Features and Benefits
- RF frequency: 700 MHz to 2800 MHz continuous
- LO frequency: 250 MHz to 2800 MHz, high-side or low-side inject
- IF range: 30 MHz to 450 MHz
- Power conversion gain of 7.5 dB at 1900 MHz
- SSB noise figure of 10.7 dB at 1900 MHz
- Input IP3 of 27.5 dBm at 1900 MHz
- Input P1dB of 12.7 dBm at 1900 MHz
- Typical LO drive of 0 dBm
- Single-ended, 50 Ω RF port
- Single-ended or balanced LO input port
- Single-supply operation: 3.6 V to 5.0 V
- Serial port interface control on all functions
- Exposed paddle 5 mm × 5 mm, 32-lead LFCSP package
The ADL5811 uses revolutionary new broadband, square wave limiting, local oscillator (LO) amplifiers to achieve an unprecedented radio frequency (RF) bandwidth of 700 MHz to 2800 MHz. Unlike conventional narrow-band sine wave LO amplifier solutions, this permits the LO to be applied either above or below the RF input over an extremely wide bandwidth. Because energy storage elements are not used, the dc current consumption also decreases with decreasing LO frequency.
The ADL5811 uses highly linear, doubly balanced, passive mixer cores along with integrated RF and LO balancing circuits to allow single-ended operation. The ADL5811 incorporates programmable RF baluns, allowing optimal performance over a 700 MHz to 2800 MHz RF input frequency. The balanced passive mixer arrangement provides outstanding LO-to-RF and LO-to-IF leakages, excellent RF-to-IF isolation, and excellent intermodulation performance over the full RF bandwidth.
The balanced mixer cores also provide extremely high input linearity, allowing the device to be used in demanding wideband applications where in-band blocking signals may otherwise result in the degradation of dynamic range. Blocker noise figure performance is comparable to narrow-band passive mixer designs. High linearity IF buffer amplifiers follow the passive mixer cores, yielding typical power conversion gains of 7.5 dB, and can be used with a wide range of output impedances. For low voltage applications, the ADL5811 is capable of operation at voltages down to 3.6 V with substantially reduced current. Two logic bits are provided to power down (<1.5 mA) the circuit when desired.
All features of the ADL5811 are controlled via a 3-wire serial port interface, resulting in optimum performance and minimum external components.
The ADL5811 is fabricated using a BiCMOS high performance IC process. The device is available in a 32-lead, 5mm × 5mm, LFCSP package and operates over a −40°C to +85°C temperature range. An evaluation board is also available.
- Multiband/multistandard cellular base station receivers
- Wideband radio link diversity downconverters
- Multimode cellular extenders and broadband receivers
Product Lifecycle Not Recommended for New Designs
This designates products ADI does not recommend broadly for new designs.
Evaluation Kits (1)
ADL5811-EVALZ is a fully populated, 4-layer, Rogers 3003-based evaluation board. It requires 5 V/185 mA or 3.6/125 mA power supply for normal operation. The power supply should be connected to the clip leads, labeled VPOS and AGND. All signal ports are populated with edge-mounted SMA connectors. RFIN is the RF input port, and LOIP is the LO input port. The IF output port, IFOP, is configured for single-ended output signaling via the on-board transformer. The IFON port provides the option for IF differential infterfacing, with R21 resistor removal. The evaluation board can be programmed through the USB port of a PC running Windows XP or Vista with Microsoft .NET Framework 3.5 installed. The required control software can be downloaded from www.analog.com.
Software & Systems Requirements
Tools & Simulations
ADIsimPLL enables the rapid and reliable evaluation of new high performance PLL products from ADI. It is the most comprehensive PLL Synthesizer design and simulation tool available today. Simulations performed include all key non-linear effects that are significant in affecting PLL performance. ADIsimPLL removes at least one iteration from the design process, thereby speeding the design- to-market.
ADIsimRF is an easy-to-use RF signal chain calculator. Cascaded gain, noise, distortion and power consumption can be calculated, plotted and exported for signal chains with up to 50 stages. ADIsimRF also includes an extensive data base of device models for ADI’s RF and mixed signal components.
ADL5811 Companion Parts
Recommended RF/IF Differential Amplifiers
- For ultralow distortion and adjustable gain with external resistor: AD8352.
- For ultralow distortion, pin strappable gain adjust: ADL5561.
- For a differential input/output IF VGA: AD8370, AD8375, ADL5336.
- For adjustable gain with external resistor: AD8351.
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.