ISL99201IRTDZ-TK

The ISL99201IRTDZ-TK is a fully integrated high efficiency class-D mono amplifier. It is designed to maximize performance for mobile phone applications. The application circuit requires a minimum requirement of external components and operates from a 2.4V to 5.5V input supply. It is capable of delivering 1.4W of continuous output power with less than 1% THD+N driving a 8Ω load from a 5V supply.The ISL99201IRTDZ-TK features a high-efficiency, low-noise modulation scheme. It operates with 86% efficiency at 400mW into 8Ω and has a signal-to-noise ratio (SNR) that is better than 95dB. The ISL99201IRTDZ-TK has a micro-power shutdown mode with a typical shutdown current of 200nA. Shutdown is enabled by applying a logic low to the SD pin.The architecture of the devices allows it to achieve very low level of pop-and-click. This minimizes voltage glitches at the output during turn-on and turn-off, thus reducing audible noise on activation and deactivation.The fully differential input of the ISL99201IRTDZ-TK provides excellent rejection of common mode noise on the input typically 75dB. EMI suppression is achieved by SRC (Slew Rate Control).The ISL99201IRTDZ-TK oscillator can be synchronized to an external clock through the SYNC input, allowing the switching frequency to be externally defined. The SYNC input also allows multiple ISL99201IRTDZ-TK to be cascaded and frequency locked; minimizing interference due to clock intermodulation.The ISL99201IRTDZ-TK also has excellent rejection of power supply noise, including noise caused by GSM transmission bursts and RF rectification. PSRR is typically 75dB at 217Hz. There will be 4 versions of the part; they will consist of three fixed gain settings (6dB, 9. 6dB, 12dB) and one user programmable gain setting (need external resistors).The ISL99201IRTDZ-TK has built-in thermal shutdown and output short-circuit protection.

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