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NAU8331

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 extremely low standby current and excellent pop-and-click performance.

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. In addition, it has a superior fast start up response time, which is 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.   More significantly, ISD810X audio amplifier family operates at a low current consumption and at an industry leading standby current, which greatly reduces power consumption and extends battery life in the applications of toy and portable devices.

ISD8101 is capable of driving an 8Ω 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 4Ω 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 4Ω 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.

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Part No Check Disty Description SNR(dB) Output Power (W) Gain (dB) Standby Current (uA) Operating Voltage (V) Temp ( °C) Development Tools Package
ISD8101 Check Disty 1.5W Class-AB Audio Amplifier with Chip Enable, Differential/Single ended inputs, Low pop and Click 100 0.825 (5.0V) THD+N <1% , 1.1 (5.0V) THD+N <10%, 1.5 (6.8V) THD+N <10% 20 <1 2.4 to 6.8 -40 to 85 ISD-DEMO8101 8-Pin SOP 8-Pin PDIP
ISD8102 Check Disty 2W Class-AB Audio Amplifier with Head Phone Sense Input 100 2W into 4Ω at 5V THD+N <10% 20 <1 2 to 6.8 -40 to 85 ISD-DEMO8102 8-Pin SOP (Thermal ex-pad)
ISD8104 Check Disty 2W Class-AB Audio Amplifier, Differential / Single ended inputs 100 2W into 4Ω at 5V THD+N <10% 20 <1 2 to 6.8 -40 to 85 ISD-DEMO8104 8-Pin SOP (Thermal ex-pad)

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