Product Specification
PS016005-0204
ZHX1820
Slim Series SIR
Top Look Transceiver
ZiLOG Worldwide Headquarters 532 Race Street San Jose, CA 95126-3432
Telephone: 408.558.8500 Fax: 408.558.8300
www.ZiLOG.com
PS016005-0204
This publication is subject to replacement by a later edition. To determine whether
a later edition exists, or to request copies of publications, contact:
ZiLOG Worldwide Headquarters
532 Race Street
San Jose, CA 95126-3432
Telephone: 408.558.8500
Fax: 408.558.8300
www.ZiLOG.com
ZiLOG is a registered trademark of ZiLOG Inc. in the United States and in other countries. All other
products and/or service names mentioned herein may be trademarks of the companies with which
they are associated.
Document Disclaimer
2004 by ZiLOG, Inc. All rights reserved. Information in this publication concerning the devices,
applications, or technology described is intended to suggest possible uses and may be superseded.
ZiLOG, INC. DOES NOT ASSUME LIABILITY FOR OR PROVIDE A REPRESENTATION OF
ACCURACY OF THE INFORMATION, DEVICES, OR TECHNOLOGY DESCRIBED IN THIS
DOCUMENT. ZiLOG ALSO DOES NOT ASSUME LIABILITY FOR INTELLECTUAL PROPERTY
INFRINGEMENT RELATED IN ANY MANNER TO USE OF INFORMATION, DEVICES, OR
TECHNOLOGY DESCRIBED HEREIN OR OTHERWISE. Devices sold by ZiLOG, Inc. are covered
by warranty and limitation of liability provisions appearing in the ZiLOG, Inc. Terms and Conditions of
Sale. ZiLOG, Inc. makes no warranty of merchantability or fitness for any purpose. Except with the
express written approval of ZiLOG, use of information, devices, or technology as critical components
of life support systems is not authorized. No licenses are conveyed, implicitly or otherwise, by this
document under any intellectual property rights.
ZHX1820
Slim SIR Top Look Transceiver
PS016005-0204
Table of Contents
iii
Table of Contents
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Pin Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
LEDA LED Driver Anode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
TXD Transmit Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
RXD/Receive Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
SD Shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
VCC Positive Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
GND Ground . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Recommended Application Circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Electrical and Timing Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Mechanical Drawings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Soldering and Cleaning Recommendations . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Reflow Soldering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Manual Soldering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Packing, Storage, and Baking Recommendations . . . . . . . . . . . . . . . . . . . . . . 11
Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Baking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Moisture-Proof Packing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Taping Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Customer Feedback Form . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Customer Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Product Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Return Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Problem Description or Suggestion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
ZHX1820
Slim SIR Top Look Transceiver
PS016005-0204
List of Figures
iv
List of Figures
Figure 1. Slim SIR Transceiver Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . 2
Figure 2. Application Block Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Figure 3. I
F
-Ie Characteristics (0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Figure 4. I
F
-LEDA Characteristics (0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Figure 5. Directive Characteristics (Emitting) . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Figure 6. Directive Characteristics (Receiving) . . . . . . . . . . . . . . . . . . . . . . . . . 7
Figure 7. ZHX1820 Mechanical Drawing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Figure 8. Alternate ZHX1820 Mechanical Drawing . . . . . . . . . . . . . . . . . . . . . . 9
Figure 9. Temperature Profile at the Top Surface of ZHX1820 . . . . . . . . . . . 10
Figure 10. ZHX1820 Packaging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Figure 11. ZHX1820 Reel Dimensions (Unit: mm) . . . . . . . . . . . . . . . . . . . . . . 13
Figure 12. Alternate ZHX1820 Reel Dimensions (Unit: mm) . . . . . . . . . . . . . . 14
Figure 13. ZHX1820 Tape Dimensions and Configuration (Unit: mm) . . . . . . . 15
Figure 14. Alternate ZHX1820 Tape Dimensions and
Configuration (Unit: mm) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
List of Tables
Table 1.
Pin Out for the ZHX1820 Transceiver . . . . . . . . . . . . . . . . . . . . . . . . 2
Table 2.
Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Table 3.
Recommended Operating Conditions . . . . . . . . . . . . . . . . . . . . . . . . 5
Table 4.
Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
ZHX1820
Slim SIR Top Look Transceiver
PS016005-0204
1
Description
The ZILOG ZHX1820 is a low-profile version of ZiLOG's popular ZHX1010
1-meter transceiver. Packaged in the "top-look" configuration (that is, the lens axis
is perpendicular to the mounting surface), the transceiver is mechanically
enhanced for ultra compact, power-conscious portable products, such as portable
printers, handheld computers, and personal data assistants (PDAs). Designed to
operate using the IrDA-Data mode, the transceiver combines an infrared emitting
diode (IRED) emitter, a PIN photodiode detector, a digital AC coupled LED driver,
and a receiver/decoder in a single package.
