NTE739 View Datasheet(PDF) - NTE Electronics

Part Name

Description

Manufacturer

NTE739

Integrated Circuit Dual Doubly Balanced Chroma Demodulator with RGB Matrix and Chroma Driver Stages

NTE Electronics 

Electrical Characteristics (Cont’d):

Parameter

Dynamic Characteristics

Detected Output Voltage

+ (B–Y)

– (B–Y)

Chroma Input Voltage

Luminance Input Resistance

Luminance Gain from Pin3 to Outputs

Blanking Input Resistance

Detected Output Voltage

G–Y Output

R–Y Output

Relative Output Phase

B–Y to R–Y Output

B–Y to G–Y Output

Demodulator Unbalance Voltage

Residual Carrier and Harmonics Output

Voltage

Reference Input Resistance

Reference Input Capacitance

Chroma Input Resistance

Chroma Input Capacitance

(VCC = 24V, Vref = 1.0V(p–p), RL = 3.3kΩ, TA = +25°C unless

otherwise specified)

Test Conditions

Min Typ Max Unit

Note 1

B–Y Output = 5VP–P, Note 1

At DC

At 5MHz

1Vdc

0Vdc

4.0 5.0 –

4.0 5.0 –

– 0.36 0.7

100 – –

– 0.95 –

– 0.5 –

– 1.1 –

– 7.5 –

V(pk)

V(pk)

VP–P

kΩ

kΩ

kΩ

Adjust B–Y Output to 5VP–P,

Luminance Voltage = 23V

0.75 1.0 1.25 VP–P

3.5 3.8 4.2 VP–P

B–Y Output = 5VP–P,

Luminance Voltage = 23V

No Chroma Input Voltage and Nominal

Reference Signal Input Voltage

With Input Signal Voltage,

Nominal Reference Signal Voltage,

and B–Y Output = 5VP–P

101 106 111

248 256 264

– 100 500

deg

deg

VP–P

–

– 1.0 VP–P

– 2.0 – kΩ

– 6.0 – pF

– 2.0 – kΩ

– 2.0 – pF

Note 1. With Normal Reference Input Signal Voltage, Adjust Chroma Input Signal Voltage to

1.2V(p–p).

Note 2. With Normal Reference Input Signal Voltage, Adjust Chroma Input Signal Voltage Until the

Blue Output Voltage = 5V(p–p). The Chroma Input Voltage at this point should be equal to

or less than 0.7V(p–p).

Pin Connection Diagram

G – Y Output 1

R – Y Output 2

Luminance Input 3

B – Y Output 4

DC Ref Input 5

Blanking Input 6

GND 7

14 VCC

13 B – Y Ref Input

12 R – Y Ref Input

11 N.C.

10 Chroma DC Input

9 R – Y Chroma Input

8 B – Y Chroma Input

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