UPC2798GR データシートの表示（PDF） - NEC => Renesas Technology

部品番号

コンポーネント説明

メーカー

UPC2798GR

IF DOWN CONVERTOR IC FOR DIGITAL CATV

NEC => Renesas Technology 

PIN EXPLANATIONS

Pin No. Symbol

11 OUT2

11 OUT1

Pin Voltage

(V, TYP.)

( ) is

value at

Vcc2 = 9 V.

Explanation

2.5

(4.7)

Output pin of video amplifier.

In case of RL = 1 kΩ, differential output

voltage equal 3 VP-P.

OUT1 and INA are same phase.

OUT2 and INB are same phase.

2.5

(4.7)

µPC2798GR

Equivalent Circuit

13

12

11

REG

13 Vcc2

5 to 9

Power supply pin of video amplifier.

Must be connected bypass capacitor to

minimize ground impedance.

14 INB

2.5

(4.1)

Signal input pin of video amplifier.

This pin is high impedance.

17 15

13

15 INA

2.5

(4.1)

16 G1B

17 G1A

1.7

(3.3)

1.7

(3.3)

Gain control pin of video amplifier.

Maximum gain at G1A-GIB = short.

Minimum gain at G1A-G1B = open.

Gain is able to adjust by inserting arbitrary

resistor between 16pin and 17pin.

REG

14 16

18 MIX

OUT1

3.7

Output pin of mixer.

This output pin features low-impedance

because of its emitter-follower output port.

19 MIX

3.7

REG

OUT2

20 GND

4

0.0

Ground pin.

Must be connected to the system ground

with minimum inductance.

Ground pattern on the board should be

formed as wide as possible.

Data Sheet P11998EJ3V0DS00

4

18

19

Share Link: