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Technical ArticlesBits to Beams: RF Technology Evolution for 5G Millimeter Wave Radios
Features and Benefits
- −3 dB bandwidth: 6.5 GHz typical
- Preset 20 dB voltage gain, can be reduced by adding external resistors
- Differential or single-ended input to differential output
- Internally dc-coupled inputs and outputs
- Low noise input stage: 9.3 dB noise figure at 2 GHz
- Low distortion at 5 V supply and 2 V p-p output with 100 Ω load
- 500 MHz: −78 dBc (HD2), −71 dBc (HD3), −80 dBc (IMD3)
- 2 GHz: −64 dBc (HD2), −52 dBc (HD3), −65 dBc (IMD3)
- Input voltage noise (NSD, RTI): 1.0 nV/√Hz at 100 MHz
- Single-supply operation: ac-coupled applications
- Dual-supply operation: dc-coupled applications
- Slew rate: 24 V/ns at 2 V p-p output
- DC power consumption: 86 mA per amplifier at 5 V
The ADL5569 is a high performance, dual, differential amplifier with 20 dB of voltage gain, optimized for applications spanning from dc to 6.5 GHz. The amplifier is available in a dual format, and it offers a low referred to input (RTI) noise spectral density (NSD) of 1.0 nV/√Hz (at 100 MHz) and excellent distortion performance over a wide frequency range, making it an ideal driver for high speed 12-bit to 16-bit analog-to-digital converters (ADCs). The ADL5569 is ideally suited for use in high performance zero intermediate frequency (IF) and complex IF receiver designs. In addition, this device has excellent low distortion for single-ended input driver applications.
Using two external series resistors for each amplifier expands the gain flexibility of the amplifier and allows any gain selection from 6 dB to 20 dB for a differential input. For a single-ended input, the gain can be adjusted from 6 dB to 17 dB with the addition of some external resistors. This device maintains low distortion through its output common-mode range of 2.0 V to 3.0 V, providing a flexible capability for driving ADCs with ac levels up to 2 V p-p.
Operating from a single 5 V supply, the quiescent current of the ADL5569 is typically 86 mA per amplifier. When disabled, the amplifiers consume only 8 mA per amplifier.
The device is optimized for wideband, low distortion, and low noise operation, giving it unprecedented second harmonic distortion (HD2) and third harmonic distortion (HD3) from dc to 4 GHz. These attributes, together with its adjustable gain capability, make this device the amplifier of choice for driving a wide variety of ADCs, mixers, pin diode attenuators, surface acoustic wave (SAW) filters, and a multitude of discrete radio frequency (RF) devices.
Fabricated on an Analog Devices, Inc., high speed silicon germanium (SiGe) process, the ADL5569 is supplied in a compact 2.5 mm × 3 mm, 16-lead LFCSP package and operates over the −40°C to +85°C temperature range.
- Differential ADC drivers for GSPS ADCs
- High speed data acquisition
- Single-ended to differential conversion
- DAC buffering
- DC coupling and level shifting
- RF/IF gain blocks
- Balun alternative from dc to 4 GHz
- SAW filter interfacing
Product Lifecycle Recommended for New Designs
This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.
Evaluation Kits (1)
The evaluation board is powered by a single 5 V supply. The power supply is decoupled by 10 µF and 0.1 µF capacitors. On board regulators provide a 2.5 V common mode voltage and 3 V logic supply voltage to enable/disable the power-down feature.
Several termination options are also provided to allow the user to terminate unused inputs/outputs of the amplifier for single-ended applications.
Tools & Simulations
Product Selection Guide (1)
Technical Articles (1)
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.
Sample & Buy
The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.