isd5100 Winbond Electronics Corp America, isd5100 Datasheet - Page 52

• 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

ANA IN
Input
ANA IN (Analog Input)
The ANA IN pin is the analog input from the telephone chip set. It can be switched (by the I
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
interface.
1.
2.
3.
4.
Setting
C
Gain from ANA IN to SP+/-
Gain from ANA IN to ARRAY IN
0TLP Input is the reference Transmission Level Point that is used for testing. This level is typically 3
dB below clipping
Speaker Out gain set to 1.6 (High). (Differential)
COUP =
12 dB
15 dB
6 dB
9 dB
NOTE:
0.1 ìF
(1)
f
CUTTOFF
0TLP Input
Ra
V
1.110
0.785
0.555
0.393
P-P
(3)
2xR
Internal to the device
1
a
C
CCUP
Rb
ANA IN Amplifier Gain Settings
AIG1
ANA IN
Input Amplifier
0
0
1
1
ANA IN Input Modes
CFG0
- 52 -
AIG0
0
1
0
1
Setting
Gain
00
01
10
11
Note: Ra & Rb are in k Ω
Gain
0.625
0.883
1.250
1.767
Ration (Rb/Ra)
(2)
77.9 / 88.1
92.3 / 73.8
63.9 / 102
Resistor
106 / 60
ISD5100 SERIES
In/Out V
0.694
0.694
0.694
0.694
Array
P-P
0.625
Gain
0.88
1.25
1.77
Out V
Speaker
2.22
2.22
2.22
2.22
Gain
(dB)
P-P
-4.1
-1.1
1.9
4.9
(4)
2
2
2
C
C