AN5637 View Datasheet(PDF) - Panasonic Corporation

Part Name

Description

Manufacturer

AN5637

SECAM decoder IC

Panasonic Corporation 

ICs for TV

AN5637

s Electrical Characteristics at VCC = 9 V, Ta = 25 °C (continued)

Parameter

Symbol

Conditions

Min Typ Max Unit

Demodulator/Output (continued)

Typical input : (Pin16) Color bar signal (Composite) 1 V[p-p],

(Pin15) Sand castle pulse,

(Pin1) 4.43362 MHz sine wave 350 mV[p-p], V-BLK period

Blanking period

output DC voltage

SN ratio *3

VBLK Stable sine wave is necessary 2.2 2.7 3.2 V

in V period (4.4336 MHz)

S/N Amplitude ratio when

Deviation = 460 kHz/0 kHz

(Pin10 measurement)

30   dB

Residual high frequency amplitude

VRH Harmonic content with 100 %

white signal input

(Pin10 measurement)

  10 mV[p-p]

Output impedance

(when SECAM) Pin9

ZOS9 DC measurement, Pin1 = 5 V

260 460 660 Ω

Output impedance

(when non SECAM) Pin9

ZON9 DC measurement, Pin1 = 1.5 V

1

  MΩ

Output impedance

(when SECAM) Pin10

ZOS10 DC measurement, Pin1 = 5 V

260 460 660 Ω

Output impedance

(when non SECAM) Pin10

ZON10 DC measurement, Pin1 = 1.5 V

1

  MΩ

Sand castle pulse

Typical input : (Pin1) 4.43362 MHz sine wave 350 mV[p-p], V-BLK period

Horizontal and vertical BLK level *4 VBL Measurement of slice level of H, 0.5 1 1.5 V

V blanking pulse

Burst gate level *5

VBG Measurement of slice level of

burst gate pulse

3.4 3.9 4.4 V

Reference signal/interface

Typical input : (Pin1) 4.43362 MHz sine wave 350 mV[p-p], V-BLK period

Reference signal amplitude

Vref Amplitude range of sine wave

(4.43362 MHz) of Pin1 input

0.20  0.50 V[p-p]

System SW discrimination level

VSS Voltage when Pin10 becomes

2.5 3.0 3.5 V

open if Pin1 is 5 V to 1 V variable

IDENT

Typical input : (Pin16) Color bar signal (Chroma), (Pin15) Sand castle pulse,

(Pin1) 4.43362 MHz sine wave 350 mV[p-p], V-BLK period

Color On/Off hysteresis

HC Difference between color turn On 0.5 2

6

dB

or Off and Off to On level

Killer sensitivity

K Color turn Off level when disc-   −32 dB

rimination signal changes

150 mV[p-p] to 0 mV[p-p]

Note) *3 : Refer to "Explanations of testing method 3"

*4 : Refer to "Explanations of testing method 4"

*5 : Refer to "Explanations of testing method 5"

5

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