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參數資料
| 型號： | PS9604 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | Stereo, 24-Bit, 192kHz PCM-to-PWM Converter for Full Digital Power Amplifier |
| 中文描述： | 立體聲，24位192kHz的PCM的全數字功放到PWM變換器 |
| 文件頁數： | 1/6頁 |
| 文件大?。?/td> | 241K |
| 代理商： | PS9604 |
PULSUS
PS9604
Copyright Pulsus Technologies Inc. 2000
1
AUGUST 2000 REV0.4
Rate
Detector
SF1
SF0
192K
PREIMNARY
Stereo, 24-Bit, 192kHz PCM-to-PWM Converter
for Full Digital Power Amplifier
Application Block Diagram
Features
z
Sampling Frequency: 32kHz to 192kHz
z
8X Oversampling at 96kHz
z
4X Oversampling at 192kHz
z
Input Audio Data Word: 20-, 24-Bit
z
130 dB Dynamic Range
z
120 dB SNR (typical)
z
Variable Modulation Index: 0.5 to 0.875
z
PWM Switching Frequency: 256~384kHz
z
Variable PWM Mapping Method: Both Class
AD, BD amplifications are supported
z
Automatic Sample Rate Detection
z
System Clock:
2048fs at 48kHz, 1024fs at 96kHz,
512fs at 192kHz
z
Single 3.3 V Power Supply
z
28-Lead SOIC Package
Description
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.
Serial
Input
Interface
Multi-bit
Delta-Sigma
Modulator
PWM
Modulator
Power Supply
V
SS
BCLK
WCLK
LDATA
RDATA
REF_CLK
FS_CLK
96K
PWM
Modulator
V
DD
MOD-INDEX [1:0]
PWM_MAP [1:0]
SYSCLK
PWM_R-
PWM_R+
PWM_L-
PWM_L+
Gate
Driver
Gate
Driver
H Bridge
NS_MODE
MUTE
Timing
Generator
24/20BIT
RESET
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