AD603
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AD603

Low Noise, 90 MHz Variable Gain Amplifier

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Info: : PRODUCTION tooltip
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Part Details
Part Models 7
1ku List Price Starting From $9.35
Features
  • Linear-in-dB gain control
  • Pin-programmable gain ranges
    −11 dB to +31 dB with 90 MHz bandwidth
    9 dB to 51 dB with 9 MHz bandwidth
  • Any intermediate range, for example −1 dB to +41 dB with 30 MHz bandwidth
  • Bandwidth independent of variable gain
  • 1.3 nV/√Hz input noise spectral density
  • ±0.5 dB typical gain accuracy
Additional Details
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The AD603 is a low noise, voltage-controlled amplifier for use in RF and IF AGC systems. It provides accurate, pin-selectable gains of −11 dB to +31 dB with a bandwidth of 90 MHz or +9 dB to 51+ dB with a bandwidth of 9 MHz. Any intermediate gain range may be arranged using one external resistor. The input referred noise spectral density is only 1.3 nV/√Hz, and power consumption is 125 mW at the recommended ±5 V supplies.

The decibel gain is linear in dB, accurately calibrated, and stable over temperature and supply. The gain is controlled at a high impedance (50 MΩ), low bias (200 nA) differential input; the scaling is 25 mV/dB, requiring a gain control voltage of only 1 V to span the central 40 dB of the gain range. An overrange and underrange of 1 dB is provided whatever the selected range. The gain control response time is less than 1 μs for a 40 dB change.

The differential gain control interface allows the use of either differential or single-ended positive or negative control voltages. Several of these amplifiers may be cascaded and their gain control gains offset to optimize the system SNR.

The AD603 can drive a load impedance as low as 100 Ω with low distortion. For a 500 Ω load in shunt with 5 pF, the total harmonic distortion for a ±1 V sinusoidal output at 10 MHz is typically −60 dBc. The peak specified output is ±2.5 V minimum into a 500 Ω load.

The AD603 uses a patented proprietary circuit topology—the X-AMP®. The X-AMP comprises a variable attenuator of 0 dB to −42.14 dB followed by a fixed-gain amplifier. Because of the attenuator, the amplifier never has to cope with large inputs and can use negative feedback to define its (fixed) gain and dynamic performance. The attenuator has an input resistance of 100 Ω, laser trimmed to ±3%, and comprises a 7-stage R-2R ladder network, resulting in an attenuation between tap points of 6.021 dB. A proprietary interpolation technique provides a continuous gain control function that is linear in dB.

The AD603 is specified for operation from −40°C to +85°C.

Applications

  • RF/IF AGC amplifiers
  • Video gain controls
  • A/D range extensions
  • Signal measurements
Part Models 7
1ku List Price Starting From $9.35

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
5962-9457203MPA
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AD603ACHIPS
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AD603AQ
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AD603ARZ
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AD603ARZ-REEL
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AD603ARZ-REEL7
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AD603SQ/883B
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Product Lifecycle

PCN

Apr 9, 2018

- 16_0026

Qualify TeamQuest Technology, Inc. for Burn-in and Life Test of Military and Aerospace Devices

5962-9457203MPA

PRODUCTION

AD603SQ/883B

PRODUCTION

Nov 7, 2012

- 12_0199

Qualification of New Conductive Silver-Filled Glass Die Attach Adhesive for Cerdip and Ceramic Flatpack (Cerpack) Packages.

Jun 6, 2012

- 12_0066

Add capacity for Burn In of Hermetic, 883 & QMLQ/Class B devices at TSSI Cavite

5962-9457203MPA

PRODUCTION

AD603AQ

PRODUCTION

AD603SQ/883B

PRODUCTION

Nov 9, 2011

- 11_0050

Transfer of ADI Hermetics Assembly location from Paranaque, Manila to General Trias, Cavite Philippines

5962-9457203MPA

PRODUCTION

AD603AQ

PRODUCTION

AD603SQ/883B

PRODUCTION

Nov 9, 2011

- 11_0182

Test Site Transfer from Analog Devices Philippines Inc in Paranaque to Analog Devices General Trias in Cavite, Philippines

5962-9457203MPA

PRODUCTION

AD603AQ

PRODUCTION

AD603SQ/883B

PRODUCTION

Oct 14, 2015

- 15_0200

Addition of a Polyimide Layer for AD603

AD603ARZ

PRODUCTION

AD603ARZ-REEL

PRODUCTION

AD603ARZ-REEL7

PRODUCTION

Filter by Model

reset

Reset Filters

Part Models

Product Lifecycle

PCN

Apr 9, 2018

- 16_0026

arrow down

Qualify TeamQuest Technology, Inc. for Burn-in and Life Test of Military and Aerospace Devices

5962-9457203MPA

PRODUCTION

AD603SQ/883B

PRODUCTION

Nov 7, 2012

- 12_0199

arrow down

Qualification of New Conductive Silver-Filled Glass Die Attach Adhesive for Cerdip and Ceramic Flatpack (Cerpack) Packages.

Jun 6, 2012

- 12_0066

arrow down

Add capacity for Burn In of Hermetic, 883 & QMLQ/Class B devices at TSSI Cavite

5962-9457203MPA

PRODUCTION

AD603AQ

PRODUCTION

AD603SQ/883B

PRODUCTION

Nov 9, 2011

- 11_0050

arrow down

Transfer of ADI Hermetics Assembly location from Paranaque, Manila to General Trias, Cavite Philippines

5962-9457203MPA

PRODUCTION

AD603AQ

PRODUCTION

AD603SQ/883B

PRODUCTION

Nov 9, 2011

- 11_0182

arrow down

Test Site Transfer from Analog Devices Philippines Inc in Paranaque to Analog Devices General Trias in Cavite, Philippines

5962-9457203MPA

PRODUCTION

AD603AQ

PRODUCTION

AD603SQ/883B

PRODUCTION

Oct 14, 2015

- 15_0200

arrow down

Addition of a Polyimide Layer for AD603

AD603ARZ

PRODUCTION

AD603ARZ-REEL

PRODUCTION

AD603ARZ-REEL7

PRODUCTION

Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 1

EVAL-AD603

AD603 Evaluation Board

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EVAL-AD603

AD603 Evaluation Board

AD603 Evaluation Board

Product Detail

The AD603 evalulation board has built-in flexibility that allows convenient configuration to accommodate most operating configurations. Any dual-polarity power supply capable of providing 20 mA is all that is required, in addition to whatever test equipment the user wishes to perform the intended tests. See the AD603 data sheet available on-line for schematic and further details.

Tools & Simulations

Tools & Simulations 2

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