AD605BRZ Analog Control Variable Gain Amplifiers (VGAs) by Analog Devices

Analog Control Variable Gain Amplifiers (VGAs)
Status: Production
Series: AD605
RoHS: Compliant
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The AD605 is a low noise, accurate, dual-channel, linear-in-dB variable gain amplifier (VGA), optimized for any application requiring high performance, wide bandwidth variable gain control. Operating from a single 5 V supply, the AD605 provides differential inputs and unipolar gain control for ease of use. Added flexibility is achieved with a user-determined gain range and an external reference input that provide user-determined gain scaling (dB/V). The high performance linear-in-dB response of the AD605 is achieved with the differential input, single-supply, exponential amplifier (DSX-AMP) architecture. Each of the DSX-AMPs comprises a variable attenuator of 0 dB to −48.4 dB followed by a high speed, fixed-gain amplifier. The attenuator is based on a 7-stage R-1.5R ladder network. The attenuation between tap points is 6.908 dB, and 48.360 dB for the entire ladder network. The DSX-AMP architecture results in 1.8 nV/√Hz input noise spectral density and accepts a ±2.0 V input signal when VOCM is biased at VP/2. Each independent channel of the AD605 provides a gain range of 48 dB that can be optimized for the application. Gain ranges between −14 dB to +34 dB and 0 dB to +48 dB can be selected by a single resistor between Pin FBK and Pin OUT. The lower and upper gain ranges are determined by shorting Pin FBK to Pin OUT or leaving Pin FBK unconnected, respectively. The two channels of the AD605 can be cascaded to provide 96 dB of very accurate gain range in a monolithic package. The gain control interface provides an input resistance of approximately 2 MΩ and scale factors from 20 dB/V to 30 dB/V for a VREF input voltage of 2.5 V to 1.67 V, respectively. Note that scale factors up to 40 dB/V are achievable with reduced accuracy for scales above 30 dB/V. The gain scales linearly in dB with control voltages (VGN) of 0.4 V to 2.4 V for the 20 dB/V scale and 0.20 V to 1.20 V for the 40 dB/V scale. When VGN is The AD605 is available in a 16-lead PDIP and a 16-lead SOIC_N package and is guaranteed for operation over the −40°C to +85°C temperature range.

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Prices starting from US$24.28

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Alternative Descriptions

GAIN AMPLIFIER, 40MHZ, NSOIC | element14
SOIC LO-NOISE DUAL-CH WBND VGA | Analog Devices
Variable Gain Amp Dual Low Noise SOIC16 | RS
Gain Amplifier, 40Mhz, Nsoic | Newark Electronics

Frequently Asked Questions

Where can I find additional details, specifications and documents for a AD605BRZ?

Additional datasheets, footprints and schematics for AD605BRZ are listed on our Part Details page. You can also find images and similar parts to AD605BRZ on this page.

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What category does AD605BRZ fall under?

The AD605BRZ is listed under Analog Control Variable Gain Amplifiers (VGAs).

Can I view similar or alternative parts?

You can view similar parts to AD605BRZ when available in the Analog Control Variable Gain Amplifiers (VGAs) range under the specifications section at the bottom of the details page.

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Submit any questions directly to the customer support team of the distributor listing the product. For the AD605BRZ you can contact the distributor directly for product support, shipping queries etc.

Is the AD605BRZ RoHS compliant?

Yes. This part has been flagged as RoHS Compliant by Analog Devices.

Which authorised distributors for AD605BRZ have stock available?

Authorised distributors including element14, Analog Devices, RS, Newark Electronics and Farnell have stock available or on a lead time for AD605BRZ.

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