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Analog Devices Inc. AD8271ARMZ
- Part No.:
- AD8271ARMZ
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
AD8271ARMZ.pdf
- Description:
- IC OPAMP PGA 1 CIRCUIT 10MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,207
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Product details
Overview
AD8271ARMZ from Analog Devices is a precision programmable-gain difference amplifier with integrated laser-trimmed resistors, configured as a high-accuracy difference amplifier (gain = ½, 1, or 2) or over 40 single-ended amplifiers (gain = −2 to +3). It delivers 15 MHz bandwidth, 30 V/μs slew rate, and 0.08% max gain error, enabling high-fidelity signal conditioning in ADC driver and instrumentation applications.
For engineers reviewing the AD8271ARMZ datasheet, AD8271ARMZ pinout, AD8271ARMZ application, or AD8271ARMZ equivalent, this page provides verified technical context, real-world design meaning for key specs, validated pin functions, confirmed alternative options, and supply support details for industrial embedded and test equipment designs.
Technical Context
The AD8271ARMZ integrates a low-distortion op amp with seven on-die laser-trimmed thin-film resistors (10 kΩ and 20 kΩ), enabling precise ratio-matched configurations without external components. Its internal resistor network supports difference amplifier modes (G = ½/1/2) and >40 single-ended gains via flexible pin interconnection.
It operates from ±2.5 V to ±18 V dual supplies (or unbalanced up to 36 V total), features rail-to-rail input voltage range (−VS −0.4 V to +VS +0.4 V), and maintains 80 dB minimum CMRR at G = 2. The device is specified across −40°C to +85°C and achieves 1.5 μV p-p 0.1 Hz–10 Hz input-referred noise at G = 1.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Options | Fixed difference amplifier gains of ½, 1, or 2; >40 single-ended gains from −2 to +3 - enables flexible signal scaling without external resistors. |
| Bandwidth | 15 MHz at G = 1 - supports fast settling for high-speed data acquisition systems sampling up to ~1 MSPS. |
| Gain Error | 0.08% maximum (B grade) - ensures <±80 ppm absolute gain accuracy for precision measurement front-ends. |
| CMRR | 80 dB minimum at DC–1 kHz (G = 2) - rejects common-mode interference in noisy industrial sensor environments. |
| Supply Current | 2.6 mA maximum - enables low-power operation in battery-backed instrumentation and portable ATE. |
| Input Voltage Range | −VS −0.4 V to +VS +0.4 V - supports true rail-to-rail input operation, simplifying interface with sensors and DACs. |
| Slew Rate | 30 V/μs - handles large-signal transients without distortion in sine/cosine encoder and audio line-driver applications. |
Pinout & Package
AD8271ARMZ is housed in a 10-lead MSOP package (3 mm × 3 mm, 0.5 mm pitch), optimized for space-constrained PCB layouts while maintaining thermal performance (θJA = 141.9°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P1, P2 | Noninverting Input (10 kΩ resistor to op amp +) | Used for differential or single-ended noninverting inputs; P1/P2 provide parallel path options for gain configuration. |
| P3, P4 | Reference Input (20 kΩ resistor to op amp +) | Set midsupply or custom reference voltage; critical for level translation and offset control in ADC driver circuits. |
| N1, N2, N3 | Inverting Input (10 kΩ resistor to op amp −) | Support feedback network construction; N1/N2/N3 enable configurable gain-setting ratios and output polarity control. |
| +VS, −VS | Positive/Negative Supply Rails | Accept ±2.5 V to ±18 V (or unbalanced up to 36 V); bypassing with 0.1 μF + 10 μF per rail required for stability. |
| OUT | Amplifier Output | Drives 2 kΩ loads with ±13.8 V swing (±15 V supplies); short-circuit protected (100 mA source / 60 mA sink). |
Key Features
| Feature | Design Value |
|---|---|
| Laser-trimmed internal resistors | Ratio-matched 10 kΩ/20 kΩ thin-film networks guarantee ≤10 ppm/°C gain drift and eliminate external resistor matching errors. |
| Configurable gain architecture | Single IC supports difference amplifier (G = ½/1/2) and >40 single-ended gains - reduces BOM count and layout complexity. |
