Instrukcja obsługi Microchip SY88403BL


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SY88403BL
3.3V 4.25Gbps CML Low-Power Limiting
Post Amplifier with TTL LOS
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944 0800 • fax + 1 (408) 4 1000 • http://www.micrel.com- 74-
8November 200
M9999 111808- -F
hbwhelp@micrel.com or (408) 955-1690
General Description
The SY88403BL is a low power limiting post amplifier -
optimized for copper applications. The device
connects 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 SY88403BL quantizes these
signals and outputs typically 800mVPP -voltage limited
waveforms.
The SY88403BL operates from a single +3.3V ±10%
power supply, over an industrial temperature range of
40°C to +85°C. With its wide bandwidth and high
gain, signals with data rates up to 4.25Gbps and as
small as 5mVPP can be amplified to drive devices with
CML inputs or AC coupled PECL inputs. -
The SY88403BL incorporates a loss signal (LOS) -of-
open pull up -collector TTL output with internal 4.75kΩ -
resistor. A programmable loss signal level set pin -of-
(LOSLVL) sets the sensitivity of the input amplitude
detection. LOS asserts high if the input amplitude falls
below the threshold set by LOSLVL and de-asserts
low otherwise. LOS can be fed back to the enable bar
(/EN) input to maintain output stability under a loss of
signal condition. /EN de asserts the true output signal -
without removing the input signal. Typically, 3.5dB
LOS hysteresis is provided to prevent chattering.
All support documentation can be found on Micrel’s
web site at: www.micrel.com.
Typical Performance
Features
- Multi rate up to 4.25Gbps operation
5mVPP input sensitivity
Low noise 50Ω CML data outputs
800mVpp output swing
60ps edge rates
1psRMS typ. random jitter
10psPP typ. deterministic jitter
- - - Chatter free Loss of Signal (LOS) output
3.5dB electrical hysteresis
-OC TTL output with internal 4.75kΩ pull-up
resistor
Programmable LOS sensitivity using single
external resistor
Internal 50Ω data input termination
TTL /EN input allows feedback from LOS
Wide operating range:
Single 3.3V ±10% power supply
Industrial temperature range: 40°C to +85°C
- - - Available in a 10 pin EPAD MSOP and 16 pin QFN
package
Applications
1.062Gbps, 2.125Gbps and 4.25Gbps Fibre
Channel
Cable driver
Small form factor (SFF) and small form factor
pluggable (SFP) transceivers
- High gain line driver and line receiver
Markets
Copper interconnect
Datacom and telecom
Storage area network (SAN)


Specyfikacje produktu

Marka: Microchip
Kategoria: nieskategoryzowany
Model: SY88403BL

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