LA74302FN Datasheet, PDF (11/12 Pages) Sanyo Semicon Device – Monolithic Linear IC Audio Interface for DSC

Continued from preceding page.
PIN
Pin Name DC Voltage
18 MIC ATT
0.30V
AC Voltage
LA74302FN
Description of Functions
MIC Amp attenuator output pin
Equivalent Circuit Diagram in Pin
VCCA(=3.0V)
19 MIC NFB
1.64V
MIC Amp NFB pin
20 MIC GND
21 MIC IN
0V
1.64V
-70dBV
(Reference input
level)
MIC Amp block GND pin
MIC input pin
22 MIC VCC
2.30V
MIC power pin
23 VREFL
2.30V
MIC VCC and VREFL ripple
removal pin
24 SP GND
28
25 SPK OUT+
0V
1.25V
-10dBV
(EVR MAX at PB
reference input)
Speaker GND pin
Speaker positive-phase output
pin
26 VCCSP
3.0V
Speaker power pin
4.3 ^{100kΩ 300Ω}
kΩ
18
950Ω
19
VCCA(=3.0V)
500Ω
21
70kΩ
VREFL
VCCA(=3.0V)
100Ω
500Ω
22
20kΩ
VCCA(=3.0V)
13kΩ
23
12.4kΩ
30.7kΩ
VCCSP(=3.0V)
5.1kΩ
25
5kΩ
27
No.A1180-11/12