TSH690 is a wide band RF amplifier, designed in advanced bipolar process. At 450 MHz, it features 28dB gain and +13.5dBm (20 mW) out- put power at 3V. At 900 MHz, it features 23 dB gain and +15.5 dBm (35 mW) output power at 3V.
The TSH690 is a wide‑band RF amplifier covering 40 MHz to 1 GHz, offering up to 28 dB gain at 450 MHz and 21 dB gain at 900 MHz with adjustable output power above 20 mW. It can be biased for Class A, A‑B, or power‑down operation via the Vbias pin, making it suitable for ISM transmitters, cellular phone drivers, remote controls, and other wide‑band applications.
The handbook includes electrical characteristics, absolute maximum ratings, pin connections, package information, schematic diagrams, dissipation calculations, and detailed PCB layout recommendations. Mechanical dimensions of the plastic micropackage (SO) and ordering information are also provided.
| Supply voltage range | 1.5 V to 5 V |
|---|---|
| Maximum output power | >20 mW (adjustable) |
| Gain at 450 MHz | 28 dB |
| Gain at 900 MHz | 21 dB |
| Bias pin function | Adjust amplification class |
| Absolute maximum supply voltage | 5.5 V |
| RF input power rating | +10 dBm |
| RF output power rating | +21 dBm |
The amplifier operates from 1.5 V up to 5 V.
Output power is adjusted via the bias pin (Vbias), which sets the amplification class and current consumption.
The TSH690 provides about 28 dB gain at 450 MHz.
It is supplied in a plastic micropackage (SO) and also available in tape‑and‑reel (DT).