Specifications

WM_PRJ_Q2400_PTS_001 - 003
6th November 2002
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2.11.4 Speaker outputs
2.11.4.1 Speaker 2 Outputs
Pin description
Signal Pin # I/O I/O type Description
SPK2P 45 O Analog Speaker 2 positive output
SPK2N 47 O Analog Speaker 2 negative output
2.11.4.2 Speaker 1 Outputs
Pin description
Signal Pin # I/O I/O type Description
SPK1P 41 O Analog Speaker 1 positive output
SPK1N 43 O Analog Speaker 1 negative output
2.11.5 Buzzer Output
The buzzer output is a digital one. A buzzer can be directly connected between
this output and VBATT. The maximum current is 80 mA (PEAK). A diode
against transient peak voltage must be connected as described below.
C1
D1
VBATT
Figure 8 : Buzzer connection
C1: depends on the buzzer type.
Pin description
Signal Pin # I/O I/O type Description
BUZ 49 O Analog Buzzer output
Operating conditions
Parameter Condition Min Max Unit
V
OL
Imoy = 40mA 0.6
V
I
PEAK
VBATT = VBATTmax 80
mA
I
AVERAGE
VBATT = VBATTmax 40
mA