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ROHM Semiconductor
32-bit, 768 kHz Sampling Stereo Audio D/A Converter BD34301EKV

32-bit, 768 kHz Sampling Stereo Audio D/A Converter BD34301EKV

Product catalog summary

General Description: The BD34301EKV is a high-quality 32-bit stereo audio D/A converter by ROHM, featuring a high signal-to-noise ratio (SNR) of 130 dB and a total harmonic distortion plus noise (THD+N) of -115 dB. It supports PCM interface up to 768 kHz and DSD interface up to 22.4 MHz, making it ideal for high-end audio applications.

Features: Part of the MUS-ICTM series, it includes two types of digital FIR filters (Sharp Roll-Off and Slow Roll-Off), supports stereo and mono modes, and offers selectable device addresses.

Applications: Suitable for CD/SACD players, digital audio players, USB-DACs, and other audio devices.

Key Specifications: Supply voltage ranges are 4.5 V to 5.5 V for AVCC, 1.4 V to 1.6 V for DVDD, and 3.0 V to 3.6 V for DVDDIO. Operational temperature range is -25 °C to +85 °C.

Package: Available in an HTQFP64BV package with dimensions of 12.0 mm x 12.0 mm x 1.0 mm.

Typical Application Circuit: Includes a detailed schematic for connections of left and right channel outputs, power supplies, and digital interfaces.

Pin Configuration and Descriptions: Comprehensive pin configuration diagram and descriptions are provided, detailing the function of each pin.

Operational Notes: Emphasizes maintaining recommended external component values for optimal sound quality and provides guidance on power-on/off sequences, mode switching, and system clock settings.

Conclusion: The BD34301EKV is a versatile, high-performance audio D/A converter suitable for high-end audio applications, offering flexibility in sound quality settings and robust support for various audio formats.

Overview: The BD34301EKV supports both PCM and DSD audio formats and is equipped with features for audio processing and control.

Block Diagram: Illustrates the internal structure, highlighting components such as PCM and DSD interfaces, a master clock, system control, and audio function control.

Specifications: Supports 32 kHz to 768 kHz PCM input sampling frequency and 2.8 MHz to 22.4 MHz DSD. Includes a 2-wire interface for register settings with a 400 kHz data transmission speed.

Absolute Maximum Ratings: Supply Voltage: AVCC and DVDDIO up to 7.0 V, DVDD up to 2.1 V. Storage Temperature: -55 to +150 °C.

Thermal Resistance: Junction to Ambient: 64.5 °C/W (1s), 16.1 °C/W (2s2p).

Recommended Operating Conditions: Operating Supply Voltage: AVCC 4.5-5.5 V, DVDDIO 3.0-3.6 V, DVDD 1.4-1.6 V. Operating Temperature: -25 to +85 °C.

Electrical Characteristics: Power Supply Current: AVCC up to 45.0 mA, DVDDIO up to 100 μA. PCM AC Characteristics: SNR up to 130 dB, THD+N as low as -115 dB.

Measurement Circuit: Provides details on connections and components used for testing the IC's performance.

DC Characteristics: High Level Input Voltage: 0.8 x DVDDIO V. Low Level Input Voltage: 0.2 x DVDDIO V.

AC Characteristics: MCLK Frequency: 2.8224 to 49.1520 MHz. LRCLK Frequency: 32 to 768 kHz.

2-wire I/F: Describes the transmission format and device address settings for communication with the IC.

Write and Read Operations: Details the process for writing and reading data, including auto-incremental addressing.

Register Map: Provides a comprehensive register map detailing address, register name, read/write permissions, initial values, and bit functions.

Recommendations and Limitations: Advises against altering settings with fixed 0 or 1 values in the register map and notes specific functions may be unavailable depending on clock settings.

Figures and Tables: Includes figures illustrating data formats and tables detailing operational sequences and register settings.

Volume Control and Transition: Describes a volume control system using a 2-wire interface with specified transition times.

Mute Transition Time: Controls mute transition time with various settings for different sampling frequencies.

Mute Control: Manages digital mute control for left and right channels.

RAM Clear: Used for RAM clear and initialization when changing clock and filter settings.

FIR Filter Settings: Configures FIR filters with options for sharp and slow roll-off.

De-Emphasis Control: Manages de-emphasis settings for different sampling frequencies.

Delta Sigma Modulator: Configures the ΔΣ modulator, allowing changes to the oversampling rate.

System Clock Settings: Outlines system clock requirements for PCM and DSD modes.

Power-On Sequence: Details the power-on sequence to prevent pop noise.

