參數(shù)資料
型號(hào): TDA3825
廠商: NXP SEMICONDUCTORS
元件分類: 接收器
英文描述: 50 AMP LATCHING POWER RELAY
中文描述: FM, AUDIO DEMODULATOR, PDIP14
文件頁(yè)數(shù): 2/18頁(yè)
文件大?。?/td> 166K
代理商: TDA3825
January 1993
2
Philips Semiconductors
Objective specification
Quasi split-sound circuit and AM
demodulator
TDA3845; TDA3845T
FEATURES
Power supply from 5 V (200 mW) to 8 V source also an
alternative 12 V source (12 V not for TDA3845T)
Gain controlled wideband IF amplifier (AC coupled with
three stages)
High precision internal 90
°
phase shifter for quadrature
demodulator
Amplitude detector for gain control which operates as a
peak detector for FM sound and as a mean level
detector for AM sound (switchable)
In-phase wideband synchronous demodulator for AM
detection
Stabilizer circuit for ripple rejection and constant output
signals
ESD protection for all pins
Suitable for all FM standards and L as well as L-accent
standard
NICAM compatible.
GENERAL DESCRIPTION
The TDA3845 is a quasi split-sound IF circuit which is
designed to provide high performance television FM/AM
sound.
QUICK REFERENCE DATA
ORDERING INFORMATION
Note
1.
2.
SOT38-1; 1996 November 28.
SOT109-1; 1996 November 28.
SYMBOL
PARAMETER
MIN.
TYP.
MAX.
UNIT
positive supply voltage
pin 14
pin 11 (not for TDA3845T)
supply current
minimum IF input voltage (RMS value)
IF control range
intercarrier output voltage 5.5 MHz (RMS value)
signal-to-weighted-noise ratio
(relative to 1 kHz; 50 kHz deviation)
at 5.5 MHz for 2T/20T
at 5.742 MHz for 2T/20T
AF output voltage AM (RMS value)
signal-to-weighted-noise ratio; AM mode
total harmonic distortion; AM mode
operating ambient temperature
V
P1
V
P2
I
P
V
1-16(RMS)
4.5
10.8
60
70
5.0
12.0
40
70
63
100
8.8
13.2
100
V
V
mA
μ
V
dB
mV
V
12-13(RMS)
(S +W)/W
440
0
60
58
550
56
1
660
2
+70
dB
dB
mV
dB
%
°
C
V
6-13(RMS)
(S +W)/W
THD
T
amb
EXTENDED
TYPE NUMBER
PACKAGE
PINS
PIN POSITION
MATERIAL
CODE
SOT38
(1)
SOT109A
(2)
TDA3845
TDA3845T
16
16
DIL
SO16
plastic
plastic
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