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-
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.
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
CELL PHONES
PAGERS
PDAs
CAMERAS
°I
30
L
M
LU
IN
A
TI
ON
NE
CO
.3
IrDA 1 OR
RD
TANDA WER
S
O
LOW P
.3
IrDA 1 R
OWE
LOW P
CELL PHONES
PAGERS
PRINTERS
PCs
PDAs
CAMERAS
20 CM TO LOW POWER DEVICES
30 CM TO STANDARD DEVICES
Application Circuit
8 VLED
LED
CURRENT
SOURCE
C1
1.0 µF
TXD
7 TXD
RXD
SHUT DOWN
6 RXD
5 SD
SHIELD
Pinout, Rear View
4 AGND
3
C2
1.0 µF
C3
1.0 µF
2
V
CC
I/O V
CC
RX PULSE
SHAPER
8
7
6
5
4
3
2
1
1 GND
I/O Pins Configuration Table
Pin Symbol
1
2
3
4
5
6
7
GND
IOV
CC
V
CC
AGND
SD
RXD
TXD
Description
Ground
Input/Output
ASIC V
CC
Supply Voltage
Analog Ground
Shut Down
Active High
Receiver Data Output
Active Low
Transmitter Data Input
Active High
Notes
Connect to system ground
Connect to ASIC logic
controller V
CC
voltage
Regulated, 2.7 to 3.6 volts
Connect to a ”quiet“ ground
This pin must be driven either high
or low. Do NOT float the pin.
Output is a low pulse for 1.6
µs
when a light pulse is seen
Logic High turns on the LED. If
held high longer than ~ 20
µs,
the
LED is turned off. TXD must be
driven high or low. Do NOT float
the pin.
May be unregulated, 2.7 to 6 volts.
Connect to system ground via a
low inductance trace. For best
performance, do not connect to
GND or AGND directly at the part.
8
–
VLED
SHIELD
LED Supply Voltage
EMI Shield
Recommended Application Circuit Components
Component
C1
C2
C3
2
Recommended Value
1.0
µF, ±
20%, Tantalum
1.0
µF, ±
20%, Tantalum
1.0
µF, ±
20%, Tantalum
Note
1
1
1
Absolute Maximum Ratings
For implementations where case-to-ambient thermal resistance is
≤
50°C/W.
Parameter
Storage Temperature
Operating Temperature
LED Supply Voltage
Supply Voltage
Input/Output Voltage
Input Voltage: TXD, SD
Output Voltage: RXD
Solder Reflow
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.
Symbol
T
S
T
A
V
VLED
V
CC
IOV
CC
V
I
V
O
Min.
–40
–25
0
0
0
0
–0.5
Max.
100
85
7
7
7
IOV
CC
+ 0.5
IOV
CC
+ 0.5
See page 12
Units
°C
°C
V
V
V
V
V
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 kΩ) 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.
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.
RXD
Not valid
Low
High
High
5
Notes
2
3, 4
SD Pin:
Will draw approximately
10 nA when driven high.
SD
Low
TXD
High
Low
LED
On
Off
Off
Receiver
Don’t care
IrDA signal
No signal
Don’t care
High
Don’t care
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.
3
Recommended Operating Conditions
Parameter
Operating Temperature
Supply Voltage
Input/Output Voltage
LED Supply Voltage
TXD, SD Input
Voltage
Receiver Input
Irradiance
Ambient Light
Logic High
Logic Low
Logic High
Logic Low
Symbol
T
A
V
CC
IOV
CC
V
LED
V
IH
V
IL
EI
H
EI
L
Min.
–25
2.7
1.8
2.7
2/3 IOV
CC
0
0.0081
2.4
Max.
85
3.6
V
CC
6
IOV
CC
1/3 IOV
CC
500
0.4
115.2
Units
°C
V
V
V
V
V
mW/cm
2
µW/cm
2
Kb/s
IOV
CC
≥
1.8 V
IOV
CC
≥
1.8 V
For in-band signals
For in-band signals
7
7
IOV
CC
operational at
1.5 V at reduced spec
Conditions
Notes
Receiver Data Rate
See Test Methods on page 15 for details
RXD Output Waveform
t
PW
V
OH
90%
50%
10%
Receiver Wakeup Time Definition
SD
RX
LIGHT
V
OL
RXD
t
F
t
R
t
RW
VALID DATA
LED Optical Waveform
t
PW
LED ON
90%
50%
10%
LED OFF
Transmitter Wakeup Time Definition
SD
TXD
t
R
t
F
TX
LIGHT
t
TW
TXD “Stuck ON” Protection
TXD
LED
t
OPW (MAX.)
4
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
Receiver
Viewing Angle
Peak Sensitivity Wavelength
RXD Output
Voltage
RXD Pulse Width
RXD Rise Times
RXD Fall Times
Receiver Latency Time
Receiver Wake Up Time
Transmitter
Radiant Intensity
Viewing Angle
Peak Wavelength
Spectral Line Half Width
Optical Pulse Width
Optical Rise and Fall Times
Optical Rise and Fall Times
TXD Logic Levels
High
Low
IE
H
2θ
1/2
λ
p
∆λ
1/2
t
OPW
t
OR
t
OF
V
IH
V
IL
I
H
I
L
I
VLED
I
VLED
I
VLED
t
TW
4
30
–
–
–
–
–
–
2/3 IOV
CC
0
–
–1
–
–
–
–
8
–
875
35
2.0
20
–
–
–
–
0.01
-0.01
32
28.8
60
–
–
2.23
30
600
600
mW/Sr T
A
= 25°C,
θ
1/2
≤
15°,
TXD
≥
2/3 IOV
CC
°
nm
nm
µs
µs
ns
ns
t
PW
(TXD) = 1.6
µs
TXD pin stuck high
t
PW
(TXD) = 1.6
µs
t
PW
(TXD) = 1.6
µs
IOV
CC
≥
1.8 V
IOV
CC
≥
1.8 V
V
I
≥
2/3 IOV
CC
0
≤
VI
≤
1/3 IOV
CC
V
VLED
= V
CC
= 3.6 V, V
I
(TXD)
≥
2/3 IOV
CC
V
VLED
= V
CC
= 3.6 V, V
I
(TXD)
≤
1/3 IOV
CC
V
I
(SD)
≥
2/3 IOV
CC
10
Logic High
Logic Low
2θ
1/2
λp
V
OH
V
OL
t
PW
t
R
t
F
t
L
t
RW
30
–
–
880
–
–
IOV
CC
0.3
3.5
70
50
50
100
°
nm
V
V
µs
ns
ns
µs
µs
t
PW
(EI) = 1.6
µs,
C
L
= 9.0 pF
Max. value @ IOV
CC
= 1.8 V
t
PW
(EI) = 1.6
µs,
C
L
= 9.0 pF
8
9
I
OH
= –200
µA,
EI
≤
0.3
µW/cm
2
I
OL
= 200
µA
Symbol Min.
Typ.
Max.
Units
Conditions
Note
IOV
CC
– 0.2 –
0
–
–
–
–
–
–
2.5
20
25
20
20
7
7
IOV
CC
V
1/3 IOV
CC
V
1
–
38
µA
µA
mA
µA
µA
µs
TXD Input Current High
Low
LED Current
On
Off
Shutdown
Transmitter Wake Up Time
0.0015 1
0.0015 1
12
100
5
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