Power-Off Sequence: Requires turning off the power supply in a specific order.

Mode Switching Sequence: Details the process for switching between PCM and DSD modes.

Recommended Settings: Provides recommended settings for PCM and DSD modes.

Sound Settings: Additional register settings for sound quality adjustments.

Application Examples: Provides application circuits for stereo 2-channel, mono mode, and 4-channel configurations.

Application Circuit: Details application circuits for 4-channel and 8-channel outputs.

Operational Notes: Includes precautions against reverse polarity and guidelines for power supply and ground wiring.

Recommended Operating Conditions: Warns about potential inrush current during power-up.

Testing and Handling: Advises precautions during testing to avoid stress on the IC.

Parasitic Elements: Explains the presence of parasitic diodes and transistors within the IC structure.

Ceramic Capacitors: Considers changes in capacitance due to temperature and DC bias.

Ordering Information: Available in an HTQFP64BV package with specific packaging specifications.

Precautions: Outlines precautions for using ROHM products and provides guidelines for storage, transportation, and handling.

Catalog excerpts

32-bit, 768 kHz Sampling Stereo Audio D/A Converter BD34301EKV-1

Datasheet High Sound Quality Audio D/A Converters 32-bit, 768 kHz Sampling Stereo Audio D/A Converter BD34301EKV General Description Supply Voltage Range of AVCC(Note 2) 4.5 V to 5.5 V Supply Voltage Range of DVDD 1.4 V to 1.6 V Supply Voltage Range of DVDDIO 3.0 V to 3.6 V SNR(Note 1) 130 dB (Typ) THD+N(Note 1) -115 dB (Typ) Dynamic Range(Note 1) 130 dB (Typ) Operation Temperature Range -25 °C to +85 °C BD34301EKV is 32-bit high sound quality Stereo Audio D/A converter with ROHM original sound quality design, realizing excellent numerical performance (SNR: 130 dB (Typ), THD+N: -115 dB (Typ)) suitable for high-end audio. Favourite sound is selectable by switching 2 kinds of digital FIR filters (Sharp Roll-Off, Slow Roll-Off). PCM I/F supports up to 768 kHz and DSD I/F supports up to 22.4 MHz. MUS-ICTM Series SNR 130 dB (Typ), THD+N -115 dB (Typ) (Note 1) Sampling Frequency 32 kHz to 768 kHz(Note 1) 2 Kinds of Digital FIR Filters (Note 1) DSD 2.8 MHz, 5.6 MHz, 11.2 MHz, 22.4 MHz Available Supports Stereo Mode (2ch) and Mono Mode (1ch) Selectable 4 Device Addresses (38h, 3Ah, 3Ch, 3Eh) CD/SACD Player Digital Audio Player (DAP) USB-DAC and Others (Note 1) PCM mode (Note 2) AVCC, AVCC_R and AVCC_L in Typical Application Circuit Typical Application Circuit IOUT_LP BCLK Current Segment Over Sampling Digital FIR Filter Control VREF Modulator VREF_L (Note 3) The written values of external parts are checked by sound test. Changing these values can affect the sound quality. Please check the sound when the values are changed. Current Segment Master Clock Figure 1. Typical Application Circuit MUS-ICTM is a trademark or a registered trademark of ROHM Co., Ltd. 〇Product structure : Silicon integrated circuit www.rohm.com © 2020 ROHM Co., Ltd. All rights reserved. TSZ22111 • 14 • 001 〇This product

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32-bit, 768 kHz Sampling Stereo Audio D/A Converter BD34301EKV-2

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32-bit, 768 kHz Sampling Stereo Audio D/A Converter BD34301EKV-3

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32-bit, 768 kHz Sampling Stereo Audio D/A Converter BD34301EKV-4

Figure 2. Pin Configuration Caution: Open the N.C. pins and the TEST pins (TEST1 to TEST7). The EXP-PAD should be connect to AGND. www.rohm.com © 2020 ROHM Co., Ltd. All rights reserved. TSZ22111 • 15 • 001

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32-bit, 768 kHz Sampling Stereo Audio D/A Converter BD34301EKV-5

Digital ground Digital core power supply (1.5 V) Digital ground Digital I/O power supply (3.3 V) PCM I/F serial data / DSD1 data Digital ground Digital core power supply (1.5 V) Rch analog power supply (5.0 V) Rch analog power supply (5.0 V) www.rohm.com © 2020 ROHM Co., Ltd. All rights reserved. TSZ22111 • 15 • 001

