PCM1770
- Multilevel DAC Including Headphone Amplifier
- Analog Performance (VCC, VHP = 2.4 V):
- Dynamic Range: 98 dB Typ
- THD+N at 0 dB: 0.1% Typ
- THD+N at -20 dB: 0.04% Typ
- Output Power at RL = 16
: 13 mW
(Stereo), 26 mW (Monaural)
- 1.6-V to 3.6-V Single Power Supply
- Low Power Dissipation: 6.5 mW at VCC, VHP = 2.4 V
- System Clock: 128 fS, 192 fS, 256 fS, 384 fS
- Sampling Frequency: 5 kHz to 50 kHz
- Software Control (PCM1770):
- 16-, 20-, 24-Bit Word Available
- Left-, Right-Justified, and I2S
- Slave/Master Selectable
- Digital Attenuation: 0 dB to -62 dB, 1 dB/Step
- 44.1-kHz Digital De-Emphasis
- Zero Cross Attenuation
- Digital Soft Mute
- Monaural Analog-In With Mixing
- Monaural Speaker Mode
- Hardware Control (PCM1771):
- Left-Justified and I2S
- 44.1-kHz Digital De-Emphasis
- Monaural Analog-In With Mixing
- Pop-Noise-Free Circuit
- 3.3-V Tolerant
- Packages: TSSOP-16 and VQFN-20
- APPLICATIONS
- Portable Audio Player
- Cellular Phone
- PDA
- Other Applications Requiring Low-Voltage Operation
The PCM1770 and PCM1771 devices are CMOS, monolithic, integrated circuits which include stereo digital-to-analog converters, headphone circuitry, and support circuitry in small TSSOP-16 and VQFN-20 packages.
The data converters use TI's enhanced multilevel
architecture, which employs noise shaping and multilevel amplitude quantization to achieve excellent dynamic performance and improved tolerance to clock jitter. The PCM1770 and PCM1771 devices accept several industry standard audio data formats with 16- to 24-bit data, left-justified, I2S, etc., providing easy interfacing to audio DSP and decoder devices. Sampling rates up to 50 kHz are supported. A full set of user-programmable functions is accessible through a 3-wire serial control port, which supports register write functions.
技術資料
| 上位の文書 | タイプ | タイトル | フォーマットオプション | 最新の英語版をダウンロード | 日付 | |
|---|---|---|---|---|---|---|
| * | データシート | Low-Voltage and Low-Power Stereo Audio DAC w/Headphone Amp データシート (Rev. E) | 2007/03/29 | |||
| アプリケーション・ノート | A Low Noise, Low Distortion Design for Antialiasing and Anti-Imaging Filters | 2000/09/27 | ||||
| アプリケーション・ノート | THD+N Versus Frequency Characteristics and Spectra of the PCM1717/18/19/20/23/27 | 2000/09/27 |
設計と開発
その他のアイテムや必要なリソースを参照するには、以下のタイトルをクリックして詳細ページをご覧ください。
SLAC224 — PCM1770EVM - Graphical User Interface (GUI) Software (v1.0)
| パッケージ | ピン数 | CAD シンボル、フットプリント、および 3D モデル |
|---|---|---|
| TSSOP (PW) | 16 | Ultra Librarian |
| VQFNP (RGA) | 20 | Ultra Librarian |