Agilent HSDL-3202
IrDA
Data 1.3 Low Power
Compliant 115.2 Kb/s Infrared
Transceiver
Data Sheet
Description
The HSDL-3202 is a new generation
of low-cost Infrared (IR) transceiver
modules from Agilent Technologies.
It features one of the smallest foot-
prints in the industry at 2.5 H x
8.0 W x 3.0 D mm. Although the
supply voltage can range from 2.7 V
to 3.6 V, the LED drive current is
internally compensated to a con-
stant 32 mA to guarantee link dis-
Features
Ultra small surface mount
package
Minimal height: 2.5 mm
V
CC
from 2.7 to 3.6 volts
Interface to input/output logic
circuits as low as 1.8 V
LED supply voltage can range from
2.7 to 6 volts
Low I
CC
shutdown current
10 nA typical
Complete shutdown
TxD, RxD, PIN diode
Three optional external
components
Temperature performance guaran-
teed, 25
C to 85
C
32 mA LED drive current
Integrated EMI shield
IEC825-1 class 1 eye safe
Edge detection input
prevents the LED from
long turn on time
Applications
Mobile telecom
cellular phones
pagers
smart phones
Data communication
PDAs
portable printers
Digital imaging
digital cameras
photo-imaging printers
Electronic wallet
tance of IrDA Data 1.3 (low
power) physical layer
specification.
The HSDL-3202 meets the link
distance of 20 cm to other IrDA
1.3 low power devices, and 30 cm
to standard one meter IrDA 1.3
devices. It is designed to interface
to input/output logic circuits as
low as 1.8 V.
IrDA 1.3
LOW POWER
IrDA 1.3
STANDARD OR
LOW POWER
30 ILLUMINATION CONE
CELL PHONES
PAGERS
PDAs
CAMERAS
CELL PHONES
PAGERS
PRINTERS
PCs
PDAs
CAMERAS
20 CM TO LOW POWER DEVICES
30 CM TO STANDARD DEVICES
2
Application Circuit
Pinout, Rear View
I/O Pins Configuration Table
Pin
Symbol
Description
Notes
1
GND
Ground
Connect to system ground
2
IOV
CC
Input/Output
Connect to ASIC logic
ASIC V
CC
controller V
CC
voltage
3
V
CC
Supply Voltage
Regulated, 2.7 to 3.6 volts
4
AGND
Analog Ground
Connect to a "quiet" ground
5
SD
Shut Down
This pin must be driven either high
Active High
or low. Do NOT float the pin.
6
RXD
Receiver Data Output
Output is a low pulse for 1.6
s
Active Low
when a light pulse is seen
7
TXD
Transmitter Data Input
Logic High turns on the LED. If
Active High
held high longer than ~ 20
s, the
LED is turned off. TXD must be
driven high or low. Do NOT float
the pin.
8
VLED
LED Supply Voltage
May be unregulated, 2.7 to 6 volts.
SHIELD
EMI Shield
Connect to system ground via a
low inductance trace. For best
performance, do not connect to
GND or AGND directly at the part.
8
7
6
5
4
3
2
1
Recommended Application Circuit Components
Component
Recommended Value
Note
C1
1.0
F,
20%, Tantalum
1
C2
1.0
F,
20%, Tantalum
1
C3
1.0
F,
20%, Tantalum
1
TXD
7
LED
CURRENT
SOURCE
RXD
6
SHUT DOWN
5
RX PULSE
SHAPER
TXD
8 VLED
4 AGND
SD
RXD
3
VCC
2
1 GND
C3
1.0 F
SHIELD
I/O VCC
C2
1.0 F
C1
1.0 F
3
Absolute Maximum Ratings
For implementations where case-to-ambient thermal resistance is
50
C/W.
Parameter
Symbol
Min.
Max.
Units
Storage Temperature
T
S
40
100
C
Operating Temperature
T
A
25
85
C
LED Supply Voltage
V
VLED
0
7
V
Supply Voltage
V
CC
0
7
V
Input/Output Voltage
IOV
CC
0
7
V
Input Voltage: TXD, SD
V
I
0
IOV
CC
+ 0.5
V
Output Voltage: RXD
V
O
0.5
IOV
CC
+ 0.5
V
Solder Reflow
See page 12
Temperature Profile
Transceiver I/O Truth Table
The outputs (LED and RXD) are
controlled by the combination of
the TXD and SD (shutdown) pins
and light falling on the receiver.
As shown in the table below, the
transmitter is non-inverting; the
LED is on when the TXD pin is
high and off when TXD is low.
SD
TXD
LED
Receiver
RXD
Notes
Low
High
On
Don't care
Not valid
2
Low
Off
IrDA signal
Low
3, 4
No signal
High
High
Don't care
Off
Don't care
High
5
Shutdown Mode Notes
When the HSDL-3202 is in Shut-
down Mode (SD pin high), the
part presents different imped-
ances to the rest of the circuit
than when it is in normal mode.
