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written agreement.
WM_PRJ_Q2686_PTS_001-010
June 30, 2009
Q2686 Wireless CPU
®
Electrical Characteristics of SPK1
Parameters
Min
Typ Max Unit
Biasing
voltage
-
1.30
V
RL=16
Ω
: AT+VGR=-1600**;
single-ended
- 1.7
-
Vpp
Output
swing
voltage
RL=32
Ω
; AT+VGR=-1600**;
single-ended
- 1.9
2.75
Vpp
RL Load
resistance
14.5
32
-
Ω
RL=16
Ω
- 40
85
mA
IOUT Output
current;
single-ended; peak
value
RL=32
Ω
- 22
-
mA
RL=16
Ω
; AT+VGR*=-1600**
- 25
mW
POUT
RL=32
Ω
; AT+VGR*=-1600**
- 16
27
mW
RPD
Output pull-down resistance at
power-down
28 40
52
k
Ω
•
*The output voltage depends of the output speaker gain set by AT command. Please refer
to the document AT command User Guide [7].
•
** This value is given in dB, but it’s possible to toggle to index value. Please refer to the
document :AT command User Guide [7]
3.11.2.1.2
SPK2 Speaker Outputs
The SPK2 interface allows differential and single ended speaker connection
Equivalent circuits of SPK2
