BA7207AK View Datasheet(PDF) - ROHM Semiconductor

Part Name

Description

Manufacturer

BA7207AK

SECAM chroma signal processor for VHS VCRs

ROHM Semiconductor 

Video ICs

BA7207AS / BA7207AK

•Electrical characteristics (unless otherwise noted, Ta = 25°C, VCC = 5.0V)

Parameter

Symbol Min. Typ. Max. Unit

[Total device]

Conditions

Measurement

circuit

REC mode supply current

IREC 39.2 56.0 72.8 mA REC mode

Fig.1

PB mode supply current

IPB

46.9 67.0 87.1 mA PB mode

Fig.1

Regulator voltage

VREG 2.38 2.53 2.68 V

Fig.1

[Sync-gate block]

VCO free-running frequency

fosc 13.8 15.625 17.4 kHz

Fig.1

Capture range "H"

CRH 1.8 — — kHz Delayed sync input

Fig.1

Capture range "L"

CRL

— — – 1.8 kHz Delayed sync input

Fig.1

Lock range "H"

LRH 2.2 — — kHz Delayed sync input

Fig.1

Lock range "L"

LRL

— — – 2.2 kHz Delayed sync input

Fig.1

[REC system]

RECOUT output amplitude

VREC 187.5 250.0 312.5 mVP-P Cyan level (cyan frequency)

Fig.1

Unwanted spectrum rejection

4MHz component

HDR4

—

— – 25

dB V1 = 170mVP-P, 4.286MHz

Fig.1

3MHz component

HDR3

—

— – 25

dB V1 = 170mVP-P, 4.286MHz

Fig.1

2MHz component

HDR2

—

— – 25

dB V1 = 170mVP-P, 4.286MHz

Fig.1

Output switch voltage gain

GRS – 1

0

1

dB V30 = 0.3VP-P, 627kHz

Fig.1

Output switch frequency characteristic

fRS

–1

0

1

dB V30 = 0.3VP-P, 5MHz / 100kHz

Fig.1

Output switch crosstalk 1

CTR1

— – 60

—

dB V18 = 25mVP-P, 1.0715MHz

Fig.1

Output switch crosstalk 2

CTR2

— – 60

—

dB V30 = 0.3VP-P, 627kHz

Fig.1

[PB system]

PB output amplitude

VPB 202.5 270.0 337.5 mVP-P Cyan level (cyan frequency)

Fig.1

Unwanted spectrum rejection

3MHz component

HDP3

—

— – 35

dB V18 = 25mVP-P, 1.0715MHz

Fig.1

2MHz component

HDP2

—

— – 35

dB V18 = 25mVP-P, 1.0715MHz

Fig.1

1MHz component

HDP1

—

— – 35

dB V18 = 25mVP-P, 1.0715MHz

Fig.1

Output switch voltage gain 1

GP1

5

6

7

dB V8 = 0.3VP-P, 4.3MHz

Fig.1

Output switch frequency characteristic 1

fP1

–1

0

1

dB V8 = 0.3VP-P, 5MHz / 100kHz

Output switch crosstalk 1

CTP1

— – 60

—

dB V8 = 0.3VP-P, 4.3MHz

Fig.1

Fig.1

Output switch voltage gain 2

GP2 – 1

0

1

dB V14 = 0.3VP-P, 4.43MHz

Fig.1

Output switch frequency characteristic 2

fP2

–1

0

1

dB V14 = 0.3VP-P, 5MHz / 100kHz

Fig.1

Output switch crosstalk 2

CTP2

— – 60

—

dB V14 = 0.3VP-P, 4.43MHz

Fig.1

RECIN crosstalk

CTRIN — – 40 – 30 dB V1 = 0.5VP-P, 4.286MHz

Fig.1

[Control system]

High level voltage

Low level voltage

∗ BA7207AK pin numbers are given in brackets.

Pins 14, 17, 19, 21 and 30

VH

2.5 —

—

V

(Pins 13,18,21,23 and 35)∗

VL

—

—

1.5

V

Pins 14, 17, 19, 21 and 30

(Pins 13,18,21,23 and 35)∗

Fig.1

Fig.1

7

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