■ GENERAL DESCRIPTION
The NJM2278 is a narrow band, small signal amplifier, especially designed for use as the final RF amplifier in 300MHz / 400MHz 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.

■ 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

■ APPLICATIONS
   300/400MHz Band Applications, 400MHz Industrial Radios, Digital Communication Systems