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Analog Devices Inc. AMP01GSZ
- Part No.:
- AMP01GSZ
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
AMP01GSZ.pdf
- Description:
- IC INST AMP 1 CIRCUIT 20SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:113
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Product details
Overview
AMP01GSZ from Analog Devices is a low-noise, precision instrumentation amplifier designed for high-accuracy signal conditioning in data acquisition systems. It delivers 50 μV max input offset voltage, 0.3 μV/°C max drift, 0.12 μV p-p (0.1–10 Hz) input noise, ±10 V output 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 AMP01GSZ datasheet, AMP01GSZ pinout, AMP01GSZ application, or AMP01GSZ equivalent, key selection criteria include its capacitive-load stability up to 1 μF, gain range of 0.1–10,000 via external resistors, thermal shutdown protection, and dual-supply operation from ±4.5 V to ±18 V - critical for precision industrial, medical, and test equipment designs.
Technical Context
The AMP01GSZ integrates a three-op-amp instrumentation architecture with a high-current output stage capable of driving heavy loads and capacitive cables directly. Its input stage features laser-trimmed thin-film resistors and matched transistor pairs to achieve <0.3 μV/°C TCVIOS and >125 dB CMR at G = 1000.
Gain is set externally by resistor ratio (G = 20 × RS/RG) with 10 ppm/°C temperature coefficient; the output stage supports voltage or current generation modes and includes active guard drive capability via SENSE and REFERENCE pins for improved cable-driven common-mode rejection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | 20 μV typ / 50 μV max at 25°C - eliminates need for external nulling in most precision sensor interfaces. |
| CMR @ G=1000 | 125 dB min - rejects >99.99997% of common-mode interference in noisy industrial environments. |
| Low-Frequency Noise | 0.12 μV p-p (0.1–10 Hz) - preserves resolution for DC-coupled thermocouple and strain gauge measurements. |
| Output Drive | ±10 V at ±50 mA - drives 50 Ω loads directly and sustains stable operation with up to 1 μF capacitive load. |
| Gain Range | 0.1 to 10,000 - configurable via two external resistors, supporting both attenuating and high-gain signal conditioning. |
| Supply Range | ±4.5 V to ±18 V - compatible with standard bipolar lab supplies and industrial ±15 V rails. |
| Thermal Shutdown | Activates at 165°C junction - protects output transistors during sustained overload or short-circuit conditions. |
Pinout & Package
AMP01GSZ is packaged in a 20-lead SOIC (Small Outline Integrated Circuit) with gull-wing leads, RoHS-compliant, and rated for −25°C to +85°C operation (F grade).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 20 | RG | Gain-setting resistor connection points - defines closed-loop gain as G = 20 × RS/RG; requires 100 Ω–200 kΩ resistor. |
| 3 | −IN | Inverting input terminal - accepts differential signal referenced to REFERENCE pin; high-impedance node (≥1 GΩ). |
| 4, 5 | VOOS NULL | Output offset voltage nulling terminals - connect 100 kΩ potentiometer wiper to V− to trim VOOS to <1 mV. |
| 7 | SENSE | Inverting amplifier feedback return - normally tied to OUTPUT; enables active guard drive when driven separately. |
| 8 | REFERENCE | Output common-mode voltage reference - sets DC level of OUTPUT; typically grounded or connected to system reference. |
| 9 | OUTPUT | Main amplified output - delivers full ±13 V swing into 2 kΩ and ±4 V into 50 Ω, with thermal shutdown protection. |
| 10, 13 | −VOP, +VOP | Separate supply pins for output stage - decouples output amplifier power from input stage, improving PSR and load regulation. |
| 11, 12 | V−, V+ | Supply pins for input amplifiers - support independent biasing and reduce crosstalk between input and output sections. |
| 14, 15 | RS | Scale resistor connection - fixed internal 47.5 kΩ resistor pair; RS value determines gain scaling factor with RG. |
| 16, 17 | VIOS NULL | Input offset voltage nulling terminals - connect 100 kΩ potentiometer wiper to V− to trim VIOS below 20 μV. |
