ADL52460 pages

3 GHz Variable Gain LNA with Integrated
½ W Driver Amplifier
ADL5246

Data Sheet
FEATURES

GENERAL DESCRIPTION

RF output frequency range: 0.6 GHz to 3 GHz
Output IP3: 37 dBm at 2.2 GHz
Output P1dB: 28 dBm at 2.2 GHz
Noise figure of input amplifier: 1 dB at 2.2 GHz
Maximum gain: 31.5 dB at 2.2 GHz
Voltage variable attenuation range: 45 dB
0 V to 3.3 V attenuation control range
Integrated bypass switch for low noise VGA
Matched 50 Ω input stage
3.3 V to 5 V single supply
32-lead, 5 mm × 5 mm LFCSP package

The ADL5246 is a high performance, low noise variable gain
amplifier (VGA) optimized for multistandard base station
receivers and point to point receive (Rx) and transmit (Tx)
applications. The low noise figure and excellent linearity
performance allow the device to be used in a variety of
applications.
The device consists of a low noise amplifier, a high linearity
VGA, and a ½ W output driver stage. The variable attenuator
networks are optimized to provide high linearity performance
over the 45 dB gain control range. Gain is set using a unipolar
control voltage from 0 V to 3.3 V. The output stage of the
ADL5246 is an externally tuned ½ W driver amplifier, which
allows the device to be optimized anywhere between the 0.6 GHz
to 3 GHz range, with an average tuning bandwidth of 200 MHz
wide. An external filter can be used between the VGA and the
final driver amplifier. The ADL5246 can be biased between
3.3 V and 5 V to trade-off between performance and power
consumption.

APPLICATIONS
Multistandard radio receivers
Point to point Rx and Tx
Instrumentation
Military and aerospace

The ADL5246 is fabricated on an advanced GaAs process. The
device is available in a 32-lead, RoHS-compliant, 5 mm × 5 mm
LFCSP and thermally rated to operate over the −40°C to +105°C
temperature range.

RFIN2

VGAIN1

VSW1

VSW1

VGAIN2

RFOUT2

RFIN3

VPOS1

VPOS2

FUNCTIONAL BLOCK DIAGRAM

30

15

6

13

16

18

21

11

28

RFOUT1 32

AMP3

AMP1

VVA1

VVA2

2

ADL5246

AMP2
4

5

7

8

9

12 14 17 19 22

NIC

1

EP

3

10 20 23 24 25 27 29 31

GND

12233-001

RFIN1

26 RFOUT3

Figure 1.

Rev. 0

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