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參數(shù)資料
| 型號： | AD1953YST |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 消費家電 |
| 英文描述： | 16-bit fixed point DSP with Flash |
| 中文描述： | SPECIALTY CONSUMER CIRCUIT, PQFP48 |
| 封裝： | PLASTIC, MS-026BBC, LQFP-48 |
| 文件頁數(shù)： | 12/36頁 |
| 文件大?。?/td> | 750K |
| 代理商： | AD1953YST |
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REV. 0
AD1953
–12–
quality of compressed audio. In addition, the main channels
have a stereo widening algorithm that increases the perceived
spread of the stereo image.
Most of the signal processing functions are coded using full 48-bit
double-precision arithmetic. The input word length is 24 bits,
with two extra headroom bits added in the processor to allow
internal gains up to 12 dB without clipping (additional gains can
be accommodated by scaling down the input signal in the first
biquad filter section).
A graphical user interface (GUI) is available for evaluation of
the AD1953 (Figure 3). This GUI controls all of the functions
of the chip in a very straightforward and user-friendly interface.
No code needs to be written to use the GUI to control the chip.
For more information on AD1953 software tools, send an email to
SigmaDSP@analog.com.
SIGNAL PROCESSING
Signal Processing Overview
Figure 2 shows the signal processing flow diagram of the AD1953.
The AD1953 is designed to provide all common signal-processing
functions commonly used in 2.0 or 2.1 playback systems. A
7-biquad equalizer operates on the stereo input signal. The
output of this equalizer is fed to a 2-biquad crossover filter for
the main channels, and the mono sum of the left and right equalizer
outputs is fed to a 3-biquad crossover filter for the Sub channel.
Each of the three channels has independent delay compensa-
tion. There are two high quality compressor/limiters available:
one operating on the left/right outputs and one operating on the
subwoofer channel. The subwoofer output may be blended back
into the left/right outputs for 2.0 playback systems. In this
configuration, the two independent compressor/limiters provide
2-band compression, which significantly improves the sound
HPF/
DE-EMPHASIS
IN
RIGHT
IN
LEFT
V
V
P
DELAY
(0ms–3.7ms)
DELAY
(0ms–3.7ms)
DELAY
(0ms–2.3ms)
8
INTERPOLATION
DAC
OUT
LEFT
8
INTERPOLATION
DAC
OUT
RIGHT
V
1 BIQUAD
FILTER
DELAY
(0ms–3.7ms)
MONO DAC
L/R REINJECTION
LEVEL
SUBWOOFER
OUTPUT
SUB DYNAMICS PROCESSOR
SUB CHANNEL
L/R MIX
EQ AND CROSSOVER FILTERS
L/R DYNAMICS PROCESSOR
LEVEL DETECT,
LOOK-UP TABLE
LEVEL DETECT,
LOOK-UP TABLE
7 BIQUAD
FILTERS
7 BIQUAD
FILTERS
CROSSOVER
(2 FILTERS)
CROSSOVER
(2 FILTERS)
CROSSOVER
(3 FILTERS)
DELAY
(0ms–2.3ms)
HPF/
DE-EMPHASIS
Figure 2. Signal Processing Flow
Figure 3. Graphical User Interface
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AD1953YSTRL | 16-bit fixed point DSP with Flash |
| AD1953YSTRL7 | 16-bit fixed point DSP with Flash |
| AD1954 | CONNECTOR COAXIAL BNC |
| AD1954YS | RESISTOR |
| AD1954YSRL | 16-bit fixed point DSP with Flash |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AD1953YSTRL | 制造商:Analog Devices 功能描述:DAC 3-CH Delta-Sigma 24-bit 48-Pin LQFP T/R |
| AD1953YSTRL7 | 制造商:Analog Devices 功能描述:DAC 3-CH Delta-Sigma 24-bit 48-Pin LQFP T/R 制造商:Rochester Electronics LLC 功能描述:3 CHANNEL 24 BIT SIGNAL-PROCESSING DAC - Tape and Reel |
| AD1953YSTZ | 功能描述:IC DSP DAC AUDIO3CH/26BIT 48LQFP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 數(shù)模轉(zhuǎn)換器 系列:SigmaDSP® 產(chǎn)品培訓(xùn)模塊:Data Converter Fundamentals DAC Architectures 標(biāo)準(zhǔn)包裝:750 系列:- 設(shè)置時間:7µs 位數(shù):16 數(shù)據(jù)接口:并聯(lián) 轉(zhuǎn)換器數(shù)目:1 電壓電源:雙 ± 功率耗散（最大）:100mW 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:28-LCC（J 形引線） 供應(yīng)商設(shè)備封裝:28-PLCC（11.51x11.51） 包裝:帶卷 (TR) 輸出數(shù)目和類型:1 電壓，單極；1 電壓，雙極 采樣率（每秒）:143k |
| AD1953YSTZRL | 功能描述:IC DSP DAC AUDIO3CH/26BIT 48LQFP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 數(shù)模轉(zhuǎn)換器 系列:SigmaDSP® 標(biāo)準(zhǔn)包裝:47 系列:- 設(shè)置時間:2µs 位數(shù):14 數(shù)據(jù)接口:并聯(lián) 轉(zhuǎn)換器數(shù)目:1 電壓電源:單電源 功率耗散（最大）:55µW 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:28-SSOP（0.209"，5.30mm 寬） 供應(yīng)商設(shè)備封裝:28-SSOP 包裝:管件 輸出數(shù)目和類型:1 電流，單極；1 電流，雙極 采樣率（每秒）:* |
| AD1953YSTZRL7 | 功能描述:IC DSP AUDIO 3CHAN 26BIT 48LQFP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 數(shù)模轉(zhuǎn)換器 系列:SigmaDSP® 標(biāo)準(zhǔn)包裝:47 系列:- 設(shè)置時間:2µs 位數(shù):14 數(shù)據(jù)接口:并聯(lián) 轉(zhuǎn)換器數(shù)目:1 電壓電源:單電源 功率耗散（最大）:55µW 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:28-SSOP（0.209"，5.30mm 寬） 供應(yīng)商設(shè)備封裝:28-SSOP 包裝:管件 輸出數(shù)目和類型:1 電流，單極；1 電流，雙極 采樣率（每秒）:* |
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