ISL837030, ISL83740
®
FN8013.5
Datasheet
May 2002
Modem Reference
Designs
Features
• Programmable modulation
The ISL837030 and ISL83740 Broadband Wireless Modem
Reference Designs support a wide range of modulation
orders and symbol rates.*
Both: QPSK, 8PSK, 16QAM, 32QAM
ISL83740 only: 64QAM, 128QAM
• Flexible data rates
ISL83740: up to 238Mbps
ISL837030: up to 160Mbps
In both Reference Designs, sophisticated coding,
equalization, and symbol recovery techniques are employed,
resulting in robust wireless link performance.
• Programmable symbol rates
The ISL837030 and ISL83740 Reference Designs support
high-capacity digital microwave radios with data rates up to
238Mbps (ISL83740) and 160Mbps (ISL837030). They
provide a flexible, high performance, economical solution for
fixed wireless applications.
• Reed Solomon (RS) encoding/decoding
• Concatenated coding using RS and PTCM inner code
• FCC and ETSI spectral mask compliance
• Powerful equalization
* Differences between the ISL837030 and ISL83740 are marked in text as
needed. Also see Release Notes on page 25.
Includes
• Sample ISL87060MIK Modulator and ISL87060DIK
Demodulator Chip Sets for development and test.
Benefits
• Eliminates the need to develop custom ASICs
• Complete Manufacturing Documentation Package: Bill of
Materials, Schematics, PCBA Fabrication Files, including
Gerber Files.
• Optimizes wireless link capacity and Bit Error Rate (BER)
performance
• Enables rapid prototyping and compliance testing
• Proven technology
• Test Documentation.
• Embedded Monitor and Control Software provides
comprehensive setup and test capabilities. Accepts
commands in binary or ASCII format.
• Optional Evaluation Kit supports demo requirements,
performance evaluation, and lab testing
Optional Evaluation Kit
The modem PCBA is mounted on an Evaluation Platform,
allowing the modem to be set up and tested in a standard lab
environment. Includes VHF and L-band IF Interfaces and a
sophisticated Graphical User Interface for Windows
operating systems. (ISL83700EVAL/ISL83740EVAL)
ISL87060MIK
Modulator/
Encoder
Differential
Baseband
Outputs
Data
LPF
DAC
Level
TrimDAC
Offset
ASYNC
Serial
Baseband
Loopback
Controller
FLASH
Modem PCBA
ISL87060DIK
Demodulator/
Decoder
Decimating
Matched
Filter
Differential
Baseband
Inputs
Data
ADC
LPF
FIGURE 1 Simplified Block Diagram
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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