145 MHz Fast FET Op Amps optical integrated circuits AD8065WARTZ High Performance

APPLICATIONS

►Automotive driver assistance systems

►Photodiode preamps

►Filters

►A/D drivers

►Level shifting

►Buffering

FEATURES

Wide supply voltage range: 5 V to 24 V

Single-supply and rail-to-rail output

Low offset voltage 1.5 mV maximum

High common-mode rejection ratio: −100 dB

Excellent distortion specifications

SFDR −88 dBc @ 1 MHz

Low power: 6.4 mA/amplifier typical supply current

No phase reversal

Small packaging: SOIC-8, SOT-23-5, and MSOP-8

GENERAL DESCRIPTION

The AD8065/AD80661 FastFET™ amplifiers are voltage feedback amplifiers with FET inputs offering high performance and ease of use. The AD8065 is a single amplifier, and the AD8066 is a dual amplifier. These amplifiers are developed in the Analog Devices, Inc. proprietary XFCB process and allow exceptionally low noise operation (7.0 nV/√Hz and 0.6 fA/√Hz) as well as very high input impedance.

With a wide supply voltage range from 5 V to 24 V, the ability to operate on single supplies, and a bandwidth of 145 MHz, the AD8065/AD8066 are designed to work in a variety of applications. For added versatility, the amplifiers also contain rail-to-rail outputs.

Despite the low cost, the amplifiers provide excellent overall performance. The differential gain and phase errors of 0.02% and 0.02°, respectively, along with 0.1 dB flatness out to 7 MHz, make these amplifiers ideal for video applications. Additionally, they offer a high slew rate of 180 V/μs, excellent distortion (SFDR of −88 dBc @ 1 MHz), extremely high common-mode rejection of −100 dB, and a low input offset voltage of 1.5 mV maximum under warmed up conditions. The AD8065/AD8066 operate using only a 6.4 mA/amplifier typical supply current and are capable of delivering up to 30 mA of load current.

TYPICAL PERFORMANCE CHARACTERISTICS

Default Conditions: ±5 V, CL = 5 pF, RL = 1 kΩ, VOUT = 2 V p-p, Temperature = 25°C.

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