mc13150ftb Lansdale Semiconductor, Inc., mc13150ftb Datasheet - Page 11

• Manufacturer Part Number: mc13150ftb
• Description: Narrowband Fm Coilless Detector If Subsystem
• Manufacturer: Lansdale Semiconductor, Inc.

LANSDALE Semiconductor, Inc.
RECEIVER DESIGN CONSIDERATIONS
The curves of signal levels at various portions of the applica-
tion receiver with respect to RF input level are shown in
Figure 17. This information helps determine the network
topology and gain blocks required ahead of the ML13150 to
achieve the desired sensitivity and dynamic range of the
receiver system. The PCB is laid out to accommodate a low
noise preamp followed by the 83.16 MHz SAW filter. In the
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–10
–20
–30
–40
–50
–60
–70
10
0
–80
IF Output
Mixer Output
–70
–60
Limiter
Input
Figure 17. Signal Levels versus
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RF INPUT SIGNAL LEVEL (dBm)
RF Input Signal Level
–50
f RF = 50 MHz
f LO = 50.455 MHz; LO Level = –10 dBm
See Figure 15
application circuit (Figure 15), the input 1.0 dB compression
point is –10 dBm and the input third order intercept (IP3) per-
formance of the system is approximately 0 dBm (see Figure
18).
TYPICAL PERFORMANCE OVER TEMPERATURE
Figures 19–26 show the device performance over tempera-
ture.
–40
IF Input
–30
Mixer
Input
–20
RF Input
at Transformer
Input
–10
0
ML13150
Issue A