The ZILOG ZHX1820 provides an efficient implementation of the SIR standard in
a small-outline footprint format. Application circuit space is also minimized, as only
three components are required.
ZHX1820 also features an independently controlled shutdown that minimizes
current draw to a maximum of 1
A.
Features
Compliant to IrDA Data Specification SIR
Wide power supply voltage range, 2.4 to 5.5 V
Low-power, listening current, 90
A (typical) at 3.0 V
Slim form factor (9.0 mm long x 3.65 mm wide x 2.75 mm high)
Only two external components required
Telecom operating temperature range (30
C to +85
C) with the
ZHX1820TV115THTR
Extended operating temperature range (40
C to +85
C) with the
ZHX1820TV115XHTR
0 to 1 meter minimum link distance; 0 to 1.5 meters typical (30
C to +85
C)
0 to 80 cm minimum link distance; 0 to 1.2 meters typical (below 30
C)
Meets IEC 825-1 Class 1 Eye Safety Specifications
ZHX1820
Slim SIR Top Look Transceiver
PS016005-0204
2
Block Diagram
Figure 1 is the block diagram for the Slim SIR transceiver.
Figure 1. Slim SIR Transceiver Block Diagram
Pin Descriptions
The ZHX1820 transceiver uses the pins listed in Table 1. The pins are described
in this section.
Table 1. Pin Out for the ZHX1820 Transceiver
Pin
Name
Function
I/O
1
LEDA
IRED anode
--
2
TXD
Transmitter input
I
3
RXD
Receiver output
O
4
SD
Enables shutdown mode
I
5
V
CC
Supply voltage
--
6
GND
Ground
--
ZHX1820
Slim SIR Top Look Transceiver
PS016005-0204
3
LEDA LED Driver Anode
(Power)
This output is connected to the LED anode. Current to the LED is sourced through
an external resistor.
TXD Transmit Data
(Input, active high)
This CMOS input is used to transmit serial data. This input has an internal pull-
down resistor that is disabled (open-circuited) during shutdown.
RXD/Receive Data
(Output, active low)
This output indicates received serial data. It is a tri-state, slew rate controlled
CMOS output (tri-stated during shutdown) driver capable of driving a standard
CMOS load. No external resistor is required.
SD Shutdown
(Input, active high)
This input is used to place the integrated circuit into shutdown mode. Module shut-
down current is influenced by the choice of capacitor used from V
CC
to ground.
V
CC
Positive Supply
(Power)
Connect to positive power supply (2.45.5 V). Filter with a 0.33-
F ceramic
bypass capacitor and terminating resistor as close as possible to the V
CC
pin.
GND Ground
(Power)
Connect to ground of the power supply. A solid ground plane is recommended for
proper operation.
ZHX1820
Slim SIR Top Look Transceiver
PS016005-0204
4
Recommended Application Circuits
Figure 2 shows application block diagrams for the ZHX1820 transceiver.
Figure 2. Application Block Diagrams
ZHX1820
Slim SIR Top Look Transceiver
PS016005-0204
5
Electrical and Timing Specifications
Table 2 through Table 4 present the electrical and timing specifications for the
ZHX1820 transceiver.
Table 2. Absolute Maximum Ratings
Parameter
Symbol Minimum Maximum Unit Comment
Supply Voltage
V
cc
0.3
6.0
V
V
cc
, GND
Input Voltage
V
IN
GND0.3
V
cc
+0.3
V
TxD, SD
Output (External) Voltage
V
OUT
GND0.3
V
cc
+0.3
V
RxD
LED Current
I
LED
700
mA 20% duty cycle,
Ta=25 C,
t
ON
<90
S
Storage Temperature
T
ST
40
100
C
Solder Temperature
T
SOL
240
C
Table 3. Recommended Operating Conditions
Parameter
Symbol
Minimum
Maximum
Unit
Supply Voltage
V
cc
2.4
5.5
V
LED Voltage
V
LED
2.4
6.0
V
Ambient Operating Temperature
T
OP
30
85
C
Ambient Operating Temperature *
T
OP
40
85
C
Note: * ZHX1820TV115XHTR only
Table 4. Electrical Characteristics
Parameter
Symbol Condition
Min
Typical
Max
Unit
Remarks
High-Level Input Voltage
V
IH
0.6 V
cc
V
cc
+0.5
V
TXD, SD
Low-Level Input Voltage
V
IL
0.5
0.2 V
cc
V
TXD, SD
High-Level Output Voltage V
OH
2.2
V
RxD
Low-Level Output Voltage V
OL
0.4
V
RxD
Transmitter Current
I
LED
300
mA
Listening Current
I
CC
90
150
A
Receive Current
I
CC
90
150
A
ZHX1820
Slim SIR Top Look Transceiver
PS016005-0204
6
Figure 3 through Figure 6 show various electrical characteristics.
