la1175 Sanyo Semiconductor Corporation, la1175 Datasheet - Page 8

• Manufacturer Part Number: la1175
• Description: Fm Mixer, If, Agc Driver, Buffer For Car Radios, Stereo Systems
• Manufacturer: Sanyo Semiconductor Corporation

Cross point
The open input level of undesired signal 2 at which the IM output and desired signal output are at the same level.
IM output
Desired signal output • Desired signal
Desired input level
With ANT damping
RF AGC and
ANTD AGC
Without ANT
damping
RF AGC only
Broken line
Solid line
Improvement
Fig. A Intermodulation Characteristic
Intermodulation dummy
(with ANT damping)
Undesired input 2 – dBµ
• Desired signal
• Undesired signal 1
• Undesired signal 2
• Undesired signal 1
• Undesired signal 2
90.5dBµ
59.5dBµ
50dBµ
31dB
Unit (resistance : Ω, capacitance F)
109dBµ
60dBµ
72dBµ
37dB
: Non-mod at each specified input
: Non-mod at input 132dBµ (SG open)
: 100% mod with input variable
: 100% at each specified input
: Non-mod at input 132dBµ (SG open)
: Non-mod with input variable
LA1175, 1175M
123dBµ
70dBµ
89dBµ
34dB
Broken line
Solid line
Test
impossible
80dBµ
98dBµ
Fig. B Intermodulation Characteristic
Intermodulation dummy
(with ANT damping)
Undesired input 2 – dBµ
Refer to Fig. A.
Refer to Fig. B.
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