Rohm BD34302EKV User Manual

32-bit, 1536 kHz Sampling Stereo Audio D/A Converter
BD34302EKV Evaluation Board (Hardware)
(BD34302EKV-EVK-001)
IC Introduction
BD34302EKV is a D/A converter for high-quality audio that incorporates ROHM's unique sound quality design technology. The
newly developed DWA improves THD performance and provides higher resolution and more natural sound quality with HD (High
Definition) monaural mode. In addition, an automatic mode switching function makes it possible to easily switch between
PCM/DSD and different sampling frequencies.
BD34302EKV Block Diagram
12
BCLK/DSDCLK
13
LRCLK/DSD2
14
DIN/DSD1
DIN2 16
MCLK 60
Recommended Operating Conditions
Item
Power Supply Voltage
Operating Temperature
*1 Applicable to AVCC, AVCC_L, and AVCC_R in BD34302EKV block diagram
© 2024 ROHM Co.、Ltd.
64 2 7 9 17
PCM
I/F
Audio
Function
Control
DSD
I/F
Master 2-wire
Clock
8 10 18 19 20 21 3 4
Symbol Scope
AVCC*1 4.5 to 5.5
DVDDIO 3.0 to 3.6
DVDD 1.4 to 1.6
Topr -40 to +85
15 11 63 59 61 50
44～47
Over
Sampling
ΔΣ
Digital
Modulator
FIR
Filter
DWA
System
I/F Control
5 6 1 34 ～ 37 31
Package
Unit
HTQFP64BV (64 pin, 0.5 mm pitch)
V
W(Typ)
°C
12.0 mm x 12.0 mm x 1.00 mm
1/17
User's Guide
48 53 55 58 56
51
IOUT_LP
Current
Segment
52
IOUT_LN
42
AVCC
43
VREF_L
41
EXT_RES_L
VREF
40
EXT_RES_R
38
VREF_R
39
AGND
30 IOUT_RP
Current
Segment
29 IOUT_RN
33 28 26 23 25
D(Typ) H(Max)
No. 67UG048E Rev.003
FEB.2025