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參數資料
| 型號： | TDA7438 |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 音頻控制 |
| 英文描述： | 2 CHANNEL(S), TONE CONTROL CIRCUIT, PDIP28 |
| 封裝： | DIP-28 |
| 文件頁數： | 1/19頁 |
| 文件大?。?/td> | 215K |
| 代理商： | TDA7438 |
1/19
TDA7438
June 2004
1
FEATURES
■
INPUT MULTIPLEXER
– 3 STEREO INPUTS
– SELECTABLE INPUT GAIN FOR OPTIMAL
ADAPTATION TO DIFFERENT SOURCES
■
ONE STEREO OUTPUT
■
TREBLE, MIDDLE AND BASS CONTROL IN
2.0dB STEPS
■
VOLUME CONTROL IN 1.0dB STEPS
■
TWO SPEAKER ATTENUATORS:
– TWO INDEPENDENT SPEAKER CONTROL
IN 1.0dB STEPS FOR BALANCE FACILITY
– -INDEPENDENT MUTE FUNCTION
■
ALL FUNCTION ARE PROGRAMMABLE VIA
SERIAL BUS
2
DESCRIPTION
The TDA7438 is a volume tone (bass, middle and
treble) balance (Left/Right) processor for quality
audio applications in car-radio and Hi-Fi systems.
Selectable input gain is provided. Control of all the
functions is accomplished by serial bus.
The AC signal setting is obtained by resistor net-
works and switches combined with operational
amplifiers.
Thanks to the used BIPOLAR/CMOS Technology,
Low Distortion, Low Noise and DC stepping are
obtained.
THREE BANDS
DIGITALLY CONTROLLED AUDIO PROCESSOR
Figure 2. Block Diagram
0/30dB
2dB STEP
MUXOUTL
INL
VOLUME
TREBLE
TREBLE(L)
MIDDLE
MUXOUTR
INR
TREBLE(R)
BOUT(L)
SPKR ATT
LEFT
LOUT
SCL
SDA
DIG_GND
ROUT
D96AU488A
I
2CBUS DECODER + LATCHES
100K
G
L-IN1
L-IN2
L-IN3
100K
R-IN1
R-IN2
R-IN3
G
INPUT MULTIPLEXER
+ GAIN
MOUT(L)
BASS
BIN(L)
BASS
SPKR ATT
RIGHT
MIN(R) MOUT(R)
BOUT(R)
BIN(R)
SUPPLY
CREF
AGND
VS
MIN(L)
27
3
4
5
2
1
28
21
22
20
26
24
25
8
9
19
10
11
12
13
23
6
7
18
17
16
14
15
RM
RB
RM
RB
VREF
REV. 7
Figure 1. Package
Table 1. Order Codes
Part Number
Package
TDA7438
DIP28
TDA7438D
SO28
TDA7438D013TR
Tape & Reel
SO28
DIP28
Obsolete
Product(s)
- Obsolete
Product(s)
相關PDF資料 |
PDF描述 |
|---|---|
| TDA7438D | 2 CHANNEL(S), TONE CONTROL CIRCUIT, PDSO28 |
| TDA7438D013TR | 2 CHANNEL(S), TONE CONTROL CIRCUIT, PDSO28 |
| TDA7439D | 2 CHANNEL(S), TONE CONTROL CIRCUIT, PDSO28 |
| TDA7439B | 2 CHANNEL(S), TONE CONTROL CIRCUIT, PDIP28 |
| TDA7439 | 2 CHANNEL(S), TONE CONTROL CIRCUIT, PDIP30 |
相關代理商/技術參數 |
參數描述 |
|---|---|
| TDA7438_04 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:THREE BANDS DIGITALLY CONTROLLED AUDIO PROCESSOR |
| TDA7438D | 功能描述:音頻 DSP 3-Band Digital Cont 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 |
| TDA7438D013TR | 功能描述:音頻 DSP 3-Band Digital Cont 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 |
| TDA7439 | 功能描述:音頻 DSP 3-Band Digital Cont 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 |
| TDA7439_08 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Three-band digitally-controlled audio processor |
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