20 MHz to 6 GHz

RF/IF Gain Block

Data Sheet

ADL5541

FEATURES

Fixed gain of 15 dB

Operation up to 6 GHz

Input/output internally matched to 50 Ω

Integrated bias control circuit

Output IP3

44 dBm at 500 MHz

40 dBm at 900 MHz

Output 1 dB compression: 19.7 dBm at 900 MHz

Noise figure of 3.5 dB at 900 MHz

Single 5 V power supply

Small footprint 8-lead LFCSP

Pin compatible with 20 dB gain ADL5542

1 kV ESD (Class 1C)

FUNCTIONAL BLOCK DIAGRAM

GND

GND

RFIN

RFOUT

GND

GND

CB

VPOS

INPUT

MATCH

OUTPUT

MATCH

BIAS CONTROL

ADL5541

1

2

3

4

8

7

6

5

Figure 1.

GENERAL DESCRIPTION

The ADL5541 is a broadband 15 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 ADL5541 provides a gain of 15 dB, which 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 ADL5541 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 ADL5541 consumes 90 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 ADL5542 is a companion part that offers a gain of 20 dB

in a pin-compatible package.

Rev. B

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