50 MHz to 6 GHz

RF/IF Gain Block

ADL5542

Rev. A

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FEATURES

Fixed gain of 20 dB

Operation up to 6 GHz

Input/output internally matched to 50 Ω

Integrated bias control circuit

Output IP3

46 dBm at 500 MHz

40 dBm at 900 MHz

Output 1 dB compression: 20.6 dB at 900 MHz

Noise figure of 3 dB at 900 MHz

Single 5 V power supply

Small footprint 8-lead LFCSP

Pin compatible with 15 dB gain ADL5541

1 kV ESD (Class 1C)

FUNCTIONAL BLOCK DIAGRAM

1

RFIN

8

RFOUT

2

GND

7

GND

3

GND

6

GND

4

CB

5

VPOS

INPUT

MATCH

OUTPUT

MATCH

BIAS CONTROL

ADL5542

Figure 1.

GENERAL DESCRIPTION

The ADL5542 is a broadband 20 dB linear amplifier that

operates at frequencies up to 6 GHz. The device can be used in

a wide variety of CATV, cellular, and instrumentation equipment.

The ADL5542 provides a gain of 20 dB that is stable over

frequency, temperature, power supply, and from device to

device. The device is internally matched to 50 Ω with an input

return loss of 10 dB or better, up to 6 GHz. Only input/output

ac coupling capacitors, power supply decoupling capacitors, and

an external inductor are required for operation.

The ADL5542 is fabricated on an InGaP HBT process and has

an ESD rating of 1 kV (Class 1C). The device is packaged in a

3 mm × 3 mm LFCSP that uses an exposed paddle for excellent

thermal impedance.

The ADL5542 consumes 93 mA on a single 5 V supply and is

fully specified for operation from −40°C to +85°C.

A fully populated RoHS-compliant evaluation board is

available.

The ADL5541 is a companion part that offers a gain of 15 dB in

a pin-compatible package.