User Guide

Loop test Input terminal Output
terminal
Path
gain
[dB]
(fixed)
Input
volta
ge
[mVp-
p]
Differen
tial
output
voltage
[mVp-p]
Outpu
t DC
level
[V]
Outp
ut
curre
nt
[mA]
External Mic in
External Speaker out
XMICP and GND HSEAR R P,
HSEAR R N
and GND
2.9 280 390 1.25 N/A
HSEAR P,
HSEAR N and
GND
XMICN and GND HSEAR R P,
HSEAR R N
and GND
HSEAR P,
HSEAR N and
GND
External Mic in
HP Speaker out
XMICP and GND EarP and GND 6.9 140 310 1.25 N/A
EarN and
GND
XMICN and GND EarP and GND
EarN and
GND
External Mic in
Internal Handsfree out
XMICP and GND B1 pads 11.4 150 560 0 25
mA
(calc
.)
XMICN and GND B1 pads
Digital Stereo Mic in
External Earpiece out
B1 and B2 HSEAR R P,
HSEAR R N
and GND
NA 100
(dBA)
Soun
d
Press
ure
Level
(SPL)
100 1.28 N/A
HSEAR P,
HSEAR N and
GND
RA-6
BB Troubleshooting and Tuning Guide
Page 3 –54 COMPANY CONFIDENTIAL Issue 1
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