UM95089

The UM95089 DTMF generator is specifically designed to implement a dual tone telephone dialing system in applications requiring fixed supply operation and high stability tone output level,making it well suited for electronic telephone applications.

Features of the UM95089 are:(1)wide operating voltage range:2.5V to 10.0V;(2)optimized for constant operating supply voltage,typically 3.5V;(3)tone amplitude stability is within ±1.5dB of the operating temperature range;(4)low power CMOS circuitry allows device power to be derived directly from the telephone lines or from small batteries;(5)uses TV crystal standard(3.58MHz) to derive all frequencies thus providing high accuracy and stability;(6)specifically designed for electronic telephone applications;(7)severs as an interface directly to a standard telephone push-button keyboard with common terminal;(8)low total harmonic distortion;(9)dual tone as well as single tone capability;(10)direct replacement for AMI S25089 and mostek MK5089 tone generators.

The absolute maximum ratings of the UM95089 can be summarized as:(1)DC supply voltage(VDD-VSS):+10.5V;(2)operating temperature:-25 to +70;(3)storage temperature:-65 to +150;(4)power dissipation at 25:500mW;(5)input voltage:-0.6VINvdd+0.6;(6)input/output current(except tone output):15mA;(7)tone output current:50mA.

If you want to know more information such as the electrical characteristics about the UM95089, please download the datasheet in www.seekic.com or www.chinaicmart.com .