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CDCM7005ZVAR 数据表(PDF) 9 Page - Texas Instruments |
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CDCM7005ZVAR 数据表(HTML) 9 Page - Texas Instruments |
9 / 45 page CDCM7005 www.ti.com SCAS793E – JUNE 2005 – REVISED FEBRUARY 2013 DEVICE CHARACTERISTICS (continued) over recommended operating free-air temperature range (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT Load see Figure 13, all outputs have the 20 same divider ratio tsk(o) LVPECL output skew(5) ps Load see Figure 13, outputs have 50 different divider ratios tr / tf Rise and fall time 20% to 80% of VOUTPP, see Figure 9 120 170 220 ps Input capacitance at VCXO_IN, CI 1.5 pF VCXO_IN LVCMOS-TO-LVPECL Output skew between LVCMOS and Cross point to VCC/2; load, tsk(P_C) 1.7 2 2.4 ns LVPECL outputs, see (7) and Figure 10 see Figure 12 and Figure 13 PLL ANALOG LOCK IOH High-level output current VCC = 3.6 V, VO = 1.8 V –110 µA IOL Low-level output current VCC = 3.6 V, VO = 1.8 V 110 µA High-impedance state output current IOZH LOCK VO = 3.6 V (PD is set low) 45 65 µA for PLL LOCK output(8) High-impedance state output current IOZL LOCK VO = 0 V (PD is set low) ±5 µA for PLL LOCK output(8) VIT+ Positive input threshold voltage VCC = min to max VCC×0.55 V VIT– Negative input threshold voltage VCC = min to max VCC×0.35 V PHASE DETECTOR fCPmax Maximum charge pump frequency Default PFD pulse width delay 100 MHz CHARGE PUMP Charge pump sink/source current ICP VCP = 0.5 VCC_CP ±0.2 ±3 mA range (9) ICP3St Charge pump 3-state current 0.5 V < VCP < VCC_CP – 0.5 V 10 nA VCP = 0.5 VCC_CP, internal reference 10% resistor, SPI default settings ICPA ICP absolute accuracy VCP = 0.5 VCC_CP, external reference resistor 12 k Ω (1%) at I_REF_CP, SPI 5% default settings 0.5 V < VCP < VCC_CP – 0.5 V, SPI ICPM Sink/source current matching 2.5% default settings IVCPM ICP vs VCP matching 0.5 V < VCP < VCC_CP – 0.5 V 5% (7) The phase of LVCMOS is lagging in reference to the phase of LVPECL. (8) Lock output has an 80-k Ω pulldown resistor. (9) Defined by SPI settings. Copyright © 2005–2013, Texas Instruments Incorporated Submit Documentation Feedback 9 Product Folder Links :CDCM7005 |
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