Dual-channel differential amplifier drives high frequency ADCs with industry’s best distortion and noise performance

December 18, 2012 // By Paul Buckley
Analog Devices has introduced a dual-channel differential amplifier for driving high speed 12- to 18-bit A/D converters.

Featuring a 3 dB bandwidth of 4.5 GHz, the ADL5566 differential amplifier is optimized for wideband, high IF (intermediate frequency), low distortion, and noise performance out to 500 MHz. At 100 MHz, this device achieves an IP3 (third order intercept) and IP2 (second order intercept) of 51 dBm and 100 dBm. The ADL5566 differential amplifier is ideal for high linearity and low noise applications, including IF sampling receivers in wireless infrastructure equipment, industrial instrumentation and defense electronics. This new device is also an ideal solution for general purpose applications where the device delivers comparable single ended (input drive) distortion performance.

The ADL5566 differential amplifier supports detailed specifications at the following frequencies: 70 MHz, 100 MHz, 140 MHz, 250 MHz, 500 MHz, and 1000 MHz. Its best-in-class frequency distortion and noise level performance simplifies AAF (anti-aliasing filter) designs and allow system designers to continue increasing bandwidth and dynamic range for receivers with little or no impact on overall system performance.

The ADL5566 Differential Amplifier features a high intercept power linearity of OIP3/OIP2 46 dBm/82.6 dBm at 200 MHz (16 dB gain).  The device has a RTI noise of 1.3 nV/√ HZ (16 dB gain)

The ADL5566 has a power consumption of 70 mA per channel at 3.3 V and 80 mA per channel at 5 V.

Availability and Pricing

The ADL5566 differential amplifier packaged in a 4 mm x 4 mm 24-lead LFCSP is available now and is in full production.  The device is priced at $6.05 each In 1,000 quantities.

More information about the ADL5566 differential amplifier at
www.analog.com/en/rfif-components/rfif-amplifiers/adl5566/products/product.html