Microchip Technology Inc
product primary image

SY88349ND

Status: In Production

Features:

  • <5ns SD assert (LOS deassert) time
  • Proprietary noise discriminator feature
  • Option to AUTO RESET or manual RESET LOS/SD output
  • Selectable LOS/SD option
  • Up to 2.5Gbps operation
  • Low-noise CML data outputs
  • 5mVPP input sensitivity
  • High-sensitivity LOS/SD signal detect
  • LVTTL LOS/SD output with an external pull-up resistor
  • Squelching function to maintain output stability
  • Programmable LOS/SD level set (LOS/SDLVL)
  • Single 3.3V power supply
  • Available in a 16-pin (3mm x 3mm) QFN package
View More
Overview
Documents
Development Environment
RoHS Information
Buy Now

Device Overview

Summary

The SY88349NDL is a high-sensitivity, burst-mode capable limiting post amplifier designed for optical line terminal (OLT) receiver applications. The SY88349NDL satisfies the strict timing restrictions of the GPON standards by providing ultra-fast loss-of-signal (LOS) or Signal-Detect (SD) output. Auto reset and manual reset options are provided to control LOS/SD output timing. For increased flexibility, this device also includes an option to select between LOS or SD output. The device can be connected to burst-mode capable transimpedance amplifiers (TIAs) using AC or DC coupling. The SY88349NDL generates a high-gain LOS or SD LVTTL output. A programmable LOS/SD level set pin (LOS/SDLVL) sets the sensitivity of the input amplitude detection. When LOS/SD SEL pin is left open or tied to VCC, JAM is active high, SD is selected and asserts high if the input amplitude rises above the threshold sets by LOS/SDLVL and de-asserts low otherwise. When LOS/SD SEL pin is set low or tied to GND, JAM is active low, LOS is selected and asserts low if the input amplitude rises above the threshold sets by LOS/SDLVL and de-asserts high otherwise. The LOS/SD output can be fed back to the JAM input to maintain output stability under an invalid signal conditions. Typically, 4dB  5dB SD hysteresis is provided to prevent chattering. The SY88349NDL also features a selectable proprietary noise discriminator that aids by filtering out input signals that do not qualify as a 2.5Gbps GPON preamble signal in the initial startup phase. This feature minimizes false SD asserts that can be triggered by random noise. The SY88349NDL operates from a single +3.3V power supply, over temperatures ranging from –40°C to +85°C. With its wide bandwidth and high gain, signals up to 2.5Gbps and as small as 5mVpp can be amplified to drive devices with CML inputs.

Additional Features
    • <5ns SD assert (LOS deassert) time
    • Proprietary noise discriminator feature
    • Option to AUTO RESET or manual RESET LOS/SD output
    • Selectable LOS/SD option
    • Up to 2.5Gbps operation
    • Low-noise CML data outputs
    • 5mVPP input sensitivity
    • High-sensitivity LOS/SD signal detect
    • LVTTL LOS/SD output with an external pull-up resistor
    • Squelching function to maintain output stability
    • Programmable LOS/SD level set (LOS/SDLVL)
    • Single 3.3V power supply
    • Available in a 16-pin (3mm x 3mm) QFN package
Parametrics
Name
Value
Part Type
Fiber Optic Burst Mode Post Amplifiers
Data Rate Capability
2.5
Data Input Type
CML/PECL
Data Output Type
CML
LOS/SD
SD & LOS (TTL)
LOS/SD Gain
1x

Documents

Jump to:

Data Sheets

11/11/2015
429KB

Development tools data is currently unavailable.

RoHS Information

Part Number
Device Weight
Shipping Weight
Lead Count
Package Type
Package Width
Solder Composition
JEDEC Indicator
RoHS
China EFUP
SY88349NDLMG-TR
0.021300
0.801700
16
VQFN
3x3x0.9mm
NiPdAu
e4
Rohs icon
efup china icon
SY88349NDLMG
0.021300
0.050000
16
VQFN
3x3x0.9mm
NiPdAu
e4
Rohs icon
efup china icon
To see a complete listing of RoHS data for this device, please Click here
Shipping Weight = Device Weight + Packing Material weight. Please contact sales office if device weight is not available.

Buy

Grid
View
Table
View
Filter:
Apply
Clear
Product
Leads
Package Type
Temp Range
Packing Media
5K Pricing
Buy