CDCLVD1216 Datasheet, PDF (1/20 Pages) Texas Instruments – 2:16 Low Additive Jitter LVDS Buffer

CDCLVD1216
www.ti.com
SCAS900B – OCTOBER 2010 – REVISED JANUARY 2011
2:16 Low Additive Jitter LVDS Buffer
Check for Samples: CDCLVD1216
FEATURES
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• 2:16 Differential Buffer
• Low Additive Jitter: <300 fs RMS in
10 kHz to 20 MHz
• Low Output Skew of 55 ps (Max)
• Universal Inputs Accept LVDS, LVPECL,
LVCMOS
• Selectable Clock Inputs Through Control Pin
• 16 LVDS Outputs, ANSI EIA/TIA-644A Standard
Compatible
• Clock Frequency up to 800 MHz
• 2.375–2.625V Device Power Supply
• LVDS Reference Voltage, V_{AC_REF}, Available for
Capacitive Coupled Inputs
• Industrial Temperature Range –40°C to 85°C
• Packaged in 7mm × 7mm 48-Pin QFN (RGZ)
• ESD Protection Exceeds 3 kV HBM, 1 kV CDM
APPLICATIONS
• Telecommunications/Networking
• Medical Imaging
• Test and Measurement Equipment
• Wireless Communications
• General Purpose Clocking
DESCRIPTION
The CDCLVD1216 clock buffer distributes one of two
selectable clock inputs (IN0, IN1) to 16 pairs of
differential LVDS clock outputs (OUT0, OUT15) with
minimum skew for clock distribution. The
CDCLVD1216 can accept two clock sources into an
input multiplexer. The inputs can either be LVDS,
LVPECL, or LVCMOS.
The CDCLVD1216 is specifically designed for driving
50 Ω transmission lines. If driving the inputs in single
ended mode, the appropriate bias voltage (V_{AC_REF})
should be applied to the unused negative input pin.
The IN_SEL pin selects the input which is routed to
the outputs. If this pin is left open it disables the
outputs (static). The part supports a fail safe function.
It incorporates an input hysteresis, which prevents
random oscillation of the outputs in absence of an
input signal.
The device operates in 2.5 V supply environment and
is characterized from –40°C to 85°C (ambient
temperature). The CDCLVD1216 is packaged in
small 48-pin, 7mm × 7mm QFN package.
125 MHz
125 MHz
Oscillator
IN_ SEL
CDCLVD1216
LVDS Buffer
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Figure 1. Application Example
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PRODUCTION DATA information is current as of publication date.
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