LM4990ITLX

The LM4990ITLX is designed as one kind of 2 watt audio power amplifier that can be used in (1)mobile phones; (2)PDAs; (3)portable electronic devices applications. This device is capable of delivering 1.25 watts of continuous average power to an 8 BTL load and contains advanced pop & click circuitry which eliminates noise which would otherwise occur during turn-on and turn-off transitions. And also it features a low-power consumption shutdown mode.

Features of the LM4990ITLX are:(1)Available in space-saving packages: LLP, Exposed-DAP TSSOP, MSOP, and ITL; (2)Ultra low current shutdown mode; (3)Improved pop & click circuitry eliminates noise during turn-on and turn-off transitions; (4)2.2 - 5.5V operation; (5)No output coupling capacitors, snubber networks or bootstrap capacitors required; (6)Unity-gain stable; (7)External gain configuration capability; (8)User selectable shutdown High or Low logic Level.

The key specifications of the LM4990ITLX can be summarized as:(1)improved PSRR at 217Hz & 1KHz 62dB; (2)power output at 5.0V, 1%; (3)THD+N, 4 (LD and MH only) 2W (typ); (4)power output at 5.0V, 1% THD+N, 8 1.25W (typ); (5)power output at 3.0V, 1% THD+N, 4 600mW (typ); (6)power output at 3.0V, 1% THD+N, 8 425mW (typ); (7)shutdown current 0.1A (typ).

The absolute maximum ratings of the LM4990ITLX can be summarized as:(1)Supply Voltage: 6.0 V;(2)Storage Temperature: -65°C to +150°C;(3)Input Voltage: -0.3V to VDD +0.3V;(4)Power Dissipation: Internally Limited;(5)ESD Susceptibility: 200 V or 2000 V;(6)Junction Temperature: 150°C;(7)Thermal Resistance: 56°C/W. If you want to know more information about it, please download the datasheet in www.seekic.com or www.chinaicmart.com .