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参数资料
| 型号： | TA2149BFN |
| 元件分类： | 接收器 |
| 英文描述： | AM/FM, AUDIO SINGLE CHIP RECEIVER, PDSO24 |
| 封装： | 0.300 INCH, 0.65 MM PITCH, PLASTIC, SSOP-24 |
| 文件页数： | 15/15页 |
| 文件大小： | 261K |
| 代理商： | TA2149BFN |
TA2149BN/BFN
2001-12-21
9
4.
VCC Line
This ICs have two voltage supply terminals, VCC (for AM, FM IF, MPX stage) and RF VCC (for FM RF
stage). Set up the potential difference between VCC and RF VCC 0.4 V (typ.) or less, otherwise there is the
case that this IC doesn’t operate normally.
5.
How to control the Divider of FM OSC.
Divider of FM OSC ON/OFF switching is controlled by external pull-up resistor of pin 19.
In case of Divider of FM OSC is used, it is necessary to set up the value of R under 470
(typ.).
When R is over 470
, it is feared that Divider is not operating. (At this time, buffer output frequency is
equal to FM OSC frequency.)
Which ever Divider of FM OSC is used or not, AM OSC buffer frequency and output level is same.
Mode
SW8
Output Frequency
Output Level (Typ.)
OPEN
1/1 FM OSC
35 mVrms
FM
ON
1/16 FM OSC
110 mVrms
OPNE
AM
ON
1/1 FM OSC
75 mVrms
6.
How to adjust the IF Count Output Sensitivity
IF count output sensitivity can be adjusted by changing the value of external resistance at pin 17.
This ICs have IF signal level detector in pin 9. When DC voltage of pin 9 is high than threshold, IF count
output signal come out from the pin 17.
And this threshold is controlled by value of external resistance at pin 19.
SW8
AM
OSC
FM
OSC
buff
1/1
or
1/16
19
R
buff out
RF VCC
External resistance of pin-17
(k
)
IF
c
o
u
n
to
u
tput
vol
tage
V
IF
(F
M)
m
V
p-p
IF
co
un
t
ou
tp
u
t
s
e
ns
it
iv
it
y
IF
s
e
n
s
(F
M
)
40
0
45
50
55
65
60
0.5
1.5
2
3
3.5
1
2.5
0
50
100
150
350
200
IF sens (FM)
VIF (FM)
250
300
30
35
VCC = 3 V
f
= 10.7 MHz
f = 75 MHz
相关PDF资料 |
PDF描述 |
|---|---|
| TA2149BN | AM/FM, AUDIO SINGLE CHIP RECEIVER, PDIP24 |
| TA2149FN | AUDIO SINGLE CHIP RECEIVER, PDSO24 |
| TA2149N | AUDIO SINGLE CHIP RECEIVER, PDIP24 |
| TA2152FL | 0.008 W, 2 CHANNEL, AUDIO AMPLIFIER, PQCC24 |
| TA2152FNG | 0.008 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO24 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| TA2149BN | 制造商:TOSHIBA 制造商全称:Toshiba Semiconductor 功能描述:3 V AM/FM 1 Chip Tuner IC (for Digital Tuning System) |
| TA2149N | 制造商:Panasonic Industrial Company 功能描述:TUNER |
| TA2151FN | 制造商:TOSHIBA 制造商全称:Toshiba Semiconductor 功能描述:RF Amplifier for Digital Servo CD System |
| TA2152FLG | 制造商:TOSHIBA 制造商全称:Toshiba Semiconductor 功能描述:Low Current Consumption Headphone Amplifier (for 1.5-V/3-V Use) |
| TA2152FNG | 制造商:TOSHIBA 制造商全称:Toshiba Semiconductor 功能描述:Low Current Consumption Headphone Amplifier (for 1.5-V/3-V Use) |
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