Date: 22/03/2011

High-fidelity class AB audio amplifier ICs delivering 100dB Signal to Noise Ratio

Nuvoton has announced three audio amplifiers in its line of emPowerAudio solutions. The ISD810X is a family of audio Class-AB amplifier capable of driving a resistive speaker load with up to 2Wrms output power. These amplifiers include current limiting and a chip enable pin with low standby current and less pop-and-click noise.

ISD810X can be configured with either single-ended or differential inputs. Internal resistors set the device to have 20dB gain, and with external resistors any gain less than this can be achieved. The device is unity gain stable, including use with external feedback resistors and external capacitors as may be optionally used for implementing simple filtering functions. Also features fast start up response time suitable for the fast MCU response.

ISD810X family is based on high-fidelity audio amplifier architecture delivering 100dB Signal to Noise Ratio (SNR) and THD of < 0.1% @ 0.8W with a 5V supply ISD810X's wide 2V to 6.8V supply voltage offers a flexibility of power source from Li-Ion batteries or a combination of 2 to 4 alkaline batteries.

ISD8101 is capable of driving an 8 ohms load with up to 1.5Wrms output power, and able to operate at 2.4V to 6.8V supply voltage. Differential Analog inputs can be used in ISD8101.

ISD8102 is capable of driving a 4 ohms load with up to 2Wrms output power, and able to operate at 2V to 6.8V supply voltage. Headphone sense mode is implemented to control either Single-Ended Output or BTL output.

ISD8104 is capable of driving a 4 ohms load with up to 2Wrms output power, and able to operate at 2V to 6.8V supply voltage. Differential Analog inputs can be used in ISD8104.


Package: 8-SOP (with or without thermal ex-pad) package
Availability: Now in samples

Price:
ISD8101: below US$0.3 in quantities of 5000
ISD8102/ISD8104: below US$0.5 in quantities of 5000