PCM1681-Q1系列介绍资料

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PCM1681-Q1

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105dB SNR 8 通道音频 DAC（汽车类）

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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 V_PP 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 f_S, 192 f_S, 256 f_S, 384 f_S,
512 f_S, 768 f_S, or 1152 f_S 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	H/W, I2C, SPI
Resolution (Bits)	24
Architecture	Current Segment DAC
Operating temperature range (°C)	-40 to 105
Rating	Automotive

HTSSOP (PWP)

62.08 mm² 9.7 x 6.4

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PCM1681-Q1

105dB SNR 8 通道音频 DAC（汽车类）

4000-306-326