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HPMX-2006 Datasheet(PDF) 7 Page - Agilent(Hewlett-Packard) |
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HPMX-2006 Datasheet(HTML) 7 Page - Agilent(Hewlett-Packard) |
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7 / 8 page  7-72 Frequency, MHz L2, nH C8, pF 900 12.5 2.2 1500 5.4 2.2 1800 3.1 2.2 1900 2.8 2.2 2400 1.6 2.2 1. LO in and LO bar in are identical; either can be used as the single-ended LO input with the other AC grounded. 2. R3 lowers the Q of the blocking capacitor to remove possible reso- nances for broadband operation below 1.75 GHz. C12 (100 pF) C8 C14 C15 Vcc Amp RF output Mixer RF out Amp RF out gnd Amp1 Ve2 Amp Ve2 enable Amp RF in Amp1 Ve1 L2 L3 standby input Sideband Filter LO in LO in Cbl (>100 pF) single-ended mixer LO input C1 R3 LO in LO in Cbl (>100 pF) Cbl (>100 pF) differential mixer LO input Figure 15. LO Connections for Single- ended Operation. Figure 16. LO Connections for Balanced Operation. C6 C6 R2 R1 Rterm IF in IF in Ref 10 pF single-ended mixer IF input, AC coupled 1000 pF C6 C6 R2 R1 IF in IF in Ref 10 pF balanced mixer IF input, AC coupled 1000 pF Figure 17. IF Connections for AC Coupled Single-ended Use. Figure 18. IF Connections for AC Coupled Balanced Use. Figure 19. IF Connections for DC Coupled Use. Table 4. Vbase vs. Vcc. Vbase is the required bias at the IF ports. IF in IF in Ref balanced mixer IF input, DC coupled. DC level of IF source must be at V base (Table 4). IF @ V base 1. The IF pins require a bias voltage to operate properly (see Table 4). When the IF is AC coupled, this voltage is supplied from the Ref pin via R1 and R2. When the IF is DC coupled, the voltage is externally generated and the Ref pin is not used. 2. The base current is small, so to 1st order the value of R1, R2 can be selected to set the IF load impedance (50 -200 ohm typ.) 3. IF in and IF bar in are identical; either can be used as as the single-ended IF input with the other AC grounded. 4. Rterm (optional) should be the same value as the IF source impedance. It improves LO rejection by balancing the IF port and also de-Q’s C6. Vcc, V Vbase, V 2.7 1.5 3.0 1.5 3.5 1.5-1.75 4.0 1.5-2.0 4.5 1.5-2.25 5.0 1.5-2.5 1. For DC coupled operation, the IF input must also supply Vbase to both IF in and IF in bar, per the values in Table 4. Ref pin is not used. Figure 13. Mixer Only Use (AC Coupled Single-ended Use Shown). Refer to Table 2 for Component Values. Figure 14. 900 MHz Use. Refer to Table 2 for Component Values. Table 3. Amp Output Match Component Values vs. Frequency. C6 C6 R2 R1 Rterm mixer RF output Mixer RF out Amp RF out Mixer Vc gnd gnd Amp1 Ve2 Amp Ve2 Amp Vc enable IF in LO in Amp RF in LO in Amp1 Ve1 IF in Ref L3 Vcc mixer LO input Cbl C1 R3 mixer IF input standby input 10 pF 1000 pF 0.01 µF 22 pF |
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