Data Sheet

ADL8122

10 kHz to 10 GHz, Wideband, Low Noise Amplifier

Rev. 0

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FEATURES

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Single positive supply (self biased)

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Resistor-programmable bias setting

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Positive gain slope vs. frequency

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Wideband operation: 10 kHz to 10 GHz

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

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

APPLICATIONS

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Telecommunications

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Instrumentation

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Radar

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Electronic warfare

GENERAL DESCRIPTION

The ADL8122 is a wideband low noise amplifier (LNA) that oper-

ates 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.

FUNCTIONAL BLOCK DIAGRAM

Figure 1. Functional Block Diagram