Overview
Description
The ISL1557 is a dual operational amplifier designed for VDSL2 and ADSL line driving in DMT based solutions. This device features a high drive capability of 750mA while consuming only 6mA of supply current per amplifier and operating from a single 4. 5V to 12V supply. The driver achieves a typical distortion of -80dBc at 150kHz into a 25Ω load. The ISL1557 is available in the thermally-enhanced 16 Ld QFN and 10 Ld HMSOP package and is specified for operation across -40°C to +85°C (IRZ, IUEZ) or -40°C to +125°C (FRZ) temperature ranges. The ISL1557 has control pins C0 and C1 for controlling the bias and enable/disable of the outputs. These controls allow for lowering the power to fit the performance/power ratio for the application. The ISL1557 is ideal for ADSL2+, SDSL, HDSL2, and VDSL line driving applications, including both 14. 5dBm and 21dBm applications.
Features
- Full-range industrial temperature (FRZ only): -40°C to +125°C
- 21dBm output power capability
- Drives up to 750mA from a +12V supply
- 20VP-P differential output drive into 21Ω
- -80dBc typical driver output distortion at full output at 150kHz
- -75dBc typical driver output distortion at 4MHz
- -71dBc typical driver output distortion at 10MHz
- -75dBc typical driver output distortion at 17MHz
- Low quiescent current of 6mA per amplifier
- Supply range
- ISL1557IRZ, ISL1557FRZ: ±2.25V to ±6V, 4.5V to 12V
- ISL1557IUEZ: 4.5V to 12V
- 300MHz bandwidth
- Thermal shutdown
- Pb-free (RoHS compliant)
Applications
Applications
- VDSL2 line drivers
- Power line communications line drivers
- ADSL2+ CPE line driving
- GSHDSL and HDSL2 line drivers
Documentation
| Title | Type | Date | |
|---|---|---|---|
PDF984 KB
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Datasheet
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PDF2.06 MB
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Application Note
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PDF252 KB
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Application Note
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PDF1.17 MB
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End Of Life Notice
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PDF363 KB
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Product Advisory
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PDF169 KB
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Product Change Notice
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PDF98 KB
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Product Change Notice
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PDF135 KB
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Product Change Notice
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PDF180 KB
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Product Change Notice
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PDF117 KB
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Product Change Notice
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Design & Development
Software & Tools
Boards & Kits
Boards & Kits
xDSL Differential Line Driver Evaluation Board
The ISL1557IRZ-EVAL evaluation board is used to evaluate the features of the ISL1557 dual operational amplifier which is ideal for ADSL2+, SDSL, HDSL2, and VDSL line...
Featured Documents:
Models
ECAD Models
Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on products in the Product Options table. If a symbol or model isn't available, it can be requested directly from the website.
Product Options
Processing table
| QFN | Tube | 900 | Get Samples, | |
ISL1557FRZ-T7 Active Samples Available |
QFN | Reel | 1000 | Get Samples, |
| QFN | Tube | 900 | Get Samples, | |
| QFN | Reel | 3000 |
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