upc1658g Renesas Electronics Corporation., upc1658g Datasheet - Page 2

• Manufacturer Part Number: upc1658g
• Description: Low Noise, High Frequency Si Mmic Amplifier
• Manufacturer: Renesas Electronics Corporation.

PIN CONNECTIONS
PIN EXPLANATION
2
Pin No.
1
2
3
4
5
6
7
8
Pin Name
Test Point
Test Point
Bypass
Output
GND
Input
V
CC
8
1
(Top View)
7
2
Ground pin. This pin should be connected to
system ground with minimum inductance.
Ground pattern on the board should be formed
as possible. All the ground pins must be
connected together with wide ground pattern to
decrease impedance difference.
Test Point pin. The collector current of Q
Q
external resistance between this pin and GND
or by shorting this pin to GND. By increasing
the collector current of Q
improves and the IC can operate as a low-
distortion amplifier.
Signal output pin. This pin must be coupled to
signal source with capacitor for DC cut.
Power supply pin. This pin should be externally
equipped with bypass capacitor to minimize its
impedance.
By connecting this pin to the power supply
through an appropriate external resistance or by
shorting this pin directly to the power supply,
the gain can be adjustable (when using pin 2,
short the pin 5 to the power supply).
Signal input pin. Through negative feedback
from output pin with an external circuit, the IC
operates as a wideband amplifier.
Emitter bypass pins of Q
to GND with a capacitor.
3
6
3
can be varied by connecting an appropriate
5
4
Function and Applications
Data Sheet P11120EJ3V0DS00
1
3
, the output level
. Bypass these pins
2
and
Pin No.
Bypass
Bypass
1
2
3
4
5
6
7
8
Input
6
7
8
R1
Internal Equivalent Circuit
R2
Pin Name
Test Point
Test Point
Bypass
Bypass
Output
GND
Input
V
R5
CC
Q1
R3
R4
R6
Q2
R8
Q3
R7
PC1658G
4 V
5 Test point
3
2
1
Output
Test point
GND
CC