LG KE600 Service Manual - Page 50
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3. TECHNICAL BRIEF 3.13.2. Microphone The microphone is a omni-directional microphone condenser microphone with -42 3dB sensitivity. MIC1_P MIC1_N VMICN VMICP R364 R365 C342 C343 27p 27p 0 C344 0.1u 0 C345 0.1u C349 27p C350 27p C351 1000p C367 10u R345 1.2K R348 1.2K D311 PG05DBTFC D312 PG05DBTFC MIC301 1 2 OB4-15L42-C33L Figure 25 Microphone with Gain switching circuit - 51 -
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3. TECHNICAL BRIEF
- 51 -
3.13.2. Microphone
The microphone is a omni-directional microphone condenser microphone with -42 3dB sensitivity.
Figure 25 Microphone with Gain switching circuit
D311
PG05DBTFC
0
R364
R348
1.2K
0
R365
PG05DBTFC
D312
1.2K
R345
C344
0.1u
C342
27p
0.1u
C345
C349
27p
27p
C343
1000p
C351
OB4-15L42-C33L
MIC301
1
2
27p
C350
C367
10u
VMICN
VMICP
MIC1_P
MIC1_N