ISD5100 Datasheet, PDF (52/88 Pages) Winbond – SINGLE-CHIP 1 TO 16 MINUTES DURATION VOICE RECORD/PLAYBACK DEVICES WITH DIGITAL STORAGE CAPABILITY

ISD5100 – SERIES
ANA IN (Analog Input)
The ANA IN pin is the analog input from the telephone chip set. It can be switched (by the I²C
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 I²C
interface.
ANA IN Input Modes
Internal to the device
Rb
C_{COUP =} 0.1 ìF
ANA IN
Ra
Input
ANA IN
Input Amplifier
Gain
Resistor
Setting Ration (Rb/Ra)
00
63.9 / 102
01
77.9 / 88.1
10
92.3 / 73.8
11
106 / 60
Note: Ra & Rb are in kΩ
Gain
0.625
0.88
1.25
1.77
Gain²
(dB)
-4.1
-1.1
1.9
4.9
NOTE: f_CUTTOFF
1
2xR_aC_CCUP
Setting⁽¹⁾
6 dB
9 dB
12 dB
15 dB
0TLP Input
V_P-P(3)
1.110
0.785
0.555
0.393
ANA IN Amplifier Gain Settings
CFG0
Gain⁽²⁾
AIG1
AIG0
0
0
0.625
0
1
0.883
1
0
1.250
1
1
1.767
Array
In/Out V_P-P
0.694
0.694
0.694
0.694
Speaker
Out V_P-P(4)
2.22
2.22
2.22
2.22
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)
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