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Loop test
Input
terminal
Output
terminal
Path
gain [dB]
(fixed)
Input
voltage
[mVp-p]
Differential
output
voltage
[mVp-p]
Output
DC level
[V]
Output
current
[mA]
External Mic to
Internal
handsfree
XMICP and
GND
B2101 pads N/A
1000
Square with
amplitude
equal to
VBAT
1.9
N/A
Measurement data
Figure 9 External input Ear out
RM-257; RM-270; RM-277
BB Troubleshooting and Manual Tuning Guide
Page 3 –38
COMPANY CONFIDENTIAL
Issue 1
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