HPMX-2006 Datasheet, PDF (7/8 Pages) Agilent(Hewlett-Packard) – 0.8 - 2.5 GHz Upconverter/Amplifier

mixer LO input
Cbl _{C1 R3}
LO in
LO in
1000 pF 10 pF
Ref
C6
Rterm
mixer IF input
R1
IF in
R2
IF in
C6
Amp1 Ve1
Amp RF in
standby input
enable
Mixer Vc
gnd
Amp Vc
Amp RF out
Amp Ve2
Amp1 Ve2
gnd
Mixer RF out
Vcc
0.01 µF
22 pF
mixer RF output
L3
Amp RF out
Amp Ve2
Amp1 Ve1
C15
standby
input
Amp RF in
enable
Amp1 Ve2
gnd
Mixer RF out
Sideband
Filter
C8
Amp
L2 RF output
Vcc
C12 (100 pF)
C14
L3
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
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.
Cbl (>100 pF)
single-ended
mixer LO input _{C1 R3}
LO in
LO in
Cbl (>100 pF)
differential
mixer LO input
Cbl (>100 pF)
LO in
LO in
Figure 15. LO Connections for Single-
ended Operation.
Figure 16. LO Connections for
Balanced Operation.
10 pF
1000 pF
Ref
C6
R1
IF in
Rterm
R2
single-ended
IF in
mixer IF input,
AC coupled
C6
Figure 17. IF Connections for AC
Coupled Single-ended Use.
10 pF
1000 pF
Ref
balanced
mixer IF input,
AC coupled
C6
R1
IF in
R2
IF in
C6
Figure 18. IF Connections for AC
Coupled Balanced Use.
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.
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. R_term (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.
balanced mixer IF input,
DC coupled. DC level of
IF source must be at
Ref
V base (Table 4).
IF in
IF @ V base
IF in
Figure 19. IF Connections for DC
Coupled Use.
Vcc, V
2.7
3.0
3.5
4.0
4.5
5.0
Vbase, V
1.5
1.5
1.5-1.75
1.5-2.0
1.5 - 2.25
1.5-2.5
Table 4. V_base vs. V_cc. V_base is the
required bias at the IF ports.
1. For DC coupled operation, the IF input
must also supply V_base to both IF in and
IF in bar, per the values in Table 4. Ref
pin is not used.
7-72