TA1372FNG datasheet(9/15 Pages) TOSHIBA

Nome de Peças	TA1372FNG

Descrição Electrónicos	VHF Band RF Modulator IC for VCRs and Set top boxes

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Fabricante Electrônico	TOSHIBA [Toshiba Semiconductor]

Página de início	http://www.semicon.toshiba.co.jp/eng

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9 / 15 page

TA1372FNG

2003-12-25

9

No.

Characteristics

Symbol

Min

Typ.

Max

Unit

Note

3-1-1

Picture to Sound ratio

RP/S

-18

-16

-14

dB

P/S ratio:

−16dB set-up, Connecting a

16k ohm resistor between pin 10 and

GND. staircase (B/W) signal: 0.5-Vp-p

input

3-1-2

Picture to Sound ratio

(Difference of channel)

ΔRP/S

-0.5

0

0.5

dB

P/S ratio:

−16dB set-up, Connecting a

16k ohm resistor between pin 10 and

GND. staircase (B/W) signal: 0.5-Vp-p

input, RP/S (3ch) –RP/S (4ch)

3-2-1

Maximum P/S ratio

RP/S max

-11

-9

-

dB

P/S ratio: maximum set-up,

Pin 10 is open.

staircase (B/W) signal: 0.5-Vp-p input

3-2-2

Minimum P/S ratio

RP/S min

-

-18

-16

dB

P/S ratio: minimum set-up, Pin 10 is

connected to GND.

staircase (B/W) signal: 0.5-Vp-p input

3-3

Sound modulation sensitivity

βFM

0.27

0.3

0.33

kHz/mV 1-kHz sine wave: 167 mVp-p input

βFM = ∆f (kHz)/ 167 (mV)

3-4-1

Sound S/N ratio 1

S/N(FM1)

51

52.5

-

dB

1-kHz sine wave input,

±25 kHz Dev. = 0dB, Inter Carrier

demod., De-Emph

= IN

3-4-2

Sound S/N ratio 2

(with video signal)

S/N(FM2)

50

51.5

-

dB

1-kHz sine wave input,

±25 kHz Dev. = 0dB, Color bar signal:

0.5-Vp-p input, Inter Carrier demod.,

De-Emph

= IN

3-5

Sound distortion

THD

-

0.3

0.5

%

1-kHz sine wave:

±25kHz Dev.

3-6

Sound frequency response

fs

-2

0

2

dB

100 Hz~100 kHz, 1-kHz reference

3-7

Maximum FM deviation

ΔDev

400

450

-

%

1-kHz sine wave input, THD<3%

3-8-1

Sound RF 2nd harmonic

VSH1

-

-70

-65

dB

P/S ratio

= −16dB set-up,

Video carrier level reference

3-8-2

Sound RF 3rd harmonic

VSH2

-

-75

-70

dB

P/S ratio

= −16dB set-up,

Video carrier level reference

3-9-1

Sound carrier frequency

accuracy 1

Δfs4

-750

0

750

Hz

Reference frequency 4MHz, Internal

oscillation mode, Series capacitance of

crystal : 6 pF

Sound

Block

3-9-2

Sound carrier frequency

accuracy 2

Δfs358

-0.6

-

Hz

Reference frequency 3.579545MHz,

External signal input mode

4-1-1

Input voltage Low level for

channel selection

ViL1

0

-

1.7

V

Pin 8: Low:67.25MHz,

Open,High:61.25MHz

4-1-2

Input voltage High level for

channel selection

ViH1

2

-

Vcc

V

Pin 8

4-2-1

Input voltage Low level for

Carrier off mode selection

ViL2

0

-

1.7

V

Pin 6 Low,Open : Carrier off ,

Antenna SW Out Low

4-2-2

Input voltage High level for

Carrier off mode selection

ViH2

2

-

Vcc

V

Pin 6 High : Carrier on ,

Antenna SW Out High

4-3-1

Input voltage Low level for

reference signal mode

selection

ViL3

0

-

1.2

V

Pin 1 Low : Internal oscillation mode with

4MHz X'tal

4-3-2

Input voltage Middle level for

reference signal mode

selection

ViM3

1.8

2.5

3.2

V

Pin 1 Middle : 3.58MHz External signal

input mode

4-3-3

Input voltage High level for

reference signal mode

selection

ViH3

3.8

-

Vcc

V

Pin 1 Open,High : 4MHz External signal

input mode

4-4

Threshold voltage for

power-on reset

VRESET

2.5

2.8

3.1

V

4-5-1

Input voltage Low level for

Test mode selection

VIl4

0

-

1.2

V

Pin 5 Low : Normal mode

Logic

Block

4-5-2

Input voltage High level for

Test mode selection

ViH4

1.8

-

Vcc

V

Pin 5 High : Test mode

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