Integration Guide
Draft
EDG0208IG001
Page 34
Rev. 1.03 –4/19/07
6.7.11
Headset Speaker Output
Parameter
Parameter/Conditions
MIN TYP MAX UNIT
1.1.1. Maximum
Swing
R
L
= 32
& 2% distortion
VSP input level = +3 dBm0
1.60
1.96
Vp-p
Maximum Capacitive Load
100
pF
Maximum Resistive Load
32
Amplifier Gain
-5
dB
Amplifier State in Power Down
HighZ
The headset speaker output is a single ended output. Enfora recommends an external audio amplifier for
loads of less than 32
or if volume is inadequate.
6.7.12 Audio
Design
Note
Speaker and microphone PCB traces should be run in pairs and buried between two ground planes for best
results. The following figure provides a sample circuit design for connection of Mic and Speaker pins.
NOTE: The audio circuitry shown is left as a placeholder and is to be
considered preliminary.
Summary of Contents for Enabler EDG0208
Page 26: ...Integration Guide Draft EDG0208IG001 Page 21 Rev 1 03 4 19 07 Figure 11 Back of EDG0208 01 ...
Page 28: ...Integration Guide Draft EDG0208IG001 Page 23 Rev 1 03 4 19 07 Figure 13 Back of EDG0208 01 ...
Page 29: ...Integration Guide Draft EDG0208IG001 Page 24 Rev 1 03 4 19 07 Figure 14 Front of EDG0208 02 ...
