IAM-91563-TR2G Avago Technologies US Inc., IAM-91563-TR2G Datasheet - Page 9

• Manufacturer Part Number: IAM-91563-TR2G
• Description: MIXER RFIC GAAS 3V SOT-363
• Manufacturer: Avago Technologies US Inc.
• Series: IAM-91563r

Specifications of IAM-91563-TR2G

• Package / Case: 6-TSSOP, SC-88, SOT-363
• Rf Type: Cellular, ISM, PCS, PHS, WLL
• Frequency: 800MHz ~ 6GHz
• Number Of Mixers: 1
• Gain: 7.7dB
• Noise Figure: 11dB
• Secondary Attributes: Down Converter
• Current - Supply: 12mA
• Voltage - Supply: 3V
• Maximum Input Frequency: 6000 MHz
• Mounting Style: SMD/SMT
• Maximum Operating Frequency: 700 MHz
• Maximum Power Gain: 11 dB
• Operating Supply Voltage: 6 V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

The DC bias is also applied to the mixer through the IF
port. Figure 5 shows how an inductor (RFC) is used to
isolate the IF from the DC supply. The bias line is bypassed
to ground with a capacitor to keep RF off of the DC supply
lines and to prevent dips or peaks in the response of the
mixer.
Figure 25. Bias Connection.
LO Port
The LO input port is internally matched to 50 Ω within a
.: VSWR over the entire operating frequency range. Ad-
ditional matching will normally not be needed. However,
if desired, a small series inductor can be used to provide
some improvement in the LO match and thus reduce the
LO drive level requirement by up to 0.7 dB. Reflection co-
efficients for the LO port are shown in the table of Typical
Reflection Coefficients.
Source Bypass Pin
The Source Bypass pin should be RF bypassed to ground
at both the RF and LO frequencies as well as the IF. Many
capacitors with values large enough to adequately bypass
lower intermediate frequencies contain parasitics that
may have resonances in the RF band. It is often practical
to use two capacitors in parallel for this purpose instead
of one. A small value, high quality capacitor is used to by-
pass the RF/LO frequencies and a large value capacitor for
the IF. When biased in the high linearity mode, a resistor is
added from the Source Bypass pin to ground.
High Linearity Mode
The IAM-9563 has a feature that allows the user to place
an external resistor from the Source Bypass pin to ground
and increase the device current from a nominal 9 mA to
as high as 0 mA. The additional current increases mixer
linearity (IP
at higher device current is shown in Figures 6 and 7.
9
RF
LO
IF
3
) and output power(P
Capacitor
Bypass
RFC
Output
IF
dB
V
d
). Mixer performance
Figure 26. Available Conversion Gain and SSB Noise Figure vs. Device Current
(Source Resistor).
Figure 27. One dB Compression and Input Third Order Intercept Point vs. De-
vice Current (Resistor).
As an example of improved linearity, the use of a 5 Ω re-
sistor at the Source Bypass pin increases the device cur-
rent to 4 mA. At .9 GHz, the input IP
-6.5 dBm to -3 dBm. Increasing the LO drive level from -5
dBm to - dBm further increases the input IP
Figure 27. One dB Compression and Input Third Order
Intercept Point vs. Device Current (Resistor).
Figure 26. Available Conversion Gain and SSB Noise
Figure vs. Device Current (Source Resisitor).
-10
14
12
10
-2
-4
-6
-8
8
6
4
0
7
7
1000
1000
9
9
Approximate Resistor Value ( )
Approximate Resistor Value ( )
56
56
DEVICE CURRENT (mA)
DEVICE CURRENT (mA)
11
11
21
21
13
13
9
9
15
15
GAIN
NF
P1 dB
5
IP3
5
17
17
3
3
19
19
3
is increased from
3
to 0 dBm.