Mitsubishi M51348AVP free download

File name M51348AVP.pdf

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 Rated supply voltage 3.0V to 6.0V 4.5V Rev.1.0, Sep.19.2003, page 1 of 9 M51348AVP Block diagram &Pin configuration Audio OUTPUT 13 Buffer 12 SIF GND Electronic VR 14 FM(VR) det 11 DC F/B FM Detector IN 15 Limiter 10 SIF INPUT Limiter OUTPUT 16 Video Amp. 9 SIF Vcc AFT OUTPUT 17 AFT 8 VIF GND Video OUTPUT 18 2nd Amp. Video det. 1st Amp. 7 IF INPUT LLD COIL 19 6 IF INPUT LLD COIL 20 5 VIF Vcc AFT COIL 21 Sync. Sep. RF AGC (Forward) 4 RF AGC Delay Sync sep INPUT 22 3 RF AGC OUTPUT Sync OUTPUT 23 IF AGC det. 2 AGC Filter II IF AGC Adjust 24 1 AGC Filter I . Rev.1.0, Sep.19.2003, page 2 of 9 M51348AVP Absolute maximum ratings (Ta=25°C,unless otherwise noted.) Parameter Supply Voltage(1) Supply Voltage(2) Power Dissipation Operating Temperature Storage Temperature Symbol Vcc(5) Vcc(9) Pd Topr Tstg Ratings 7.5 7.5 360 - 20 to +75 - 40 to +125 Unit V V mW °C °C Note Temperature Characteristics 500 400 Power Dissipation(mw) 300 200 100 0 0 25 50 75 100 125 Ambient Temperature Ta(oC) Rev.1.0, Sep.19.2003, page 3 of 9 M51348AVP Electrical Characteristics AC Characteristic (VIF) (Ta = 25°C, unless otherwise noted.) No 1 2 3 Parameter Circuit current Video detector output Input sensitivity symbol IVIF Vodet Vinmin Test point 5 18 18 Limits Input SG1 90dBµ SG1 Variable SG1 Variable SG2 Test conditions Input current with 4.5V in 5. Output amp