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32-bit, 768 kHz Sampling Stereo Audio D/A Converter BD34301EKV-6

Rch analog power supply (5.0 V) Rch analog power supply for Current Segment (5.0 V) Rch analog power supply for Current Segment (5.0 V) Rch analog power supply for Current Segment (5.0 V) Rch analog power supply for Current Segment (5.0 V) Rch external capacitor (Recommended: 0.1 μF + 100 μF) Analog ground Rch external register (Recommended: 910 Ω) Lch external register (Recommended: 910 Ω) Analog power supply (5.0 V) Lch external capacitor (Recommended: 0.1 μF + 100 μF) Lch analog power supply for Current Segment (5.0 V) Lch analog power supply for Current Segment (5.0 V) Lch analog power supply...

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32-bit, 768 kHz Sampling Stereo Audio D/A Converter BD34301EKV-7

Block Diagram Current Segment Current Segment System Control Master Clock Over Sampling Digital FIR Filter Figure 3. Block Diagram Table 1. Description of Blocks Block PCM I/F DSD I/F Description Digital audio interface for PCM audio format 2ch stereo Supports 32 kHz to 768 kHz input sampling frequency Supports 16-bit to 32-bit data formats BCLK = 64 fs Digital audio interface for DSD audio format 2ch stereo Supports 2.8 MHz, 5.6 MHz, 11.2 MHz, 22.4 MHz DSD Master Clock Clock control 2-wire interface block for register settings Supports 400 kHz data transmission speed 4 device addresses (38h,...

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32-bit, 768 kHz Sampling Stereo Audio D/A Converter BD34301EKV-8

BD34301EKV Absolute Maximum Ratings (Ta = 25 °C) Parameter Input Voltage Storage Temperature Range Supply Voltage Maximum Junction Temperature Caution 1: Operating the IC over the absolute maximum ratings may damage the IC. The damage can either be a short circuit between pins or an open circuit between pins and the internal circuitry. Therefore, it is important to consider circuit protection measures, such as adding a fuse, in case the IC is operated over the absolute maximum ratings. Caution 2: Should by any chance the maximum junction temperature rating be exceeded the rise in temperature...

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32-bit, 768 kHz Sampling Stereo Audio D/A Converter BD34301EKV-9

Unless otherwise specified Ta = 25 °C, AVCC = 5.0 V, DVDDIO = 3.3 V, DVDD = 1.5 V, Input signal frequency = 1 kHz, 20kHz AES17 LPF, Differential output (XLR) measurement, PCM Mode, 24-bit I2S input, fs = 44.1 kHz, MCLK = 11.2896 MHz, Clock 2 (06h) = 01h, FIR Filter 1 (30h) = 01h, FIR Filter 2 (31h) = 80h, Delta Sigma (40h) = 00h Limit Parameter Symbol Unit Conditions Min Typ Max Power Supply Current IAVCC AVCC_L + AVCC_R + AVCC -∞ dBFS (PCM, No signal) DVDDIO Current Dynamic Range Channel Gain Mismatch Output Center Current Peak Output Current Sampling Frequency AVCC Current 0 dBFS, fs = 96 kHz,...

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32-bit, 768 kHz Sampling Stereo Audio D/A Converter BD34301EKV-10

BD34301EKV Electrical Characteristics - continued Unless otherwise specified Ta = 25 °C, AVCC = 5.0 V, DVDDIO = 3.3 V, DVDD = 1.5 V Input Signal Frequency = 1 kHz, 20-kHz AES17 LPF, Differential output (XLR) measurement DSD Mode, fDSD = 5.6448 MHz, MCLK = 45.1584 MHz, Clock 2 (06h) = 01h, DSD Filter (16h) = 01h Limit Parameter Symbol Unit Min Typ Max DSD AC Characteristics 20-kHz AES17 LPF + A-weight(Note 1) 20-kHz AES17LPF, 0 dBFS 20-kHz AES17 LPF + A-weight, -60 dBFS -∞ dBFS (No signal), Bias current single output Dynamic Range Output Center Current Peak Output Current 0 dBFS, Current amplitude...

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32-bit, 768 kHz Sampling Stereo Audio D/A Converter BD34301EKV-11

Current Segment Current Segment Master Clock Over Sampling Digital FIR Filter Figure 5. Measurement Circuit www.rohm.com © 2020 ROHM Co., Ltd. All rights reserved. TSZ22111 • 15 • 001 (Note 1) The written values of external parts are checked by sound test. Changing these values can affect the sound quality. Please check the sound when the values are changed

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