LA72912V

No.A1409-2/12

Electrical Characteristics at Ta

= 25°C, VCC = 5V

DC CHARACTERISTICS T6 = 0.4V, T17 = 2.0V, T18 = 0.4V

Ratings

Parameter

Symbol

In

OUT

Conditions

min

typ

max

Unit

Control terminal

(Pin6,9) Low level

CNT6L

CNT17L

T6

T17

Low level of control terminal of ALL mode.

T6 = 0.4V(DEMOD mode),T17 = 0.4V (Standby mode)

0

0.4

V

Control terminal

(Pin6,9)High level

CNT6H

CNT17H

T6

T17

High level of input terminal of ALL mode

T6 = 2.0V (MOD mode), T17 = 2.0V (Normal mode)

2.0

5.0

V

Input5 Low level

IN5L

T5

Low level of input terminal of MOD mode

T6 = 2.0V, T17 = 2.0V, T18 = 0.4V

0

0.4

V

Input5 High level

IN5H

T5

High level of input terminal of MOD mode

T6 = 2.0V, T17 = 2.0V, T18 = 0.4V

2.0

5.0

V

Input18 Low level

IN18L

T18

Low level of input terminal of MOD mode

T5 = 0.4V, T6 = 2.0V, T17 = 2.0V

0

0.4

V

Input18 High level

IN18H

T18

High level of input terminal of MOD mode

T5 = 0.4V, T6 = 2.0V, T17 = 2.0V

2.0

5.0

V

Output18 terminal

High level

OPH18

T18

DEMOD mode: FM-Signal input

T6 = 0.4V, T17 = 2.0V, Pull-UP:15K

Ω

4.7

V

Output18 terminal

Low level

OPL13

OPL18

T18

T18: DEMOD mode: FM No-signal

Measure the sink level of output terminal.

T6 = 0.4V, T17 = 2.0V, Pull-UP:15K

Ω

0

0.25

0.4

V

InpuT20 Low level

IN20L

T20

T20

Voltage of terminal at AGC ON

T6 = 0.4V, T17 = 2.0V

0

3

V

InpuT20 High level

IN20H

T20

T20

Voltage of terminal at AGC OFF

T6 = 0.4V, T17 = 2.0V

4.5

5.0

V

5pin AC input dynamic

range

ACIN5

T5A

T3

Input amplitude level of FM signal

Freq: 11.5MHz to 13.5MHz

1000

mVp-p

16pin AC input

dynamic range

ACIN16

T24A

T3

Maximum input level of T24A at Video signal

1.5

Vp-p

Video FM Modulation Block (MOD) T6=2.0V,T17=2.0V,T18=0.4V

Ratings

Parameter

Symbol

In

OUT

Conditions

min

typ

max

Unit

Current dissipation

ICCR

measure the currents into pins 2 (MOD mode)

22.0

27.0

32.0

mA

FM modulator output

level

VFM1

T3

Measure the output level on T3 (No signal input)

It is load impedance 200

Ω between T3-GND.

1.8

2.2

Vp-p

FM Mute output level

VFM2

T3

Measure the T3 output level with 2nd call

0

10

20

mVp-p

Carrier frequency

FFM

T3

Measure the output frequency on T3

with no signal input

10.9

11.5

12.1

MHz

FM output Second

harmonic distortion

THD2

T3

Measure the second harmonics distortion

with the above condition

-30

-20

dB

Deviation

DEV

T24A

T3

With T24A 100% White 1Vp-p signal,

Measure the deviation on T3

1.9

2.0

2.1

MHz

FM modulator linearity

(11.5MHz to 13.5MHz)

LMOD

T24A

T3

Let f2.85, f3.35 and f3.85 be the output frequency

when 2.85V, 3.35V and 3.85V is applied to T24A

LMOD =

f3.35 - (f3.85 + f2.85) / 2

f3.85 - f2.85

×100

-2

0

+2

%

Emphasis gain

GEMP

T24A T20

With VIN a 300mVp-p 10kHz sine wave,

Measure the ratio of the levels on T24A and T20

-7.5

-6.0

-4.5

dB

Main linear emphasis

characteristics(1)

GME1

T24A T20

With VIN a 300mVp-p 500kHz sine wave,

Measure the ratio of the levels on T24A and T20

0.0

1.5

3.0

dB

Main linear emphasis

characteristics(2)

GME2

T24A T20

With VIN a 300mVp-p 2MHz sine wave,

Measure the ratio of the levels on T24A and T20

4.0

5.5

7.0

dB

White clipping level

LWC

T24A T20

With VIN a 1.5Vp-p 100% white video signal.

Measure the white clipping level on T20

180

200

220

%

Dark clipping level

LDC

T24A T20

With VIN a 1.5Vp-p 100% white video signal.

Measure the dark clipping level on T20.

-60

-50

-40

%

FM stop beginning

delay time

(VD characteristic 1B)

TC1

T5

T3

C7 = 0.01

µF, Time from fall of T5 signal to doing of

FM carrier of T3 STOP

240

300

360

µs

FM stop time

(VD characteristic2A)

TC2

T5

T3

C8 = 0.001

µF, Stop time of FM carrier of T3

30

40

50

µs

Minimum VD pulse

width

VDT

T5

T3

C7 = 0.01

µF, Minimum VD pulse width to which

TC1B is normally output

63

µs