ADL5545 - 24dB RF/IF Gain Block 30MHz-6GHz | Analog Devices
N.º de pieza: ADL5545 ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $3.5 | $3,50 |
| 10 | $3.1 | $31,00 |
| 100 | $2.6 | $260,00 |
| 500 | $2.2 | $1.100,00 |
| 1.000 | $1.83 | $1.830,00 |
ADL5545 Descripción general
An RF gain block is a type of amplifier used to boost signal power in radio frequency systems, typically placed between stages to compensate for insertion losses. It is a fundamental building block in RF front-ends, often following a mixer or filter and preceding a power amplifier or antenna. Gain blocks are characterized by parameters such as gain, bandwidth, output third-order intercept point (OIP3), noise figure, and supply current. The ADL5545 belongs to the category of broadband gain blocks, which are essential in applications requiring flat gain across a wide frequency range.
Key features of the ADL5545 include a fixed gain of 24.1 dB, an OIP3 of over 36 dBm, and a supply current of only 56 mA from a 5 V supply. The device operates over a frequency range of 30 MHz to 6 GHz, covering many communication bands including cellular, ISM, and Wi-Fi. The SOT-89 package is a standard surface-mount package with a thermal pad, allowing for efficient heat dissipation. The amplifier is internally matched to 50 Ω, eliminating the need for external matching networks and reducing component count.
Technically, the ADL5545 uses a Darlington-pair topology with active bias, providing high linearity and stable performance over temperature and supply variations. The active bias circuit ensures consistent operating point, which contributes to the gain stability. The device is designed to operate from a single 5 V supply, with a typical supply current of 56 mA, resulting in a power dissipation of approximately 280 mW. The SOT-89 package has a thermal resistance of about 50°C/W, so adequate PCB copper area is recommended for thermal management.
Typical applications for the ADL5545 include cellular base station transceivers, wireless infrastructure, test and measurement equipment, and general-purpose RF amplification. Its wide bandwidth and high linearity make it suitable for both transmit and receive paths. In a typical application, the ADL5545 is placed after a mixer to amplify the IF signal or before a power amplifier to drive it to the required level.
When designing with the ADL5545, it is important to provide proper AC coupling at the input and output, as the device is internally biased. A bias inductor is required on the output to supply DC power while blocking RF. The ground pad should be soldered to a low-inductance ground plane to ensure thermal and electrical performance. The device is rated for operation over the temperature range of -40°C to +85°C, making it suitable for industrial applications.
Alternativas directas para ADL5545 — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
ADL5544ARKZ-R7
✅ Sustitución directa ⚠️ Especificaciones sin verificar📋 Alternativa de referencia (no en el catálogo)
ADL5546ARKZ-R7
✅ Sustitución directa ⚠️ Especificaciones sin verificar📋 Alternativa de referencia (no en el catálogo)
ADL5523ARKZ-R7
✅ Sustitución directa ⚠️ Especificaciones sin verificar📋 Alternativa de referencia (no en el catálogo)
GVA-63+
✅ Sustitución directa ⚠️ Especificaciones sin verificar📋 Alternativa de referencia (no en el catálogo)
PGA-103+
✅ Sustitución directa ⚠️ Especificaciones sin verificar📋 Alternativa de referencia (no en el catálogo)
ADL5545 Valores máximos y características eléctricas
| Frequency Range | 30 MHz to 6 GHz |
| Gain | 24.1 dB |
| OIP3 | 36 dBm |
| Tensión de alimentación | 5 V |
| Corriente de alimentación | 56 mA |
| Encapsulado | SOT-89-3 |
| Tipo de montaje | Surface Mount |
| Temperatura de funcionamiento | -40°C to +85°C |
| Estado RoHS | Compliant |
| Input/Output Impedance | 50 Ω |
Configuración de pines de ADL5545
| Pin 1 | RFIN — RF input, internally matched to 50 Ω |
| Pin 2 | GND — Ground, exposed pad |
| Pin 3 | RFOUT — RF output, internally matched to 50 Ω |
Aplicaciones típicas
ADL5545 es adecuado para 6 aplicacións: Cellular Base Station Transceivers, Wireless Infrastructure, Test and Measurement Equipment, RF/IF Signal Chain Amplification, General Purpose RF Amplification, 5G Sub-6 GHz Infrastructure.
Cellular Base Station Transceivers
The ADL5545 is ideal for cellular base station transceivers due to its wide frequency range of 30 MHz to 6 GHz and high OIP3 of 36 dBm. It provides a fixed gain of 24.1 dB, which is stable over temperature and supply, ensuring consistent performance in the RF front-end. The amplifier is internally matched to 50 Ω, simplifying integration into the signal chain. Its low supply current of 56 mA is beneficial for power-sensitive designs. The high linearity minimizes intermodulation distortion, which is critical for multi-carrier and high-order modulation schemes used in 4G and 5G systems.
