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PDF M52334FP Data sheet ( Hoja de datos )
| Número de pieza | M52334FP | |
| Descripción | PLL-SPLIT VIF/SIF IC | |
| Fabricantes | Mitsubishi | |
| Logotipo |  |
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MITSUBISHI ICs (TV)
M52334FP
PLL-SPLIT VIF/SIF IC
DESCRIPTION
The M52334FP is IF signal-processing IC for VCRs and TVs. It
enable the PLL detection system despite size as small as that of
conventional quasi-synchronous VIF/SIF detector, IF/RF AGC, SIF
limiter and FM detector.
FEATURES
• Video detection output is 2VP-P. It has built-in EQ AMP.
• The package is a 20-pin flat package, suitable for space saving.
• The video detector uses PLL for full synchronous detection
circuit. It produces excellent characteristics of DG, DP, 920kHz
beat, and cross color.
• Dynamic AGC realizes high speed response with only single
filter.
• Video IF and sound IF signal processings are separated from
each other. VCO output is used to obtain intercarrier.
• As AFT output voltage uses the APC output voltage, VCO coil is
not used.
• Audio FM demodulation uses PLL system, so it has wide
frequency range with no external parts and no adjustment.
• This IC corresponds to only inter of NTSC system.
APPLICATION
TV sets, VCR tuners
RECOMMENDED OPERATING CONDITION
In case of VCC and Vreg. out short
Supply voltage range....................................................4.75 to 5.25V
Recommended supply voltage...................................................5.0V
Incase of Vreg. out open
Supply voltage range......................................................8.5 to 12.5V
PIN CONFIGURATION (TOP VIEW)
EQ OUT 1
APC FILTER 2
EQ IN 3
Vreg. OUT 4
VCO COIL 5
VCO COIL 6
VCC 7
VIDEO OUT 8
SIF GND 9
LIMITER IN 10
20 EQ F/B
19 AFT OUT
18 RF AGC DELAY
17 VIF IN
16 VIF IN
15 GND
14 RF AGC OUT
13 IF AGC FILTER
12 NFB
11 AUDIO OUT
Outline 20P2N-A
BLOCK DIAGRAM
RF AGC DELAY
EQ F/B AFT OUT
VIF IN
20 19 18 17
VIF IN
16
IF AGC FILTER
GND RF AGC OUT
NFB AUDIO OUT
15 14 13 12 11
VIF AMP
RF AGC
IF AGC
AF AMP
EQ
AMP
AFT
VIDEO
DET
APC
FM DET
VCO
Vcc REG
LIM AMP
1 2 3 4 5 6 7 8 9 10
EQ OUT
EQ IN
VCO COIL
VCC
SIF GND
APC FILTER
Vreg. OUT
VCO COIL
VIDEO OUT
LIMITER IN
1
1 page  
TEST CIRCUIT
VCC
AFT
OUT
IF IN
RF AGC
Vreg. Delay
OUT
MITSUBISHI ICs (TV)
M52334FP
PLL-SPLIT VIF/SIF IC
RF AGC
OUT
AF OUT
20 19 18 17 16 15 14 13 12 11
VIF AMP
RF AGC
IF AGC
AF AMP
2.2VP-P
EQ OUT
EQ
AMP
AFT
VIDEO
DET
APC
VCO
Vcc REG
12345678
FM DET
LIM AMP
9 10
VCC
VIDEO OUT
TYPICAL CHARACTERISTICS
THERMAL DERATING (MAXIMUM RATING)
1750
1500
1250
1225
1000
750
637
500
250
0
-20 0 25 50 75 100 125 150
AMBIENT TEMPERATURE Ta (°C)
5
5 Page 
Pin 13 (IF AGC FILTER)
VCC
13
1kΩ
MITSUBISHI ICs (TV)
M52334FP
PLL-SPLIT VIF/SIF IC
In spite of the 1-pin filter configuration, 2-pin filter
characteristics are available by utilizing the dynamic AGC circuit.
[V8]
weak
electric field
0
[IF input]
strong
electric field
Pin 14 (RF AGC OUTPUT)
A current mode output is available in the reverse AGC operation.
The maximum
outflow current
is 0.2mA.
The maximum
inflow current
is 0.2mA.
14
Tuner
VCC
[V14]
(in open-loop condition)
weak
electric field
0
[IF input]
strong
electric field
Note: Connecting a nonpolarity capacitor of 1µF between pin14 and pin 18 improves AGC operating speed.
In that case, the capacitors between pin14/pin18 and ground should be removed.
Pin 15 (GND)
15
It is GND pin except for SIF.
Pin 16, Pin 17 (VIF INPUT)
Bias
1.2kΩ
1.2kΩ
5
SAW
4
Terminal voltage : 1.45V
It should be designed considering careful impedance
matching with the SAW filter.
11
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet M52334FP.PDF ] | |
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