Overview

Features and Benefits

  • High Speed
    AD8130: 270 MHz, 1090 V/µs @ G = +1
    AD8129: 200 MHz, 1060 V/µs @ G = +10
  • High CMRR
    94 dB min, dc to 100 kHz
    80 dB min @ 2 MHz
    70 dB @ 10 MHz
  • Low noise
    AD8130: 12.5 nV/√Hz
    AD8129: 4.5 nV/√Hz
  • High input impedance: 1 MΩ differential
  • Input common-mode range ±10.5 V
  • Low distortion, 1 V p-p @ 5 MHz:
    AD8130, -79 dBc worst harmonic @ 5 MHz
    AD8129, -74 dBc worst harmonic @ 5 MHz
  • User-adjustable gain
    No external components for G = +1
  • Power supply range +4.5 V to ±12.6 V
  • Power-down

Product Details

The AD8129/AD8130 are designed as receivers for the transmission of high speed signals over twisted-pair cables to work with the AD8131 or AD8132 drivers. Either can be used for analog or digital video signals and for high speed data transmission.

The AD8129/AD8130 are differential-to-single-ended amplifiers with extremely high CMRR at high frequency. Therefore, they can also be effectively used as high speed instrumentation amps or for converting differential signals to single-ended signals.

The AD8129 is a low noise, high gain (10 or greater) version intended for applications over very long cables, where signal attenuation is significant. The AD8130 is stable at a gain of 1 and can be used for applications where lower gains are required. Both have user-adjustable gain to help compensate for losses in the transmission line. The gain is set by the ratio of two resistor values. The AD8129/AD8130 have very high input impedance on both inputs, regardless of the gain setting.

The AD8129/AD8130 have excellent common-mode rejection (70 dB @ 10 MHz), allowing the use of low cost, unshielded twisted-pair cables without fear of corruption by external noise sources or crosstalk. The AD8129/AD8130 have a wide power supply range from single +5 V to ±12 V, allowing wide common-mode and differential-mode voltage ranges while maintaining signal integrity. The wide common-mode voltage range enables the driver-receiver pair to operate without isolation transformers in many systems where the ground potential difference between drive and receive locations is many volts. The AD8129/AD8130 have considerable cost and performance improvements over op amps and other multiamplifier receiving solutions.

Applications

  • High speed differential line receivers
  • Differential-to-single-ended converters
  • High speed instrumentation amps
  • Level shifting

Product Lifecycle icon-recommended Production

At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

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Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.