1.0 GHz DGA with 30 dB Range and

1 dB Step Size

Data Sheet

ADL5206

Rev. 0

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FEATURES

Digitally controlled VGA

2 dB to 32 dB gain range

1 dB gain step size

100 Ω differential input resistance

10 Ω differential output resistance

Noise figure: 5.1 dB at 300 MHz, 5 V supply, and

maximum gain

OIP3 at maximum gain

39.4 dBm at 300 MHz at 5 V supply

38.1 dBm at 700 MHz at 5 V supply

Gain step accuracy: ±0.2 dB

−3 dB bandwidth at 32 dB: 1.0 GHz typical at 5 V supply

Multiple control interface options

Parallel 5-bit control interface with latch

3- and 4-wire SPI with fast attack

Gain step-up and step-down interface

Wide input dynamic range

Power-down control

Single 3.3 V or 5 V supply operation

112 mA quiescent current at 5 V supply

20-lead, 4 mm × 4 mm LFCSP

APPLICATIONS

Differential ADC drivers

High intermediate frequency (IF) sampling receivers

High output power IF amplification

DOCSIS FDx upstream amplifier

Instrumentation

FUNCTIONAL BLOCK DIAGRAM

10Ω

100Ω

32dB

TO

2dB

VPOS

VIN–

MODEx

VIN+

SPI/PARALLEL

INTERFACE

VOUT+

VOUT–

ADL5206

LOGIC

PWUP

EPAD

Figure 1.

GENERAL DESCRIPTION

The ADL5206 is a wide bandwidth, variable gain amplifier (VGA)

with digital control (also known as a digital gain amplifier (DGA))

that provides precise gain control, high output third-order

intercept (OIP3), and low noise figure over the entire gain

range. The excellent OIP3 performance of 39.4 dBm (at 300MHz,

5 V supply, and maximum gain) makes the ADL5206 an excellent

gain control device for a variety of receiver applications.

For wide input dynamic range applications, the ADL5206

provides a broad 2 dB to 32 dB gain range with a 1 dB step size.

The gain is adjustable through multiple gain control and interface

options: parallel, serial peripheral interface (SPI), or gain step-up

and step-down controls.

The ADL5206 can be powered up independently by applying

the appropriate logic level to the PWUP pin. The quiescent

current of the ADL5206 is typically 112 mA with a 5 V supply.

When disabled, the ADL5206 consumes only 8 mA and offers

excellent input to output isolation. The gain setting is preserved

when the device is disabled.

Fabricated on the Analog Devices, Inc., high speed, silicon

germanium (SiGe), bipolar complementary metal-oxide

semiconductor (BiCMOS) process, the ADL5206 provides

precise gain adjustment capabilities with good distortion

performance. The ADL5206 amplifier comes in a compact,

thermally enhanced, 4 mm × 4 mm, 20-lead LFCSP and

operates over the temperature range of −40°C to +85°C.

Note that throughout this data sheet, multifunction pins, such

as CS/GS1/D3, are referred to by the entire pin name or by a

single function of the pin.