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參數(shù)資料
| 型號(hào)： | TEA5570 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 接收器 |
| 英文描述： | RF/IF circuit for AM/FM radio |
| 中文描述： | AM/FM, AUDIO SINGLE CHIP RECEIVER, PDIP16 |
| 封裝： | 0.300 INCH, PLASTIC, MO-001AE, SOT-38-1, DIP-16 |
| 文件頁數(shù)： | 7/19頁 |
| 文件大?。?/td> | 180K |
| 代理商： | TEA5570 |
September 1987
7
Philips Semiconductors
Product specification
RF/IF circuit for AM/FM radio
TEA5570
Notes to the characteristics
1.
Oscillator operates at V
7-16
> 2,25 V.
2.
I.F. suppression is defined as the ratio
α
= 20 log
input voltage at f = 1 MHz.
3.
Oscillator voltage at pin 8 can be preset by R
osc
(see Fig.10).
where: V
i1
is the input voltage at f = 455 kHz and V
i2
is the
4.
Maximum current into pin 5 can be adjusted by R1 (see Fig.10); I
5
=
I
3
when V
3-16
= 800 mv; I
3
= 400
μ
A.
5.
AM suppression is measured with f
m
= 1 kHz, m = 0,3 for AM; f
m
= 400 Hz,
f =
±
22,5 kHz for FM.
Facility adaptation
Facility adaptation is achieved as follows (see Fig.10):
Indicator/level detector
(pin 12)
Indicator current
D.C. output voltage
at V
i
= 300
μ
V
at V
i
=
2 mV
AM to FM switch
I
12
250
325
μ
A
V
12-16
V
12-16
0,25
1,0
V
V
Switching current at V
3-16
< 1 V
I
3
400
μ
A
FACILITY
COMPONENT
FM sensitivity
R1 fixes the current at pin 5 (I
5
=
400
μ
A)
(gain adjustable
±
10 dB; see note 4)
R11 and coil tapping
R
osc
R7, R11
R7
AM sensitivity
AM oscillator biasing
AM output voltage
AM a.g.c. setting
PARAMETER
SYMBOL
MIN.
TYP.
MAX.
UNIT
V
i1
V
i2
-------
V
---------------
R1
V
---------------
R1
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