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U4488B PDF 데이터시트 : 부품 기능 및 핀배열

부품번호 U4488B
기능 Quasi-Split Sound Circuit and AM Demodulator
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U4488B 데이터시트, 핀배열, 회로
U4488B
Quasi-Split Sound Circuit and AM Demodulator
Description
The U4488B is an integrated bipolar circuit for full multi-
standard sound IF signal processing in TV/VTR and
Multimedia applications. It supplies AM signals as well
as FM/NICAM sound IF signals and thus allows the de-
sign of a universal sound IF module for various
applications. The U4488B has the same performance like
the U4468B, with the additional feature of a second sym-
metrical IF input.
Features
D 5-V supply voltage; low power consumption
D Gain-controlled 3-stage wideband IF amplifier
D Active carrier generation by FPLL principle
(frequency-phase-locked-loop) for true quadrature
demodulation
Block Diagram
D Complete alignment-free AM demodulator
D Switchable amplitude detector for gain control, which
operates as a peak detector for FM sound and as a
mean level detector for AM sound
D Two symmetrical IF inputs
IFFM
IFAM
IF1/IF2
S3
11
1
2
VS
4 14
REF
IF-Amp
15 IF-Switch
16
Loop
filter
FPLL
5
0° VCO
90°
8
9
VCO
12
Intercarrier
(FM)
Mean
3
AGC
13
Ordering Information
Extended Type Number
U4488B
6
Peak
level
7
IF AGC
Mean/peak
S1
AM-Det
10
Mute S2
Figure 1. Block diagram
AF(AM)
13789
Package
DIP16
Remarks
TELEFUNKEN Semiconductors
Rev. A2, 15-Jan-98
Preliminary Information
1 (9)




U4488B pdf, 반도체, 판매, 대치품
U4488B
Electrical Characteristics
VS = + 5 V, Tamb = + 25°C; reference point Pin 13, unless otherwise specified
Parameters
Test Conditions / Pins Symbol Min. Typ. Max. Unit
DC-supply
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁSupply voltage
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁSupply current
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁIF-input
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁMinimum IF input signal
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁMaximum IF input signal
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁInput impedance
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁInput capacitance
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁIF input switch
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁSwitching voltage: IF input 1
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁSwitching voltage: IF input 2
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁSwitching current
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁSIF-AGC
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁIF gain control range
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁAGC capacitor
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁFPLL and VCO
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁMax. oscillator frequency
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁVision carrier capture range
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁOscillator drift (free runing)
as function of temperature
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁStandard switch
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁSwitching voltage for mode 1:
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁFM/NICAM sound
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁSwitching voltage for mode 2:
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁAM sound
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁSwitching current
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁAM mute switch
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁSwitching voltage
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁSwitching voltage
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁSwitching current
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁNotes
(Pin 14)
VS
vin=10 mV or V3 = 2 V
IS
(Pins 1 and 2 resp. 15 and 16)
Output signal: –3 dB
Output signal: +1 dB
(See note 1)
vin
vin
Rin
(See note 1)
(Pin 11)
Cin
Inputs: Pins 1 and 2
Inputs: Pins 15 and 16
(Pin 3)
VswIF1
VswIF2
Isw
(Pins 5, 8 and 9)
Gv
CAGC
For carrier generation
fvco = 38.9 MHz
Cvco = 6.2 pF
DTamb = 55°C,
fvco = 38.9 MHz
Cvco = 6.2 pF,(see note 2)
fVCO
Dfcap
Df/DT
(Pin 7)
Peak value control
(see note 3)
Vsw1
Average level control
Vsw2
(Pin 10)
AM output active
AM output switched off
Isw
Vmute1
Vmute2
Imute
4.5 5.0
40
50
70 100
1.2
2
open
0
–50
60 65
4.7
"70
"1.5 2
2.0
0
"100
open
0
–100
9.0
1.5
–0.3
VS
1.5
1.5
V
mA
µVrms
mVrms
kW
pF
V
µA
dB
µF
MHz
MHz
%
V
V
mA
V
mA
1. This parameter is given as an application information and not tested during production
2. The oscillator drift is related to the picture carrier frequency, with external temperature compensated LC circuit
3. Without external control voltage (Pin 7 open), the IC automatically operates in mode 1
4 (9) TELEFUNKEN Semiconductors
Preliminary Information
Rev. A2, 15-Jan-98

4페이지










U4488B 전자부품, 판매, 대치품
Internal Pin Configuration
1, 15
2 k
10 k
2 k
10 k
2.3 V
2, 16
13792
Figure 4. Sound IF inputs (Pins 1, 2 resp. 15,16)
U4488B
5
2.75 V
13798
Figure 7. Loop filter (Pin 5)
3
13796
Figure 5. AGC time constant (Pin 3)
4
4.25 V
3.5 V
13797
Figure 6. Internal reference voltage (Pin 4)
1.45 V
6
100
1 mA
IDC
Figure 8. AM output (Pin 6)
13799
3.5 V
17 k
7 15.5 k
23 k
13800
Figure 9. AGC switch (Pin 7)
TELEFUNKEN Semiconductors
Rev. A2, 15-Jan-98
Preliminary Information
7 (9)

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전력 반도체 판매 ( IGBT, TR 모듈, SCR, 다이오드 모듈 )

휴대전화 : 010-3582-2743


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부품번호상세설명 및 기능제조사
U4488B

Quasi-Split Sound Circuit and AM Demodulator

TEMIC Semiconductors
TEMIC Semiconductors

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