Overview
The ADRF6520ACPZ from Analog Devices Inc. is a highly advanced RF component designed for sophisticated radio frequency applications. It features a matched pair of fully differential low noise and low distortion programmable filters and variable gain amplifiers (VGAs). This device is particularly suited for quadrature-based (IQ) communication systems, especially those with dense constellations, multiple carriers, and nearby interferers. The ADRF6520ACPZ operates within a frequency range that can be extended up to 1.25 GHz, making it versatile for various wireless communication systems.
Key Specifications
| Parameter | Value |
|---|---|
| Manufacturer | Analog Devices Inc. |
| Part Number | ADRF6520ACPZ |
| Package | 32-Lead LFCSP (5mm x 5mm x 0.75mm w/ EP) |
| Supply Voltage | 3.15 V to 3.45 V |
| Maximum Supply Current | 425 mA |
| Frequency Range | Up to 1.25 GHz |
| Filter Response | Four-pole Butterworth response |
| Filter Corner Frequencies | 36 MHz, 72 MHz, 144 MHz, 288 MHz, 432 MHz, 576 MHz, 720 MHz |
| VGA Gain Control | 30 dB continuous gain control (max gain: 18 dB pre-filter, 12 dB post-filter) |
| Output Buffers | Additional 18 dB gain, differential output impedance of 20 Ω |
| Operating Temperature | −40°C to +85°C |
Key Features
- Matched pair of fully differential low noise and low distortion programmable filters and VGAs.
- Programmable filter corners, enable, and dc offset correction loop via SPI interface.
- Wideband rms detector to monitor signal at filter inputs.
- Independent dc offset correction loops for each channel.
- High spurious-free dynamic range over all gain and bandwidth settings.
- Capable of driving 1.5 V p-p into 100 Ω loads with better than 55 dBc nominal for the third-order intermodulation distortion (IMD3).
- Fabricated in advanced silicon-germanium BiCMOS process.
Applications
The ADRF6520ACPZ is ideal for various wireless communication systems, including:
- Quadrature-based (IQ) communication systems with dense constellations and multiple carriers.
- Systems requiring high rejection of out-of-band interferers.
- Applications needing precise analog signal processing, such as in μW radios and other wireless communication devices.
Q & A
- What is the primary function of the ADRF6520ACPZ?
The ADRF6520ACPZ is a dual programmable filter and variable gain amplifier (VGA) designed for RF applications, particularly in quadrature-based communication systems.
- What is the frequency range of the ADRF6520ACPZ?
The device operates up to 1.25 GHz, with programmable filter corner frequencies ranging from 36 MHz to 720 MHz.
- What type of package does the ADRF6520ACPZ come in?
The ADRF6520ACPZ is available in a 32-lead LFCSP (5mm x 5mm x 0.75mm w/ EP) package.
- What is the supply voltage range for the ADRF6520ACPZ?
The supply voltage range is from 3.15 V to 3.45 V.
- How much current does the ADRF6520ACPZ consume?
The maximum supply current is 425 mA, and it consumes ≤10 mA when fully disabled.
- What is the filter response of the ADRF6520ACPZ?
The filters provide a four-pole Butterworth response.
- Can the filter be bypassed in the ADRF6520ACPZ?
- What is the gain control range of the VGAs in the ADRF6520ACPZ?
The VGAs offer 30 dB of continuous gain control, with a maximum gain of 18 dB pre-filter and 12 dB post-filter.
- How does the ADRF6520ACPZ handle dc offset correction?
The device has independent dc offset correction loops for each channel, which can be disabled via the SPI interface if fully dc-coupled operation is desired.
- What is the operating temperature range of the ADRF6520ACPZ?
The operating temperature range is from −40°C to +85°C.
