PCM1681
- 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
- Right-Justified, I2S™, Left-Justified, TDM,
- 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
- Flexible Audio Data Formats:
- User-Programmable Functions (in H/W):
- Flexible Audio Data Formats:
- Right-Justified, I2S, Left-Justified, TDM
- Soft Mute
- Digital De-Emphasis
- Oversampling Mode
- Flexible Audio Data Formats:
- 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
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.
Technical documentation
| Type | Title | Date | ||
|---|---|---|---|---|
| * | Data sheet | PCM1681 24-Bit, 192-kHz Sampling, Enhanced Multilevel Delta-Sigma, Eight-Channel Audio Digital-to-Analog Converter datasheet (Rev. C) | PDF | HTML | 31 Jul 2015 |
| User guide | DEM-PCM1681 Evaluation Module | 05 Apr 2008 | ||
| Application note | A Low Noise, Low Distortion Design for Antialiasing and Anti-Imaging Filters | 27 Sep 2000 | ||
| Application note | THD+N Versus Frequency Characteristics and Spectra of the PCM1717/18/19/20/23/27 | 27 Sep 2000 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.
PCM1681SW-LINUX — Linux Driver for PCM1681
Linux main line status
Available in Linux main line: Yes
Available through git.ti.com: N/A
Linux source files
The files associated (...)
PSPICE-FOR-TI — PSpice® for TI design and simulation tool
| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| HTSSOP (PWP) | 28 | Ultra Librarian |
Ordering & quality
- RoHS
- REACH
- Device marking
- Lead finish/Ball material
- MSL rating/Peak reflow
- MTBF/FIT estimates
- Material content
- Qualification summary
- Ongoing reliability monitoring
- Fab location
- Assembly location
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