Figure 3. I
F
-Ie Characteristics (0)
Standby Current
I
STB
1
A
SD=V
cc
,
TxD=0 V
Optical Rise/Fall Time
t
Rr
, t
Rf
100
nS
RxD Pulse Width
t
PWA
SIR=115.2
Kbps
1.1
1.6
3.9
S
Power Shutdown Time
T
SD
1
S
Startup Time
T
STU
200
S
Receiver Latency
T
L
100
S
Trans. Radiant Intensity
I
E
I
LED
=260 mA
40
100
mW/sr
h,
v<(+15
)
Min. Threshold Irradiance
E
emin
V
cc
=3.3 V
2
3
W/cm
2
h,
v<(+15
)
Angle of Half Intensity
20
Hor. and
Vert.
Light Pulse Rise, Fall Time t
or
, t
of
40
nS
Optical Pulse Width
t
OPW
20
S
TxD="H"
Optical Overshoot
t
OPO
3
%
Peak Wavelength
P
870
nm
Unless otherwise noted: V
cc
=3.3 V, GND= 0 V, T
A
= 25 C
Table 4. Electrical Characteristics (Continued)
Parameter
Symbol Condition
Min
Typical
Max
Unit
Remarks
ZHX1820
Slim SIR Top Look Transceiver
PS016005-0204
7
Figure 4. I
F
-LEDA Characteristics (0)
Figure 5. Directive Characteristics (Emitting)
Figure 6. Directive Characteristics (Receiving)
ZHX1820
Slim SIR Top Look Transceiver
PS016005-0204
8
Mechanical Drawings
In order to achieve the lowest possible lead times, ZiLOG maintains two assembly
facilities. The mechanical drawings for these transceivers are shown in Figure 7
and Figure 8. These devices, which show minor mechanical differences, are func-
tionally equivalent in every way and meet all ZiLOG and IrDA standards and spec-
ifications. Although reels are never mixed, ZiLOG reserves the right to ship from
either facility in order to meet delivery requirements.
Figure 7. ZHX1820 Mechanical Drawing
TX
RX
1
2
3
4
5
6
1.325
1.650
2.650
2.725
2.675
2.370
2.580
1.750
0.450
3.875
2.325
0.775
1.55
LENS VIEW
CONTACTS VIEW
Pinout
(1) LED Anode
(2) TXD
(3) RXD
(4) SD
(5) VCC
(6) GND
0.80
0.80
0.80
0.80
1.55
1.425
1.325
Mounting Center
4.325
0.45
0.45
0.75
Top Look Solder Pad layout
0.700
0.900
0.850
SIDE VIEW
8.650
3.43 ref
3.545 ref
Emitting Center
Receiving Center
Note that this style has a smaller
emitter lens than receive lens
This style has optional
side solder vias (ground)
Tolerances for 0.x or 0.xx are +/- 0.25 mm
Tolerance for 0.xxx is +/- 0.13 mm
ZHX1820
Slim SIR Top Look Transceiver
PS016005-0204
9
Figure 8. Alternate ZHX1820 Mechanical Drawing
1
.
3
5
1
.
4
7
5
3
3.1
1.8
2
.
7
5
3
.
3
3
.
65
Units: mm
Tolerance: +/- 0.2
PIN FUNCTION PIN FUNCTION
1
GND
2
RXD
3
VCC
4
SD
5
6
LEDA
TXD
P1.550.15=7.750.1
0.7
3.875
(3.875)
0
.
4
7
5
(6) (5) (4) (3) (2) (1)
0
.
8
Note that this style has a larger
emitter lens than receive lens
RX
TX
Receiving Center
LENS VIEW
CONTACTS VIEW
Top Look Solder Pad layout
9.0 (ref.)
Emitting Center
This style does not
have side solder vias
SIDE VIEW
0.70
0.80
1.55
Mounting
Center
4.325
0.45
0.45
0.75
ZHX1820
Slim SIR Top Look Transceiver
PS016005-0204
10
Soldering and Cleaning Recommendations
Follow these recommendations to maintain the performance of the ZHX1820
transceiver.
Reflow Soldering
Reflow soldering paste is recommended:
Melting temperature: 178 C ~ 192 C
Composition: Sn 63%, Pb 37%
The recommended thickness of the metal mask is between 0.2 mm and
0.25 mm for screen printing.
Number of soldering times: 2 times maximum
The temperature profile at the top surface of ZHX1820, shown in Figure 9, is
recommended.
Figure 9. Temperature Profile at the Top Surface of ZHX1820
Manual Soldering
Use 63/37 or silver solder.
