Specifications

Product Technical Specification & Customer Design Guidelines
Interfaces
Electrical characteristics of EAR
Parameters Min Typ Max Unit
Biasing
voltage
EARP and EARN 1.30 V
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WA_DEV_Q64_PTS_001-003 January 9, 2009
RL=8Ω: AT+VGR=6*; single ended
- - 2 Vpp
RL=8Ω: AT+VGR=6*; differential
- - 4 Vpp
Output
swing
voltage
RL=32Ω: AT+VGR=6*; single
ended
- - 2.5 Vpp
- - 5 Vpp
RL=32
Ω: AT+VGR=6*; differential
RL Load resistance 6 8 -
Ω
IOUT - - 180 mA
Output current; peak value; RL=8
Ω
- - 250 mW
POUT
RL=8
Ω; AT+VGR=6*;
RPD Output pull-down resistance at
power-down
28 40 52
K
Ω
VPD Output DC voltage at power-down - - 100 mV
*The output voltage depends on the output speaker gain set by AT command. Please refer to the document
[4] AT Command Interface Guide for Open AT® Firmware v6.5.
If a singled-ended solution is used with the earpiece output, only one of the EAR must
be chosen. The result is a maximal output power divided by 2.
3.11.2.1.2 Auxiliary Audio Output (AUXO)
With the AUXO interface, only single-ended speaker connection is allowed.
A filtering circuitry is already built inside the Q64.
Equivalent circuits of AUXO