Sanyo LA75675M-S Specifications

Ordering number : ENN6276B

Monolithic Linear IC

LA75675M-S

VIF/SIF IF Signal-Processing Circuit that Supports

NTSC Intercarrier for TV and VCR Products

Overview

The LA75675M-S is an NTSC intercarrier VIF/SIF IC that adopts a semi-adjustment-free structure. In particular, it uses VCO adjustment to make AFT adjustment unnecessary and thus simplifies the overall adjustment process. A PLL-based technique is adopted for FM detection. The 5 V supply voltage provides compatibility with other multimedia systems. In addition it achieves high audio quality by incorporating a built-in buzz canceller that suppresses Nyquist buzz.

Functions

[VIF]
• VIF amplifier • PLL detector • BNC • RF AGC
• EQ amplifier • AFT	• IF AGC • Buzz canceller
[SIF]
• Limiter amplifier • PLL FM detector

	800					Pd max - Ta
W	720	When mounted		on a 65 × 72 × 1.6 mm3 paper-phenol printed circuit board
—
	700
Pdmax
	600
dissipation,
	500
	420				Independent		IC
power	400
	300
Allowable	200
	100
	0
	-20		0	20				40		60		70	80		100

Features

•No AFT or SIF coils are used, thus eliminating adjustments.

•Excellent audio performance due to the built-in buzz canceller.

•VCC = 5 V and a low power dissipation of 250 mW.

Package Dimensions

unit: mm

3112A-MFP24S
[LA75675M-S]
24	13
		5.4		7.6
1	12	1.7max	0.15	0.63
12.5
		1.5
		0.1
0.35	1.0	(0.75)
		SANYO: MFP24S

Ambient temperature, Ta — °C

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.

SANYO Electric Co.,Ltd. Semiconductor Company

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

51500RM (OT) No. 6276-1/13

LA75675M-S

Specifications

Maximum Ratings at Ta = 25°C

	Parameter	Symbol	Conditions	Ratings	Unit
	Maximum supply voltage	VCC max		6	V
	Circuit voltage	V13, V17		VCC	V
		I6		–3	mA
	Circuit current	I10		–10	mA
		I24		–2	mA
	Allowable power dissipation	Pd max	Ta ≤ 50°C, independent IC	420	mW
			*: Mounted on a PCB.	720	mW
	Operating temperature	Topr		–20 to +70	°C
	Storage temperature	Tstg		–55 to +150	°C

*: A 65 × 72 × 1.6 mm3 paper-phenol printed circuit board

Operating Conditions at Ta = 25°C

Parameter	Symbol	Conditions	Ratings	Unit
Recommended supply voltage	VCC		5	V
Operating voltage range	VCCop		4.5 to 5.5	V

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

Parameter	Symbol		Conditions		Ratings		Unit
				min	typ	max
[VIF Block]
Circuit current	I5			32	40	48	mA
Maximum RF AGC voltage	V14H			VCC – 0.5	VCC		V
Minimum RF AGC voltage	V14L				0	0.5	V
Input sensitivity	VIN	S1 = OFF		32	38	44	dBµV
AGC range	GR			58	63		dB
Maximum allowable input	VINmax			95	100		dBµV
No-signal video output voltage	V6			3.5	3.8	4.1	V
Sync signal tip voltage	V6 tip			0.9	1.2	1.5	V
Video output level	VO			1.7	2.0	2.3	Vp-p
Black noise threshold voltage	VBTH			0.5	0.8	1.1	V
Black noise clamp voltage	VBCL			1.6	1.9	2.2	V
Video signal-to-noise ratio	S/N			48	52		dB
C-S beating	IC-S			38	43		dB
Frequency characteristics	fC	6 MHz		–3.0	–1.5		dB
Differential gain	DG				3.0	6.5	%
Differential phase	DP				3	5	deg
No-signal AFT voltage	V13			2.0	2.5	3.0	V
Maximum AFT voltage	V13H			4.0	4.4	5.0	V
Minimum AFT voltage	V13L			0	0.18	1.00	V
AFT detection sensitivity	Sf			28	40	52	mV/kHz
VIF input resistance	RIN	45.75 MHz			1.5		kΩ
VIF input capacitance	CIN	45.75 MHz			3		pF
APC pull-in range (U)	fPU			1.3	2.0		MHz
APC pull-in range (L)	f				–2.0	–1.4	MHz
AFT tolerance frequency 1	dfa 1			–150	0	+150	kHz
VCO 1 maximum variability range (U)	dfu			1.5	2.0		MHz
VCO 1 maximum variability range (L)	dfl				–2.0	–1.5	MHz
VCO control sensitivity	B			1.3	2.7	5.4	kHz/mV

Continued on next page.

No. 6276-2/13

LA75675M-S

Continued from preceding page.

	Parameter	Symbol	Conditions		Ratings		Unit
				min	typ	max
	[SIF Block]
	Limiting sensitivity	Vli (lim)		39	45	51	dBµV
	FM detection output voltage	V (FM)	4.5 MHz ± 25 kHz *1	400	520	660	mVrms
		O
	AMR rejection ratio	AMR		50	60		dB
	Total harmonic distortion	THD			0.3	0.8	%
	SIF signal-to-noise ratio	S/N (FM)		59	64		dB
	4.5 MHz output level	Vsout	SIF IN 80 dBµV	82	89	96	dBµV

Note: 1. The FM detection output level can be reduced and the FM dynamic range improved by inserting the resistor R in series with the capacitor between pin 23 and ground.

Pin Arrangement

SIF INPUT	1	24	FM DET OUT
BIAS FILTER	2	23	FM FILTER
SIF OUT	3	22	BPF-OUT
NC	4	21	RF AGC VR
VCC	5	20	GND
VIDEO OUT	6	19	VIF INPUT
		LA75675M-S
EQ FILTER	7	18	VIF INPUT
EQ INPUT	8	17	1st AGC FILTER
APC FILTER	9	16	2nd AGC FILTER
VIDEO DET OUT	10	15	2nd AGC FILTER
VCO COIL	11	14	RF AGC OUT
VCO COIL	12	13	AFT OUT

Top view

A12615

No. 6276-3/13

LA75675M-S

Internal Equivalent Circuit and External Circuits

IF

RFAGC

RF AGC

IN PUT

AUDIO

VR

SAW(P)

OUT PUT

OUT PUT 7.5 kΩ

1µF

0.01µF

10kΩ -B

0.015µF

0.01µF

330pF

0.01µF

0.01µF

0.01µF

+

24

23

22

21

20

19

18

17

16

15

14

13

1 kΩ

100 Ω

6.8 kΩ

30 kΩ

V

V

kΩ

120 kΩ

Ωk120 1 kΩ

300Ω

1kΩ

k1Ω

k1Ω

Ω

2

4.7 kΩ

500 Ω

Ω 1 k

kΩ

10 k

10

1 kΩ 1 kΩ

1 kΩ

V

V

kΩ

kΩ

kΩ

1 kΩ 2.2 kΩ

1.2

1.2

10

Ω

4 k Ω

1 V

9.2 kΩ

200 Ω

200

1

2

3

4

5

6

7

8

0.47 µF

9

10

11

12

1 µF

+

BPF

+

0.01 µF

150 Ω

VCO

4.5 MHz

330 Ω

330 Ω

R

1 µF

2.2 kΩ

COIL

VIDEO

OUT

Note: Resistor R must have a value of 470 Ω or larger.

AFT

OUTPUT

VCC

GND

A12616

No. 6276-4/13