Date: 17/12/2012

Differential amplifiers for high-speed ADCs offer high OIP, low noise and distortion

Analog Devices introduced a dual-channel differential amplifier for driving high speed 12- to 18-bit A/D converters used in wideband, high IF (intermediate frequency), low distortion, and noise performance up to 500 MHz. ADL5566 differential amplifier is suggested 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 suggested 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.

ADL5566 Differential Amplifier Key Features:

High intercept power linearity: OIP3/OIP2 46 dBm/82.6 dBm at 200 MHz (16 dB gain)

2nd/3rd order distortion levels (2 Vpp into 200 ohms): –94.5 dBc/ –87.2 dBc at 200 MHz (16 dB gain)

RTI noise: 1.3 nV/v HZ (16dB gain)

Support single-ended and differential-input application

Power consumption: 70 mA per channel at 3.3 V and 80 mA per channel at 5 V

Power supply range: 2.8 V to 5.2 V with channel independent enable function

Availability: Now in 4mm x 4mm 24-lead LFCSP