Diodes introduces a popular microphone driver enhancement offering high performance at low voltages

Jun 16 2020 2020-06 Power Diodes Incorporated

Diodes Corporation announced an enhanced version of its popular sound driver to address the needs of small and portable devices. The PAM8904E comes in a lightweight package that delivers higher performance at lower voltages. Micro piezoelectric and ceramic sounders are now available in the form of audio user interfaces for a wide range of product applications such as trackers, alarms, health monitors, safety devices and smart sensors. The microphone is small enough to fit on portable and wearable devices such as IoT-enabled trackers, and can also support tiny smart sensors that monitor the environment, including security detectors, water alarms, smoke alarms, and carbon dioxide alarms.

The PAM8904EGPR comes in W-QFN2020-12 Type A package with dimensions of 2.00mm × 2.00mm (width) × 0.80mm (height). The PAM8904E microphone driver has been carefully designed to meet the needs of the smallest applications operating at very low voltages. The PAM8904E requires very few external components to support single-ended and differential output modes.

The device has a wide input voltage supply range of 1.5V to 5.5V, and the turn-off current consumption does not exceed 1µA. In addition, the microphone can also receive input signals between 20Hz and 300kHz. Despite its small size, the PAM8904E integrates charge pump boost converters that can operate in 1x, 2x and 3x modes. As a result, the PAM8904E can produce a peak output voltage of up to 18V at a supply voltage of 3V or 27V at a supply voltage of 4.5V.

This enhanced product is now capable of driving sound loads up to 47nF, much higher than the drive capacity of other devices. Many other devices typically drive only 15nF loads and require a higher supply voltage. In addition to the above advantages, the PAM8904E also has functions such as overheat shutdown, overcurrent protection, short circuit protection, automatic shutdown and wake-up system to help extend the service life of battery-powered devices.

The Products You May Be Interested In

1084	MECHANICAL DECADE COUNTERS - SMA	136 More on Order
3758	SWITCH JOYSTICK 4 WAY 4A 250V	266 More on Order
4186	RED LED ILLUMINATED TRIANGLE PUS	422 More on Order
3432	SWITCH PUSH SPST-NO BLU 10MA 5V	577 More on Order
3487	SWITCH PUSH SPST-NO GRN 10MA 5V	406 More on Order
3433	SWITCH PB ILLUMINATED	396 More on Order
3930	SENSOR OPT REFLECTIVE RADIAL	487 More on Order
1298	SOIL TEMPERATURE/MOISTURE SENSOR	490 More on Order
635	STARTER PK EL STRIP 100CM WHITE	145 More on Order
588	WIRE STARTER PK EL PNK 2.5M-8.2'	149 More on Order
545	STARTER PACK EL WIRE AQUA 2.5M	353 More on Order
416	ELECTROLUMINESC STRIP 100CM WHT	231 More on Order
2554	DIGITAL RGB LED WEATHERPROOF STR	360 More on Order
2847	ADDRESS LED STRIP SERIAL RGBW 1M	466 More on Order
2536	NEOPIXEL DIGITAL RGB LED STRIP -	378 More on Order
2533	DOTSTAR LED STRIP - ADDRESSABLE	121 More on Order
1050	ADDRESS LED MATRIX I2C YELLOW	465 More on Order
2851	ADDRESS LED RING SERIAL RGBW	441 More on Order
3649	ADDRESS LED MATRIX SERIAL RGB	244 More on Order
2969	ADDRESS LED STRIP SERIAL RGB 1M	458 More on Order
2232	HDMI DISPLAY BACKPACK W/O TOUCH	558 More on Order
1854	SMALL 1.2 8X8 ULTRA BRIGHT SQUAR	148 More on Order
2972	LED CHARLIEPLEXED MATRIX - 9X16	261 More on Order
2277	64X32 RGB LED MATRIX - 5MM PITCH	426 More on Order