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UPC2800AGR Datasheet

  • UPC2800AGR

  • PREAMPLIFIER FOR INFRARED REMOTE CONTROL

  • 86.33KB

  • 12頁(yè)

  • NEC   NEC

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碌
PC2800A
Pin
No.
7
Symbol
IN
鈥?/div>
Pin Name
First-stage gain
setting pin
Internal Equivalent Circuit
Function
Reverse input pin of the first-stage
amplifier.
Connect a capacitor (0.01
碌
F) 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 k鈩? (refer to
A
V
vs. R
1
Characteris-
2.5 V
90 k鈩?/div>
ABLC
7
8
IN
+
To limiter
circuit
Signal input pin
8
tics
in
CHARACTERISTIC CURVE).
This pin has an internal impedance of
90 k鈩?(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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