HT97230為差分輸入、可直接輸出的線路驅(qū)動器/耳機(jī)放大器。5V供電時，器件為1kΩ負(fù)載提供3VRMS輸出驅(qū)動；3.3V供電時，為600Ω負(fù)載提供2VRMS輸出驅(qū)動。5V供電時，器件為32Ω耳機(jī)負(fù)載提供125mW驅(qū)動。IC具有6dB內(nèi)部固定增益，也可利用外部電阻設(shè)置增益（目前僅提供外部電阻設(shè)置增益版本，其他版本需預(yù)定）。IC在整個音頻頻帶內(nèi)提供優(yōu)異的THD+N。
HT97230有兩個不同開啟時間(tON)版本，版本A、C和E的導(dǎo)通時間tON為5.5ms，用于耳機(jī)驅(qū)動；B和D則具有130ms的tON，用于機(jī)頂盒設(shè)計(jì)（目前僅提供A版本，其他版本需預(yù)定）。內(nèi)部電荷泵對輸入電源反相，產(chǎn)生負(fù)電源。放大器的輸出級由輸入正電源和電荷泵輸出負(fù)電源供電，雙極性供電使得輸出偏置在零電位，省去了大尺寸、容易引入失真的輸出耦合電容。ICSD開關(guān)時沒有咔嗒/噼噗聲。
HT97230具有3D環(huán)繞模式，能夠在立體聲耳機(jī)上創(chuàng)造3D環(huán)繞聲的感覺。HT97220還有具有低音增強(qiáng)模式，可依據(jù)耳機(jī)頻響特性，對某個頻段的低音進(jìn)行不同程度的提升增強(qiáng)，達(dá)到低音增強(qiáng)的效果。
HT97230提供無鉛無鹵QFN24L-PP封裝，提供QFN20L-PP封裝的定制需求。
| 價(jià)格:￥ | 庫存99999 |
數(shù)量:
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特點(diǎn)
| 應(yīng)用
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引腳定義
PIN | NAME | FUNCTION |
1 | PVDD | Charge-Pump Power-Supply Input. Bypass to PGND with 1uF. |
2 | C1P | Positive Flying Capacitor Connection. Connect a 1uF capacitor between C1P and C1N. |
3 | PGND | Power Ground. Connect PGND and SGND together at the system ground plane. |
4 | C1N | Negative Flying Capacitor Connection. Connect a 1uF capacitor between C1P and C1N. |
5 | PVSS | Negative Charge-Pump Output. Bypass to PGND with 1uF. |
6 | SGND | Signal Ground. Connect PGND and SGND, SGND1 together at the system ground plane. |
7 | SGND1 | Signal Ground. Connect PGND and SGND, SGND1 together at the system ground plane. |
8 | D3R | 3D control pin. |
9 | INRNF | Right channel feedback. |
10 | BASSR | Right channel Bass control output. |
11 | INR+ | Right Positive Polarity Input |
12 | INR- | Right Negative Polarity Input |
13 | SVDD2 /TEST | Signal Path Power-Supply Input. Bypass to PGND with 1uF. Connect directly to PVDD. |
14 | OUTR | Right Direct Drive Output |
15 | BIAS | Internal Supply Node. Bypass to PGND with 0.1uF. |
16 | OUTL | Left Direct Drive Output |
17 | CTL | 3D and Bass function control. |
18 | SVDD | Signal Path Power-Supply Input. Bypass to PGND with 1uF. Connect directly to PVDD. |
19 | INL- | Left Negative Polarity Input |
20 | INL+ | Left Positive Polarity Input |
21 | BASSL | Left channel Bass control output. |
22 | INLNF | Left channel feedback. |
23 | D3L | 3D control pin. |
24 | N_SHDN | Active-Low Shutdown. Drive N_SHDN high for normal operation. |
EP | Exposed Pad. Connect at the system ground plane. |