Product Details

describe:

The LMK1D210 x clock buffers distribute the two clock inputs (IN0 and IN1) to a total of 16 pairs of differential LVDS clock outputs (OUT0 to OUT15) in the LMK1D2108 and 12 pairs of clock outputs (OUT0 to OUT11) in the LMK1D2106 clock distribution. Each buffer block consists of one input and up to 6 (LMK1D2106) or 8 (LMK1D2108) LVDS outputs. Inputs can be LVDS, LVPECL, HCSL, CML or LVCMOS.

The LMK1D210x is designed to drive 50Ω transmission lines. When driving the input in single-ended mode, apply an appropriate bias voltage to the unused negative input pin.

Using the control pin (EN), the output group can be enabled or disabled. If this pin is left open, both bank outputs are enabled. If the control pin is switched to logic "0", both group outputs are disabled (static logic "0"). If the control pin is toggled to logic "1", the outputs of one group are disabled and the outputs of the other group are enabled. The part also supports fail-safe features. The ACT361US-T device also includes an input hysteresis that prevents random oscillation of the output in the absence of an input signal.

The device operates from a 1.8-V, 2.5-V, or 3.3-V power supply and is characterized from –40°C to 105°C (ambient).

characteristic:

●High-performance LVDS clock buffer family: up to 2 GHz

—Dual 1:6 differential buffers

—Dual 1:8 differential buffers

●Supply voltage: 1.71 V to 3.465 V

Low additive jitter: < 60 fs RMS maximum, 12-kHz to 20-MHz, 156.25 MHz

●Very low phase noise floor: -164 dBc/Hz (typ.)

Very low propagation delay: < 575 ps maximum

●Output skew: 20 ps max

●High-swing LVDS (boost mode): When AMP_SEL = 1, the typical value of VOD is 500mV

●Use EN pin to enable/disable group

● Universal input accepts LVDS, LVPECL, LVCMOS, HCSL and CML signal levels

LVDS reference voltage V AC_REF can be used for capacitively coupled input

●Industrial temperature range: –40°C to 105°C

packaged in

— LMK1D2106: 6mm x 6mm, 40-pin VQFN (RHA)

— LMK1D2108: 7mm x 7mm, 48-pin VQFN (RGZ)

parameter:

Function: Clock Buffer, Differential

Operating temperature range (°C): -40 to 105