ADCLK954

更新时间： 2024-11-24 06:36:19

品牌	Logo	应用领域
亚德诺 - ADI		半导体时钟
页数	文件大小	规格书
12页	294K
描述
Two Selectable Inputs, 12 LVPECL Outputs, SiGe Clock Fanout Buffer

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ADCLK954 数据手册

Two Selectable Inputs, 12 LVPECL Outputs,

SiGe Clock Fanout Buffer

ADCLK954

FEATURES

FUNCTIONAL BLOCK DIAGRAM

2 selectable differential inputs

4.8 GHz operating frequency

75 fs rms broadband random jitter

On-chip input terminations

3.3 V power supply

LVPECL

ADCLK954

APPLICATIONS

Low jitter clock distribution

Clock and data signal restoration

Level translation

REFERENCE

REF

Wireless communications

Wired communications

Medical and industrial imaging

ATE and high performance instrumentation

V 0

CLK0

GENERAL DESCRIPTION

V 1

The ADCLK954 is an ultrafast clock fanout buffer fabricated on

the Analog Devices, Inc., proprietary XFCB3 silicon germanium

(SiGe) bipolar process. This device is designed for high speed

applications requiring low jitter.

CLK1

The device has two selectable differential inputs via the IN_SEL

control pin. Both inputs are equipped with center tapped,

differential, 100 Ω on-chip termination resistors. The inputs

accept dc-coupled LVPECL, CML, 3.3 V CMOS (single-ended),

and ac-coupled 1.8 V CMOS, LVDS, and LVPECL inputs. A

IN_SEL

REFERENCE

REF

_REFx pin is available for biasing ac-coupled inputs.

The ADCLK954 features 12 full-swing emitter coupled logic

(ECL) output drivers. For LVPECL (positive ECL) operation,

bias V_CCto the positive supply and V_EEto ground. For ECL

operation, bias V_CCto ground and V_EEto the negative supply.

Q10

Q11

The output stages are designed to directly drive 800 mV each

side into 50 Ω terminated to V_CC− 2 V for a total differential

output swing of 1.6 V.

Figure 1.

The ADCLK954 is available in a 40-lead LFCSP and specified

for operation over the standard industrial temperature range of

−40°C to +85°C.

Rev. A

Information furnished by Analog Devices is believed to be accurate and reliable. However, no

responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other

rights of third parties that may result from its use. Specifications subject to change without notice. No

license is granted by implication or otherwise under any patent or patent rights of Analog Devices.

Trademarks and registeredtrademarks are theproperty of their respective owners.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781.329.4700

Fax: 781.461.3113

www.analog.com

12 3 4 5 6 7...12

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