AD8132 Low Cost, High Speed Differential Amplifier

The AD8132 is a low cost differential or single-ended input to differential output amplifier with resistor set gain. The AD8132 is a major advancement over op amps for driving differential input ADCs or for driving signals over long lines. The AD8132 has a unique internal feedback feature that provides output gain and phase matching balanced to −68 dB at 10 MHz, suppressing harmonics and reducing radiated EMI.

Manufactured using the next-generation of Analog Devices, Inc., XFCB bipolar process, the AD8132 has a −3 dB bandwidth of 350 MHz and delivers a differential signal with −99 dBc SFDR at 5 MHz, despite its low cost. The AD8132 eliminates the need for a transformer with high performance ADCs, preserving the low frequency and dc information. The common-mode level of the differential output is adjustable by applying a voltage on the VOCM pin, easily level shifting the input signals for driving single-supply ADCs. Fast overload recovery preserves sampling accuracy.

The AD8132 is also used as a differential driver for the trans-mission of high speed signals over low cost twisted pair or coaxial cables. The feedback network can be adjusted to boost the high frequency components of the signal. The AD8132 is used for either analog or digital video signals or for other high speed data trans-mission. The AD8132 is capable of driving either a Category 3 or Category 5 twisted pair or coaxial cable with minimal line attenuation. The AD8132 has considerable cost and performance improvements over discrete line driver solutions.

Differential signal processing reduces the effects of ground noise that plagues ground-referenced systems. The AD8132 can be used for differential signal processing (gain and filtering) throughout a signal chain, easily simplifying the conversion between differential and single-ended components.

The AD8132W is the automotive grade version, qualified for 125°C operation per the AEC-Q100. See the Automotive Products section for more details.

The AD8132 is available in both 8-lead SOIC and 8-lead MSOP packages for operation over the extended industrial temperature range of −40°C to +125°C.

Applications
  • Low power differential ADC drivers
  • Differential gain and differential filtering
  • Video line drivers
  • Differential in/out level shifting
  • Single-ended input to differential output drivers
  • Active transformers
  • Automotive driver assistance
  • Automotive infotainment
Features and Benefits
  • High speed
    350 MHz, −3 dB bandwidth
    1200 V/μs slew rate
  • Resistor set gain
  • Internal common-mode feedback
  • Improved gain and phase balance: −68 dB @ 10 MHz
  • Separate input to set the common-mode output voltage
  • Low distortion: −99 dBc SFDR @ 5 MHz, 800 Ω load
  • Low power: 10.7 mA @ 5 V
  • Power supply range: +2.7 V to ±5.5 V
  • Fully AEC-Q100 qualified (AD8132W)
  • Amplifiers
    SPICE Models
    Data Sheets
    Documentnote
    AD8132: Low-Cost, High Speed Differential Amplifier Data Sheet (Rev. I)PDF 441 kB
    Application Notes
    Documentnote
    AN-1363: Meeting Biasing Requirements of Externally Biased RF/Microwave Amplifiers with Active Bias Controllers (Rev. 0)PDF 804.11 K
    AN-282: Fundamentals of Sampled Data SystemsPDF 2131 kB
    AN-0990: Terminating a Differential Amplifier in Single-Ended Input Applications (Rev. 0)PDF 181 kB
    AN-0992: Active Filter Evaluation Board for Differential Amplifiers (Rev. 0)PDF 85 kB
    AN-1026: High Speed Differential ADC Driver Design Considerations (Rev. A)PDF 355 kB
    AN-649: Using the Analog Devices Active Filter Design Tool (Rev. 0)PDF 5.3 M
    AN-584: Using the AD813X Differential Amplifier (Rev. 0)PDF 174 kB
    AN-589: Ways to Optimize the Performance of a Difference Amplifier (Rev. B)PDF 115 kB
    User Guides
    Documentnote
    UG-888: Evaluation Board for Differential Amplifiers Offered in 8-Lead MSOP Packages (Rev. 0)PDF 382.52 K
    UG-474: Evaluation Board for Differential Amplifiers Offered in 8-Lead SOIC PackagesPDF 263 kB
    Order Information
    Part NumberPackagePacking QtyTemp RangePrice 100-499Price 1000+RoHS
    AD8132ARMZ Production8 ld MSOPOTH 50-40 to 125C1.971.67Y
    AD8132ARMZ-REEL Production8 ld MSOPREEL 3000-40 to 125C01.67Y
    AD8132ARMZ-REEL7 Production8 ld MSOPREEL 1000-40 to 125C01.67Y
    AD8132ARZ Production8 ld SOICOTH 98-40 to 125C1.971.67Y
    AD8132ARZ-R7 Production8 ld SOICREEL 1000-40 to 125C01.67Y
    AD8132ARZ-RL Production8 ld SOICREEL 2500-40 to 125C01.67Y
    AD8132WARMZ-R7 Production8 ld MSOPREEL 1000-40 to 125C01.83Y
    Evaluation Boards
    Part NumberDescriptionPriceRoHS
    EVAL-FDA-1CPZ-16Evaluation Bare Board for 16 Lead LFCSP18.25Y
    EVAL-FDA-1RMZ-8Evaluation Bare Board for 8 Lead MSOP18.25Y
    EVAL-FDA-1RZ-8Evaluation Bare Board for 8 Lead SOIC18.25Y
    FDA-FILTER-CPZEvaluation Board Filter for LFCSP18.25Y
    Reference Materials
    AD8132:低成本、高速差分放大器 (Rev. I) ad8132
    AD8132: Low-Cost, High Speed Differential Amplifier Data Sheet (Rev. I) ad8132
    AD8132 SPICE Macro-Model ad8132
    AN-1363: 利用有源偏置控制器满足外部偏置射频/微波放大器的偏置要求 (Rev. 0) hmc8120
    AN-1363: Meeting Biasing Requirements of Externally Biased RF/Microwave Amplifiers with Active Bias Controllers (Rev. 0) hmc8120
    AN-282: Fundamentals of Sampled Data Systems ad1674
    AN-0990: Terminating a Differential Amplifier in Single-Ended Input Applications (Rev. 0) ad8138
    AN-0992: Active Filter Evaluation Board for Differential Amplifiers (Rev. 0) ad8138
    AN-1026: High Speed Differential ADC Driver Design Considerations (Rev. A) ad8351
    AN-1026: 高速差分ADC驱动器设计考虑[中文版] (Rev. 0) ad8351
    AN-589: 差动放大器性能优化方法 (Rev. 0) ad8350
    AN-584: AD813x的运用 (Rev. 0) ad8138
    AN-0990: 在单端输入应用中连接差分放大器 (Rev. 0) ad8138
    AN-0992: 用于差分放大器的有源滤波器评估板 (Rev. 0) ad8138
    AN-282: 采样数据系统基本原理[中文版] (Rev. A) ad75019
    AN-649: Using the Analog Devices Active Filter Design Tool (Rev. 0) ad8350
    AN-584: Using the AD813X Differential Amplifier (Rev. 0) ad8138
    AN-589: Ways to Optimize the Performance of a Difference Amplifier (Rev. B) ad8350
    UG-888: Evaluation Board for Differential Amplifiers Offered in 8-Lead MSOP Packages (Rev. 0) ad8138
    UG-474: Evaluation Board for Differential Amplifiers Offered in 8-Lead SOIC Packages ad8138
    MT-218: 多反馈带通滤波器设计示例 ad8138
    MT-076:差分驱动器分析 ad8138
    MT-075: Differential Drivers for High Speed ADCs Overview ad6672
    Amplifiers for Video Distribution ad8132
    High Speed Amplifiers Selection Table ad8138