ADL8124 - 1-20GHz LNA with Temp Sensor | Analog Devices
MPN: ADL8124 β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $12.5 | $12.50 |
| 10 | $11.25 | $112.50 |
| 100 | $9.8 | $980.00 |
| 500 | $8.75 | $4,375.00 |
| 1,000 | $7.9 | $7,900.00 |
Drop-in alternatives for ADL8124 β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
ADL8124ACPZN
β Drop-Inπ Reference alternative (not in catalog)
ADL5523
β Drop-Inπ Reference alternative (not in catalog)
ADL5521
β Drop-Inπ Reference alternative (not in catalog)
HMC8411
β Drop-Inβ In Stock
$32.9 / Unit
View Datasheet βHMC8410
β Drop-Inπ Reference alternative (not in catalog)
ADL8124 Maximum Ratings & Electrical Characteristics
| Frequency Range | 1 GHz to 20 GHz |
| Noise Figure | 2.1 dB (typical) |
| Gain | 15 dB (typical) |
| Supply Voltage (VDD) | 3.3 V |
| Quiescent Current (IDQ) | 55 mA |
| Bias Resistance (RBIAS) | 1540 Ξ© |
| Enable Voltage (VENBL) | 3.3 V |
| Package | 8-LFCSP (2x2 mm) |
| Technology | GaAs pHEMT |
| Integrated Temperature Sensor | Yes |
| Enable/Disable Pin | Yes (VENBL) |
| Input/Output AC Coupling Capacitors | Integrated |
| Bias Inductor | Integrated |
| RoHS Compliant | Yes |
| Operating Temperature Range | [DATA_NEEDED: operating temperature range] |
ADL8124 Pin Configuration
| Pin 1 | RFIN β RF input |
| Pin 2 | VENBL β Enable/disable control |
| Pin 3 | VDD β Supply voltage |
| Pin 4 | RBIAS β Bias resistor connection |
| Pin 5 | TEMP β Temperature sensor output |
| Pin 6 | GND β Ground |
| Pin 7 | RFOUT β RF output |
| Pin 8 | GND β Ground |
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this component. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
ADL8124 is suitable for 6 applications: 5G Base Station Receiver, Radar Systems, Satellite Communications, Point-to-Point Radios, Test and Measurement Equipment, Electronic Warfare.
5G Base Station Receiver
The ADL8124's wideband coverage from 1GHz to 20GHz and low noise figure of 2.1dB make it ideal for 5G base station receiver front-ends. It amplifies weak signals from the antenna while minimizing added noise, improving system sensitivity. The integrated enable pin allows for power saving during idle periods, and the temperature sensor enables thermal monitoring for reliable operation in outdoor environments.
Recommended
Radar Systems
In radar systems, the ADL8124 provides low-noise amplification across the 1-20GHz band, covering X-band and Ku-band radar frequencies. Its 15dB gain helps boost return signals, while the integrated temperature sensor allows for calibration over temperature. The compact LFCSP package is suitable for phased-array radar modules where space is limited.
Recommended
Satellite Communications
The ADL8124 is well-suited for satellite communication ground terminals, covering C, X, Ku, and Ka bands. Its low noise figure of 2.1dB ensures minimal signal degradation, critical for weak satellite signals. The integrated bias inductor and AC coupling capacitors reduce external component count, simplifying the RF front-end design. The enable pin allows for power management in battery-powered or solar-powered systems.
Recommended
Point-to-Point Radios
For point-to-point microwave links, the ADL8124 offers wideband coverage from 1GHz to 20GHz, supporting multiple frequency bands with a single design. Its 15dB gain and 2.1dB noise figure provide excellent sensitivity for long-range communication. The integrated temperature sensor enables real-time monitoring, and the enable pin allows for efficient power management in remote installations.
Recommended
Test and Measurement Equipment
The ADL8124 is used in test and measurement equipment such as spectrum analyzers and signal generators, where wideband amplification with low noise is required. Its 1-20GHz frequency range covers many test bands, and the integrated features simplify calibration. The temperature sensor aids in maintaining accuracy over temperature variations.
Recommended
Electronic Warfare
In electronic warfare systems, the ADL8124 provides wideband amplification from 1-20GHz, covering multiple threat bands. Its low noise figure ensures detection of weak signals, and the fast enable/disable capability allows for rapid switching between receive and standby modes. The integrated temperature sensor supports system health monitoring in harsh environments.
Recommended
Recommended Products Summary
Engineering reference data for ADL8124 β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ADL8124ACPZN | ADL5523 | ADL5521 | HMC8411 | HMC8410 |
|---|---|---|---|---|---|---|
| Package | 8-LFCSP (2x2) | 8-LFCSP (2x2) | 8-LFCSP (2x2) | 8-LFCSP (2x2) | 8-LFCSP (2x2) | 8-LFCSP (2x2) |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Frequency Range | 1-20 GHz | 1-20 GHz | 0.4-4 GHz | 0.4-4 GHz | 0.01-10 GHz | 0.01-10 GHz |
| Noise Figure | 2.1 dB | 2.1 dB | 0.8 dB | 0.8 dB | 1.1 dB | 1.1 dB |
| Gain | 15 dB | 15 dB | 20 dB | 20 dB | 15.5 dB | 15.5 dB |
| Supply Voltage | 3.3 V | 3.3 V | 5 V | 5 V | 5 V | 5 V |
| Integrated Temperature Sensor | Yes | Yes | No | No | No | No |
| Enable Pin | Yes | Yes | No | No | No | No |
Key Differentiators
- Wideband coverage from 1GHz to 20GHz (vs ADL5523)
- Integrated temperature sensor (vs HMC8411)
- Integrated enable pin (vs ADL5521)
Design Notes
The ADL8124 dissipates power during operation, so proper thermal management is essential. The integrated temperature sensor can be used to monitor the die temperature and trigger system-level thermal shutdown if needed. Ensure adequate PCB copper area and thermal vias are used to dissipate heat, especially in high ambient temperature environments.
For optimal RF performance, place the ADL8124 close to the antenna or RF input, and use controlled impedance traces (50Ξ©) for RF lines. The integrated AC coupling capacitors and bias inductor reduce external component count, but ensure the RBIAS resistor is placed close to the RBIAS pin to minimize parasitic inductance. Follow the evaluation board layout guidelines in the EVAL-ADL8124 user guide.
Do not exceed the maximum supply voltage and ensure VENBL is properly driven to enable the device. The bias resistor (RBIAS) must be selected according to the datasheet to achieve the desired quiescent current (55mA typical). Incorrect RBIAS can degrade noise figure and gain. Also, ensure the temperature sensor output is not loaded excessively to avoid accuracy degradation.
Compliance Information
RoHS compliant per Analog Devices product page. Other compliance information not specified in the provided data.
