GENERAL DESCRIPTION
The MSA180 is a piezo speaker driver for OKIs 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 : 4.2 mA typ (VCC=3 V, no load)
• Standby current : <1 μA
• 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