Recomendado
Wireless Infrastructure
In wireless infrastructure, the ADL5545 serves as a general-purpose gain block in both transmit and receive paths. Its broadband operation from 30 MHz to 6 GHz covers various communication standards, including Wi-Fi, LTE, and 5G. The device's high OIP3 ensures low distortion in the presence of strong signals, while its stable gain over temperature and supply voltage maintains system performance. The SOT-89 package is compact and easy to assemble, making it suitable for high-volume production. The internal 50 Ω matching reduces external component count, lowering BOM cost and board space.
Recomendado
Test and Measurement Equipment
The ADL5545 is well-suited for test and measurement equipment such as spectrum analyzers and signal generators, where flat gain and high linearity are essential. Its frequency range of 30 MHz to 6 GHz covers many test frequencies, and its 24.1 dB gain provides sufficient amplification for signal conditioning. The device's stable gain over temperature ensures accurate measurements over a wide operating range. The SOT-89 package allows for easy integration into compact instrument designs. The low supply current is advantageous for portable test equipment.
Recomendado
RF/IF Signal Chain Amplification
The ADL5545 is commonly used as an IF amplifier in superheterodyne receivers, providing gain at intermediate frequencies. Its broadband operation from 30 MHz to 6 GHz allows it to be used in various IF frequencies, such as 70 MHz, 140 MHz, or 450 MHz. The high OIP3 of 36 dBm ensures that the amplifier does not introduce significant distortion, preserving signal integrity. The device's internal 50 Ω matching simplifies the interface with mixers and filters. The fixed gain of 24.1 dB reduces the need for variable gain stages in some designs.
Recomendado
General Purpose RF Amplification
The ADL5545 is a versatile gain block suitable for general-purpose RF amplification in a wide range of applications, including radar, satellite communications, and industrial RF systems. Its wide frequency range and stable gain make it a reliable choice for signal boosting. The device's high linearity ensures minimal distortion, which is important for applications with stringent spectral requirements. The SOT-89 package is robust and easy to handle, and the internal 50 Ω matching simplifies PCB layout. The low supply current makes it suitable for battery-operated devices.
Recomendado
5G Sub-6 GHz Infrastructure
The ADL5545 is well-suited for 5G sub-6 GHz infrastructure, covering frequencies from 3.3 GHz to 5 GHz. Its high OIP3 of 36 dBm is essential for handling the high peak-to-average power ratios of 5G waveforms. The device's stable gain over temperature and supply ensures consistent performance in outdoor base stations. The SOT-89 package is compact, allowing for dense PCB layouts in active antenna systems. The internal 50 Ω matching reduces component count, which is critical for cost-sensitive mass production.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para ADL5545 — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | ADL5544ARKZ-R7 | ADL5546ARKZ-R7 | GVA-63+ |
|---|---|---|---|---|
| Package | SOT-89-3 | SOT-89-3 | SOT-89-3 | SOT-89-3 |
| Brand | Analog Devices | Analog Devices | Analog Devices | Mini-Circuits |
| Gain | 24.1 dB | 20 dB | 26 dB | 20 dB |
| Frequency Range | 30 MHz to 6 GHz | 30 MHz to 6 GHz | 30 MHz to 6 GHz | 10 MHz to 6 GHz |
| OIP3 | 36 dBm | 36 dBm | 36 dBm | 38 dBm |
| Supply Voltage | 5 V | 5 V | 5 V | 5 V |
| Supply Current | 56 mA | 56 mA | 56 mA | 68 mA |
| Input/Output Impedance | 50 Ω | 50 Ω | 50 Ω | 50 Ω |
Diferenciadores clave
- Higher gain than ADL5544 (frente a ADL5544ARKZ-R7)
- Lower gain than ADL5546 (frente a ADL5546ARKZ-R7)
- Wider frequency range than ADL5523 (frente a ADL5523ARKZ-R7)
Notas de diseño
Ensure proper grounding of the exposed pad on the SOT-89 package. Use multiple vias to connect the pad to the ground plane to minimize thermal resistance and inductance. Place AC coupling capacitors close to the input and output pins to minimize parasitic effects.
The ADL5545 requires a 5 V supply and draws 56 mA. Use a low-inductance bypass capacitor (e.g., 100 pF and 0.1 uF) near the supply pin to ensure stable operation. A bias inductor (e.g., 1 uH) is needed on the output to supply DC while blocking RF.
The ADL5545 dissipates approximately 280 mW at 5 V and 56 mA. The SOT-89 package has a thermal resistance of about 50°C/W, so ensure adequate copper area on the PCB for heat sinking. For high ambient temperatures, consider adding thermal vias or a heatsink.
Información de cumplimiento
RoHS compliant per Analog Devices product page. No AEC-Q100 qualification indicated.