| 18 | +IN | Noninverting input terminal - high-impedance, low-bias-current (≤4 nA) node for precision differential sensing. |
Key Features
| Feature | Design Value |
|---|---|
| Capacitive-load stability | Stable with up to 1 μF load - enables direct driving of long shielded cables without external buffer or isolation. |
| 16-bit linearity at G=1000 | 0.0007% nonlinearity - supports high-resolution ADCs (e.g., 16-bit SAR or sigma-delta) without gain-induced distortion. |
| Dual-supply architecture | Independent V+/V− for input stage and +VOP/−VOP for output stage - improves PSR (>120 dB) and reduces supply coupling. |
| Active guard drive support | SENSE and REFERENCE pins allow guard signal generation - reduces cable leakage and capacitance errors in high-Z sensor interfaces. |
| Configurable as precision op amp | Can be wired as high-output-current op amp (e.g., replacing OPA548 + OPA189 combo) - simplifies BOM in buffer-intensive designs. |
Applications
| Strain Gauge Readout | Medical ECG Signal Conditioning |
|---|---|
Use Scenario: Amplifying µV-level Wheatstone bridge outputs from load cells or pressure sensors in industrial weighing systems. IC Role / Device Role / Timing Role: Precision instrumentation amplifier providing programmable gain, ultra-low noise, and high CMR to extract weak differential signals amid motor-drive EMI. Use Value: Eliminates need for external op-amp buffers and passive filtering; 0.12 μV p-p noise preserves 20-bit effective resolution at G = 1000. | Use Scenario: Front-end amplification of biopotential signals from patient electrodes in portable ECG monitors. IC Role / Device Role / Timing Role: Primary signal conditioner rejecting 50/60 Hz mains interference while preserving ST-segment fidelity and low-frequency heart rate dynamics. Use Value: 125 dB CMR at G = 1000 and 0.3 μV/°C drift ensure stable baseline and minimal calibration drift across clinical operating temperatures. |
| High-Speed Data Acquisition | Industrial Process Control Loop |
Use Scenario: Signal conditioning stage before 1 MSPS SAR ADCs in automated test equipment capturing transient waveforms. IC Role / Device Role / Timing Role: High-slew-rate (4.5 V/μs), fast-settling (50 μs to 0.01%) instrumentation amplifier with wide bandwidth (26 MHz GBW). Use Value: Maintains accuracy on 20 V step inputs without overshoot or ringing - critical for time-domain integrity in digitized waveforms. | Use Scenario: Isolating and amplifying 4–20 mA loop sensor outputs or RTD bridge voltages in PLC analog input modules. IC Role / Device Role / Timing Role: Robust front-end amplifier with thermal shutdown, ±18 V supply tolerance, and 50 mA output drive for driving long-haul analog lines. Use Value: Direct interface to 50 Ω transmission lines and ability to sustain indefinite short-circuit conditions improve field reliability and reduce system-level protection overhead. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar instrumentation amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD8421ARZ | Lower input bias current (0.5 nA vs. 4 nA), higher bandwidth (12 MHz vs. 26 kHz at G=1000), but lower output drive (±20 mA vs. ±50 mA). | Better suited for high-Z pH or ion-selective electrodes; less ideal for driving 50 Ω cables or high-current loads. | Select AD8421ARZ when ultra-low IB and speed outweigh output current needs; AMP01GSZ preferred for cable-driving and high-current precision. |
| INA163UA | Lower noise (1.1 nV/√Hz vs. 5 nV/√Hz at G=1000), no separate VOP pins, fixed gain options only - lacks programmable gain and thermal shutdown. | Optimized for audio-grade low-noise preamps; not rated for industrial temp range or high-output applications. | Choose INA163UA for cost-sensitive, fixed-gain audio or microphone paths; AMP01GSZ remains superior for programmable, rugged industrial DAQ. |
Compared with AD8421ARZ and INA163UA, the AMP01GSZ uniquely combines high output current (±50 mA), 1 μF capacitive-load stability, and programmable gain (0.1–10,000) - making it the only option among the three capable of direct cable driving without external buffering in harsh environments.
Availability
AMP01GSZ is available at Aetrix Electronics and suitable for industrial process control, medical diagnostics equipment, and high-precision test instrumentation requiring stable component supply and long-term manufacturability.
Supply support for AMP01GSZ 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 Wilmington, MA.
The AMP01 product line was engineered specifically for high-accuracy, low-drift instrumentation amplifier applications - targeting sensor signal conditioning where offset, noise, and stability over temperature and time are critical.
FAQ
What is the operating temperature range for the AMP01GSZ?
The AMP01GSZ is specified for −25°C to +85°C ambient operation (F grade). This range is validated per Analog Devices' Rev. F datasheet and aligns with industrial-grade requirements for programmable logic controllers and factory automation systems. The device maintains 50 μV max input offset voltage and 125 dB min CMR across this full range.
Can the AMP01GSZ drive a 50 Ω load directly?
Yes, the AMP01GSZ can drive a 50 Ω load directly, delivering ±2.5 V minimum output swing (±4.0 V typical) with ≤0.01% settling in 12 μs at G = 1. Its dedicated +VOP/−VOP supply pins and thermal shutdown circuit enable safe, sustained operation into low-impedance loads - a key differentiator versus standard instrumentation amplifiers.
How is gain configured on the AMP01GSZ?
Gain on the AMP01GSZ is set externally using two resistors: RG (connected between Pins 1 and 20) and RS (Pins 14 and 15). The gain equation is G = (20 × RS)/RG, supporting a continuous range from 0.1 to 10,000. For example, RG = 2 kΩ yields G = 100 when RS = 10 kΩ. Gain temperature coefficient is 10 ppm/°C maximum.
Does the AMP01GSZ require external nulling components?
The AMP01GSZ includes dedicated VIOS NULL (Pins 16/17) and VOOS NULL (Pins 4/5) terminals for precision trimming. A 100 kΩ potentiometer wired with wiper to V− allows adjustment of input offset to <20 μV and output offset to <1 mV. While not always required due to its 20 μV typical VIOS, nulling is recommended for sub-16-bit system accuracy.
What is the purpose of the SENSE and REFERENCE pins on the AMP01GSZ?
The SENSE pin (Pin 7) returns the inverting amplifier's feedback path and enables active guard drive when driven independently; the REFERENCE pin (Pin 8) sets the output common-mode voltage, typically grounded. Together, they allow the AMP01GSZ to drive shielded cables with matched guard signals - reducing leakage current and capacitive coupling errors in high-impedance sensor interfaces.
AMP01GSZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 20-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tube
- 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:
- 2 nA
- Voltage - Input Offset:
- 40 µV
- Current - Supply:
- 3mA
- Current - Output / Channel:
- 120 mA
- Voltage - Supply Span (Min):
- 9 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-SOIC
AMP01GSZ FAQ
1.How can I place an order for AMP01GSZ through Aetrix?
Please submit a Request for Quotation (RFQ) for AMP01GSZ 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 AMP01GSZ reliable?
The price and inventory of AMP01GSZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AMP01GSZ is usually 5 days.
3.What payment methods are accepted for AMP01GSZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AMP01GSZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AMP01GSZ?
AMP01GSZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AMP01GSZ 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 AMP01GSZ?
For technical support, including AMP01GSZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AMP01GSZ requirements.
6.How does Aetrix verify that AMP01GSZ is sourced from the original manufacturer or authorized distributors?
All AMP01GSZ 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 AMP01GSZ meets industry standards.
7.What is the process for return or replacement of AMP01GSZ?
All AMP01GSZ units undergo pre-shipment inspection (PSI). If there is an issue with AMP01GSZ, 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 AMP01GSZ part is unused and in its original packaging.
Return procedure for AMP01GSZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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