AD8352:  2 GHz Ultralow Distortion Differential RF/IF Amplifier

The AD8352 is a high performance differential amplifier optimized for RF and IF applications. It achieves better than 80 dB SFDR performance at frequencies up to 200 MHz, and 65 dB beyond 500 MHz, ...More

AD8352:  2 GHz Ultralow Distortion Differential RF/IF Amplifier

Product Description

The AD8352 is a high performance differential amplifier optimized for RF and IF applications. It achieves better than 80 dB SFDR performance at frequencies up to 200 MHz, and 65 dB beyond 500 MHz, making it an ideal driver for high speed 12-bit to 16-bit analog-to-digital converters (ADCs).

Unlike other wideband differential amplifiers, the AD8352 has buffers that isolate the gain setting resistor (RG) from the signal inputs. As a result, the AD8352 maintains a constant 3 kΩ input resistance for gains of 3 dB to 25 dB, easing matching and input drive requirements. The AD8352 has a nominal 100 Ω differential output resistance.

The device is optimized for wideband, low distortion performance at frequencies beyond 500 MHz. These attributes, together with its wide gain adjust capability, make this device the amplifier of choice for general-purpose IF and broadband applications where low distortion, noise, and power are critical. It is ideally suited for driving not only ADCs, but also mixers, pin diode attenuators, SAW filters, and multi-element discrete devices. The device is available in a compact 3 mm × 3 mm, 16-lead LFCSP and operates over a temperature range of −40°C to +85°C.


Applications
  • Differential ADC drivers
  • Single-ended-to-differential conversion
  • RF/IF gain blocks
  • SAW filter interfacing

    • Features

    • −3 dB bandwidth of 2.2 GHz (AV = 10 dB)
    • Single resistor gain adjust: 3 dB < AV < 25 dB
    • Single resistor and capacitor distortion adjust
    • Input resistance: 3 kΩ, independent of gain (AV)
    • Differential or single-ended input to differential output
    • Low noise input stage: 2.7 nV/√Hz RTI @ AV = 10 dB
    • Low broadband distortion:
      10 MHz: −86 dBc HD2, −82 dBc HD3
      70 MHz: −84 dBc HD2, −82 dBc HD3
      190 MHz: −81 dBc HD2, −87 dBc HD3
    • OIP3 of 41 dBm @ 150 MHz
    • Slew rate: 8 V/ns
    • Fast settling and overdrive recovery of 2 ns
    • See data sheet for additional Features

    Verified Circuits Using This Part

    Verified Circuits are designed for ease of use and proven to work by ADI applications engineers. To learn more about Verified Circuits from ADI, please visit Verified Circuits Home.

    Circuit Diagram

    Diagrams

    AD8352 Diagram
    Functional Block Diagram for AD8352

    技术指标

    Supply Voltage (V) +5.5V
    -3 dB BW (MHz) 2200MHz
    Spectral Noise (nV/rtHz) 2.6nV/rtHz
    Supply Current (max) 37mA
    Package 16-Lead LFCSP

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