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參數(shù)資料
| 型號： | SAA8200HL |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 消費(fèi)家電 |
| 英文描述： | Ensation Base integrated wireless audio baseband |
| 中文描述： | SPECIALTY CONSUMER CIRCUIT, PQFP100 |
| 封裝： | 14 X 14 MM, 1.40 MM HEIGHT, PLASTIC, MS-026, SOT-407-1, LQFP-100 |
| 文件頁數(shù)： | 40/71頁 |
| 文件大?。?/td> | 298K |
| 代理商： | SAA8200HL |
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SAA8200HL_2
Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Preliminary data sheet
Rev. 02 — 17 October 2005
40 of 71
Philips Semiconductors
SAA8200HL
Ensation Base integrated wireless audio baseband
7.20 Audio output
7.20.1
SDAC
The Stereo Digital-to-Analog Converter (SDAC) is a module with interpolation filters and
noise shaper for low frequency applications such as audio and TV-audio. In this section
the analog and digital part is described. The digital part consists of an interpolation filter
that increases the sample rate from 1f
s
to 128f
s
and a third order noise shaper that runs
on 128f
s
or 256f
s
.
The inputs to the SDAC are two 24-bit parallel input words, left and right, and a
synchronization signal (DIN_VALID) at f
s
(f
s
, the sample rate, is typically 44.1 kHz). The
output is a stereo analog signal (VOUT_LINEL and VOUT_LINER).
7.20.1.1
Features of the SDAC
24-bit data path with 16-bit coefficients
Full FIR filter implementation for all of the upsampling filter
Digital dB-linear volume control in 0.25 dB steps
Digital de-emphasis for 32 kHz, 44.1 kHz, 48 kHz and 96 kHz
Selection for the 2f
s
to 8f
s
upsampling filter characteristics (sharp/slow-roll-off)
Support for 2f
s
and 8f
s
input signals:
–
1f
s
with full feature support, being de-emphasis, master volume control and soft
mute
–
2f
s
input with master volume and mute support: required for double speed mode
–
8f
s
input no features supported. This is intended for DSD support (grabbing data at
8f
s
from an external DSD unit)
Soft mute with a raised cosine function
Controlled power-down sequence comprising a raised cosine mute function followed
by a DC ramp down to zero to avoid audible plops or clicks
Integrated digital silence detection for left and right with selectable silence detection
time
Polarity control
Table 21:
AGC_TIME2
AGC time constant settings
AGC_TIME1
AGC_TIME0
AGC setting
44.1 kHz sampling
Attack time (ms)
11
16
11
16
21
11
16
21
8 kHz sampling
Attack time (ms)
61
88.2
61
88.2
116
61
88.2
116
Decay time (ms)
100
100
200
200
200
400
400
400
Decay time (ms)
551
551
1102
1102
1102
2205
2205
2205
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
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| SAA8200HL/N100,518 | 制造商:ST-Ericsson 功能描述:SAA8200HL Series Ensation Base Integrated Wireless Audio Baseband - LQFP-100 |
| SAA8510EV1UM | 制造商:STMicroelectronics 功能描述: |
| SA-A870-FREQ | 制造商:NEL 制造商全稱:Nel Frequency Controls,inc 功能描述:Positive ECL (PECL) |
| SA-A871-FREQ | 制造商:NEL 制造商全稱:Nel Frequency Controls,inc 功能描述:Positive ECL (PECL) |
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