PS9604 Datasheet, PDF (1/6 Pages) List of Unclassifed Manufacturers – Stereo, 24-Bit, 192kHz PCM-to-PWM Converter for Full Digital Power Amplifier

PULSUS
PS9604
Stereo, 24-Bit, 192kHz PCM-to-PWM Converter
for Full Digital Power Amplifier
Features
Description
Sampling Frequency: 32kHz to 192kHz
8X Oversampling at 96kHz
4X Oversampling at 192kHz
Input Audio Data Word: 20-, 24-Bit
130 dB Dynamic Range
120 dB SNR (typical)
Variable Modulation Index: 0.5 to 0.875
PWM Switching Frequency: 256~384kHz
Variable PWM Mapping Method: Both Class
AD, BD amplifications are supported
Automatic Sample Rate Detection
System Clock:
2048fs at 48kHz, 1024fs at 96kHz,
512fs at 192kHz
Single 3.3 V Power Supply
28-Lead SOIC Package
The PS9604 is a high performance, stereo, 24-bit,
192kHz PCM-to-PWM converter IC.
The PS9604 uses a state-of-the-art digital signal-
processing algorithm to convert input PCM signal to
PWM format without sacrificing the quality of audio
signal.
The PS9604 can be used with various 8X
oversampling digital filters, for example, DF1704,
SM5847, and PMD200. It can be set up to use
different modulation indices and PWM mapping
methods.
The PS9604’s excellent SNR and ultra-low
distortion makes it suitable for a size-sensitive
consumer power amplifier application where high
performance is required, such as high-quality AV
receiver, digital TV, and hi-fi amplifiers. A high-end
quality full-digital amplifier can be built using the
PS9604, with minimal cost.
Application Block Diagram
MOD-INDEX [1:0]
24/20BIT
NS_MODE
MUTE PWM_MAP [1:0]
BCLK
WCLK
LDATA
RDATA
REF_CLK
FS_CLK
192K
96K
SF1
SF0
Serial
Input
Interface
Multi-bit
Delta-Sigma
Modulator
PWM
Modulator
PWM
Modulator
Sample
Rate
Detector
Timing
Generator
Power Supply
PWM_L+
PWM_L-
PWM_R+
PWM_R-
RESET SYSCLK
V_SS
V_DD
Copyright © Pulsus Technologies Inc. 2000
1
H Bridge
Gate
Driver
Gate
Driver
AUGUST 2000 REV0.4