RXD Pin: This pin is NOT Tri-
state. During shutdown the
equivalent circuit is a weak
pullup (~300 k
) to V
CC
. The
ESD protection diodes to V
CC
and
Ground are also present.
TXD Pin: Input protection
diodes are present.
VLED Pin: Typical leakage
current of 1.5 nA.
SD Pin: Will draw approximately
10 nA when driven high.
Caution: The BiCMOS inherent to this design of this component increases the component's suscep-
tibility to damage from electrostatic discharge (ESD). It is advised that normal static precautions
be taken in handling and assembly of this component to prevent damage and/or degradation
which may be induced by ESD.
The receiver is inverting; the RXD
pin is low during IrDA signal
pulses and high when the receiver
does not see any light. When
shutdown (SD pin high), the LED
is off (the state of the TXD pin
does not matter), and the RXD
pin is pulled high with a weak
internal pullup.
4
Recommended Operating Conditions
Parameter
Symbol
Min.
Max.
Units
Conditions
Notes
Operating Temperature
T
A
25
85
C
Supply Voltage
V
CC
2.7
3.6
V
Input/Output Voltage
IOV
CC
1.8
V
CC
V
IOV
CC
operational at
1.5 V at reduced spec
LED Supply Voltage
V
LED
2.7
6
V
TXD, SD Input
Logic High
V
IH
2/3 IOV
CC
IOV
CC
V
IOV
CC
1.8 V
Voltage
Logic Low
V
IL
0
1/3 IOV
CC
V
IOV
CC
1.8 V
Receiver Input
Logic High
EI
H
0.0081
500
mW/cm
2
For in-band signals
7
Irradiance
Logic Low
EI
L
0.4
W/cm
2
For in-band signals
7
Receiver Data Rate
2.4
115.2
Kb/s
Ambient Light
See Test Methods on page 15 for details
RXD Output Waveform
LED Optical Waveform
TXD "Stuck ON" Protection
Receiver Wakeup Time Definition
Transmitter Wakeup Time Definition
RX
LIGHT
t
RW
RXD
SD
VALID DATA
TX
LIGHT
t
TW
TXD
SD
t
F
V
OH
90%
50%
10%
V
OL
t
PW
t
R
t
F
LED OFF
90%
50%
10%
LED ON
t
PW
t
R
t
OPW (MAX.)
TXD
LED
5
Electrical & Optical Specifications
Specifications hold over the recommended operating conditions unless otherwise noted. Unspecified test conditions
may be anywhere in their operating range. All typical values are at 25
C and 3.0 V unless otherwise noted.
Parameter
Symbol Min.
Typ.
Max.
Units
Conditions
Note
Receiver
Viewing Angle
2
1/2
30
Peak Sensitivity Wavelength
p
880
nm
RXD Output
Logic High
V
OH
IOV
CC
0.2
IOV
CC
V
I
OH
= 200
A, EI
0.3
Voltage
W/cm
2
Logic Low
V
OL
0
0.3
V
I
OL
= 200
A
7
RXD Pulse Width
t
PW
2.5
3.5
s
7
RXD Rise Times
t
R
20
70
ns
t
PW
(EI) = 1.6
s, C
L
= 9.0 pF
Max. value @ IOV
CC
= 1.8 V
RXD Fall Times
t
F
25
50
ns
t
PW
(EI) = 1.6
s, C
L
= 9.0 pF
Receiver Latency Time
t
L
20
50
s
8
Receiver Wake Up Time
t
RW
20
100
s
9
Transmitter
Radiant Intensity
IE
H
4
8
28.8
mW/Sr T
A
= 25
C,
1/2
15
,
TXD
2/3 IOV
CC
Viewing Angle
2
1/2
30
60
Peak Wavelength
p
875
nm
Spectral Line Half Width
1/2
35
nm
Optical Pulse Width
t
OPW
2.0
2.23
s
t
PW
(TXD) = 1.6
s
20
30
s
TXD pin stuck high
Optical Rise and Fall Times
t
OR
600
ns
t
PW
(TXD) = 1.6
s
Optical Rise and Fall Times
t
OF
600
ns
t
PW
(TXD) = 1.6
s
TXD Logic Levels
High
V
IH
2/3 IOV
CC
IOV
CC
V
IOV
CC
1.8 V
Low
V
IL
0
1/3 IOV
CC
V
IOV
CC
1.8 V
TXD Input Current High
I
H
0.01
1
A
V
I
2/3 IOV
CC
Low
I
L
1
-0.01
A
0
VI
1/3 IOV
CC
LED Current
On
I
VLED
32
38
mA
V
VLED
= V
CC
= 3.6 V, V
I
(TXD)
2/3 IOV
CC
Off
I
VLED
0.0015 1
A
V
VLED
= V
CC
= 3.6 V, V
I
(TXD)
1/3 IOV
CC
Shutdown
I
VLED
0.0015 1
A
V
I
(SD)
2/3 IOV
CC
Transmitter Wake Up Time
t
TW
12
100
s
10
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