PDF《HMC704LP4E》

19 bit , Even values Only

32 1,048,574 RF divider 4GHz Integer Mode

19 bit , All values

16 524,287 RF divider 8GHz Fractional Mode

19 bit , Even values Only

40 1,048,566 RF divider 4GHz Fractional Mode

19 bit , All values

20 524,283 [1] Frequency is guaranteed across process, voltage and temperature from -400 C to

850 C. [2] With high charge-pump current, +12dBm 100MHz sine reference [3] Fractional FOM degrades about 3dB/octave for prescaler input frequencies below 2GHz [4] Using 50MHz reference with VCO tuned to within one loop bandwidth of an integer multiple of the PD frequency. Larger offsets produce better results. See the Spurious Performance section for more information. [5] Measured with the HMC704LP4E evaluation board. Board design and isolation will affect performance. [6] Internal divide-by-2 must be enabled for frequencies >

4GHz [7] At low RF Frequency, Rise and fall times should be less than 1ns to maintain performance [8] Slew rate of greater or equal to 0.5ns/V [9] Current consumption depends upon operating mode and frequency of the VCO [10] Reference input disconnected [11] Min/Max versus temperature and supply, under typical reference &

frequencies &

RF power levels [12] Slew >

0.5V/ns is recommended , see Table

6 for more information [13] Operable with reduced spectral performance up to +7 dBm Table 1. Electrical Specifications (Continued)

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4 HMC704LP4E v04.0215

8 GHZ FRACTIONAL-N PLL TYPICAL PERFORMANCE CHARACTERISTICS Unless otherwise specified, plots are measured with a

50 MHz PD rate, VCO near

8 GHz. The operating modes in the following plots refer to Integer (int), Fractional Modes A and B, HiKcp (HiK) or Active (act) configurations. Figure 1. Floor FOM vs. Mode and Temp Figure 2. Flicker FOM vs. Mode and Temp Figure 3. Floor FOM vs. Output Frequency and Mode Figure 4. Flicker FOM vs. Output Frequency and Mode -236 -234 -232 -230 -228 -226 int Frac Mode A Hik int Hik Frac Mode A -40

0 40

80 FLOOR FOM TEMPERATURE (C) -270 -269 -268 -267 -266 -265 -264 -263 int Frac Mode A Hik int Hik Frac Mode A -40 -20

0 20

40 60

80 FLICKER FOM TEMPERATURE (C) -235 -230 -225 -220 -215

1 2

4 8 int Frac Mode A Frac Mode B Hik int Hik Frac Mode A Hik Frac Mode B FREQUENCY (GHz) FLOOR FOM HiK Frac Mode B HiK Frac Int Int HiK Frac Mode A Frac Mode B Frac Mode A -268 -267 -266 -265 -264 -263

1 2

4 8 int Frac Mode A Frac Mode B Hik Frac Mode A Hik Frac Mode B FREQUENCY (GHz) FLICKER FOM Int HiK Frac Mode A Frac Mode B Frac Mode A HiK Frac Mode B PLLs - SMT

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5 HMC704LP4E v04.0215

8 GHZ FRACTIONAL-N PLL Figure 7. Flicker FOM vs. Charge Pump Current Figure 8. Flicker FOM vs. CP Voltage, CP Current = 2.5mA Figure 9. Flicker FOM vs. CP Voltage, Hikcp + CP Current = 6mA Figure 10. Floor FOM vs. CP Voltage, CP Current = 2.5mA -270 -268 -266 -264

0 1

2 3

4 5 CP VOLTAGE (V) FLICKER FOM -230 -228 -226 -224 -222 -220 -218

0 1

2 3

4 5 CP VOLTAGE (V) FLOOR FOM -270 -265 -260 -255 -250 -245

0 0.5

1 1.5

2 2.5

3 CP CURRENT (mA) FLICKER FOM -270 -268 -266 -264 -262 -260 -258 -256

0 1

2 3

4 5 CP VOLTAGE (V) FLICKER FOM -234 -232 -230 -228 -226 -1

0 1

2 3

4 5

6 7

8 9

10 11

12 int Mode A HiK int HiK Mode A REFERENCE POWER (dBm) FLOOR FOM -272 -271 -270 -269 -268 -267 -266 -4 -2

0 2

4 6

8 10........