1 MHz TO 2.7 GHz RF Gain Block
The AD8353 is a broadband, fixed-gain, linear amplifier that operates at frequencies from 1 MHz up to 2.7 GHz. It is intended for use in a wide variety of wireless devices, including cellular, broadband, CATV, and LMDS/MMDS applications.
By taking advantage of ADI’s high performance, complementary Si bipolar process, these gain blocks provide excellent stability over process, temperature, and power supply. This amplifier is single-ended and internally matched to 50 Ω with a return loss of greater than 10 dB over the full operating frequency range.
The AD8353 provides linear output power of 9 dBm with 20 dB of gain at 900 MHz when biased at 3 V and an external RF choke is connected between the power supply and the output pin. The dc supply current is 42 mA. At 900 MHz, the output third-order intercept (OIP3) is greater than 23 dBm and is 19 dBm at 2.7 GHz.
The noise figure is 5.3 dB at 900 MHz. The reverse isolation (S12) is −36 dB at 900 MHz and −30 dB at 2.7 GHz.
The AD8353 can also operate with a 5 V power supply; in which case, no external inductor is required. Under these conditions, the AD8353 delivers 8 dBm with 20 dB of gain at 900 MHz. The dc supply current is 42 mA. At 900 MHz, the OIP3 is greater than 22 dBm and is 19 dBm at 2.7 GHz. The noise figure is 5.6 dB at 900 MHz. The reverse isolation (S12) is −35 dB.
The AD8353 is fabricated on ADI’s proprietary, high performance, 25 GHz, Si complementary, bipolar IC process. The AD8353 is available in a chip scale package that uses an exposed paddle for excellent thermal impedance and low impedance electrical connection to ground. It operates over a −40°C to +85°C temperature range, and an evaluation board is also available.
- VCO buffers
- General Tx/Rx amplification
- Power amplifier predrivers
- Low power antenna drivers
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
AD8353-EVALZ is a fully populated, 4-layer, FR4-based evaluation board. For normal operation, it requires a single power supply of 2.7 V - 5.5 V, capable of delivering 50 mA. The power supply should be connected to the vector pins labeled VP and COM. The RF input is applied to the SMA connector labeled INPUT and the RF output is available at the SMA connector labeled OUTPUT. For 3 V operation an inductor L1, is installed between VPOS and RFOUT to increase current through the output stage. By default L1 is installed and should be removed for operation at 5 V.
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.
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.