isd5100 Winbond Electronics Corp America, isd5100 Datasheet - Page 53

• Manufacturer Part Number: isd5100
• Description: Single-chip 1 To 16 Minutes Duration Voice Record/playback Devices With Digital Storage Capability
• Manufacturer: Winbond Electronics Corp America

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
steps (controlled by the I
AUX IN
Input
1.
2.
3. 0TLP Input is the reference Transmission Level Point that is used for testing. This level is typically 3 dB
4.
Setting
below clipping
C
Gain from AUX IN to ANA OUT
Gain from AUX IN to ARRAY IN
Differential
0 dB
3 dB
6 dB
9 dB
AUX IN Amplifier Gain Settings table
COUP =
NOTE:
(1)
0.1 ìF
f
CUTTOFF
0TLP Input
V
0.694
0.491
0.347
0.245
Ra
P-P
2
C interface) up to 9 dB.
(3)
2xR
Internal to the device
1
a
C
CCUP
Rb
AXG1
0
0
1
1
AUX IN Amplifier Gain Settings
ANA IN
Input Amplifier
AUX IN Input Modes
CFG0
- 53 -
AXG0
on page 56. Additional gain is available in 3 dB
0
1
0
1
Note: Ra & Rb are in k Ω
Setting
Gain
00
01
10
11
Gain
1.00
1.41
2.00
2.82
Publication Release Date: May 16, 2007
(2)
Resistor Ratio
40.1 / 40.1
47.0 / 33.2
53.5 / 26.7
59.2 / 21
ISD5100 SERIES
(Rb/Ra)
In/Out V
0.694
0.694
0.694
0.694
Array
P-P
1.414
Gain
2.82
1.0
2.0
Out V
Speaker
0.694
0.694
0.694
0.694
Revision 1.4
P-P
Gain
(4)
(dB)
0
3
6
9
(2)