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SY88149CL

Status: In Production

Features:

  • Single 3.3V power supply
  • Fast SD enable/disable time
  • 622Mbps to 1.25Gbps operation
  • Low-noise PECL data outputs
  • High-gain SD
  • Chatter-free Open-Collector TTL signal detect (SD) output with internal 4.75kΩ pull-up resistor
  • TTL EN input
  • Programmable SD level set (SD LVL)
  • Available in a tiny 10-pin MSOP package
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Overview
Documents
Development Environment
RoHS Information
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Device Overview

Summary

The SY88149CL is a high-sensitivity limiting post amplifier designed for use in fiber-optic receivers. These devices connect to typical transimpedance amplifiers (TIAs). The linear signal output from TIAs can contain significant amounts of noise and may vary in amplitude over time. The SY88149CL quantizes these signals and outputs PECL level waveforms. The SY88149CL 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 with data rates up to 1.25Gbps, and as small as 5mVPP, can be amplified to drive devices with PECL inputs. The SY88149CL generates a high-gain signal-detect (SD) open-collector TTL output. The SD function has a high gain input stage for increased sensitivity. A programmable Signal Detect level set pin (SD LVL) sets the sensitivity of the input amplitude detection. SD asserts high if the input amplitude rises above the threshold set by SD LVL and de-asserts low otherwise. The enable input (EN) de-asserts the true output signal without removing the input signal. The SD output can be fed back to the EN input to maintain output stability under a loss-of-signal condition. Typically, 3.4dB SD hysteresis is provided to prevent chattering.

Additional Features
  • Single 3.3V power supply
  • Fast SD enable/disable time
  • 622Mbps to 1.25Gbps operation
  • Low-noise PECL data outputs
  • High-gain SD
  • Chatter-free Open-Collector TTL signal detect (SD) output with internal 4.75kΩ pull-up resistor
  • TTL EN input
  • Programmable SD level set (SD LVL)
  • Available in a tiny 10-pin MSOP package
Parametrics
Name
Value
Part Type
Continuous Mode
Data Rate Capability
1.25
Power Supply (V)
3.3
Data Input Type
PECL
Data Output Type
PECL
LOS/SD
SD (TTL)
LOS/SD Gain
4X
RC Time Constant
1X
Hysteresis Typ (dB)
3.5

Documents

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Data Sheet

11/11/2015
305KB

User Guides


Development tools data is currently unavailable.

RoHS Information

Part Number
Device Weight (g)
Shipping Weight (Kg)
Lead Count
Package Type
Package Width
Solder Composition
JEDEC Indicator
RoHS
China EFUP
SY88149CLKG
0.024500
0.135600
10
MSOP
3x3x1.0mm
NiPdAu
e4
SY88149CLKG-TR
0.024500
0.431180
10
MSOP
3x3x1.0mm
NiPdAu
e4
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.

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