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Analog devices

Analog devices

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Minimum Order

Place of Origin:

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Price for Minimum Order:

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Minimum Order Quantity:

10 Piece

Packaging Detail:

CAN

Delivery Time:

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Supplying Ability:

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Payment Type:

T/T, Money Gram, PayPal

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23K,Bldg D Huaqiang Square Futian, Shenzhen

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Description


PRODUCT DESCRIPTION
The AD**0 and AD**2 dual channel, low noise variable gain
amplifiers are optimized for use in ultrasound imaging systems,
but are applicable to any application requiring very precise gain,
low noise and distortion, and wide bandwidth. Each independent
channel provides a gain of 0 dB to **0 dB in the AD**0
and –*0 dB to **0 dB in the AD**2. The lower gain of the
AD**2 results in an improved signal-to-noise ratio at the output.
However, both products have the same 1.4 nV/ÖHz input
noise spectral density. The decibel gain is directly proportional
to the control voltage, is accurately calibrated, and is supplyand
temperature-stable.
To achieve the difficult performance objectives, a proprietary
circuit form—the X-AMP®—has been developed. Each channel
of the X-AMP comprises a variable attenuator of 0 dB to
–*2.*4 dB followed by a high speed fixed gain amplifier. In this
way, the amplifier never has to cope with large inputs, and can
benefit from the use of negative feedback to precisely define the
gain and dynamics. The attenuator is realized as a seven-stage
R*2R ladder network having an input resistance of **0 W, lasertrimmed
to ±2%. The attenuation between tap points is 6.*2 dB;
the gain-control circuit provides continuous interpolation between
these taps. The resulting control function is linear in dB

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