AMP01 Low Noise, Precision Instrumentation Amplifier

The AMP01 is a monolithic instrumentation amplifier designed for high-precision data acquisition and instrumentation applications. The design combines the conventional features of an instrumentation amplifier with a high current output stage. The output remains stable with high capacitance loads (1 µF), a unique ability for an instrumentation amplifier. Consequently, the AMP01 can amplify low level signals for transmission through long cables without requiring an output buffer. The output stage may be configured as a voltage or current generator.

Input offset voltage is very low (20 µV) which generally eliminates the external null potentiometer. Temperature changes have minimal effect on offset; TCVIOS is typically 0.15 µV/°C. Excellent low-frequency noise performance is achieved with a minimal compromise on input protection. Bias current is very low, less than 10 nA over the military temperature range. High common-mode rejection of 130 dB, 16-bit linearity at a gain of 1000, and 50 mA peak output current are achievable simultaneously. This combination takes the instrumentation amplifier one step further towards the ideal amplifier.

AC performance complements the superb dc specifications. The AMP01 slews at 4.5 V/µs into capacitive loads of up to 15 nF, settles in 50 µs to 0.01% at a gain of 1000, and boasts a healthy 26 MHz gain-bandwidth product. These features make the AMP01 ideal for high speed data-acquisition systems.

Gain is set by the ratio of two external resistors over a range of 0.1 to 10,000. A very low gain-temperature-coefficient of 10 ppm/°C is achievable over the whole gain range. Output voltage swing is guaranteed with three load resistances; 50 Ohm, 500 Ohm, and 2 kOhm. Loaded with 500 Ohm, the output delivers ±13.0 V minimum. A thermal shutdown circuit prevents destruction of the output transistors during overload conditions.

The AMP01 can also be configured as a high performance operational amplifier. In many applications, the AMP01 can be used in place of op amp/power-buffer combinations.

Features and Benefits
  • Low Offset Voltage: 50 µV Max
  • Very Low Offset Voltage Drift: 0.3 µV/°C Max
  • Low Noise: 0.12 µV p-p (0.1 Hz to 10 Hz)
  • Excellent Output Drive: ±10 V at ±50 mA
  • Capacitive Load Stability: to 1 µF
  • Gain Range: 0.1 to 10,000
  • Excellent Linearity: 16-Bit at G = 1000
  • High CMR: 125 dB min (G = 1000)
  • Low Bias Current: 4 nA Max
  • May Be Configured as a Precision Op Amp
  • Output-Stage Thermal Shutdown
  • Available in Die Form
  • Amplifiers
    SPICE Models
    Data Sheets
    Documentnote
    AMP01: Low Noise, Precision Instrumentation Amplifier Data Sheet (Rev. D)PDF 244 kB
    AMP01: Military Data Sheet
    Application Notes
    Documentnote
    AN-282: Fundamentals of Sampled Data SystemsPDF 2131 kB
    AN-244: A User's Guide to I.C. Instrumentation AmplifiersPDF 522 kB
    AN-245: Instrumentation Amplifiers Solve Unusual Design ProblemsPDF 543 kB
    AN-671: Reducing RFI Rectification Errors in In-Amp CircuitsPDF 208 kB
    AN-589: Ways to Optimize the Performance of a Difference Amplifier (Rev. B)PDF 115 kB
    Technical Books
    Documentnote
    Order Information
    Part NumberPackagePacking QtyTemp RangePrice 100-499Price 1000+RoHS
    AMP01AX Production18 ld CerDipOTH 21-55 to 125C37.3337.33N
    AMP01BX Production18 ld CerDipOTH 21-55 to 125C40.8240.82N
    AMP01EX Production18 ld CerDipOTH 21-25 to 85C30.8527.87N
    AMP01FX Production18 ld CerDipOTH 21-25 to 85C16.0314.48N
    AMP01GSZ Production20 ld SOIC - WideOTH 370 to 70C11.5610.44Y
    AMP01GSZ-REEL Production20 ld SOIC - WideREEL 10000 to 70C010.44Y
    AMP01NBC ProductionCHIPS OR DIEREEL 9625C00Y
    Reference Materials
    AMP01: Low Noise, Precision Instrumentation Amplifier Data Sheet (Rev. D) amp01
    AMP01 SPICE Macro-Model amp01
    AMP01: Military Data Sheet amp01
    AN-282: Fundamentals of Sampled Data Systems ad1674
    AN-671: 降低仪表放大器电路中的射频干扰整流误差 (Rev. 0) amp03
    AN-244: IC 仪表放大器用户指南 amp03
    AN-589: 差动放大器性能优化方法 (Rev. 0) ad8350
    AN-282: 采样数据系统基本原理[中文版] (Rev. A) ad75019
    AN-244: A User's Guide to I.C. Instrumentation Amplifiers amp03
    AN-245: Instrumentation Amplifiers Solve Unusual Design Problems amp03
    AN-671: Reducing RFI Rectification Errors in In-Amp Circuits amp03
    AN-589: Ways to Optimize the Performance of a Difference Amplifier (Rev. B) ad8350
    Auto-Zero Amplifiers ad693
    The AD8221 - Setting a New Industry Standard for Instrumentation Amplifiers amp03