低消費電力、ステレオ DAC、ヘッドフォン・アンプ(S/W 制御)内蔵 - PCM1770

PCM1770 (供給中)

低消費電力、ステレオ DAC、ヘッドフォン・アンプ(S/W 制御)内蔵

 

概要

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.

特長

  • 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

詳細を表示

機能一覧 他の製品と比較 DA コンバータ(DAC)

 
DAC Channels
Analog Inputs
Analog Outputs
DAC SNR (Typ) (dB)
Sampling Rate (Max) (kHz)
Control Interface
Resolution (Bits)
Architecture
Package Size: mm2:W x L (PKG)
Approx. Price (US$)
PCM1770 PCM1771 PCM1772 PCM1773 PCM1774
2    2    2    2    2   
0    0    0    0    0   
2    2    2    2    2   
98    98    98    98    93   
48    48    48    48    50   
SPI    H/W    SPI    H/W    SPI
I2C   
24    24    24    24    16   
Multilevel Delta-Sigma    Multilevel Delta-Sigma    Multilevel Delta-Sigma    Multilevel Delta-Sigma    Delta-Sigma   
20VQFN: 18 mm2: 4.2 x 4.2(VQFN)
16TSSOP: 32 mm2: 6.4 x 5(TSSOP)   
20VQFN: 18 mm2: 4.2 x 4.2(VQFN)
16TSSOP: 32 mm2: 6.4 x 5(TSSOP)   
20VQFN: 18 mm2: 4.2 x 4.2(VQFN)
16TSSOP: 32 mm2: 6.4 x 5(TSSOP)   
20VQFN: 18 mm2: 4.2 x 4.2(VQFN)
16TSSOP: 32 mm2: 6.4 x 5(TSSOP)   
20QFN: 16 mm2: 4 x 4(QFN)   
1.55 | 1ku    1.36 | 1ku    1.36 | 1ku    1.55 | 1ku    1.30 | 1ku