The gain values presented in the table apply for a differential output vs. single-ended/differential input.
Loop test Input
terminal
Output
terminal
Path
gain
[dB]
(fixed)
Input
voltage
[mVp-p]
Differe
ntial
output
voltage
[mVp-
p]
Outp
ut DC
level
[V]
Output
current
[mA]
External Mic to
External Earpiece
XMICP and
GND
HSEAR R
and GND
-2.9 1000 720 1.2 NA
HSEAR L and
GND
External Mic to
Internal Earpiece
XMICP and
GND
EarP and
GND
-4.0 750 490 1.2 NA
EarN and
GND
External Mic to
Internal handsfree
XMICP and
GND
E2101 pad 8.5 920 2520 0 25mA
(calc.)
E2102 pad
Internal Mic to
External Earpiece
B2100 (OUT/
GND)
HSEAR R
and GND
22.7 100 1360 1.2 NA
HSEAR L and
GND
Measurement data
Figure 37 Single-ended output waveform of the Ext_in_HP_out measurement when earpiece is connected.
RM-217; RM-222
BB Troubleshooting and Manual Tuning Guide Nokia Customer Care
Issue 1 COMPANY CONFIDENTIAL Page 6 –27
Copyright © 2007 Nokia. All rights reserved.
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