产品说明
The MC100EP40 is a three-state phase-frequency detector intended for phase-locked loop applications which require a minimum amount of phase and frequency difference at lock. Advanced design significantly reduces the dead zone of the detector. For proper operation, the input edge rate of the R and V inputs should be less than 5 ns. The device is designed to work with a 3.3 V / 5 V power supply.
When Reference (R) and Feedback (FB) inputs are unequal in frequency and/or phase the differential UP (U) and DOWN (D) outputs will provide pulse streams which when subtracted and integrated provide an error voltage for control of a VCO.
When Reference (R) and Feedback (FB) inputs are 80 pS or less in phase difference, the Phase Lock Detect pin will indicate lock by a high state. The V
TX (V
TR, V
TRbar , V
TFB , V
TFBbar ) pins offer an internal termination network for 50 line impedance environment shown in Figure 2. An external sinking supply of V
CC-2 V is required on V
TX pin(s). If you short the two differential V
TR and V
TR (or V
TFB and V
TFBbar ) together, you provide a 100 termination resistance that is compatible with LVDS signal receiver termination. For more information on termination of logic devices, see AND8020.
The V
BB pin, an internally generated voltage supply, is available to this device only. For single-ended input conditions, the unused differential input is connected to V
BB as a switching reference voltage. V
BB may also rebias AC coupled inputs. When used, decouple V
BB and V
CC via a 0.01 F capacitor and limit current sourcing or sinkingto 0.5 mA. When not used, V
BB should be left open.
For more information on Phase Lock Loop operation, refer to AND8040.
Special considerations are required for differential inputs under No Signal conditio
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特性 |
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Maximum Frequency > 2 Ghz Typical
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Advanced High Band Output Swing of 400 mV
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Trise 97 pS Typical, Ffall 70 pS Typical
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The 100 Series Contains Temperature Compensation
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PECL Mode Operating Range: VCC = 3.0 V to 5.5 V with VEE = 0 V
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NECL Mode Operating Range: VCC = 0 V with VEE = -3.0 V to -5.5 V
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50Ω Internal Termination Resistor
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These are Pb-Free Devices
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