The MAX97220 is a differential input DirectDrive® line driver / headphone amplifier. This device is capable of driving 1kΩ with 5V power supply, 600V load with 2VRMS voltage and 3.3V and 3VRMS line horizontal load capacity. A headset with a load of 32Ω was driven into the power supply of 125MW unit at 5V. The integrated circuit adopts an internal fixed 6dB gain or an external resistor to set the gain externally. The external gain setting node can also be used to configure set-top box application filters. The IC has full audio bandwidth at special THD + N.
Two versions of the integrated circuit are available with different on-times (tons). The 5.5ms tons featured in the A and C versions of the headset are applied, while the B and D versions are equipped with 130ms tons for the purpose of set-top box applications. The on-chip charge pump reverses the power input and establishes a negative power rail. The power supply of the output stage of the amplifier is active between the input and the output of the charge pump. Bipolar supplies bias about ground output, without the need for large, distorted introduction of output coupling capacitors. Click to turn on and off the power of non-POP or IC.
The IC is available in a 3mm & TImes; 3 & TImes; 0.8mm, 16-pin TQFN package and is specified to operate in the extended temperature range of -40 ° C to + 85 ° C.
Key features
The output power is 32Ω 125MW unit powered by 5V
3VRMS output to 1kΩ driver with a 5V power supply
3VRMS output to 600Ω drive with 3.3V power supply
Fully differential input
Externally adjustable gain fixed or with any click or pop
Wide operating voltage range of 2.5V to 5.5V
DirectDrive output eliminates DC blocking capacitor
Total harmonic distortion + flat nitrogen in the audio frequency band, greater than 90DB is better
18-bit SNR performance, 121 decibels
Compatible with MAX9722
Mlcc Capacitor,Samsung Smd Capacitors,Samsung Smd Capacitors 1Uf,Mlcc Chip Capacitor
JINGGANGSHAN MEICHENG ELECTRONIC TRADING CO.,LTD , https://www.meicheng-tra.com