INT
CS43131
130-dB, 32-Bit High-Performance DAC with Integrated Headphone Driver
and Impedance Detection
System Features
Direct Stream Digital (DSD ) path
Enhanced oversampling DAC architecture Up to 256Fs DSD
32-bit resolution Patented DSD processor
Up to 384-kHz sampling rate On-chip 50-kHz filter to meet Scarlet Book Super
Audio Compact Disk (SACD) recommendations
Low clock jitter sensitivity
Matched PCM and DSD analog output levels
Auto mute detection
Nondecimating volume control with 0.5-dB step size
Integrated high performance, ground-centered stereo
and soft ramp
headphone outputs
DSD and Pulse-code modulation (PCM) mixing for
130-dB dynamic range (A-weighted)
alerts
115-dB total harmonic distortion + noise (THD+N)
Dedicated DSD and DoP pin interface
110-dB interchannel isolation
Serial audio input path
Up to 2-V stereo output
rms
Programmable Hi-Fi digital filter
Headphone power output
Five selectable digital filter responses
30 mW per channel into 32
Low-latency Mode minimizes pre-echo
5 mW per channel into 600
110 dB of stopband attenuation
Headphone detection
Supports sample rates from 32 to 384 kHz
Headphone DC and AC impedance measurement
2
I S, right-justified, left-justified, TDM, and
Headphone plug-in detection
DSD-over-PCM (DoP) interface
Popguard technology eliminates pop noise
Master or slave operation
Integrated PLL
Volume control with 0.5-dB step size and soft ramp
Support for 11.2896-/22.5792-, 12.288-/24.576-, 9.6-/
44.1 kHz deemphasis and inverting feature
19.2-, 12-/24-, and 13-/26-MHz system MCLK rates
Alternate headphone input
Reference clock sourced from XTI/MCLK pin
40-pin 5mm 5mm QFN or 42-ball CSP package options
System clock output
Applications
Mono Mode (differential) support
Smart phones, tablets, portable media players, laptops,
2
I C controlup to 1 MHz
digital headphones, powered speakers, AVR, home
Wideband Flatness Mode Support
theater systems, Blu-ray/DVD/SACD players, and pro
audio
Interface Internal
Analog Supply
Supply (VD)
Supply (VL) (VA,VCP)
TSO Battery Supply
+1.8V +1.8V FILT+ FILT- HPINA
+1.8V
(VP)
FLYC_VCP
FLYP_VCP
FLYN _VCP
Interrupt
Internal
VCP_FILT+
Digital LDOs
Sources
Voltage Charge Pump
VCP_FILT -
Reference
Digital Core FLYP_VA
FLYN_VA
-VA
Interpolation VA
PLL
VCP_FILT +
CLKOUT
Filter and
Multibit
Volume DAC and
+
Control Filter
HPOUTA
Modulator
XTAL
XTO
OSC -VA
VCP_FILT-
VA
Interpolation
XTI/MCLK
VCP_FILT+
Filter and
Multibit
DAC and
SCLK1 Volume
+
ASP
Filter
Control
HPOUTB
Modulator
LRCK1
-VA
SDIN1
VCP_FILT -
DoP to
DSDCLK/SCLK2
XSP/DSD DSD
DSD
DSDB/LRCK2 Engine
Audio
Processor
Interface
DSDA/SDIN2
HP Detect, HPREFA
Popguard
HP Impedance
HPREFB
Circuitry
Detect and
Register /Hardware
HP_DETECT
Control Port Level Translator
Measure
Configuration
SDA SCL HPINB
ADR
RESET
Copyright Cirrus Logic, Inc. 20152017
DS1155F1
(All Rights Reserved)
OCT 17
CS43131
General Description
The CS43131 is a high-performance, 32-bit resolution, stereo audio DAC that supports up to 384-kHz sampling frequency
with integrated low-noise ground-centered headphone amplifiers. The advanced 32-bit oversampled multibit modulator
with mismatch shaping technology eliminates distortion due to on-chip component mismatch. Proprietary
digital-interpolation filters support five selectable filter responses with pseudo-linear phase and ultralow latency to
minimize pre-echos and ringing artifacts. An on-chip programmable filter is available for further response customization.
Other features include volume control with 0.5-dB steps, wideband flatness mode support, and digital deemphasis for
44.1-kHz sample rate.
The integrated ground-centered stereo headphone amplifiers are capable of delivering more than 30 mW into 32- load
or 5 mW into 600- load per channel at full performance. It is also capable of generating 2 V on a 600- load.
rms
Proprietary headphone impedance detection enables wide-band impedance detection for further digital post-processing.
An internal stereo audio switch with true bypass supports an alternate analog input path for interfacing with external audio
sources to minimize the overall bill-of-materials cost and PCB area.
The patented on-chip DSD processor preserves audio integrity by allowing signal processing such as volume control and
50-kHz Scarlet Book recommended filtering to be applied directly to the DSD stream without an intermediate decimation
stage. Additional features like volume matching and channel mixing enable seamless transition between DSD and PCM
playback paths.
2
The CS43131 accepts I S, right-justified, left-justified, and TDM-format PCM data at sample rates from 32 to 384 kHz. The
2
industry-standard high-speed I C interface capable of up to 1-MHz operation provides easy configuration control. An
integrated PLL allows for maximum clocking flexibility in any system. Popguard technology eliminates output transients
upon power-up or power-down events.
The CS43131 is available in a commercial-grade 42-ball WLCSP or 40-pin QFN package for operation from 10C to
+70C.
2 DS1155F1