ISD5008 Datasheet, PDF (8/47 Pages) List of Unclassifed Manufacturers – SINGLE CHIP VOICE RECORD PLAYBACK DEVICE 4-, 5-, 6-, AND 8- MINUTE DURATIONS

AUX IN (Auxiliary Input)
The AUX IN is an additional audio input to the
ISD5008, such as from the microphone circuit in a
mobile phone “car kit.” This input has a nominal
700 mVp-p level at its minimum gain setting
(0 dB). See Table 5. Additional gain is available in
3 dB steps (controlled by the SPI bus) up to 9 dB.
ISD5008 Product
Figure 3: AUX IN Input Modes
Gain Resistor Ratio
Setting
(Rb/Ra)
00
40.1/40.1
01
47.0/33.2
10
53.5/26.7
11
59.2/21
Gain
1.0
1.414
2.0
2.82
Gain
(dB)
0
3
6
9
Setting⁽¹⁾
Table 5: AUXIN Amplifier Gain Settings
0TLP Input
V_PP(3)
CFG0
AXG1
AXG0
Gain⁽²⁾
Array In/Out
V_PP
Ana Out V_PP(4)
0 dB
.694
0
3 dB
.491
0
6 dB
.347
1
9 dB
.245
1
0
1.00
.694
.694
1
1.41
.694
.694
0
2.00
.694
.694
1
2.82
.694
.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
ISD
5