ZHX2022
FIR Transceiver
Product Specification
PS021802-1005
ZiLOG Worldwide Headquarters • 532 Race Street • San Jose, CA 95126-3432
www.ZiLOG.com
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
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
©2005 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applications, or technology described is intended to suggest possible uses and may be superseded.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.
PS021802-1005
ZHX2022
FIR Transceiver
iii
Table of Contents
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Parts Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Pinout and Pin Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Electrical and Timing Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Recommended Circuit Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
I/O and Software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Mode Switching . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Setting to the High Bandwidth Mode (0.576 Mbit/s to 4.0 Mbit/s) . . . . . . . . 14
Setting to the Lower Bandwidth Mode (2.4 kbit/s to 115.2 kbit/s) . . . . . . . . 15
Recommended SMD Pad Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
ZHX2022 Soldering and Cleaning Recommendations . . . . . . . . . . . . . . . . . . .
Reflow Soldering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Manual Soldering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
16
16
16
16
Current Derating Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Mechanical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Taping Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Customer Feedback Form . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Customer Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Product Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Return Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Problem Description or Suggestion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
22
22
22
22
22
PS021802-1005
ZHX2022
FIR Transceiver
iv
List of Figures
Figure 1.
Figure 2.
Figure 3.
Figure 4.
Figure 5.
Figure 6.
Figure 7.
Figure 8.
Figure 9.
Figure 10.
FIR Transceiver Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Pinout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Application Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Mode Switching Timing Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Pad Layout (mm) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Temperature Derating Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Package Dimensions in mm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Reel Dimensions in mm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Tape Dimensions in mm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Tape Dimensions in mm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
List of Tables
Table 1.
Table 2.
Table 3.
Table 4.
Table 5.
Table 6.
Table 7.
Table 8.
Pin Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Eye Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Electrical Characteristics—Transceiver . . . . . . . . . . . . . . . . . . . . . . . 6
Optoelectronic Characteristics—Receiver . . . . . . . . . . . . . . . . . . . . . 8
Optoelectronic Characteristics—Transmitter . . . . . . . . . . . . . . . . . . . 9
Recommended Application Circuit Components . . . . . . . . . . . . . . . 13
Truth Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
PS021802-1005
ZHX2022
FIR Transceiver
1
Description
Whether you need to mount the IrDA transceiver so that its communication is par-
allel or perpendicular to the plane of the PCB, the ZiLOG ZHX2022 is the solution
for applications in portable products, such as USB Adapters, notebook PCs, print-
ers, mobile phones, digital cameras, handheld devices, or personal data assis-
tants (PDAs). Designed to support all IrDA data rates up to 4 Mbits/second as well
as LocalTalk™ and Sharp ASK™ modes, the transceiver combines an infrared
emitting diode (IRED) emitter, a PIN photodiode detector, an IRED driver, and an
integrated AGC (Automatic Gain Control) and amplification receive circuit in a sin-
gle, miniature package.
The ZiLOG ZHX2022 provides an efficient implementation of the IrDA-Data 1.4
standard in a small footprint format. Application circuit space is also minimized, as
only three external components (current-limiting resistor, terminating resistor, and
a decoupling capacitor) are required to implement a complete IrDA transceiver
solution.
The ZHX2022 is capable of both mode select and legacy-mode bandwidth
switching.
Features
•
•
•
•
•
•
•
Supply voltage 2.7 V to 5.5 V, operating idle current (receive mode) < 3 mA,
shutdown current < 5 µA over full temperature range
Surface mount package, top and side view, 9.7 mm x 4.7 mm x 4.0 mm
Operating temperature: –30
°
C to 85
°
C
Storage temperature: –40
°
C to 85
°
C
Transmitter wavelength typically 886 nm, supporting IrDA® and Remote
Control
Tri-state-receiver output, floating in shut down with a weak pull-up
Eye safety class 1 (IEC60825-1, ed. 2001), limited LED on-time, LED current
is controlled, no single fault to be considered
PS021802-1005
京公网安备 11010802033920号
EEWORLD
