ADA4084-2 30 V, Low Noise, Rail-to-Rail I/O, Low Power Operational Amplifiers

The ADA4084-1 (single), ADA4084-2 (dual), and ADA4084-4 (quad) are single-supply, 10 MHz bandwidth amplifiers featuring rail-to-rail inputs and outputs. They are guaranteed to operate from +3 V to +30 V (or ±1.5 V to ±15 V).

These amplifiers are well suited for single-supply applications requiring both ac and precision dc performance. The combination of wide bandwidth, low noise, and precision makes the ADA4084-1, ADA4084-2, and ADA4084-4 useful in a wide variety of applications, including filters and instrumentation.

Other applications for these amplifiers include portable telecommunications equipment, power supply control and protection, and use as amplifiers or buffers for transducers with wide output ranges. Sensors requiring a rail-to-rail input amplifier include Hall effect, piezoelectric, and resistive transducers.

The ability to swing rail to rail at both the input and output enables designers to build multistage filters in single-supply systems and to maintain high signal-to-noise ratios.

The ADA4084-1, ADA4084-2, and ADA4084-4 are specified over the industrial temperature range of −40°C to +125°C. The single ADA4084-1 is available in the 5-lead SOT-23 and 8-lead SOIC; the dual ADA4084-2 is available in the 8-lead SOIC, 8-lead MSOP, and 8-lead LFCSP surface-mount packages; and the ADA4084-4 is offered in the 14-lead TSSOP and 16-lead LFCSP.

The ADA4084-1, ADA4084-2, and ADA4084-4 are members of a growing series of high voltage, low noise op amps offered by Analog Devices, Inc.

Applications
  • Battery-powered instrumentation
  • High-side and low-side sensing
  • Power supply control and protection
  • Telecommunications
  • Digital-to-analog converter (DAC) output amplifier
  • Analog-to-digital converter (ADC) input buffer
Features and Benefits
  • Rail-to-rail input/output
  • Low power: 0.625 mA typical per amplifier at ±15 V
  • Gain bandwidth product:
    15.9 MHz at AV = 100 typical
  • Unity-gain crossover:
    9.9 MHz typical
  • −3 dB closed-loop bandwidth:
    13.9 MHz typical at ±15 V
  • Low offset voltage:
    100 μV maximum (SOIC)
  • Unity-gain stable
  • High slew rate: 4.6 V/μs typical
  • Low noise:
    3.9 nV/√Hz typical at 1 kHz
  • Amplifiers
    SPICE Models
    Data Sheets
    Documentnote
    ADA4084-1/ADA4084-2/ADA4084-4: 30 V, Low Noise, Rail-to-Rail Input/Output, Low Power Operational Amplifiers Data Sheet (Rev. H)PDF 945.05 K
    Application Notes
    Documentnote
    AN-849: Using Op Amps as Comparators (Rev. A)PDF 117 kB
    Order Information
    Part NumberPackagePacking QtyTemp RangePrice 100-499Price 1000+RoHS
    ADA4084-2ACPZ-R7 Production8 ld LFCSP (3x3mm, 1.6x1.6mm exposed padREEL 1500-40 to 125C02.85Y
    ADA4084-2ACPZ-RL Production8 ld LFCSP (3x3mm, 1.6x1.6mm exposed padREEL 5000-40 to 125C02.85Y
    ADA4084-2ARMZ Production8 ld MSOPOTH 50-40 to 125C3.492.85Y
    ADA4084-2ARMZ-R7 Production8 ld MSOPREEL 1000-40 to 125C02.85Y
    ADA4084-2ARMZ-RL Production8 ld MSOPREEL 3000-40 to 125C02.85Y
    ADA4084-2ARZ Production8 ld SOICOTH 98-40 to 125C3.492.85Y
    ADA4084-2ARZ-R7 Production8 ld SOICREEL 1000-40 to 125C02.85Y
    ADA4084-2ARZ-RL Production8 ld SOICREEL 2500-40 to 125C02.85Y
    Evaluation Boards
    Part NumberDescriptionPriceRoHS
    EVAL-PRAOPAMP-2CPZDual CP-8 lead LFCSP Evaluation Board20.19Y
    EVAL-PRAOPAMP-2RMZDual RM-8 lead MSOP Evaluation Board20.19Y
    EVAL-PRAOPAMP-2RZDual R-8 lead SOIC Evaluation Board20.19Y
    Reference Materials
    ADA4084-1/ADA4084-2/ADA4084-4: 30 V、低噪声、轨到轨输入/输出、低功耗运算放大器 (Rev. H) ada4084-2
    ADA4084-1/ADA4084-2/ADA4084-4: 30 V, Low Noise, Rail-to-Rail Input/Output, Low Power Operational Amplifiers Data Sheet (Rev. H) ada4084-2
    ADA4084-2:30 V、低噪声、轨到轨I/O、低功耗运算放大器 (Rev. C) ada4084-2
    ADA4084 SPICE Macro-Model (Rev. 2.0) ada4084-2
    AN-849: Using Op Amps as Comparators (Rev. A) adcmp604
    AN-849: 将运算放大器用作比较器 (Rev. 0) adcmp604
    MT-035:运算放大器输入、输出、单电源和轨到轨问题 ad8634
    MT-084: 将运算放大器用作比较器 ada4084-2
    MT-054: 精密运算放大器 ada4522-2
    MT-052:运算放大器噪声指数:不要被误导 ad829
    MT-048:运算放大器噪声关系:1/f噪声、均方根(RMS)噪声与等效噪声带宽 ad829
    MT-047:运算放大器噪声 ad829
    SAR ADC & Driver Quick-Match Guide ad7476
    How High Performance Modular Instruments Enable Greater Applications and... ad7768