HFA3101BZ96 Intersil, HFA3101BZ96 Datasheet - Page 8

• Manufacturer Part Number: HFA3101BZ96
• Description: IC TRANS ARRAY NPN GILBERT 8SOIC
• Manufacturer: Intersil

Specifications of HFA3101BZ96

• Frequency: 0Hz ~ 10GHz
• Number Of Mixers: 1
• Noise Figure: 1.7dB
• Package / Case: 8-SOIC (0.154", 3.90mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Supply: -
• Voltage - Supply: -
• Rf Type: -
• Gain: -
• Secondary Attributes: -

broadband match if so desired at 50Ω (R
well as with tuned medium Q matching networks (L, T etc.).
Stability
The cell, by its nature, has very high gain and precautions
must be taken to account for the combination of signal
reflections, gain, layout and package parasitics. The rule of
thumb of avoiding reflected waves must be observed. It is
important to assure good matching between the mixer stage
and its front end. Laboratory measurements have shown
some susceptibility for oscillation at the upper quad
transistors input. Any LO prefiltering has to be designed
such the return loss is maintained within acceptable limits
specially at high frequencies. Typical off the shelf filters
exhibits very poor return loss for signals outside the
passband. It is suggested that a “pad” or a broadband
resistive network be used to interface the LO port with a
filter. The inclusion of a parallel 2K resistor in the load
decreases the gain slightly which improves the stability
factor and also improves the distortion products (output
intermodulation or 3rd order intercept). The employment of
good RF techniques shall suffice the stability requirements.
Evaluation
The evaluation of the HFA3101 in a mixer configuration is
presented in Figures 6 to 11, Table 1 and Table 2. The layout
is depicted in Figure 5.
The output matching network has been designed from data
taken at the output port at various test frequencies with the
FIGURE 5. UP/DOWN CONVERTER LAYOUT, 400%;
MATERIAL G10, 0.031
8
L
= 50Ω to 2kΩ) as
HFA3101
setup as in Table 1. S
the calculation of L, T or transmission line matching
networks.
TABLE 4. TYPICAL VALUES OF S22. L
Power Gain
TOI Output
NF SSB
Power Gain
TOI Output
NF SSB
Power Gain
TOI Output
NF SSB
Power Gain
TOI Output
NF SSB
TABLE 1. S
TABLE 2. TYPICAL PARAMETERS FOR DOWN
TABLE 3. TYPICAL VALUES OF S
FREQUENCY
PARAMETER
PARAMETER
FREQUENCY
FREQUENCY
100MHz
300MHz
600MHz
900MHz
300MHz
600MHz
900MHz
1.1GHz
1.1GHz
10MHz
45MHz
75MHz
L
CONVERSION, L
L
CH
CH
22
PARAMETERS FOR DOWN CONVERSION,
= 390nH I
= 10µH
22
RESISTANCE
RESISTANCE
RESISTANCE
characterization is enough to assure
BIAS
LO LEVEL
LO LEVEL
-6dBm
-6dBm
-6dBm
-6dBm
-6dBm
-6dBm
23.5Ω
10.3Ω
0dBm
0dBm
0dBm
0dBm
0dBm
0dBm
265Ω
420Ω
122Ω
7.5Ω
5.2Ω
3.9Ω
8.7Ω
67Ω
CH
22Ω
8Ω
= 8mA (SET UP OF FIGURE 11)
= 10µH
22
CH
FOR THE OUTPUT PORT.
= 390nH, I
REACTANCE
I
REACTANCE
REACTANCE
I
BIAS
BIAS
V
V
11.5dBm
12.5dBm
CC
14.5dB
11dBm
CC
13dBm
- 735Ω
- 432Ω
- 320Ω
-115Ω
-110Ω
8.5dB
8.6dB
615Ω
15dB
10dB
20dB
11dB
24dB
-43Ω
-14Ω
-39Ω
-14Ω
BIAS
0Ω
0Ω
= 19mA
= 8mA
= 3V,
= 4V,
= 18mA