Overview
The PCM1770PWR is a low-power, stereo digital-to-analog converter (DAC) with a built-in headphone amplifier, produced by Texas Instruments. This CMOS, monolithic integrated circuit is designed to provide high-quality audio performance in a compact TSSOP-16 package. It features advanced multilevel Δ-Σ architecture, which enhances dynamic performance and tolerance to clock jitter. The device supports various industry-standard audio data formats and offers a range of user-programmable functions through a 3-wire serial control port.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage (VCC, VHP) | 1.6 to 3.6 | V |
| System Clock Frequency | 128 fS, 192 fS, 256 fS, 384 fS | - |
| Sampling Frequency (fS) | 5 kHz to 50 kHz | - |
| Resolution | 24 Bits | - |
| 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 Ω | 13 mW (Stereo), 26 mW (Monaural) | mW |
| Power Dissipation | 6.5 mW at VCC, VHP = 2.4 V | mW |
| Operating Temperature Range | -25 to 85 °C | °C |
| Package Type | TSSOP-16 | - |
Key Features
- Low power dissipation: 6.5 mW at VCC, VHP = 2.4 V.
- Support for 16-, 20-, and 24-bit word lengths and various audio data formats (left-justified, I2S, etc.).
- Digital attenuation: 0 dB to -62 dB, 1 dB/step.
- 44.1-kHz digital de-emphasis and zero cross attenuation.
- Digital soft mute and monaural analog-in with mixing.
- Pop-noise-free circuit and 3.3-V tolerant inputs.
- Software control via a 3-wire serial control port.
Applications
- Portable audio players.
- Cellular phones.
- Personal Digital Assistants (PDAs).
- Other applications requiring low-voltage operation.
Q & A
- What is the power supply voltage range for the PCM1770PWR? The power supply voltage range is 1.6 V to 3.6 V.
- What are the supported system clock frequencies? The supported system clock frequencies are 128 fS, 192 fS, 256 fS, and 384 fS.
- What is the maximum sampling frequency supported by the PCM1770PWR? The maximum sampling frequency supported is 50 kHz.
- What is the resolution of the PCM1770PWR? The resolution is 24 bits.
- What is the typical dynamic range of the PCM1770PWR? The typical dynamic range is 98 dB.
- How much power does the PCM1770PWR dissipate at VCC, VHP = 2.4 V? The power dissipation is 6.5 mW at VCC, VHP = 2.4 V.
- What is the operating temperature range of the PCM1770PWR? The operating temperature range is -25 to 85 °C.
- What package type is the PCM1770PWR available in? The PCM1770PWR is available in a TSSOP-16 package.
- Does the PCM1770PWR support digital attenuation? Yes, it supports digital attenuation from 0 dB to -62 dB, 1 dB/step.
- Is the PCM1770PWR suitable for portable audio applications? Yes, it is suitable for portable audio applications due to its low power consumption and compact package.
