10 kHz to 10 GHz, Wideband, Low Noise Amplifier

The ADL8122 is a wideband low noise amplifier (LNA) that operates from 10 kHz to 10 GHz. Typical gain and noise figure are 17 dB and 2 dB, respectively, from 2 GHz to 6 GHz. Output power for 1 dB compression (OP1dB), output third-order intercept (OIP3), and output second-order intercept (OIP2) are 20 dBm, 33.5 dBm, and 37 dBm, respectively, from 2 GHz to 6 GHz. The nominal quiescent current (IDQ), which can be adjusted, is 95 mA from a 5 V supply voltage (VDD). The internally matched, DC-coupled RF input and output pins require external AC coupling capacitors along with a bias inductor on RFOUT. In addition, the RF input is biased through an external inductor connected between the VBIAS pin and the RFIN pin.

The ADL8122 is fabricated on a pseudomorphic, high electron mobility transistor (pHEMT) process. The device is housed in a RoHS-compliant, 2 mm × 2 mm, 8-lead LFCSP and is specified for operation from −55°C to +125°C.

APPLICATIONS

* Telecommunications

* Instrumentation

* Radar

* Electronic warfare

* Single positive supply (self biased)

* Resistor-programmable bias setting

* Positive gain slope vs. frequency

* Wideband operation: 10 kHz to 10 GHz

* Extended operating temperature range: −55°C to +125°C

* RoHS-compliant, 2 mm × 2 mm, 8-lead LFCSP