ADRF6520ACPZ - ADI

The pictures are for reference only, and the specific specifications can be found in the product manual.

Part No

ADRF6520ACPZ
Manufacturer

ADI
ChipWorker Part#

CW67302837
Package

LFCSP EP-32
Description

Variable Gain Amplifier 32Pin LFCSP EP Tray
Documentation

Datasheet

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ADRF6520ACPZ Specifications

Attribute	Attribute Value

Part Number	ADRF6520ACPZ
Manufacturer	ADI
ChipWorker Part#	CW67302837
Documentation	Datasheet
Number of Pins	32 Pin
Case/Package	LFCSP EP-32
Frequency	2 GHz
Supply Current	425 mA
Gain	53 dB
Test Frequency	2 GHz
Operating Temperature (Max)	85 ℃
Operating Temperature (Min)	-40 ℃
Supply Voltage	3.3 V
	expand all
Product Lifecycle Status	Pre-Release
Packaging	Tray
RoHS	RoHS Compliant
Lead-Free Status	Contains Lead

Product Description

Product Details
The ADRF6520 is a matched pair of fully differential low noise and low distortion programmable filters and variable gain amplifiers (VGAs). Each channel is capable of rejecting large, out of band interferers while reliably boosting the wanted signal, thus reducing the bandwidth and resolution requirements on the analog-to-digital converters (ADCs). The excellent matching between channels and their high spurious-free dynamic range over all gain and bandwidth settings make the ADRF6520 ideal for quadrature-based (IQ) communication systems with dense constellations, multiple carriers, and nearby interferers. The filter corners, enable, and dc offset correction loop enable are all programmable via a serial peripheral interface (SPI).
The first VGA that precedes the filters offers 30 dB of continuous gain control with a maximum gain of 18 dB and sets a differential input impedance of 100 Ω. The filters provide a four-pole Butterworth response with −1 dB corner frequencies: 36 MHz, 72 MHz, 144 MHz, 288 MHz, 432 MHz, 576 MHz, and 720 MHz. For operation beyond 720 MHz, the filter can be disabled and completely bypassed, thereby extending the −1 dB bandwidth up to 1.25 GHz. A wideband rms detector is available to monitor the signal at the filter inputs. A fixed gain amplifier of 6 dB immediately follows the filter. The postfilter VGA provides 30 dB of continuous gain control with a maximum gain of 12 dB. The output buffers offer an additional 18 dB of gain and provide a differential output impedance of 20 Ω. The output buffers are capable of driving 1.5 V p-p into 100 Ω loads at better than 55 dBc nominal for the third-order intermodulation distortion (IMD3). Independent, built in, dc offset correction loops for each channel can be disabled via the SPI if fully dc-coupled operation is desired. The high-pass corner frequency is determined by external capacitors on the CHP1 and CHP2 pins and the postfilter VGA gain.
The ADRF6520 operates from a 3.15 V to 3.45 V supply and consumes a maximum supply current of 425 mA. When fully disabled, it consumes ≤10 mA. The ADRF6520 is fabricated in an advanced silicon-germanium BiCMOS process and is available in a 32-lead, exposed pad LFCSP. Performance is specified over the −40°C to +85°C temperature range.
Applications
Point-to-point and point-to-multipoint radios
Baseband IQ receivers
Diversity receivers
ADC drivers
Instrumentation
Medical
### Features and Benefits
Matched VGAs and programmable filters
Maximum gain: 53 dB
Continuous gain control range: 60 dB
Filter bypass mode I/Q bandwidth
±1 dB gain flatness: >1250 MHz
4-pole Butterworth filter I/Q bandwidth: 36 MHz to 720 MHz RMS detector
IMD3: <−55 dBc for 1.5 V p-p composite output
HD2, HD3: <−55 dBc for 1.5 V p-p output
Noise figure: 10.5 dB at maximum gain
NF < 11 dB over 12 dB of VGA2 gain backoff
100 Ω differential input, low impedance output
Optional dc output offset correction
SPI-programmable filter corners
Single 3.3 V supply operation with power-down feature

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