Overview
The ADRF6521ACPZ from Analog Devices Inc. is a dual, fully differential, low noise and low distortion variable gain amplifier (VGA). This component is designed to operate from low frequencies up to 3 GHz, making it ideal for various high-performance applications. The ADRF6521 features a high spurious-free dynamic range over its gain range, which is crucial for communication systems with dense constellations, multiple carriers, and nearby interferers. It is fabricated in an advanced silicon-germanium BiCMOS process and is available in a 20-lead, exposed pad, 3 mm × 3 mm LFCSP package.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Voltage Gain | 18 dB (typical) | dB |
| Gain Attenuation Range | 21 dB (typical) | dB |
| Differential Input Impedance | 100 Ω | Ω |
| Differential Output Impedance | 16 Ω | Ω |
| ±1 dB Gain Flatness Bandwidth | 2.5 GHz (typical) | GHz |
| Maximum Output Swing | 1.5 V p-p into 100 Ω loads | V p-p |
| IMD2, IMD3, HD2, and HD3 | >55 dBc at 100 Ω interface | dBc |
| Supply Voltage | Single +5 V or dual supplies | V |
| Total Supply Current | 200 mA (typical) | mA |
| Disabled Supply Current | 25 mA (typical) | mA |
| Operating Temperature Range | −40°C to +85°C | °C |
| Package Type | 20-lead, exposed pad, 3 mm × 3 mm LFCSP |
Key Features
- Dual, fully differential, low noise and low distortion variable gain amplifier (VGA)
- High spurious-free dynamic range over the gain range
- Maximum voltage gain of 18 dB and gain attenuation range of 21 dB
- ±1 dB gain flatness bandwidth of 2.5 GHz
- Low IMD (Intersymbol Distortion) and harmonic distortion figures
- Variable output DC offset control via OFS1 and OFS2 pins
- Output common-mode control via VOCM pin
- Operates from a single +5 V supply or from a range of dual supplies
- Fabricated in advanced silicon-germanium BiCMOS process
Applications
- Communication systems with dense constellations, multiple carriers, and nearby interferers
- Satellite links and frequency conversion
- Wireless communication systems
- Radar systems and navigation
- Low noise amplifiers and antenna arrays
- RF transceivers, spectrum analysis, remote sensing, and surveillance
- Telecommunication and data acquisition systems
- Test equipment and broadcasting
Q & A
- What is the typical voltage gain of the ADRF6521?
The typical voltage gain of the ADRF6521 is 18 dB.
- What is the gain attenuation range of the ADRF6521?
The gain attenuation range of the ADRF6521 is 21 dB typical.
- What is the differential input impedance of the ADRF6521?
The differential input impedance of the ADRF6521 is 100 Ω.
- What is the maximum output swing of the ADRF6521 into 100 Ω loads?
The maximum output swing of the ADRF6521 into 100 Ω loads is 1.5 V p-p.
- How does the ADRF6521 control output DC offset?
The ADRF6521 controls output DC offset via the OFS1 and OFS2 pins.
- What is the operating temperature range of the ADRF6521?
The operating temperature range of the ADRF6521 is −40°C to +85°C.
- What package type is the ADRF6521 available in?
The ADRF6521 is available in a 20-lead, exposed pad, 3 mm × 3 mm LFCSP package.
- What are some common applications of the ADRF6521?
The ADRF6521 is commonly used in communication systems, satellite links, wireless communication, radar systems, and more.
- How does the ADRF6521 manage output common-mode voltage?
The ADRF6521 manages output common-mode voltage via the VOCM pin.
- What is the total supply current of the ADRF6521 when fully enabled?
The total supply current of the ADRF6521 when fully enabled is 200 mA typical.
