Sanyo LA75503V Specifications

Ordering number : ENN6804

41301RM (OT) No. 6804-1/15

Overview

The LA75503V is an adjustment free VIF/SIF signal processing IC for PAL TV/VCR. It supports 38 MHz, 38.9 MHz, and 39.5 MHz as the IF frequencies, as well as PAL sound multi-system (M/N, B/G, I, D/K), and contains an on-chip sound carrier trap and sound carrier BPF. To adjust the VCO circuit, AFT circuit, and sound filter, 4-MHz external crystal or 4-MHz external signal is needed.

Functions

• VIF amplifier

• VCO adjustment free PLL detection circuit

• Digital AFT circuit

• RF AGC

• Buzz canceller

• Equalizer amplifier

• Internal sound carrier BPF

• Internal sound carrier trap

• PLL-FM detector

• Reference oscillation circuit

Features

• Internal VCO adjustment free circuit eliminating need for VCO coil adjustments.

• Internal sound carrier BPF and sound carrier trap enable easy configuration of PAL sound multi-system at low cost.

• Considerably reduces the number of required peripheral parts.

•Use of digital AFT eliminates problem of AFT tolerance.

• Package: SSOP30 (275 mil)

Package Dimensions

unit: mm

3191A-SSOP30 (275 mil)

SANYO: SSOP30 (275 mil)

[LA75503V]

LA75503V

SANYO Electric Co.,Ltd. Semiconductor Company

TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN

Adjustment Free VIF/SIF Signal Processing IC

for PAL TV/VCR

Monolithic Linear IC

Any and all SANYO products described or contained herein do not have specifications that can handle applications that require extremely high levels of reliability, such as life-support systems, aircraft’s control systems, or other applications whose failure can be reasonably expected to result in serious physical and/or material damage. Consult with your SANYO representative nearest you before using any SANYO products described or contained herein in such applications.

SANYO assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all SANYO products described or contained herein.

No. 6804-2/15

LA75503V

Parameter Symbol Conditions Ratings Unit

Maximum supply voltage V

max 7 V

Circuit voltage

V16 V

V18 V

I30 –1 mA

Circuit current

I17 +0.5 mA

I6 –10 mA

I4 –3 mA Allowable power dissipation Pd max Ta ≤ 70°C (*Mounted on a printed circuit board) 550 mW Operating temperature Topr –20 to +70 °C Storage temperature Tstg –55 to +150 °C

Specifications

Maximum Ratings at Ta = 25°C

Parameter Symbol Conditions Ratings Unit

Recommended supply voltage V

5 V

Operating voltage range V

op 4.5 to 5.5 V

Operating Conditions at Ta = 25°C

Parameter Symbol Conditions

Ratings

Unit

min typ max

[VIF Block ]

Circuit current I17 64.0 73.6 mA Maximum RF AGC voltage V14H Collector load 30 kΩ VC2 = 9 V 8.5 9 — V Minimum RF AGC voltage V14L 0.3 0.7 V Input sensitivity Vi 33 39 45 dBµV AGC range GR 58 dB Maximum allowable input Vimax 92 97 dBµV No-signal video output voltage V4 3.3 3.6 3.9 V Synchronizing signal tip voltage V4tip 1.0 1.3 1.6 V Video output level V

1.7 2.0 2.3 Vpp Video signal-to-noise ratio S/N B/G 48 52 dB C-S beating IC-S P/S = 10 dB 26 32 38 dB Differential gain DG Vin = 80 dBµ 3 10 % Differential phase DP 2 10 deg Black noise threshold voltage VBTH 0.7 V Black noise clamp voltage VBCL 1.8 V VIF input resistance Ri 2.5 3.0 kΩ VIF input capacitance Ci 3 6 PF Maximum AFT voltage V13H 4.3 4.7 5.0 V Minimum AFT voltage V13L 0 0.2 0.7 V AFT tolerance 1 dfa1 f = 38.9 MHz ±35 ±70 kHz AFT tolerance 2 dfa2 f = 38.0 MHz ±35 ±70 kHz AFT tolerance 3 dfa3 f = 39.5 MHz ±35 ±70 kHz AFT detection sensitivity Sf RL = 100 kΩ//100 kΩ 40 80 120 mV/kHz AFT dead zone fda 30 60 kHz APC pull-in range (U) fpu 1.5 2.0 MHz APC pull-in range (L) fpl 1.5 2.0 MHz VCO maximum frequency range (U)

dfu 1.5 2.0 MHz

VCO maximum frequency range (L)

dfl 1.5 2.0 MHz

VCO control sensitivity

β 2.0 4.0 8.0 kHz/mV

Electrical Characteristics at Ta = 25°C, VCC= 5.0 V, fp = 38.9 MHz

Note: * Circuit board dimensions: 65 × 72 × 1.6 mm3, material: paper phenol.

Continued on next page.

No. 6804-3/15

LA75503V

Continued from preceding page.

