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
