AD602ARZ

Semiconductors - ICs

> Amplifiers & Comparators

> Programmable Gain Amplifiers

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Series Information for AD602ARZ - Analog Devices

Features

  • feature
    2 channels with independent gain control Linear in dB gain response 2 gain ranges AD600: 0 dB to 40 dB AD602: u201310 dB to +30 dB Accurate absolute gain: u00b10.3 dB Low input noise: 1.4 nV/u221aHz Low distortion: u221260 dBc THD at u00b11 V output High bandwidth: dc to 35 MHz (u22123 dB) Stable group delay: u00b12 ns Low power: 125 mW (maximum) per amplifier Signal gating function for each amplifier Drive high speed ADCs MIL-STD-883-compliant and DESC versions available

Description

VARIABLE GAIN AMP 35MHZ WSOIC-16
The AD600/AD6021 dual-channel, low noise, variable gain amplifiers are optimized for use in ultrasound imaging systems but are applicable to any application requiring precise gain, low noise and distortion, and wide bandwidth. Each independent channel provides a gain of 0 dB to +40 dB in the AD600 and −10 dB to +30 dB in the AD602. The lower gain of the AD602 results in an improved signal-to-noise ratio (SNR) at the output. However, both products have the same 1.4 nV/√Hz input noise spectral density. The decibel gain is directly proportional to the control voltage, accurately calibrated, and supply and temper- ature stable. To achieve the difficult performance objectives, a proprietary circuit form, the X-AMP®, was developed. Each channel of the X-AMP comprises a variable attenuator of 0 dB to −42.14 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 7-stage R-2R ladder network having an input resistance of 100 Ω, laser trimmed to ±2%. The attenuation between tap points is 6.02 dB; the gain-control circuit provides continuous interpolation between these taps. The resulting control function is linear in dB.

Specifications

No. of Channels:
2Channels
No. of Amplifiers:
2 Amplifier
Bandwidth:
35MHz
Operating Temperature Min:
-40°C
Operating Temperature Max:
85°C
Supply Voltage Range:
± 4.75V to ± 5.25V
Amplifier Case Style:
WSOIC
No. of Pins:
16Pins
Product Range:
-
Automotive Qualification Standard:
-
RoHS Phthalates Compliant:
Yes
MSL:
-
SVHC:
No SVHC (07-Jul-2017)