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參數(shù)資料
| 型號： | T4258NFN |
| 廠商： | ATMEL CORP |
| 元件分類： | 接收器 |
| 英文描述： | AM/FM, AUDIO SINGLE CHIP RECEIVER, PDSO44 |
| 封裝： | SSOP-44 |
| 文件頁數(shù)： | 20/38頁 |
| 文件大?。?/td> | 443K |
| 代理商： | T4258NFN |
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27
T4258N
4566B–AUDR–02/04
13.2
Total harmonic
distortion
Modulation depth =
80%, f
mod = 1 kHz
V(pin 35) = const.
11
THD
AM
0.6
2
%
A
13.3
Maximum
signal-to-noise ratio
Modulation depth =
30%, f
mod = 1 kHz
74 dBV at pin 41
11
(S/N)
AM
54
dB
C
14
MPX Output
14.1
DC output voltage
Bit 7 = 1
11
2.1
2.3
2.5
V
A
14.2
Mute gain
Bit 7 = 1,
FM dev. = ±75 kHz,
f
mod =1 kHz
11
-65
-50
dB
A
14.3
Output resistance
Small signal
11
60
D
15
Search Stop Detector, INT Output
15.1
LOW saturation
voltage
21
0
0.5
V
A
15.2
LOW output
resistance
21
0.3
k
D
15.3
HIGH saturation
voltage
21
4.5
4.8
5.25
V
A
15.4
HIGH output
resistance
21
1
k
D
16
Deviation Sensor, FM Mode (Bit 92 = 1, Bit 93 = 0)
16.1
Offset voltage
FM dev. = ±0 kHz
FM demodulator
adjusted
31
0.2
V
C
16.2
Output voltage
FM dev. = ±75 kHz,
f
mod =1 kHz
31
1.7
2.0
2.5
V
C
17
Field Strength Sensor, FM Mode (Bit 92 = 1, Bit 93 = 0, Bit 89 to 91 = 0, Bit 80 = 0, Bit 18 to 21 = 0)
17.1
Output voltage
60 dBV at pin 33
9
0.8
1.3
1.8
V
A
17.2
Output voltage
Unmodulated signal
100 dBV at pin 33
92.8
3.4
3.9
V
A
Field Strength Sensor, AM Mode (Bit 92 = 0, Bit 93 = 1, Bit 80 = 1, Bit 18 to 21 = 0)
17.3
Output voltage LOW
field strength
60 dBV at pin 28
9
1.5
1.8
2.1
V
A
17.4
Output voltage HIGH
field strength
94 dBV at pin 28
9
3.0
3.3
3.6
V
A
18
Multipath Sensor, FM Mode (Bit 92 = 1, Bit 93 = 0)
18.1
Offset voltage
Unmodulated signal,
60 dBV at pin 1
40
0
200
mV
A
18.2
Output voltage
AM modulation depth
= 60%,
f
mod = 20 kHz,
60 dBV at pin 1
40
1.5
1.9
2.4
V
A
Electrical Characteristics (Continued)
Test conditions (unless otherwise specified): VS = 8.5 V, Tamb = 25°C
No.
Parameters
Test Conditions
Pin
Symbol
Min.
Typ.
Max.
Unit
Type*
*) Type means: A =100% tested, B = 100% correlation tested, C = Characterized on samples, D = Design parameter
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