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Overview
Features and Benefits
- Qualified for automotive applications
- FET input amplifier
- 1 pA input bias current
- Low cost
- High speed: 145 MHz, −3 dB bandwidth (G = +1)
- 180 V/µs slew rate (G = +2)
- Low noise
- 7 nV/√Hz (f = 10 kHz)
- 0.6 fA/√Hz (f = 10 kHz)
- 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
- Download AD8065-KGD-CHIPS Data Sheet
Product Details
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.
The AD8065/AD8066 are high performance, high speed, FET input amplifiers available in small packages: SOIC-8, MSOP-8, and SOT-23-5. They are rated to work over the industrial temperature range of −40°C to +85°C.
The AD8065WARTZ-R7 is fully qualified for automotive applications. It is rated to operate over the extended temperature range (−40°C to +105°C), up to a maximum supply voltage range of ±5 V only
Applications
- Automotive driver assistance systems
- Photodiode preamps
- Filters
- A/D drivers
- Level shifting
- Buffering
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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.
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Use the Analog Filter Wizard to design low-pass, high-pass, or band-pass filters with actual op amps in minutes. As you progress through the design process, you can observe the characteristics of your filter design from ideal specifications to real world circuit behavior. Quickly evaluate the tradeoffs in op amp specifications - including gain-bandwidth, noise, and supply current – to determine the best filter design for your requirements.
Use Photodiode Wizard to design a transimpedance amplifier circuit to interface with a photodiode. Select a photodiode from the library included in the tool, or enter custom photodiode specifications. Quickly observe tradeoffs between Bandwidth, Peaking (Q), and ENOB/SNR. Modify circuit parameters, and immediately see results in plots for pulse response, frequency response, and noise gain.
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This tool estimates die temperature and power dissipation based on the supply voltages, ambient temperature, load characteristics, and package thermal data.
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