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ISD5116S Datasheet(PDF) 26 Page - Winbond

Part No. ISD5116S
Description  Single-Chip Voice Record/Playback Device Up to 16-Minute Duration with Digital Storage Capability
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Maker  WINBOND [Winbond]
Homepage  http://www.winbond.com
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ISD5116S Datasheet(HTML) 26 Page - Winbond

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October 2000
Page 25
ANA IN (Analog Input)
The ANA IN pin is the analog input from the telephone chip set. It can be switched (by the I
2C interface) to
the speaker output, the array input or to various other paths. This pin is designed to accept a nominal
1.11 V p-p when at its minimum gain (6 dB) setting. There is additional gain available, if required, in 3 dB
steps, up to 15 dB. The gain settings are controlled from the I
2C interface.
ANA IN Input Modes
ANA IN Amplifier Gain Settings
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)
Gain
Setting
Resistor Ratio
(Rb/Ra)
Gain
Gain
2
(dB)
00
63.9 / 102
0.625
-4.1
01
77.9 / 88.1
0.883
-1.1
10
92.3 / 73.8
1.250
1.9
11
106 / 60
1.767
4.9
CFG0
Setting
(1)
0TLP Input
VP-P
(3)
AIG1
AIG0
Gain
(2)
Array
In/Out VP-P
Speaker
Out VP-P
(4)
6 dB
1.110
0
0
0.625
0.694
2.22
9 dB
0.785
0
1
0.883
0.694
2.22
12 dB
0.555
1
0
1.250
0.694
2.22
15 dB
0.393
1
1
1.767
0.694
2.22
AUX IN (Auxiliary Input)
The AUX IN is an additional audio input to the ISD5116, 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 I
2C interface) up to 9 dB.


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