PCM1681-Q1数据手册TI中文资料规格书

描述 Description

The PCM1681 and PCM1681-Q1 are CMOS monolithic integrated circuits which feature an eight-channel 24-bit audio digital-to-analog converter (DAC) and support circuitry in small 28-lead TSSOP PowerPAD packages. The DACs utilize Burr-Brown's enhanced multilevel delta-sigma (ΔΣ) architecture to achieve excellent signal-to-noise performance and a high tolerance to clock jitter.
The PCM1681 and PCM1681-Q1 accept TDM (time-division multiplexed) format in addition to industry-standard audio data formats with 16- to 24-bit audio data width. Sampling rates up to 200 kHz are supported. The PCM1681 and PCM1681-Q1 provide a sub-set of user-programmable functions through a parallel control port, in addition to a full set of user-programmable functions through a serial control port, SPI, or I2C. The PCM1681 supports –40°C to +85°C for consumer grade applications and the PCM1681-Q1 supports –40°C to +105°C for automotive audio grade systems.

特性 Features

• Qualified for Automotive Applications: PCM1681- Q1
• 24-Bit Resolution
• Analog Performance:
- Dynamic Range: 105 dB Typical
• SNR: 105 dB Typical
• THD+N: 0.002% Typical
• Full-Scale Output: 3.75 VPP Typical
• 4×/8× Oversampling Interpolation Filter:
- Stop-Band Attenuation: –57 dB
• Pass-Band Ripple: ±0.015 dB
• Sampling Frequency: 5 kHz to 200 kHz
• System Clock: 128 fS, 192 fS, 256 fS, 384 fS, 512 fS, 768 fS, or 1152 fS with Autodetect
• Zero Flags for Selectable Channel Combinations
• Flexible Mode Control:
- SPI™/I2C™ Dual Mode for Serial Port
• Parallel Hardware Control with 4 Functions
• User-Programmable Functions (in SPI/I2C):
- Flexible Audio Data Formats:
- Right-Justified, I2S™, Left-Justified, TDM,DSP
• 16- and 24-Bit Audio Data
• Digital Attenuation: Mode Selectable
- 0 dB to –63 dB, 0.5 dB/step
• 0 dB to –100 dB, 1 dB/step
• Soft Mute
• Digital De-Emphasis
• Digital Filter Roll-Off: Sharp or Slow
• Oversampling Mode
• User-Programmable Functions (in H/W):
- Flexible Audio Data Formats:
- Right-Justified, I2S, Left-Justified, TDM
• Soft Mute
• Digital De-Emphasis
• Oversampling Mode

• Power Supply Voltage: 5-V Analog, 3.3-V Digital
• Package: 28-Lead HTSSOP PowerPAD
• Operation Temperature Range:
- –40°C to 85°C for Consumer Grade
• –40°C to 105°C for Automotive Audio Grade