品牌:中微爱芯 | 型号:HT97180 | 类型:其他IC |
封装:QFN16 | 批号:2021+ |
The HT97180(L) is a differential input Direct Drive line
driver/headphone amplifier, which can also drive single-ended
input signal. It is capable of being driven with 125mW into 32惟
with a 4.2V supply. The IC is offered with an externally set gain
through external resistors (or an internally fixed 6dB gain which
needs to be pre-booked. The external gain setting nodes can
also be used to configure filters for set-top box applications.
The IC has exceptional THD+N over the full audio bandwidth.
Two versions of the IC can be chosen with different turn-on
times (tON). The versions for headphone applications feature a
tON of 4.2ms while the version, intended for set-top-box
applications, which needs to be pre-booked, feature a 130ms
tON. An on-chip charge pump inverts the power-supply input,
creating a negative rail. The output stage of the amplifier is
powered between the positive input supply and the output of
the charge pump. The bipolar supplies bias the output about
ground, eliminating the need for large, distortion-introducing
output coupling capacitors. The IC shutdowns and startups
without click-pop noise.
The IC is available in a 3mm x 3mm, 16-pin QFN-PP and is
specified over the extended -40掳C to +85掳C temperature range.