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參數資料
| 型號： | TEA6880H |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 消費家電 |
| 英文描述： | Up-level Car radio Analog Signal Processor CASP |
| 中文描述： | SPECIALTY CONSUMER CIRCUIT, PQFP64 |
| 封裝： | 14 X 20 MM, 2.80 MM HEIGHT, PLASTIC, SOT-319-2, QFP-64 |
| 文件頁數： | 11/88頁 |
| 文件大?。?/td> | 328K |
| 代理商： | TEA6880H |
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2000 May 08
11
Philips Semiconductors
Product specification
Up-level Car radio Analog Signal
Processor (CASP)
TEA6880H
For the time of fast RDS updating soft mute, SNC and
HCC can be put on hold and the AM wideband peak
detector and the ultrasonic noise peak detector are put on
reset by a switch signal delivered from the TEA6840H via
pin 51 (FMHOLD).
The six separate detecting circuits are:
1.
The AM wideband noise peak detector is driven from
a 20 kHz band-pass filter connected to the level buffer
output. The time constant is defined by an external
capacitor at pin 45 (TWBAM2). The output voltage of
the detector is analog-to-digital converted by 3-bit.
2.
The AM wideband noise average detector is driven
from a 20 kHz band-pass filter connected to the level
buffer output. The time constant is defined by an
external capacitor at pin 63 (TWBAM1). The output of
the detector is connected to the Stereo Noise Control
(SNC) circuit.
3.
The ultrasonic noise peak detector is driven from a
60 kHz high-pass filter connected to the MPX signal
from pin 55 (MPXRDS). The time constant is defined
byanexternalcapacitoratpin 46(TUSN2).Theoutput
voltage of the detector is analog-to-digital converted
by 3-bit.
4.
The ultrasonic noise average detector is driven from a
60 kHz high-pass filter connected to the MPX signal
from pin 55 (MPXRDS). The time constant is defined
byanexternalcapacitoratpin 64(TUSN1).Theoutput
of the detector is connected to soft mute control and
stereo noise control circuits.
5.
For soft mute and high cut control purposes an
average detector with externally defined time constant
(TMUTE, pin 54) is provided. The detector is driven by
level output only. Soft mute as well as high cut control
can be switched off by the I
2
C-bus.
6.
The stereo noise control peak detector with externally
defined time constant (TSNC, pin 56) is driven by
DC level output, AM wideband and ultrasonic noise
outputs. It provides the stereo blend facility (SNC).
Starting point and slope of stereo blend can be chosen
by the I
2
C-bus controlled reference voltage.
7.5
Tone/volume control
The tone/volume control part consists of the following
functions:
Source selector
Loudness
Volume 1
Treble
Bass
Volume 2
Rear Seat Audio (RSA) selector
Chime adder
Analog step interpolation
Audio blend control.
The stages loudness, volume 1, bass, and volume 2
include the Analog Step Interpolation (ASI) function. This
minimizes pops by smoothing out the transitions in the
audio signal during switching. The transition time is
I
2
C-bus programmable in a range of 1 : 24 in four steps.
The stages loudness, volume 1, and volume 2 also have
the Audio Blend Control (ABC) function. This minimizes
pops by automatically incrementing the volume and
loudnesscontrolsthrougheachstepbetweentheirpresent
settings and the new settings. The speed of the ABC
function is correlated with the transition time of the ASI
function.
All stages are controlled via the I
2
C-bus.
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相關代理商/技術參數 |
參數描述 |
|---|---|
| TEA6880H/V2 | 功能描述:音頻 DSP AUDIO POWER MISC RoHS:否 制造商:Texas Instruments 工作電源電壓: 電源電流: 工作溫度范圍: 安裝風格: 封裝 / 箱體: 封裝:Tube |
| TEA6880H/V2,518 | 功能描述:音頻 DSP AUDIO POWER RoHS:否 制造商:Texas Instruments 工作電源電壓: 電源電流: 工作溫度范圍: 安裝風格: 封裝 / 箱體: 封裝:Tube |
| TEA6880H/V2,557 | 功能描述:音頻 DSP AUDIO POWER MISC RoHS:否 制造商:Texas Instruments 工作電源電壓: 電源電流: 工作溫度范圍: 安裝風格: 封裝 / 箱體: 封裝:Tube |
| TEA6880HBA-T | 功能描述:音頻 DSP AUDIO POWER RoHS:否 制造商:Texas Instruments 工作電源電壓: 電源電流: 工作溫度范圍: 安裝風格: 封裝 / 箱體: 封裝:Tube |
| TEA6886 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Up-level Car radio Analog Signal Processor CASP |
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