
ambient
SD = High
(> V
- 0.5 V),
CC
- 25 °C ≤ T ≤ + 85 °C
Operating temperature range T
Input voltage low (TXD, SD) V
Input voltage high V
Input voltage threshold SD V
Output voltage low V
= 2.4 V to 3.6 V V
CC
= 2.4 V to 3.6 V 0.9 1.35 1.8 V
CC
= 2.4 V to 3.6 V
CC
CLOAD = 15 pF
Output voltage high V
RXD to V
pull-up impedance SD = VCC
CC
= 2.4 V to 3.6 V
CC
= 15 pF
C
LOAD
= 2.4 V to 5 V
V
CC
R
Input capacitance
(TXD, SD)
I
CC
I
CC
ccpk
I
SD
I
SD
V
V
RXD
C
CC
A
IL
IH
OL
OH
I
2.4 3.6 V
- 25 + 85 °C
- 0.5 0.5 V
VCC - 0.5 6.0 V
- 0.5 V
V
CC
TFBS4650
Vishay Semiconductors
90 130 µA
75 µA
23mA
0.1 µA
1.0 µA
x 0.15 V
CC
x 0.8 V
500 kΩ
+ 0.5 V
CC
6pF
Document Number 84672
Rev. 1.1, 03-Jul-06
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