NJM2278 Datasheet, PDF (1/13 Pages) New Japan Radio – 300/400MHz Band 20mW Power Amplifier

NJM2278
300/400MHz Band 20mW Power Amplifier
! GENERAL DESCRIPTION
The NJM2278 is a narrow band, small signal amplifier, especially
designed for use as the final RF amplifier in 300MHz / 400MHz
! PACKAGE OUTLINE
band transmitter. The amplifier produces an output power of up to
20mW at the desired frequency, which frequency and power are
adjusted by external input and output matching circuits. It also
features excellent thermal stability of power gain.
NJM2278F1
! APPLICATIONS
300/400MHz Band Applications, 400MHz Industrial Radios, Digital Communication Systems
! FEATURES (@400MHz, 2.7V)
# Low Operating Voltage
2V to 5.5V
# Low Operating Current
20 mA @ 0dBm input
# Power Gain
17dB @ - 30dBm input
13dB @0dBm input
# Saturation Output
14dBm @3dBm input
# Variable Power Gain Control 4dB
# Excellent Power Gain Thermal Stability
Gain Flatness ±1dB (- 40°C to + 85°C)
# RF IN Input Impedance
70 Ω
# RF OUT Output Impedance 110 Ω
# Recommended Operating Frequency 300MHz to 500MHz
# Bipolar Technology
# Package Outline
SOT23-6 (MTP6) 2.8mm x 2.9mm
Note: For the signals at frequencies other than recommended operating frequency range of 300 to 500MHz,
please refer to the “TYPICAL CHARACTERISTICS”.
! PIN CONFIGULATION
1
2
3
Orientation Mark
6
5
4
Top View
Pin Function
1. RF IN
2. GND
3. EMI
4. RF OUT
5. V+
6. IREF
! Function Block Diagram
RF IN
1
GND
2
EMI
3
Regulator
Bias
IREF
6
V+
5
RF OUT
4
Ver.2008-08-22
-1-