SPA-1218 is a 1960MHz 1 watt power amplifier produced by Stanford Microdevices. The device uses high-reliability GaAs HBT technology and has high linearity performance, with a maximum of +48dBm OIP3. SPA-1218 uses low-cost surface-mountable plastic packaging and is suitable for PCS systems and multi-carrier applications.
The SPA-1218 is a high‑efficiency GaAs HBT power amplifier offered in a low‑cost surface‑mountable plastic package. It features on‑chip active bias control, high linearity (+48 dBm OIP3 typ.) and a wide operating frequency range for PCS and multi‑carrier applications.
The device includes a bias network accessed via the Vbias pin, requires external DC blocking capacitors on RF inputs/outputs, and provides detailed pin functions, absolute maximum ratings, and package dimensions for board layout. Typical specifications include 12 dB small‑signal gain, 29.5 dBm output power at 1 dB compression, and a supply current of 750 mA at 5 V.
| Frequency of Operation | 1930‑1990 MHz |
|---|---|
| Small Signal Gain | 12.0 dB |
| Input VSWR | 1.5:1 |
| Output Third‑Order Intercept Point (OIP3) | +48 dBm typ. |
| Device Current (Ic) | 320 mA |
| Thermal Resistance (junction‑lead) | 40 °C/W |
| Supply Current (Ip) | 750 mA |
| Device Voltage (Vd) | 6.0 V |
| Power Dissipation | 40 W |
| Operating Temperature Range | -40 °C to +85 °C |
The SPA-1218 operates from 1930 MHz to 1990 MHz.
The typical small‑signal gain is 12.0 dB.
The device includes an on‑chip active bias control network accessed via the Vbias pin.