MSA180 Datasheet, PDF (1/17 Pages) OKI electronic componets – Piezo Speaker Amplifier

E2D0049-39-21
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MSA180
Piezo Speaker Amplifier
This version: Fe_Mb._S1_A99₁9₈₀
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 (V_CC=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
V_CC
MODE1
MODE2
A_IN
GND
V_CC V_CC
Logic
18 kW
6.6 kW
+
A_V=20
–
+
–^AV=20
6.6 kW
2.2 kW
BASE
SP
1.3 kW
SP
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