Parameter Symbol Conditions

Ratings

Unit

min typ max N trap1 (4.75 MHz) NT1 wrt 1 MHz –30 –35 dB N trap2 (5.25 MHz) NT2 wrt 1 MHz –19 –24 dB BG trap1 (5.75 MHz) BT1 wrt 1 MHz –27 –32 dB BG trap2 (6.1 MHz) BT2 wrt 1 MHz –20 –25 dB BG trap3 (5.85 MHz) BT3 wrt 1 MHz –27 –32 dB I trap1 (6.25 MHz) IT1 wrt 1 MHz –25 –30 dB I trap2 (6.8 MHz) IT2 wrt 1 MHz –15 –20 dB DK trap1 (6.75 MHz) DT1 wrt 1 MHz –25 –30 dB Group delay 1 NTSC (3.0 MHz) NGD1 wrt 1 MHz 10 40 70 ns Group delay 1-1 NTSC (3.5 MHz) NGD1-1 wrt 1 MHz 70 120 170 ns Group delay 2 BG (4 MHz) BGD2 wrt 1 MHz 30 60 90 ns Group delay 2-1 BG (4.4 MHz) BGD2-1 wrt 1 MHz 100 150 200 ns Group delay 3 I (4 MHz) IGD3 wrt 1 MHz 0 30 60 ns Group delay 3-1 I (4.4 MHz) IGD3-1 wrt 1 MHz 30 60 90 ns Group delay 4 DK (4 MHz) DGD4 wrt 1 MHz 0 15 30 ns Group delay 4-1 DK (4.4 MHz) DGD4-1 wrt 1 MHz 0 30 60 ns

[1st SIF Block]

Conversion gain Vg fp = 5.5 MHz, Vi = 500µV 26 32 38 dB SIF carrier output level So Vi = 10 mV 100 mVrms First SIF maximum input Simax So ±2 dB 106 dBµV First SIF input resistance Ris 5.0 6.0 kΩ First SIF input capacitance Cis 3 6 pF

[SIF Block]

Limiting sensitivity Vi(lim)

fp = 5.5 MHz, ∆F = ±30 kHz at 400 Hz

46 52 58 dBµV FM detector output voltage Vo(FM) 560 700 850 mVrms AM rejection ratio AMR AM = 30% at 400 Hz 50 60 dB Total harmonic distortion THD f = 5.5 MHz, ∆F = ±30 kHz 0.3 1.0 % FM detector output S/N

S/N(FM) 55 60 dB

BPF 3-dB bandwidth

BW ±100 kHz

PAL de-emphasis

Pdeem fm = 3 kHz –3 dB

NTSC de-emphasis

Ndeem fm = 2 kHz –3 dB

PAL/NT audio voltage gain difference

GD 6 dB

[Others]

4-MHz level (during external input)

X4MIN Terminated 86 dBµ

SIF system SW threshold voltage

V10, V11 1.4 V

IF system SW threshold resistance

V12 270 kΩ

Split/inter SW V16 0.5 V

System Switching

No. 6804-4/15

LA75503V

• SIF system switch The SIF system is switched by setting pins A (pin 13) and B (pin 14) to GND or OPEN.

A B B/G I D/K M/N FM DET LEVEL De-emphasis GND GND O 6 dB 75 µs GND OPEN O 0 dB 50 µs

OPEN GND O 0 dB 50 µs OPEN OPEN O 0 dB 50 µs

Note: "O" indicates that the system is selected.

• IF system switch

38.9 MHz is selected as the IF frequency by leaving pin 15 (crystal oscillation) open. 38 MHz is selected by adding 220 kΩ between pin 15 and GND. This device can also select 39.5 MHz operation by adding a 220 kΩ resistor between pin 15 and VCC.

• Split/inter carrier switch Inter carrier is selected by setting the first SIF input (pin 20) to GND.

Sound Trap

The trapping point of the sound trap is set approximately 250 kHz above the SIF center frequency of each mode to improve the video S/N. Therefore, design using split specifications is preferable.

Pin Assignment

SIF INPUT

FM FILTER

1st SIF OUT

VIDEO DET OUT

EQ FILTER

SIF AGC FILTER

APC FILTER

FLL FILTER

VCO COIL

SYSTEM SW [A]

SYSTEM SW [B]

REF OSC

FM DET OUT

FM NOISE FILTER

RF AGC VR

SIF PLL FILTER

FILTER CONTROL CAPACITOR

VIF INPUT

GND

VCC

1st SIF INPUT

IF AGC FILTER

RF AGC OUT

AFT OUT

15 16

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LA75503V

No. 6804-5/15

LA75503V

Test Circuit

Input Impedance Measuring Circuit (VIF, First SIF input impedance)

30 29 28 27 26 25 24 23 22 21 20 19 18 17 16

1 2 3 4 5 6 7 8 9 10 11

13 14 15

100 µF

15 kΩ

10 kΩ

1 kΩ

VIF INPUT

Impedance analyzer

*: 0.01 µF in case of unspecified capacitor

1st SIF INPUT

VCC

LA75503V

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