ISD8102 Datasheet | Nuvoton Technology

DESCRIPTION ISD8102 is a general purpose analog audio amplifier, capable of driving a 4Ω load with up to 2Wrms output power. This device includes output current limiting, chip enable, low standby current and excellent pop-and-click suppression. Also included is the ability to configure the input as single-ended. Internal resistors set the device to have default 20d B 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. ISD8102: The ISD8102 output can be configured to drive either single ended or bridge tied loads (BTL). The Mode pin controls which configuration is active. This function is useful when using the IDS8102 to alternate between driving a speaker or a mono earpiece which is connected through a shorting phone jack. The Mode pin is connected to the normally closed pin of the shorting phone jack (see figure 3.1). When nothing is plugged into the jack, the external resistor holds the Mode pin low, enabling BTL mode. When a plug is inserted, the switch is opened and the mode pin goes to 1/2 VDD, as controlled by the resistor divider, putting the amplifier into single ended mode. Note that in this example, the speaker remains connected in both cases. May 21, 2024 Page 2 of 16 Rev 1.2 2 FEATURES - Wide power supply range and excellent standby current o 2.0Vdc - 5.5Vdc operation o <1u A standby current - High output power (cap-less BTL configuration) o Up to 2W output into 4Ω load (<10% distortion) with 5.5Vdc supply voltage o < 0.1% distortion at 600m W into 8-ohms with 5Vdc supply voltage - Excellent pop-and-click performance o Low to inaudible pop/click using Chip Enable - Single-Ended or Differential signal inputs o > 75d B mon mode rejection in differential mode o > 70d B power supply noise rejection - Very fast start-up time o Less than 1msec when using Chip...