98dB SNR Low-Power Stereo DAC with line-out (S/W Control) - PCM1772

PCM1772 (ACTIVE)

98dB SNR Low-Power Stereo DAC with line-out (S/W Control)

 

Recommended alternative parts

  • PCM5121  -  106dB Stereo DAC with 32bit resolution, up 384kHz sampling frequency, S/W control, no mono line in
  • PCM5122  -  112dB Stereo DAC with 32bit resolution, up 384kHz sampling frequency, S/W control, no mono line in

Description

The PCM1772 and PCM1773 devices are CMOS, monolithic, integrated circuits which include stereo digital-to-analog converters, lineout 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 PCM1772 and PCM1773 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.

Features

  • Multilevel DAC Including Lineout Amplifier
  • Analog Performance (VCC1,VCC2 = 2.4 V):
    • Dynamic Range: 98 dB Typ
    • THD+N at 0 dB: 0.007% Typ
  • 1.6-V to 3.6-V Single Power Supply
  • Low Power Dissipation: 6 mW at VCC1, VCC2 = 2.4 V
  • System Clock: 128 fS, 192 fS, 256 fS, 384 fS
  • Sampling Frequency: 5 kHz to 50 kHz
  • Software Control (PCM1772):
    • 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 (PCM1773):
    • 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

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Parametrics Compare all products in Audio 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$)
PCM1772 PCM1770 PCM1771 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    SPI    H/W    H/W    SPI
I2C   
24    24    24    24    16   
Multilevel Delta-Sigma    Multilevel Delta-Sigma    Multilevel Delta-Sigma    Multilevel Delta-Sigma    Delta-Sigma   
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)
20VQFN: 18 mm2: 4.2 x 4.2(VQFN)   
20QFN: 16 mm2: 4 x 4(QFN)   
1.36 | 1ku    1.55 | 1ku    1.36 | 1ku    1.55 | 1ku    1.30 | 1ku