| Rail-to-rail input range | Operates with inputs extending 0.4 V beyond supply rails - accommodates wide-output sensors and DACs without level-shifting circuitry. |
| Low 0.1 Hz–10 Hz noise | 1.5 μV p-p input-referred noise at G = 1 - preserves resolution in precision weigh-scale and medical sensor signal chains. |
| High PSRR & CMRR | ≥80 dB CMRR (DC–1 kHz) and ≥100 dB PSRR - maintains accuracy in electrically noisy industrial power-supply monitoring systems. |
Applications
| ADC Driver | Instrumentation Amplifier Building Block |
|---|---|
Use Scenario: Driving 16-bit SAR or sigma-delta ADCs in industrial process controllers where sensor signals require precise scaling and offset adjustment before digitization. IC Role / Device Role / Timing Role: Precision difference amplifier configured at G = 1 with midsupply reference, providing low-noise, low-distortion buffered output to ADC input. Use Value: 0.08% gain error and 15 MHz bandwidth ensure full-scale accuracy and settle within 1 µs to 0.01%, minimizing conversion latency and quantization uncertainty. |
Use Scenario: Constructing 3-op-amp instrumentation amplifiers for bridge-based strain gauge or RTD measurements in harsh factory-floor environments. IC Role / Device Role / Timing Role: Serves as the precision gain stage (G = 10–100 via external resistors) with matched internal resistors ensuring stable common-mode rejection. Use Value: 80 dB CMRR at G = 2 and 10 ppm/°C gain drift maintain measurement integrity across temperature swings without recalibration. |
| Level Translator | Automatic Test Equipment (ATE) |
Use Scenario: Converting ±10 V sensor outputs to 0–5 V ranges compatible with microcontroller ADCs in embedded condition-monitoring systems. IC Role / Device Role / Timing Role: Single-ended amplifier (G = 0.5) with P3 referenced to +2.5 V, shifting and scaling bipolar input to unipolar output. Use Value: Integrated 20 kΩ reference resistors eliminate external bias networks, reducing component count and board area by >30% vs discrete solutions. |
Use Scenario: Signal conditioning in modular ATE channel cards requiring fast settling, low THD+N, and programmable gain for multi-sensor DUT testing. IC Role / Device Role / Timing Role: High-speed difference amplifier (G = 1) driving multiplexed ADCs, with 30 V/μs slew rate enabling 10 V step response in <800 ns. Use Value: 141 dB THD+N at ±5 V supplies and 1.5 μV p-p low-frequency noise ensure sub-LSB distortion in 20-bit test system accuracy requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision difference amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD8270ARMZ | Dual-channel version with identical gain options, bandwidth (15 MHz), and supply range; higher quiescent current (3.2 mA/channel). | Required when two independent programmable-gain paths are needed on one board - e.g., simultaneous voltage/current sensing in motor drives. | Select AD8270ARMZ only if dual-channel integration justifies 2× supply current and larger footprint; not drop-in compatible due to different pinout. |
| INA149IDR | Higher CMRR (100 dB min), wider supply (±2.5 V to ±18 V), but fixed G = 1 only and no single-ended configurations. | Better suited for ultra-high common-mode rejection applications like isolated shunt monitoring, but lacks programmable gain flexibility. | Choose INA149IDR when CMRR >90 dB is mandatory and gain is fixed; avoid if gain reconfiguration or single-ended topologies are required. |
Compared with AD8270ARMZ and INA149IDR, the AD8271ARMZ uniquely balances programmable gain versatility, low distortion, and compact single-channel integration - making it optimal for space- and cost-sensitive designs requiring multiple gain options without sacrificing precision.
Availability
AD8271ARMZ is available at Aetrix Electronics and suitable for ADC driver, instrumentation amplifier building blocks, and level translator applications requiring stable component supply across industrial temperature ranges and long production lifecycles.
Supply support for AD8271ARMZ 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 is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets since 1965.
