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Renesas Electronics Components Datasheet

M51348AVP Datasheet

VIF/SIF

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M51348AVP
VIF/SIF for Low Supply Voltage
REJ03F0062-0100Z
Rev.1.0
Sep.19.2003
Description
The M51348 is a low supply voltage, low power semiconductor IC for compact TV sets which includes Video
Intermediate Frequency (VIF), Sound Intermediate Frequency (SIF), and Synchronous Separation (Sync. Sep.)
functions.
An IF amplifier. Video detector (with simultaneous sound detector), IF AGC, RF AGC (forward type), AFT, SIF
limiter amplifier, FM detector electronic volume, and synchronous separation function are provided.
The package is of the 24-pin mini-flat type.
The M513848AFP has better DG and DP but less VIF input sensitivity than the M51348FP.
Features
This IC can be used with very low supply voltage and low power and it comes in a mini-flat package to suit the
compact TV or compact TV tuner.
Minimum operating power voltage
3V
Consuming current
16mA (when used with 4.5V supply voltage)
Current automatically decreases to ensure power saving when a strong signal is received, when the electronic
volume control is at its lowest.
There are separate GND pins for the VIF/Sync. Sep. circuit and for the SIF circuit so that cross-interference is
reduced.
It is possible to adjust the video detector output amplitude by controlling the 24-pin voltage externally.
The AGC works fast because of the 2-stage AGC filter.
AGC has high stability against outside noise due to the AGC noise canceller.
Emitter input circuit is used in Sync. Sep. Output is taken from the Sync. Positive polarity.
Application
Portable B/W, color TV
Recommend Operating Condition
Supply voltage range 3.0V to 6.0V
Rated supply voltage 4.5V
Rev.1.0, Sep.19.2003, page 1 of 9


Renesas Electronics Components Datasheet

M51348AVP Datasheet

VIF/SIF

No Preview Available !

M51348AVP
Block diagram &Pin configuration
Audio OUTPUT 13
Buffer
12 SIF GND
Electronic VR 14
FM Detector IN 15
Limiter OUTPUT 16
AFT OUTPUT 17
Video OUTPUT 18
LLD COIL 19
LLD COIL 20
AFT COIL 21
Sync sep INPUT 22
Sync OUTPUT 23
IF AGC Adjust 24
11 DC F/B
FM(VR)
det
Limiter
10 SIF INPUT
9 SIF Vcc
AFT
Video
Amp.
8 VIF GND
7 IF INPUT
Video
det.
2nd
Amp.
1st
Amp.
6 IF INPUT
5 VIF Vcc
4 RF AGC Delay
Sync.
Sep.
RF AGC
(Forward)
3 RF AGC OUTPUT
IF AGC
det.
2 AGC Filter II
1 AGC Filter I
.
Rev.1.0, Sep.19.2003, page 2 of 9


Part Number M51348AVP
Description VIF/SIF
Maker Renesas
Total Page 10 Pages
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