ISD5100 – SERIES
1. Gain from ANA IN to SP+/-
2. Gain from ANA IN to ARRAY IN
3. 0TLP Input is the reference Transmission Level Point that is used for testing. This level is
typically 3 dB below clipping
4. Speaker Out gain set to 1.6 (High). (Differential)
AUX IN (Auxiliary Input)
The AUX IN is an additional audio input to the ISD5100-Series, such as from the microphone circuit in
a mobile phone “car kit.” This input has a nominal 694 mV p-p level at its minimum gain setting (0 dB).
See the following table. Additional gain is available in 3 dB steps (controlled by the I2C interface) up to
9 dB.
AUX IN Input Modes
Gain
Resistor Ratio
(Rb/Ra)
40.1 / 40.1
47.0 / 33.2
53.5 / 26.7
59.2 / 21
Gain
Gain(2)
(dB)
CCOUP = 0.1 µF
Setting
AUX IN
Input
00
01
10
11
1.0
1.414
2.0
0
3
6
9
ANA IN
Input Amplifier
2.82
Note: Ra & Rb are in kΩ
NOTE: fCUTTOFF
2xRaCCOUP
AUX IN Amplifier Gain Settings
Setting(1)
0TLP I(n3p) ut
CFG0
Gain(2)
Array
Speaker
(4)
VP-P
In/Out VP-P Out VP-P
AXG1
AXG0
0 dB
3 dB
6 dB
9 dB
0.694
0.491
0.347
0.245
0
0
1
1
0
1
0
1
1.00
1.41
2.00
2.82
0.694
0.694
0.694
0.694
0.694
0.694
0.694
0.694
1. Gain from AUX IN to ANA OUT
2. Gain from AUX IN to ARRAY IN
3. 0TLP Input is the reference Transmission Level Point that is used for testing. This level is typically
3 dB below clipping
4. Differential
Publication Release Date: October, 2003
- 35 -
Revision 0.2
WINBOND [ WINBOND ]
