IDP-782 - Hardware Guide
Parameter
Min.
Typical
Max.
Units
Speaker
Differential output voltage
4.0
4.1
4.2
V
Common mode output voltage
-
1.25
-
V
Output current limit
-
-
200
mA
Output load resistance
14
16
32
Ω
Signal to noise
(16 Ω load, input signal = 0 dBFS)
70
80
-
dB
Signal to noise
(32 Ω load, input signal = 0 dBFS)
60
70
-
dB
3.8.2 HSPA Audio
Parameter
Condition
Min.
Typical
Max.
Units
Microphone
Microphone bias voltage
-
1.5
1.55
1.6
V
Differential input voltage
-
0.7
0.8
0.9
Vpp
Differential input resistance
-
30
50
-
kΩ
Common mode DC voltage
-
-
0.5
-
V
Signal to noise
-
75
-
-
dB
Bandwidth
-
300
-
3900
Hz
Speaker
Output power
16 Ω load
30
50
-
mW
32 Ω load
-
33
3
mW
Total harmonic dist noise
16 Ω load, 25 mW, F=1 kHz
-
0.08
-
%
32 Ω load, 25 mW, F=1 kHz
-
0.05
-
%
Dynamic range
0 dB volume setting
-
90
-
dB
Power supply rejection ratio
Vdd = 1.8 V
60
84
-
dB
Output offset voltage
-
-
-
+3.5
mV
Capacitive drive capability
32 Ω load
-
500
-
pF
3.8.3 Headset Microphone
Parameter
Min.
Typical
Max.
Units
Omni-directional Electret Condenser Microphone Output
Impedance
-
2.2
-
kΩ
Operating Voltage
1.5
-
-
V
Operating Current
-
-
4
mA
Operating Frequency
100
-
20000
kHz
T213, Version 02
39
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