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參數(shù)資料
| 型號： | TDA7421N |
| 廠商： | 意法半導體 |
| 英文描述： | AM/FM TUNER FOR CAR RADIO AND HI-FI APPLICATIONS |
| 中文描述： | AM / FM調(diào)諧的汽車收音機及音響應(yīng)用 |
| 文件頁數(shù)： | 1/38頁 |
| 文件大小： | 337K |
| 代理商： | TDA7421N |
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TDA7421N
August 2000
This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to change without notice.
I
HIGH PERFORMANCE FRONT-END IC FOR
AM/FM RECEIVERS
I
FULLY INTEGRATED HIGH-SPEED PLL FOR
OPTIMIZED RDS APPLICATIONS
I
FM MPX/AM AUDIO OUTPUT, 450kHz AM IF
OUTPUT FOR STEREO AM APPLICATIONS
I
AM DOUBLE CONVERSION ARCHITECTURE
I
AM/FM STATION DETECTOR AND DIGITAL
IF-COUNTER
I
SINGLE FREQUENCY REFERENCE FOR
BOTH AM AND FM
I
FULL ELECTRICAL ADJUSTMENT
I
I
2
C-BUS PROGRAMMABLE
DESCRIPTION
The TDA7421N is a high-performance tuner circuit
which integrates AM and FM sections, PLL frequency
sinthesizer and IF counter on a single chip.
Use of BICMOS technology allows the implementa-
tion of tuning functions with a minimum of external
components.Value spread of external components
can be fully compensated by means of on-chip elec-
trical adjustment controlled by external
μ
P.
The FM quality detection circuit, in conjunction with
the digital IF counter, enables the stop-station func-
tion in “seek” mode and MPX mute during reception.
The combination of programmable level detector and
IF counter allows reliable AM stop-station perfor-
mance.
The Automatic Gain Control (AGC) operates on dif-
ferent signal bandwidths in order to optimize sensitiv-
ity and dynamic range.
I
2
C-bus controls functions such as AGC, amplifier
gains, PLL and counter settings.
TQFP64
ORDERING NUMBER:
TDA7421N
PRELIMINARY DATA
AM/FM TUNER FOR CAR RADIO AND HI-FI APPLICATIONS
PIN CONNECTIONS
1
2
3
5
6
4
7
8
9
10
27
11
12
28 29 30 31 32
59 58 57 56
54
55
53 52 51 50 49
43
42
41
39
38
40
48
47
46
44
45
FM AGC OUT
FM RF AGC IN
FM MIX IN +
AM MIX1 IN +
AM MIX1 IN -
FM MIX IN -
XTAL D
OSC GND
VCO E
RF GND
VCO B
P
S
S
S
D
D
I
S
C
I
A
A
F
A
A
R
A
A
F
F
F
F
F
FM BW TC
FM MUTE DRIVE
FM SMETER AM SMETER
FM SD AM SD
FM QUAD+
FM IF AMP2 OUT
IF1 VCC
FM LIM IN +
IF1 GND
FM LIM IN -
D98AU909
22 23 24 25 26
60
M
61
M
62
A
63
A
64
A
L
L
L
L
P
17 18 19 20 21
37
36
34
33
35
FM QUAD-
IF2 VCC
AM REF
AM BPF
AM IF2 IN
13
14
15
16
PLL VCC
FM RF ADJ
FM ANT ADJ
XTAL G
OSC VCC
AUDIO OUT
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| TDA7421 | AM/FM TUNER FOR CAR RADIO AND Hi-Fi APPLICATIONS |
| TDA7427A | AM-FM RADIO FREQUENCY SYNTHESIZER AND IF COUNTER |
| TDA7427AAD | AM-FM RADIO FREQUENCY SYNTHESIZER AND IF COUNTER |
| TDA7427AAD1 | AM-FM RADIO FREQUENCY SYNTHESIZER AND IF COUNTER |
| TDA7427 | AM-FM RADIO FREQUENCY SYNTHESIZER AND IF COUNTER |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TDA7427 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:AM-FM RADIO FREQUENCY SYNTHESIZER AND IF COUNTER |
| TDA7427A | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:AM-FM RADIO FREQUENCY SYNTHESIZER AND IF COUNTER |
| TDA7427AAD | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:AM-FM RADIO FREQUENCY SYNTHESIZER AND IF COUNTER |
| TDA7427AAD1 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:AM-FM RADIO FREQUENCY SYNTHESIZER AND IF COUNTER |
| TDA7427AD1 | 功能描述:音頻 DSP AM/FM Radio Freq Syn 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 |
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