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LMX2323 Datasheet(PDF) 4 Page - National Semiconductor (TI) |
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LMX2323 Datasheet(HTML) 4 Page - National Semiconductor (TI) |
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4 / 12 page  Electrical Characteristics (Continued) V CC = 3.0V, VP = 3.0V; −40˚C < TA < 85˚C except as specified. Symbol Parameter Conditions Min Typ Max Units MICROWIRE TIMING t CS Data to Clock Set Up Time See Data Input Timing 50 ns t CH Data to Clock Hold Time See Data Input Timing 10 ns t CWH Clock Pulse Width High See Data Input Timing 50 ns t CWL Clock Pulse Width Low See Data Input Timing 50 ns t ES Clock to Enable Set Up Time See Data Input Timing 50 ns t EW Enable Pulse Width See Data Input Timing 50 ns Note 3: This ICC-PWDN represents CLK, DATA, LE and CE being tied to either higher than 0.8 VCC or lower than 0.2 VCC. Note 4: Phase noise is measured 1 kHz off from the carrier frequency. Comparison frequency is 200 kHz. OSCIN frequency is 13 MHz. Note 5: Except fIN and OSCIN. Note 6: Typical values are determined from measurements on the reference evaluation boards. A 3 dB (3 sigma) degradation is estimated from statistical distribution in manufacturing. Units will NOT be tested in production. Charge Pump Current Specification Definitions DS101362-4 I1 = CP sink current at VCPo =VP − ∆V I2 = CP sink current at VCPo =VP/2 I3 = CP sink current at VCPo = ∆V I4 = CP source current at VCPo =VP − ∆V I5 = CP source current at VCPo =VP/2 I6 = CP source current at VCPo = ∆V ∆V = Voltage offset from positive and negative rails. Dependent on VCO tuning range relative to VCC and ground. Typical values are between 0.5V and 1.0V. 1. ICPo vs VCPo = Charge Pump Output Current magnitude variation vs Voltage = [1⁄2 * {|I1| − |I3|}] / [1⁄2 * {|I1| + |I3|}] * 100% and [1⁄2 * {|I4| − |I6|}] / [1⁄2 * {|I4| + |I6|}] * 100% 2. ICPo-sink vs ICPo-source = Charge Pump Output Current Sink vs Source Mismatch = [|I2| − |I5|] / [1⁄2 * {|I2| + |I5|}] * 100% 3. ICPo vs TA = Charge Pump Output Current magnitude variation vs Temperature = [|I2 @ temp| − |I2 @ 25˚C|] / |I2 @ 25˚C| * 100% and [|I5 @ temp| − |I5 @ 25˚C|] / |I5 @ 25˚C| * 100% www.national.com 4 |
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