TDA8708 datasheet(6/24 Pages) PHILIPS

6 / 24 page

1996 Nov 26

Philips Semiconductors

Product speciﬁcation

Video analog input interface

TDA8708B

CHARACTERISTICS

VCCA =V22 to V23 = 4.5 to 5.5 V; VCCD =V6 to V8 = 4.5 to 5.5 V; VCCO =V7 to V8 = 4.2 to 5.5 V; AGND and DGND

shorted together; VCCA to VCCD = −0.5 to +0.5 V; VCCO to VCCD = −0.5 to +0.5 V; VCCA to VCCO = −0.5 to +0.5 V;

Tamb = 0 to +70 °C; typical readings taken at VCCA =VCCD =VCCO = 5 V and Tamb =25 °C; unless otherwise speciﬁed.

SYMBOL

PARAMETER

CONDITIONS

MIN.

TYP.

MAX.

UNIT

Supplies

VCCA

analog supply voltage

4.5

5.0

5.5

VCCD

digital supply voltage

4.5

5.0

5.5

VCCO

TTL output supply voltage

4.2

5.0

5.5

ICCA

analog supply current

−

ICCD

digital supply current

−

ICCO

TTL output supply current

TTL load (see Fig.8)

−

Video ampliﬁer inputs

VIN0 TO VIN2 INPUTS

VI(p-p)

input voltage (peak-to-peak value)

AGC load with external

capacitor; note 1

0.6

−

1.5

Z

i

input impedance

fi = 6 MHz

−

Ω

input capacitance

fi = 6 MHz

−

I0 AND I1 TTL INPUTS (see Table 1)

VIL

LOW level input voltage

−

0.8

VIH

HIGH level input voltage

2.0

−

VCCD

IIL

LOW level input current

VI = 0.4 V

−400

−−

µA

IIH

HIGH level input current

VI = 2.7 V

−−

µA

GATE A AND GATE B TTL INPUTS (see Figs 4 and 5)

VIL

LOW level input voltage

−

0.8

VIH

HIGH level input voltage

2.0

−

VCCD

IIL

LOW level input current

VI = 0.4 V

−400

−−

µA

IIH

HIGH level input current

VI = 2.7 V

−−

µA

pulse width

see Fig.5

−−

µs

AGC INPUT (PIN 25)

V25(min)

AGC voltage for minimum gain

−

2.8

−

V25(max)

AGC voltage for maximum gain

−

4.0

−

AGC output current

see Table 2

CLAMP INPUT (PIN 24)

V24

clamp voltage for code 128 output

−

3.5

−

I24

clamp output current

see Table 3

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