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LMK1D1208RHDR PDF预览

LMK1D1208RHDR

更新时间: 2024-11-08 02:50:47
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德州仪器 - TI /
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35页 1981K
描述
LMK1D120x Low Additive Jitter LVDS Buffer

LMK1D1208RHDR 数据手册

 浏览型号LMK1D1208RHDR的Datasheet PDF文件第2页浏览型号LMK1D1208RHDR的Datasheet PDF文件第3页浏览型号LMK1D1208RHDR的Datasheet PDF文件第4页浏览型号LMK1D1208RHDR的Datasheet PDF文件第5页浏览型号LMK1D1208RHDR的Datasheet PDF文件第6页浏览型号LMK1D1208RHDR的Datasheet PDF文件第7页 
LMK1D1204, LMK1D1208  
SNAS815A – DECEMBER 2020 – REVISED AUGUST 2021  
LMK1D120x Low Additive Jitter LVDS Buffer  
1 Features  
3 Description  
High-performance LVDS clock buffer family with 2  
inputs and 4 (2:4) or 8 (2:8) outputs.  
Output frequency up to 2 GHz.  
Supply voltage: 1.71 V to 3.465 V  
Low additive jitter: < maximum 60 fs RMS in 12-  
kHz to 20-MHz at 156.25 MHz  
– Very low phase noise floor: –164 dBc/Hz  
(typical)  
Very low propagation delay: < 575 ps maximum  
Output skew: 20 ps maximum  
Universal inputs accept LVDS, LVPECL, LVCMOS,  
LP-HCSL, HCSL and CML inputs  
LVDS reference voltage, VAC_REF, available for  
capacitive-coupled inputs  
Industrial temperature range: –40°C to 105°C  
Packages available:  
– LMK1D1204: 3-mm × 3-mm, 16-pin VQFN  
(RGT)  
– LMK1D1208: 5-mm × 5-mm, 28-pin VQFN  
(RHD)  
The LMK1D120x clock buffer distributes one of two  
selectable clock inputs (IN0 and IN1) to 4 or 8 pairs  
of differential LVDS clock outputs (OUT0 through  
OUT7) with minimum skew for clock distribution. The  
LMK1D12x family can accept two clock sources into  
an input multiplexer. The inputs can either be LVDS,  
LVPECL, LP-HCSL, HCSL, CML or LVCMOS.  
The LMK1D12x is specifically designed for driving 50-  
Ω transmission lines. In case of driving the inputs in  
single-ended mode, the appropriate bias voltage as  
shown in Figure 8-6 must 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 (logic low). The part supports a fail-safe  
function. The device further incorporates an input  
hysteresis which prevents random oscillation of the  
outputs in the absence of an input signal.  
The device operates in 1.8-V or 2.5-V or 3.3-V  
supply environment and is characterized from –40°C  
to 105°C (ambient temperature). The LMK1D12x  
package variant is shown in the table below:  
2 Applications  
Telecommunications and networking  
Medical imaging  
Test and measurement  
Wireless infrastructure  
Pro audio, video and signage  
Device Information  
PART NUMBER(1)  
LMK1D1204  
PACKAGE  
VQFN (16)  
VQFN (28)  
BODY SIZE (NOM)  
3.00 mm × 3.00 mm  
5.00 mm × 5.00 mm  
LMK1D1208  
(1) For all available packages, see the orderable addendum at  
the end of the data sheet.  
ADC CLOCK  
F1 MHz  
100 Ω  
156.25 MHz  
Oscillator  
LMK1D 12XX  
LVDS Buffer  
IN_SEL  
FPGA CLOCK  
100 Ω  
Application Example  
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,  
intellectual property matters and other important disclaimers. PRODUCTION DATA.  
 
 
 

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