Speaker Amplifier. MSA180 Datasheet

MSA180 Amplifier. Datasheet pdf. Equivalent

Part MSA180
Description Piezo Speaker Amplifier
Feature E2D0049-39-21 www.DataSheet4U.com ¡ Semiconductor ¡ Semiconductor MSA180 Piezo Speaker Amplifier T.
Manufacture OKI electronic
Total Page 17 Pages
Datasheet
Download MSA180 Datasheet



MSA180
E2D0049-39-21
www.DataSheet4U.com
¡¡SemicondSucetormiconductor
MSA180
Piezo Speaker Amplifier
This version: FeMb.S1A991980
Previous version: May. 1997
GENERAL DESCRIPTION
The MSA180 is a piezo speaker driver for OKI's speech synthesizers. Its voltage gain can be adjusted
by a factor of up to 10. The differential output provides an amplitude of twice the voltage supply.
A separate output connects to the base of an external transistor for controlling system voltage.
A standby function eliminates power loss when no input signal is present.
FEATURES
• Power supply voltage
: 2.0 V to 6.0 V (single supply voltage)
• Low current consumption
• Standby current
: 4.2 mA typ (VCC=3 V, no load)
: <1 mA
• Differential output
: Twice the supply voltage (maximum output
amplitube)
• Package options :
8-pin plastic DIP (DIP8-P-300-2.54) (Product name: MSA180RS)
8-pin plastic SOP (SOP8-P-250-1.27-K) (Product name: MSA180MS-K)
Chip
BLOCK DIAGRAM
VCC
MODE1
MODE2
AIN
GND
VCC VCC
Logic
18 kW
6.6 kW
+
AV=20
+
AV=20
6.6 kW
2.2 kW
BASE
1.3 kW
SP
SP
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MSA180
¡ Semiconductor
PIN CONFIGURATION (TOP VIEW)
MODE2 1
AIN 2
GND 3
SP 4
8 MODE1
7 BASE
6 VCC
5 SP
8-Pin Plastic DIP or 8-Pin Plastic SOP
MSA180
PIN DESCRIPTIONS
Pin
Symbol
Type
Description
6 VCC — Power supply pin.
3 GND — Ground pin.
2 AIN I Voice signal input pin.
This pin switches the device between operation and standby modes.
8
MODE1
I The IC is in operation mode if VIH > 1.0 V on the MODE1 pin and is in
standby mode if VIL < 0.3 V on the MODE1 pin. When MODE1 is used,
MODE2 must be connected to VCC.
This pin switches the device between operation and standby modes.
1
MODE2
I The IC is in operation mode if VIL < VCC–1.0 V on MODE1 pin and is in
standby mode if VIH > VCC–0.3 V on MODE1 pin. When MODE2 is used
MODE1 must be connected to GND.
This pin is connected to the base of an external transistor. If an
7
BASE
O external transistor is not used to control system voltage, this pin must
be left open.
4
SP
This is a speaker output pin that provides signals with the same phase
O
as the input.
This is a speaker output pin that provides signals with an inverted
5 SP O
phase to the input.
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