Wide Dynamic Range, High Speed,

Digitally Controlled VGA

Data Sheet

ADL5201

Rev. C

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FEATURES

−11.5 dB to +20 dB gain range

0.5 dB ± 0.1 dB step size

150 Ω differential input and output

7.5 dB noise figure at maximum gain

OIP3 > 50 dBm at 200 MHz

−3 dB upper frequency bandwidth of 700 MHz

Multiple control interface options

Parallel 6-bit control interface (with latch)

Serial peripheral interface (SPI) (with fast attack)

Gain up/down mode

Wide input dynamic range

Low power mode option

Power-down control

Single 5 V supply operation

24-lead, 4 mm × 4 mm LFCSP package

APPLICATIONS

Differential ADC drivers

High IF sampling receivers

High output power IF amplification

Instrumentation

FUNCTIONAL BLOCK DIAGRAM

+20dB

ADL5201

SPI WITH FA,

PARALLEL WITH LATCH,

UP/DOWN INTERFACE

VPOS GND PWUP

0dB TO 31.5dB

VIN+

MODE0,

MODE1

VIN–

PM

VOUT+

VOUT–

150Ω

150Ω

LOGIC

Figure 1.

GENERAL DESCRIPTION

The ADL5201 is a digitally controlled, variable gain, wide band-

width amplifier that provides precise gain control, high IP3, and

low noise figure. The excellent distortion performance and high

signal bandwidth make the ADL5201 an excellent gain control

device for a variety of receiver applications. The ADL5201 also

incorporates a low power mode option that lowers the supply

current.

For wide input dynamic range applications, the ADL5201 provides

a broad 31.5 dB gain range with 0.5 dB resolution. The gain is

adjustable through multiple gain control interface options: parallel,

serial peripheral interface, and up/down.

Incorporating proprietary distortion cancellation techniques,

the ADL5201 achieves an output IP3 of greater than 47 dBm at

frequencies approaching 200 MHz for most gain settings.

The ADL5201 is powered on by applying the appropriate logic

level to the PWUP pin. The quiescent current of the ADL5201

is typically 80 mA in low power mode. When configured in high

performance mode for more demanding applications, the quiescent

current is 110 mA. When powered down, the ADL5201 consumes

less than 7 mA and offers excellent input-to-output isolation.

The gain setting is preserved during power-down.

Fabricated on an Analog Devices, Inc., high speed SiGe process,

the ADL5201 provides precise gain adjustment capabilities with

good distortion performance and low phase error. The ADL5201

amplifier comes in a compact, thermally enhanced, 24-lead,

4 mm × 4 mm LFCSP package and operates over the temperature

range of −40°C to +85°C.