전자부품 데이터시트 검색엔진
Selected language     Korean  ▼
부품명
         상세내용
Preview PDF Download HTML-1page HTML-10pages

TDA1305 데이터시트(Datasheet) 8 Page - NXP Semiconductors

부품명 TDA1305
상세내용  Stereo 1fs data input up-sampling filter with bitstream continuous dual DAC BCC-DAC2
PDF  20 Pages
Scroll/Zoom Zoom In 100% Zoom Out
제조사  PHILIPS [NXP Semiconductors]
홈페이지  http://www.nxp.com
Logo 

 8 page
background image
1995 Dec 08
8
Philips Semiconductors
Preliminary specification
Stereo 1fs data input up-sampling filter with
bitstream continuous dual DAC (BCC-DAC2)
TDA1305T
Mute
Soft mute is controlled by the MUSB at pin 9. When the
input is active LOW the value of the samples is decreased
smoothly to zero following a cosine curve. To step down
the value of the data 32 coefficients are used, each one
being used 31 times before stepping onto the next. When
MUTE is released (pin 19 = HIGH), the samples are
returned to the full level again following a cosine curve with
the same coefficients being used in the reverse order.
Mute is synchronized to prevent operation in the middle of
a word.
De-emphasis
A digital de-emphasis is implemented for three sample
rates (32, 44.1 and 48 kHz). By selecting DEEM1 and
DEEM2 de-emphasis can be applied by means of a FIR
filter. Time constants of the de-emphasis are 50
µs and
15
µs. De-emphasis is synchronized to prevent operation
in the middle of a word. The de-emphasis deviation from
ideal 50
µs and 15 µs de-emphasis is given in Table 4.
Table 2
De-emphasis.
Attenuation
Attenuation is controlled by the ATSB input (pin 21). When
the input is active LOW the sample is multiplied by a
coefficient that provides 12 dB attenuation. If the input is
HIGH the multiplication factor is 1. Attenuation is
synchronized to prevent operation in the middle of a word.
Double-speed mode
Double speed is controlled by the DSMB input (pin 20).
When the input is active LOW the device operates in the
double-speed mode.
DEEM1
DEEM2
CONDITION
0
0
de-emphasis disabled
0
1
de-emphasis for fs = 32 kHz
1
0
de-emphasis for fs = 4.1 kHz
1
1
de-emphasis for fs = 48 kHz
Oversampling filter (normal-speed mode)
In the normal-speed mode the oversampling filter
consists of:
• A 91st order half-band low-pass FIR filter which
increases the oversampling rate from 1 time to 2 times.
• A 23rd order quarter band low-pass FIR filter which
increases the oversampling rate from 2 times to 8 times.
• A linear interpolation section which increases the
oversampling rate to 16 times. This removes the
spectral components around 8fs.
• A sample-and-hold section which provides another
6 times oversampling to 96 times. The zero-order hold
characteristic of this sample-and-hold section plus the
1st order analog filtering remove the spectral
components around 16fs.
Pass-band ripple and stop-band attenuation for
normal-speed are given in Table 3.
Oversampling filter (double-speed mode)
In the double-speed mode the oversampling filter
consists of:
• A 51st order half-band low-pass FIR filter which
increases the oversampling rate from 1 time to 2 times.
• A 7th order half-band low-pass FIR filter which
increases the oversampling rate from 2 times to 4 times.
• A linear interpolation section which increases the
oversampling rate to 8 times. This removes the spectral
components around 4fs.
• A sample-and-hold section which provides another
6 times oversampling to 48 times. The zero-order hold
characteristic of this sample-and-hold section plus the
1st order analog filtering remove the spectral
components around 8fs.
Pass-band ripple and stop-band attenuation for
double-speed are given in Table 3.




Html 페이지

1  2  3  4  5  6  7  8  9  10  11  12  13  14  15  16  17  18  19  20 


데이터시트



관련 부품명

부품명상세내용Html View제조사
TDA1549TStereo 4fs data input up-sampling filter with bitstream continuous calibration DAC BCC-DAC1 1 2 3 4 5 MoreNXP Semiconductors
WM2626Low Power Dual 8-bit Serial Input DAC with Internal Reference 1 2 3 4 5 MoreWolfson Microelectronics plc
PCM301024-BIT STEREO AUDIO CODEC WITH 96-kHz ADC 192-kHz DAC AND SINGLE-ENDED ANALOG INPUT/OUTPUT 1 2 3 4 5 MoreTI store
TDA1546TBitstream Continuous Calibration DAC with digital sound processing BCC-DAC 1 2 3 4 5 MoreNXP Semiconductors
WM2637Dual 10-Bit Serial Input Voltage Output DAC with Internal Reference 1 2 3 4 5 MoreWolfson Microelectronics plc
WM2638Dual 12-Bit Serial Input Voltage Output DAC with Internal reference 1 2 3 4 5 MoreWolfson Microelectronics plc
ICE1PCS02Standalone Power Factor Correction PFC Controller in Continuous Conduction Mode CCM with Input Brown-Out Protection 1 2 3 4 5 MoreInfineon Technologies AG
CS43L43Low Voltage Stereo DAC With Headphone Amp 1 2 3 4 5 MoreCirrus Logic
TLV320DAC26LOW POWER STEREO AUDIO DAC WITH HEADPHONE/SPEAKER AMPLIFIER 1 2 3 4 5 MoreBurr-Brown (TI)
SN54ALS253DUAL 1-OF-4 DATA SELECTORS/MULTIPLEXERS WITH 3-STATE OUTPUTS 1 2 3 4 5 MoreTI store

링크 URL

ALLDATASHEET 가 귀하에 도움이 되셨나요?  [ DONATE ]  

Alldatasheet는?   |   광고문의    |   운영자에게 연락하기   |   개인정보취급방침   |   즐겨찾기   |   링크교환   |   제조사별 검색
All Rights Reserved© Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  , Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp  |   Russian : Alldatasheetru.com
Korean : Alldatasheet.co.kr   |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com  |   Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl