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Analog Devices Inc. AMP01NBC
- Part No.:
- AMP01NBC
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- Die
- Datasheet:
-
AMP01NBC.pdf
- Description:
- AMP01 - Low Noise, Precision Ins
- Quantity:
- Payment:
- Shipping:
Inventory:3,744
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Product details
Overview
AMP01NBC from Analog Devices is a low-noise, precision instrumentation amplifier designed for high-accuracy signal conditioning in demanding data acquisition systems. It delivers 50 μV max input offset voltage, 0.3 μV/°C max drift, 0.12 μV p-p (0.1 Hz to 10 Hz) low-frequency noise, ±10 V output drive at ±50 mA, and 125 dB min CMR at G = 1000 - enabling direct amplification of microvolt-level sensor signals over long cables without buffering.
For engineers reviewing the AMP01NBC datasheet, AMP01NBC pinout, AMP01NBC application, or AMP01NBC equivalent, key selection considerations include its wafer-test-limited specifications (e.g., 60 μV VIOS, 4 mV VOOS), 18-pin CERDIP package, gain-setting resistor interface, thermal shutdown protection, and suitability for precision bridge, strain gauge, and medical transducer front-ends where DC accuracy and capacitive-load stability up to 1 μF are critical.
Technical Context
The AMP01NBC implements a three-op-amp instrumentation architecture with separate input and output amplifier supply rails (±VOP, ±V), enabling high-current output stage operation while maintaining ultra-low input bias current (<4 nA) and exceptional common-mode rejection. Its gain is set externally via RG and RS resistors, supporting 0.1 to 10,000 V/V range with ≤0.6% gain equation error.
It features dual nulling networks (VIOS NULL and VOOS NULL), SENSE and REFERENCE terminals for output common-mode control, and built-in thermal shutdown triggered at 165°C junction temperature. The device remains stable driving up to 1 μF capacitive loads - a rare capability among monolithic instrumentation amplifiers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | 60 μV maximum (wafer test limit) - enables sub-100 μV system-level DC error without external trimming. |
| Offset Drift | 0.15 μV/°C maximum - ensures <1 μV total drift over 0°C to 70°C industrial range. |
| Low-Frequency Noise | 0.12 μV p-p (0.1 Hz to 10 Hz) at G = 1000 - supports 16-bit linearity in precision weigh-scale and RTD readout. |
| CMR | 125 dB minimum at G = 1000 - rejects >99.99997% of 60 Hz common-mode interference in noisy industrial environments. |
| Output Drive | ±10 V at ±50 mA - directly drives 200 Ω loads or long shielded cables without external buffer stages. |
| Capacitive Load Stability | Stable with up to 1 μF load - eliminates need for isolation resistors when interfacing with ADC input filters or piezoelectric sensors. |
| Supply Range | ±4.5 V to ±18 V - accommodates both ±5 V logic-compatible and ±15 V legacy industrial systems. |
Pinout & Package
AMP01NBC is supplied in an 18-lead CERDIP (ceramic dual in-line package) with hermetic sealing suitable for military and high-reliability applications. Pin 6 is a factory test pin and must remain unconnected.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2 (RG) | Gain Resistor Connection | External resistor between Pins 1 and 2 sets gain per G = (20 × RS)/RG; supports 0.1–10,000× range. |
| 3 (−IN), 18 (+IN) | Differential Input Terminals | High-impedance (≥1 GΩ) inputs accept low-level sensor signals; IVR = ±10 V min at 25°C. |
| 4, 5 (VOOS NULL) | Output Offset Null | 100 kΩ potentiometer wiper to V− adjusts output offset to <1 mV - critical for zero-scale calibration. |
| 7 (SENSE) | Inverting Amplifier Feedback Sense | Connects to OUTPUT to close feedback loop; enables precise output voltage regulation independent of load. |
| 8 (REFERENCE) | Output Common-Mode Reference | Sets output DC level; tied to ground for bipolar output, or to reference voltage for unipolar systems. |
| 9 (OUTPUT) | Amplified Signal Output | Delivers ±13 V into 2 kΩ; capable of ±50 mA continuous current - supports active filtering and direct ADC driving. |
| 10 (−VOP), 13 (+VOP) | Output Stage Supplies | Independent ±VOP rails isolate high-current output stage from sensitive input amplifiers, improving PSR and reducing crosstalk. |
| 11 (V−), 12 (V+) | Input Stage Supplies | ±V supplies power input op-amps; decoupling required near these pins to maintain 130 dB CMR performance. |
| 14, 15 (RS) | Scale Resistor Connection | Fixed internal resistor network; RS value determines gain scaling factor - matched 2.5 kΩ pair used in standard configuration. |
| 16, 17 (VIOS NULL) | Input Offset Null | 100 kΩ potentiometer wiper to V− trims input offset to <20 μV - eliminates need for external nulling circuitry. |
Key Features
| Feature | Design Value |
|---|---|
| Capacitive-load stability | Guaranteed stable with up to 1 μF load - enables direct connection to anti-aliasing filters without series isolation resistors. |
| Thermal shutdown protection | Activates at 165°C junction temperature - prevents permanent damage during sustained overload or short-circuit conditions. |
| Dual supply rail separation | Independent ±VOP (output) and ±V (input) supplies - improves power supply rejection (>120 dB PSR) and reduces inter-stage coupling. |
| 16-bit linearity at G = 1000 | 0.0007% nonlinearity - supports high-resolution digitization in precision weigh scales and analytical instrumentation. |
| Active guard drive capability | SENSE and REFERENCE pins allow implementation of driven-guard shielding - reduces leakage-induced errors in high-impedance pH or ion-selective electrode interfaces. |
Applications
| Strain Gauge Readout | Medical ECG Front-End |
|---|---|
Use Scenario: Amplifying mV-level Wheatstone bridge outputs from load cells in industrial weighing systems. IC Role / Device Role / Timing Role: Precision instrumentation amplifier providing differential gain, offset nulling, and high CMR to reject motor-drive noise. Use Value: 60 μV max VIOS and 125 dB CMR ensure <0.01% full-scale error across temperature; 1 μF load stability allows integration with 10 Hz RC filter without peaking. | Use Scenario: Conditioning low-amplitude, high-impedance biopotential signals from patient electrodes. IC Role / Device Role / Timing Role: Primary signal conditioner with driven-guard capability via SENSE/REFERENCE pins to minimize electrode-skin interface errors. Use Value: 4 nA max IB and 0.12 μV p-p noise preserve signal integrity for <1 μV QRS complexes; thermal shutdown protects against fault-induced overheating. |
| RTD Temperature Sensing | Industrial Process Current Loop |
Use Scenario: Exciting and amplifying 3-wire Pt100 RTD bridges in PLC analog input modules. IC Role / Device Role / Timing Role: Precision gain block with programmable offset correction (VIOS/VOOS NULL) for linearized temperature output. Use Value: 0.15 μV/°C TCVIOS ensures <0.15 °C drift over 100°C span; ±10 V output swing directly interfaces with 16-bit SAR ADCs. | Use Scenario: Converting 4–20 mA loop current to calibrated 0–10 V output in field transmitter signal conditioning. IC Role / Device Role / Timing Role: High-accuracy current-to-voltage converter with REFERENCE pin used to set zero-current output level. Use Value: 120 dB PSR rejects supply ripple from loop-powered designs; ±50 mA output drive sustains voltage across 500 Ω termination + cable capacitance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar instrumentation amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD8421ARMZ | Lower input bias current (1 nA typ), higher bandwidth (12 MHz), but no thermal shutdown and only 0.1 μF capacitive load stability. | Better for high-speed, low-leakage photodiode or piezoelectric sensor interfaces; unsuitable for high-current or high-capacitance cable-driving roles. | Select AD8421ARMZ when bandwidth >100 kHz and Ib <2 nA are primary; retain AMP01NBC when output drive >±20 mA or 1 μF stability is required. |
| INA128U | Lower quiescent current (700 μA), smaller SO-8 package, but higher VIOS (125 μV max), lower CMR (110 dB), and no independent output supply rails. | Preferred for battery-powered portable instruments; lacks the robustness for industrial 4–20 mA loop interfaces or high-CMRR bridge measurements. | Choose INA128U for space-constrained, low-power designs; AMP01NBC remains optimal for high-accuracy, high-output-drive, high-CMRR applications requiring hermetic packaging. |
Compared with AD8421ARMZ and INA128U, AMP01NBC uniquely combines 1 μF capacitive-load stability, ±50 mA output drive, thermal shutdown, and 18-lead CERDIP packaging - making it the only option among the three qualified for ruggedized, high-fidelity, high-current sensor signal conditioning in extended-temperature industrial environments.
Availability
AMP01NBC is available at Aetrix Electronics and suitable for precision strain gauge readout, medical ECG front-end design, RTD temperature sensing, and industrial 4–20 mA loop conditioning requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for AMP01NBC includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Analog Devices, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA, with design centers and manufacturing facilities worldwide.
The AMP01 product line was developed specifically for high-precision, low-drift instrumentation applications - emphasizing ultra-low offset, exceptional CMR, and robust output drive in harsh electrical environments such as factory automation and medical diagnostics.
FAQ
What is the guaranteed input offset voltage specification for AMP01NBC?
The wafer test limits for AMP01NBC specify a maximum input offset voltage (VIOS) of 60 μV at TA = 25°C, as documented in Table 5 of the Rev. E datasheet. This is tighter than the standard AMP01B grade (100 μV max) and reflects binning to a higher precision segment. The AMP01NBC maintains this 60 μV limit under defined test conditions and is not guaranteed beyond wafer probe - final packaged unit performance may vary slightly due to assembly effects.
Does AMP01NBC support independent input and output supply rails?
Yes, AMP01NBC features fully independent supply connections: V+ and V− power the input amplifiers, while +VOP and −VOP power the high-current output stage. This architecture isolates the sensitive input section from output-stage switching noise and improves power supply rejection ratio (PSR) to >120 dB. Proper decoupling of all four supply pins is essential to achieve specified CMR and noise performance in the final AMP01NBC circuit layout.
Can AMP01NBC drive a 1 μF capacitive load without oscillation?
Yes, AMP01NBC is explicitly characterized and guaranteed stable with capacitive loads up to 1 μF across its full gain range (1 to 1000), as confirmed in Table 5 (Wafer Test Limits) and the General Description. This capability eliminates the need for external isolation resistors when driving anti-aliasing filters, coaxial cables, or piezoelectric sensor interfaces - a key differentiator versus most competing instrumentation amplifiers limited to <10 nF.
What is the function of the SENSE and REFERENCE pins on AMP01NBC?
The SENSE pin (Pin 7) completes the feedback loop for the inverting input amplifier and must be connected to the OUTPUT pin for standard operation; it enables precise closed-loop regulation. The REFERENCE pin (Pin 8) sets the output common-mode voltage - typically grounded for bipolar output, or biased to a reference voltage for unipolar systems. Together, they support active guard drive configurations to reduce leakage errors in high-impedance sensor interfaces.
Is thermal shutdown implemented in AMP01NBC, and how does it behave?
Yes, AMP01NBC includes integrated thermal shutdown that activates at approximately 165°C junction temperature, as stated in Table 3 (Output Rating). When triggered, the output stage disables to prevent permanent damage during sustained overload or output short-circuit conditions. Recovery is automatic upon cooling below the hysteresis threshold (~155°C). This protection is inherent to the die design and applies to all AMP01 variants including AMP01NBC.
AMP01NBC Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- Die
- Packaging:
- Bulk
- Product Status:
- Active
- Amplifier Type:
- Instrumentation
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 4.5V/µs
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- 570 kHz
- Current - Input Bias:
- -
- Voltage - Input Offset:
- -
- Current - Supply:
- 3mA
- Current - Output / Channel:
- 120 mA
- Voltage - Supply Span (Min):
- 9 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- Die
AMP01NBC FAQ
1.How can I place an order for AMP01NBC through Aetrix?
Please submit a Request for Quotation (RFQ) for AMP01NBC on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for AMP01NBC reliable?
The price and inventory of AMP01NBC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AMP01NBC is usually 5 days.
3.What payment methods are accepted for AMP01NBC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AMP01NBC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AMP01NBC?
AMP01NBC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AMP01NBC order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for AMP01NBC?
For technical support, including AMP01NBC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AMP01NBC requirements.
6.How does Aetrix verify that AMP01NBC is sourced from the original manufacturer or authorized distributors?
All AMP01NBC products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that AMP01NBC meets industry standards.
7.What is the process for return or replacement of AMP01NBC?
All AMP01NBC units undergo pre-shipment inspection (PSI). If there is an issue with AMP01NBC, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The AMP01NBC part is unused and in its original packaging.
Return procedure for AMP01NBC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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