PCM1681_15 Datasheet, PDF (1/44 Pages) Texas Instruments – PCM1681 24-Bit, 192-kHz Sampling, Enhanced Multilevel Delta-Sigma,Eight-Channel Audio Digital-to-Analog Converter

Product
Folder
Sample &
Buy
Technical
Documents
Tools &
Software
Support &
Community
Burr-Brown Audio
PCM1681, PCM1681-Q1
SLES211C – FEBRUARY 2008 – REVISED JULY 2015
PCM1681 24-Bit, 192-kHz Sampling, Enhanced Multilevel Delta-Sigma,
Eight-Channel Audio Digital-to-Analog Converter
1 Features
•1 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
2 Applications
• Car Audio External Amplifiers
• Car Audio AVN Applications
• Integrated A/V Receivers
• DVD Movie and Audio Players
• HDTV Receivers
• DVD Add-On Cards for High-End PCs
• Digital Audio Workstations
• Other Multichannel Audio Systems
3 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.
Device Information⁽¹⁾
PART NUMBER PACKAGE
BODY SIZE (NOM)
PCM1681
PCM1681-Q1
HTSSOP (28)
9.70 mm × 4.40 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
Functional Block Diagram
BCK
LRCK
DATA1 (1, 2)
DATA2 (3, 4)
DATA3 (5, 6)
DATA4 (7, 8)
MS/ADR/FMT1
MC/SCL/DEMP
MD/SDA/MUTE
MSEL
SCK
Serial
Input
I/F
8
Oversampling
Digital Filter
With
Function
Controller
Enhanced
Multilevel
Delta-Sigma
Modulator
Function
Control
I/F
System Clock
System Clock
Manager
Zero Detect
DAC
DAC
DAC
DAC
DAC
DAC
DAC
DAC
Output Amp and
Low-Pass Filter
Output Amp and
Low-Pass Filter
Output Amp and
Low-Pass Filter
Output Amp and
Low-Pass Filter
Output Amp and
Low-Pass Filter
Output Amp and
Low-Pass Filter
Output Amp and
Low-Pass Filter
Output Amp and
Low-Pass Filter
Power Supply
VOUT1
VOUT2
VOUT3
VCOM
VOUT4
VOUT5
VOUT6
VOUT7
VOUT8
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.