20 MHz to 500 MHz

IF Gain Block

ADL5531

Rev. 0

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FEATURES

Fixed gain of 20 dB

Operation up to 500 MHz

Input/output internally matched to 50 Ω

Integrated bias control circuit

Output IP3

41 dBm at 70 MHz

39 dBm at 190 MHz

Output 1 dB compression: 20.6 dB at 190 MHz

Noise figure: 2.5 dB at 190 MHz

Single 5 V power supply

Small footprint 8-lead LFCSP

ADL5532 15 dB gain version

ADL5534 20 dB gain dual-channel version

±2 kV ESD (Class 2)

FUNCTIONAL BLOCK DIAGRAM

5CLIN

8NC

NC

NC = NO CONNECT

4

6NC

RFIN 2

7RFOUT

NC 3

ADL5531

BIAS

CONTROL

LINEARIZER

NC 1

Figure 1.

GENERAL DESCRIPTION

The ADL5531 is a broadband, fixed-gain, linear amplifier that

operates at frequencies up to 500 MHz. The device can be used

in a wide variety of equipment, including cellular, satellite,

broadband, and instrumentation equipment.

The ADL5531 provides a gain of 20 dB, which is stable over

frequency, temperature, power supply, and from device to device.

This amplifier is single-ended and internally matched to 50 Ω.

Only input/output ac coupling capacitors, power supply decoupling

capacitors, and external inductors are required for operation.

The ADL5531 is fabricated on a GaAs HBT process and has an

ESD rating of ±2 kV (Class 2). The device is packaged in an 8-lead

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

thermal impedance.

The ADL5531 consumes 100 mA on a single 5 V supply and is

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

The 15 dB gain version, ADL5532, and the dual-channel 20 dB

gain version, ADL5534, are also available.