Use a soldering iron of 25 W or smaller. Adjust the temperature of the
soldering iron below 300 C.
Finish soldering within 3 seconds.
Handle only after ZHX1820 has cooled off.
ZHX1820
Slim SIR Top Look Transceiver
PS016005-0204
11
Cleaning
Perform cleaning after soldering under the following conditions:
Cleaning agent: Alcohol
Temperature and time: 30 seconds below 50 C or 3 minutes below 30 C
Ultrasonic cleaning: Below 20 W
Packing, Storage, and Baking Recommendations
Follow these recommendations to maintain the performance of the ZHX1820
transceiver.
Storage
To avoid moisture absorption, ZHX1820 reels must remain in the original,
unopened moisture-proof packing. Parts must be soldered within 72 hours after
unpacking. Reels that have been unpacked, but will not be soldered within 72
hours, must be stored in a desiccator.
Baking
Parts that have been stored over 12 months or unpacked over 72 hours must be
baked under the following guidelines.
Reels
60 C for 48 hours or more
Loose Parts
100 C for 4 hours or more
or
125 C for 2 hours or more
or
150 C for 1 hour or more
ZHX1820
Slim SIR Top Look Transceiver
PS016005-0204
12
Moisture-Proof Packing
In order to avoid moisture absorption during transportation and storage, ZHX1820
reels are packed in aluminum envelopes (see Figure 10) that contain a desiccant
with a humidity indicator. While this packaging is an impediment to moisture
absorption, it is by no means absolute, and no warranty is implied. The user should
store these parts in a controlled environment to prevent moisture entry. Please read
the label on the aluminum bag for indicator instructions.
Figure 10. ZHX1820 Packaging
ZHX1820
Slim SIR Top Look Transceiver
PS016005-0204
13
Taping Specifications
Figure 11 shows the reel dimensions for the ZHX1820; Figure 12 show the alter-
nate reel dimensions. Figure 13 shows the tape dimensions and configuration for
the ZHX1820; Figure 14 shows the alternate tape dimensions and configuration.
Figure 11. ZHX1820 Reel Dimensions (Unit: mm)
LABEL
PASTED
HERE
80 1 DIA.
2 0.5
17.5
+ 2.0
- 0.0
330 DIA.
2.0 0.5
13.0 0.5
21.0 0.8
R 1.0
DETAIL
Reel Dimensions
(Unit:mm)
2,000 units per reel
ZHX1820
Slim SIR Top Look Transceiver
PS016005-0204
14
Figure 12. Alternate ZHX1820 Reel Dimensions (Unit: mm)
(Unit: mm)
Tolerance: +0.2
ZHX1820
Slim SIR Top Look Transceiver
PS016005-0204
15
Figure 13. ZHX1820 Tape Dimensions and Configuration (Unit: mm)
ZHX1820
Slim SIR Top Look Transceiver
PS016005-0204
16
Figure 14. Alternate ZHX1820 Tape Dimensions and Configuration (Unit: mm)
ZHX1820 (alternate) orientation in the pocket of carrier tape.
Plated pad on the right side of the module.
Plated pad of
ZHX1820
on the right side.
Orientation to do
taping
Pocket of carrier
tape.
ZHX1820
Slim SIR Top Look Transceiver
PS016005-0204
17
Ordering Information
To order Top Look ZHX1820, use ZiLOG part number ZHX1820TV115THTR
(30 C to +85 C) or ZHX1820TV115XHTR (40 C to +85 C).
In order to ensure the lowest possible lead times, ZiLOG uses
two different fab sources for the transceiver IC and two different
packaging facilities for module assembly. Both of these ICs and
packaging facilities have been extensively tested and qualified
to meet the ZHX1820 transceiver specifications.
Note:
ZHX1820
Slim SIR Top Look Transceiver
PS016005-0204
18
Customer Feedback Form
If you experience any problems while operating the ZHX1820 transceiver, or if you note
any inaccuracies while reading this product specification, please copy and complete this
form, then mail or fax it to ZiLOG (see "Return Information," below). We also welcome
your suggestions!
Customer Information
Product Information
Return Information
ZiLOG
System Test/Customer Support
532 Race Street
San Jose, CA 95126-3432
Fax: (408) 558-8300
Web: www.zilog.com
Problem Description or Suggestion
Provide a complete description of the problem or your suggestion. If you are reporting a
specific problem, include all steps leading up to the occurrence of the problem. Attach
additional pages as necessary.
_______________________________________________________________________________
_______________________________________________________________________________
_______________________________________________________________________________
_______________________________________________________________________________
Name
Country
Company
Phone
Address
Fax
City/State/Zip
email
Serial # or Board Fab #/Rev #
Software Version
Document Number
Host Computer Description/Type
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