Sanyo LA75505M Specifications

Ordering number : ENN*6930

41301RM (OT) No. 6930-1/13

Overview

The LA75505M is a VIF/SIF signal processing IC for
NTSC TV/VCR. It supports the 45.75 MHz and 58.75
MHz as the IF frequencies. On-chip sound carrier trap and
sound carrier BPF circuits make it ideal for compact and
light-weight tuner applications. To adjust the VCO circuit,
AFT circuit, and sound filter, 4-MHz external crystal or 4­MHz 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.

• Considerably reduces the number of required peripheral
parts by providing on-chip sound carrier BPF and sound
carrier trap circuits.

•Use of digital AFT eliminates problem of AFT
tolerance.

• Package: MFP24S (300 mil)

Package Dimensions

unit: mm

3112-MFP24S

112

24

13

12.6

0.8

1.0

0.15

0.35

5.4

6.35

7.6

0.625

1.8max

1.5

0.1

Preliminary

SANYO: MFP24S (300 mil)

[LA75505M]

LA75505M

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 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. 6930-2/13

LA75505M

Parameter Symbol Conditions Ratings Unit

Maximum supply voltage V

CC

max 7 V
Allowable power dissipation Pd max Ta ≤ 70°C (*Mounted on a printed circuit board) 470 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

CC

5 V

Operating voltage range V

CC

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

O

1.7 2.0 2.3 Vpp
Video signal-to-noise ratio S/N 46 50 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
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 = 45.75 MHz ±35 ±45 kHz
AFT tolerance 2 dfa2 f = 58.75 MHz ±45 ±70 kHz
AFT detection sensitivity Sf RL = 100 kΩ//100 kΩ 40 80 120 mV/kHz
AFT dead zone fda 60 100 kHz
APC pull-in range (U) fpu 1.0 1.5 MHz
APC pull-in range (L) fpl 1.0 1.5 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
N trap1 (4.75 MHz) NT1 wrt 1 MHz –30 –35 dB
N trap2 (5.25 MHz) NT2 wrt 1 MHz –19 –24 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

Electrical Characteristics at Ta = 25°C, VCC= 5.0 V, fp = 45.75 MHz

Note: * Circuit board dimensions: 114.3 × 76.1 × 1.6 mm3, material: glass epoxy

Continued on next page.

No. 6930-3/13

LA75505M

Continued from preceding page.

Parameter Symbol Conditions

Ratings

Unit

min typ max

[1st SIF Block]

Conversion gain Vg fp = 4.5 MHz, Vi = 500µV 26 32 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 = 4.5 MHz, ∆F = ±25 kHz at 400 Hz

61 dBµV
FM detector output voltage Vo(FM) 480 600 750 mVrms
AM rejection ratio AMR AM = 30% at 400 Hz 50 60 dB
Total harmonic distortion THD f = 4.5 MHz, ∆F = ±25 kHz 0.5 1.0 %
FM detector output S/N

S/N(FM) 55 60 dB

BPF 3-dB bandwidth

BW ±100 kHz

NTSC de-emphasis

Ndeem fm = 2 kHz –3 dB

[Others]

4-MHz level (during external input)

X4MIN Terminated 86 dBµ

IF system SW threshold resistance

V12 270 kΩ

Split/inter SW V16 0.5 V

System Switching

No. 6930-4/13

LA75505M

• IF system switch

45.75 MHz is selected as the IF frequency by leaving pin 12 (crystal oscillation) open. 58.75 MHz is selected by
adding 220 kΩ between pin 12 and GND.

• Split/inter carrier switch
Inter carrier is selected by setting the first SIF input (pin 16) to GND.

Pin Assignment

19

2

1

SIF INPUT

FM FILTER

1st SIF OUT

VIDEO DET OUT

EQ OUT

APC FILTER

FLL FILTER

VCO COIL

VCO COIL

SIF AGC FILTER

NC

REF OSC

FM DET OUT

RF AGC VR

SIF PLL FILTER

FILTER CONTROL CAPACITOR

VIF INPUT

VIF INPUT

GND

VCC

1st SIF INPUT

IF AGC FILTER

RF AGC OUT

AFT OUT

3

4

5

6

7

8

9

16

17

18

20

21

22

23

24

10

11

12

13

14

15

Top view

LA75505M