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ACS1790IMLT The Semtech ACS1790IMLT is a high-performance PLL frequency synthesizer with integrated VCO, providing LVPECL and LVCMOS outputs. It operates from a 3.0V to 3.6V supply and is housed in a 24-QFN package.
Mfr Part #:

ACS1790IMLT

Available from 1 distributors
Mfr Name: Semtech
Semtech
The Semtech ACS1790IMLT is a high-performance PLL frequency synthesizer with integrated VCO, providing LVPECL and LVCMOS outputs. It operates from a 3.0V to 3.6V supply and is housed in a 24-QFN package.
✓ Total Stock: 114 pcs

ACS1790IMLT Available from 1 distributor

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114 pcs
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ACS1790IMLT Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Differential
Differential Output
Divider
Frequency
Halogen Free
Input
Input Frequency
Input Type
Interface
Mounting Type
Number of Circuits
Number of Pins
Operating Temperature
Output
PLL
Ratio
Supplier Device Package
Type
Voltage
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ACS1790IMLT Description

Short technical summary and product information.

The Semtech ACS1790IMLT is a high-performance, low phase noise, programmable frequency synthesizer with an integrated VCO, loop filter, and phase-frequency detector. It accepts input clock frequencies of 10 MHz, 12.8 MHz, 20 MHz, or 25 MHz and generates two outputs: a high-frequency LVPECL output from 10 MHz to 200 MHz and a low-frequency LVCMOS output from 2 kHz to 125 MHz at 1.8V, 2.5V, or 3.3V logic levels.

 

The device is optimized for Synchronous Ethernet, SONET, and SDH applications, meeting RMS jitter requirements for Gigabit Ethernet, 10 Gigabit Ethernet, and OC-48/STM-16. Typical jitter performance is 0.56 ps for OC-48/STM-16, 0.15 ps for 1G Ethernet, 0.11 ps for XAUI, and 0.29 ps for 10G Ethernet. The integrated VCO operates from 2.3 GHz to 2.7 GHz, and the device includes a bypassable PLL and output divider.

 

The ACS1790IMLT is fully programmable via an I2C interface and operates over a -40°C to 85°C temperature range. It is supplied in a 24-VFQFN exposed pad package measuring 4mm x 4mm, suitable for surface mount assembly. The device is RoHS3 compliant, halogen free, and lead free.

ACS1790IMLT Quick Information

Product Type: Clock Generator, PLL, Frequency Synthesizer
Canonical Name: Semtech ACS1790IMLT PLL Frequency Synthesizer with Integrated VCO
Subcategory: Clock Generators

ACS1790IMLT Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected
Lead Free: Pb-Free

ACS1790IMLT Features

  • Integrated VCO with 2.3-2.7 GHz range.
  • LVPECL output from 10 MHz to 200 MHz.
  • LVCMOS output from 2 kHz to 125 MHz.
  • I2C programmable interface for configuration.
  • RoHS3 compliant and halogen free.

ACS1790IMLT Applications

  • Suitable for Synchronous Ethernet clock generation.
  • Ideal for SONET and SDH timing applications.
  • Used in Gigabit and 10 Gigabit Ethernet systems.
  • Applicable in XAUI and OC-48/STM-16 designs.

ACS1790IMLT FAQs

7 frequently asked questions generated from this part’s specifications.
What is the operating voltage range of the ACS1790IMLT?

The core supply voltage range is 3.0 V to 3.6 V.

What package does the ACS1790IMLT come in?

It is supplied in a 24-VFQFN exposed pad package (24-QFN, 4x4 mm).

What is the operating temperature range of the ACS1790IMLT?

The operating temperature range is -40°C to 85°C.

Is the ACS1790IMLT RoHS compliant?

Yes, it is RoHS3 compliant as verified in the datasheet.

What output frequencies does the ACS1790IMLT support?

It provides LVPECL output from 10 MHz to 200 MHz and LVCMOS output from 2 kHz to 125 MHz.

What interface is used to program the ACS1790IMLT?

The device is programmed via an I2C interface.

What is the typical jitter performance for OC-48 applications?

Typical RMS jitter is 0.56 ps for OC-48/STM-16 (12 kHz – 20 MHz).

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