The AD8271ARMZ belongs to Analog Devices' precision difference amplifier product line, engineered specifically for high-accuracy signal conditioning in sensor interfaces, data acquisition, and automated test systems where gain flexibility and dc accuracy are critical.
FAQ
What gain configurations does the AD8271ARMZ support without external components?
The AD8271ARMZ supports three fixed difference amplifier gains - ½, 1, and 2 - using only internal laser-trimmed resistors. It also enables over 40 single-ended amplifier configurations (gains from −2 to +3) by interconnecting its P1–P4 and N1–N3 pins. All configurations require zero external resistors, eliminating matching errors and saving PCB area. The AD8271ARMZ datasheet provides detailed schematics for each valid connection topology.
What is the maximum supply voltage rating for the AD8271ARMZ?
The AD8271ARMZ has an absolute maximum supply voltage rating of ±18 V, with recommended operating range from ±2.5 V to ±18 V dual supplies. It also supports unbalanced supplies (e.g., 0 V and +20 V) as long as the total voltage difference remains ≤36 V. Exceeding ±18 V risks permanent damage, and operation above 150°C junction temperature degrades parametric performance.
How does the AD8271ARMZ achieve high common-mode rejection ratio (CMRR)?
The AD8271ARMZ achieves ≥80 dB CMRR (at G = 2, DC–1 kHz) through on-die laser trimming of its internal 10 kΩ and 20 kΩ resistor networks, ensuring tight ratio matching (<0.01% typical). This eliminates the resistor tolerance and thermal tracking errors that dominate CMRR in discrete implementations. Layout-independent matching also maintains CMRR across frequency and temperature - critical for rejecting noise in motor drive current sensing.
Can the AD8271ARMZ be used with single-supply operation?
Yes, the AD8271ARMZ supports true single-supply operation (e.g., +5 V and GND) as long as the total supply span stays within ±2.5 V to ±18 V limits. Its rail-to-rail input range (−VS −0.4 V to +VS +0.4 V) allows inputs down to ground and up to VCC, and its output swings to within 1.2 V of each rail. Reference pins (P3/P4) can be biased to midsupply (e.g., +2.5 V) to enable bipolar signal handling on single rails.
What thermal considerations apply to the AD8271ARMZ in continuous operation?
The AD8271ARMZ has θJA = 141.9°C/W (10-lead MSOP, 4-layer JEDEC board). At 2.6 mA supply current and ±15 V supplies, power dissipation is ~78 mW - resulting in ~11°C junction rise above ambient. To stay below the 150°C glass transition limit, ambient must remain ≤139°C under worst-case conditions. Derating curves in the AD8271ARMZ datasheet define safe power limits versus ambient temperature for sustained reliability.
AD8271ARMZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- Programmable Gain
- Number of Circuits:
- 1
- Output Type:
- Single-Ended
- Slew Rate:
- 30V/µs
- Gain Bandwidth Product:
- 15 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 500 nA
- Voltage - Input Offset:
- 300 µV
- Current - Supply:
- 2.3mA
- Current - Output / Channel:
- 100 mA
- Voltage - Supply Span (Min):
- 5 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-MSOP
AD8271ARMZ FAQ
1.How can I place an order for AD8271ARMZ through Aetrix?
Please submit a Request for Quotation (RFQ) for AD8271ARMZ 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 AD8271ARMZ reliable?
The price and inventory of AD8271ARMZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD8271ARMZ is usually 5 days.
3.What payment methods are accepted for AD8271ARMZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD8271ARMZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD8271ARMZ?
AD8271ARMZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD8271ARMZ 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 AD8271ARMZ?
For technical support, including AD8271ARMZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD8271ARMZ requirements.
6.How does Aetrix verify that AD8271ARMZ is sourced from the original manufacturer or authorized distributors?
All AD8271ARMZ 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 AD8271ARMZ meets industry standards.
7.What is the process for return or replacement of AD8271ARMZ?
All AD8271ARMZ units undergo pre-shipment inspection (PSI). If there is an issue with AD8271ARMZ, 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 AD8271ARMZ part is unused and in its original packaging.
Return procedure for AD8271ARMZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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