Overview
The ADL5721ACPZN-R7 is a high-performance, narrow-band low noise amplifier (LNA) designed by Analog Devices Inc. This monolithic silicon germanium (SiGe) amplifier is optimized for microwave radio link bands ranging from 5.9 GHz to 8.5 GHz, making it ideal for microwave radio link receiver designs.
The unique design of the ADL5721 offers a single-ended 50 Ω input impedance and provides a 100 Ω balanced differential output, which is suitable for driving Analog Devices differential downconverters and RF sampling analog-to-digital converters (ADCs).
This LNA provides cost-effective noise figure performance without the need for more expensive III-V compounds process technology. It features a band switch capability, allowing the user to select between two frequency ranges using the BAND pin.
Key Specifications
| Parameter | Value |
|---|---|
| Frequency Range | 5.9 GHz to 8.5 GHz |
| Input Impedance | 50 Ω (single-ended) |
| Output Impedance | 100 Ω (balanced differential) |
| Gain | 25 dB |
| Noise Figure | 1.7 dB |
| Input P1dB | Varies with frequency and temperature (see datasheet for details) |
| Input IP3 | Varies with frequency and temperature (see datasheet for details) |
| Operating Temperature Range | -40°C to +85°C |
| Package Type | 8-lead, 2.00 mm × 2.00 mm LFCSP |
Key Features
- High-performance, narrow-band low noise amplifier optimized for microwave radio link bands.
- Single-ended 50 Ω input impedance and 100 Ω balanced differential output.
- Band switch feature allowing selection between two frequency ranges (5.9 GHz to 7.2 GHz and 7.1 GHz to 8.5 GHz) using the BAND pin.
- Cost-effective noise figure performance without the need for III-V compounds process technology.
- Ideal for driving Analog Devices differential downconverters and RF sampling ADCs.
- Compact 8-lead, 2.00 mm × 2.00 mm LFCSP package.
- Operates over a temperature range of -40°C to +85°C.
Applications
- Microwave radio link receiver designs.
- Differential downconverters and RF sampling analog-to-digital converters (ADCs).
- Wireless communication systems requiring high sensitivity and low noise.
- Radar and surveillance systems.
- Telecommunication infrastructure, including base stations and repeaters.
Q & A
- What is the frequency range of the ADL5721ACPZN-R7?
The ADL5721ACPZN-R7 operates within the frequency range of 5.9 GHz to 8.5 GHz.
- What is the input impedance of the ADL5721ACPZN-R7?
The input impedance is 50 Ω (single-ended).
- What is the output impedance of the ADL5721ACPZN-R7?
The output impedance is 100 Ω (balanced differential).
- How does the band switch feature work on the ADL5721ACPZN-R7?
The band switch feature allows the user to select between two frequency ranges using the BAND pin. A logic low of 0 V selects the lower frequency range (5.9 GHz to 7.2 GHz), and a logic high of 1.8 V selects the higher frequency range (7.1 GHz to 8.5 GHz).
- What is the typical gain of the ADL5721ACPZN-R7?
The typical gain is 25 dB.
- What is the noise figure of the ADL5721ACPZN-R7?
The noise figure is 1.7 dB.
- What is the operating temperature range of the ADL5721ACPZN-R7?
The operating temperature range is -40°C to +85°C.
- In what package is the ADL5721ACPZN-R7 available?
The ADL5721ACPZN-R7 is available in an 8-lead, 2.00 mm × 2.00 mm LFCSP package.
- What are some typical applications of the ADL5721ACPZN-R7?
Typical applications include microwave radio link receiver designs, differential downconverters, RF sampling ADCs, wireless communication systems, radar and surveillance systems, and telecommunication infrastructure.
- Why is the ADL5721ACPZN-R7 considered cost-effective?
The ADL5721ACPZN-R7 provides high-performance noise figure without the need for more expensive III-V compounds process technology.
