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.

• 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

• Number of DAC channels (#)
• 8
• Analog inputs
• 0
• Analog outputs
• 8
• DAC SNR (Typ) (dB)
• 105
• Sampling rate (Max) (kHz)
• 200
• Control interface
• SPI, I2C, H/W
• Resolution (Bits)
• 24
• Architecture
• Current Segment DAC

PCM1681-Q1的完整型号有：PCM1681TPWPQ1、PCM1681TPWPRQ1，以下是这些产品的关键参数及官网采购报价：

PCM1681TPWPQ1，工作温度：-40 to 105，封装：HTSSOP (PWP)-28，包装数量MPQ：50个，MSL 等级/回流焊峰值温度：Level-4-260C-72 HR，引脚镀层/焊球材料：NIPDAU，TI官网PCM1681TPWPQ1的批量USD价格：2.143（1000+）

PCM1681TPWPRQ1，工作温度：-40 to 105，封装：HTSSOP (PWP)-28，包装数量MPQ：2000个，MSL 等级/回流焊峰值温度：Level-4-260C-72 HR，引脚镀层/焊球材料：NIPDAU，TI官网PCM1681TPWPRQ1的批量USD价格：1.848（1000+）

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