Microchip Technology Inc
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SY88923V

Status: In Production

Features:

  • 3.3V and 5V power supply options
  • Up to 2.5Gb/s operation
  • Low noise
  • Chatter-Free LOS Generation
  • Open Collector TTL LOS Output
  • TTL /EN Input
  • Differential PECL inputs for data
  • Single power supply
  • Designed for use with (Micrel-High-Bandwidth laser diode driver and controller)
  • Available in a tiny 10-pin MSOP (3mm) package
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Device Overview

Summary

The SY88923V limiting post amplifier with its high gain and wide bandwidth is ideal for use as a post amplifier in fiber-optic receivers with data rates up to 2.5Gb/s. Signals as small as 5mVp-p can be amplified to drive devices with PECL inputs. The SY88923V generates a chatter-free Loss of Signal (LOS) open collector TTL output. The SY88923V incorporates a programmable level detect function to identify when the input signal has been lost. This information can be fed back to the EN input of the device to maintain stability under loss of signal condition. Using LOSLVL pin, the sensitivity of the level detection can be adjusted. The LOSLVL voltage can be set by connecting a resistor divider between VCC and VREF. Figure 3 and Figure 4 show the relationship between input level sensitivity and the voltage set on LOSLVL. Figure 5 shows the relationship between input level sensitivity and resistor divider ratio.

Additional Features
    • 3.3V and 5V power supply options
    • Up to 2.5Gb/s operation
    • Low noise
    • Chatter-Free LOS Generation
    • Open Collector TTL LOS Output
    • TTL /EN Input
    • Differential PECL inputs for data
    • Single power supply
    • Designed for use with (Micrel-High-Bandwidth laser diode driver and controller)
    • Available in a tiny 10-pin MSOP (3mm) package
Parametrics
Name
Value
Part Type
Fiber Optic Post Amplifiers
Data Rate Capability
2.5
Data Input Type
PECL
Data Output Type
PECL
LOS/SD
LOS (TTL)
LOS/SD Gain
1x
RC Time Constant
4.6

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