UPC2800 Просмотр технического описания (PDF) - NEC => Renesas Technology

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Компоненты Описание

производитель

UPC2800

PREAMPLIFIER FOR INFRARED REMOTE CONTROL

NEC => Renesas Technology 

µPC2800A

Pin

Symbol

No.

Pin Name

7

IN– First-stage gain

setting pin

8

IN+ Signal input pin

Internal Equivalent Circuit

Function

90 kΩ

ABLC

7

8

2.5 V

To limiter

circuit

Reverse input pin of the first-stage

amplifier.

Connect a capacitor (0.01 µF) to

prevent direct current so that the first-

stage amplifier operates as an AC

amplifier. The gain of the amplifier can

be adjusted by an external resistor (0 to

1 kΩ) (refer to AV vs. R1 Characteris-

tics in CHARACTERISTIC CURVE).

This pin has an internal impedance of

90 kΩ (TYP.) and can be directly

connected to a PIN photodiode.

Because this is the input pin of a high-

sensitivity amplifier, exercise care that

noise is not superimposed on this pin.

Keep the wiring length of the cathode of

the PIN photodiode as short as possi-

ble.

4

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