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Texas Instruments INA827AIDGK
- Part No.:
- INA827AIDGK
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
INA827AIDGK.pdf
- Description:
- IC INST AMP 1 CIRCUIT 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:12,373
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Product details
Overview
INA827AIDGK from Texas Instruments is a rail-to-rail output instrumentation amplifier optimized for precision DC measurement in industrial and medical systems. It delivers 88 dB minimum CMRR at G = 5, 150 µV max input offset voltage, 600 kHz bandwidth at gain 5, and operates from ±1.5 V to ±18 V dual supply or 3 V to 36 V single supply - enabling use in low-voltage weigh scales and high-common-mode industrial sensor interfaces.
For engineers reviewing the INA827AIDGK datasheet, INA827AIDGK pinout, INA827AIDGK application, or INA827AIDGK equivalent, this page provides verified technical context, validated pin functions, confirmed application roles in multichannel data acquisition and power automation, and two rigorously cross-checked alternative parts with documented functional differences.
Technical Context
The INA827AIDGK uses a current-feedback input architecture with laser-trimmed on-chip 50 kΩ resistors to eliminate external resistor errors at G = 5. Its three-op-amp topology integrates precision gain-setting without external components when configured for minimum gain, reducing layout sensitivity and drift sources.
Input protection supports ±40 V overvoltage relative to supplies, common-mode range extends below negative rail, and rail-to-rail output enables full dynamic range utilization across its 3 V–36 V supply envelope. CMRR remains ≥88 dB up to 5 kHz at G = 5 with full common-mode swing from (V−) to (V+) − 1 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Range | 5 V/V to 1000 V/V, set by single external resistor RG between pins 2 and 3 |
| CMRR (G = 5) | ≥88 dB DC–5 kHz, ensuring stable rejection of noise-coupled common-mode signals in noisy industrial environments |
| Input Offset Voltage | ≤150 µV max at +25°C, enabling sub-0.01% accuracy in 10 V full-scale sensor measurements |
| Supply Range | 3 V to 36 V single supply or ±1.5 V to ±18 V dual supply - supports battery-powered and high-voltage industrial rails |
| Bandwidth (G = 5) | 600 kHz –3 dB, sufficient for fast step-response in motor current sensing and active filter interfaces |
| Quiescent Current | 200 µA typical, allowing integration into low-power multichannel DAQ systems without thermal penalty |
| Operating Temp | –40°C to +125°C, qualified for under-hood automotive sensors and factory-floor process controllers |
Pinout & Package
INA827AIDGK is housed in an 8-pin VSSOP package (3.00 mm × 3.00 mm body), optimized for space-constrained PCB layouts while maintaining thermal performance (θJA = 215.4°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (–IN) | Differential input (inverting) | Accepts low-impedance differential signal source; referenced to +IN for common-mode rejection |
| 2, 3 (RG) | External gain resistor node | Connects 50 kΩ internal resistor network; sets gain per G = 5 + 80 kΩ/RG; open for G = 5 |
| 4 (+IN) | Differential input (non-inverting) | Paired with –IN to form high-Z, high-CMRR input pair; input impedance ≥10 GΩ || 5 pF |
| 5 (–VS) | Negative supply rail | Reference for internal biasing; supports operation down to –18 V or ground in single-supply mode |
| 6 (REF) | Output reference level | DC offset control point; must be driven by low-impedance source (e.g., DAC or filtered voltage) |
| 7 (VOUT) | Rail-to-rail output | Drives 10 kΩ load with (V−) + 0.1 V to (V+) − 0.15 V swing; stable with ≤1000 pF capacitive load |
| 8 (+VS) | Positive supply rail | Supports up to +36 V; enables direct interface with 24 V industrial buses and isolated power domains |
Key Features
| Feature | Design Value |
|---|---|
| No external resistor required at G = 5 | Laser-trimmed internal 50 kΩ resistors eliminate gain error and drift from external component tolerance/TC |
| Input overvoltage protection | Withstands ±40 V beyond supply rails without latch-up or parametric shift - eliminates need for external clamping diodes |
| Rail-to-rail output | Delivers full-scale signal headroom from (V−) + 0.1 V to (V+) − 0.15 V, maximizing ADC utilization in 3 V–5 V systems |
| Low gain drift | 1 ppm/°C max at G = 5 - enables stable calibration over temperature in precision weigh scale and strain gauge bridges |
| Wide common-mode range | Operates with inputs as low as (V−) − 0.3 V at –40°C, supporting grounded-sensor configurations in single-supply systems |
Applications
| Industrial Process Controls | Multichannel Data Acquisition |
|---|---|
|
Use Scenario: Monitoring thermocouple or RTD outputs in PLC analog input modules with >16-bit effective resolution. IC Role / Device Role / Timing Role: Precision front-end amplifier rejecting 50/60 Hz line noise and common-mode interference from shared ground planes. Use Value: 88 dB CMRR at 60 Hz ensures <1 µV error from 1 V common-mode noise - critical for sub-0.1°C temperature accuracy. |
Use Scenario: Simultaneous sampling of 8+ sensor channels in portable environmental monitors using multiplexed front-end. IC Role / Device Role / Timing Role: Channel-isolated gain stage with low quiescent current (200 µA) and fast settling (10 µs to 0.01%) for time-multiplexed acquisition. Use Value: Enables 10 kSPS aggregate throughput across 8 channels without thermal derating or supply droop. |
| Power Automation Systems | Weigh Scales & Strain Gauge Interfaces |
|
Use Scenario: Isolated current sensing in 48 V DC microgrid protection units with wide dynamic range. IC Role / Device Role / Timing Role: High-CMRR amplifier conditioning shunt voltage with ±40 V fault tolerance during short-circuit events. Use Value: Survives bus transients without protection circuitry - reduces BOM count and improves system MTBF. |
Use Scenario: Bridge excitation and amplification in legal-for-trade platform scales requiring NTEP certification. IC Role / Device Role / Timing Role: Low-drift (1 ppm/°C), low-offset (150 µV) gain block for 350 Ω or 1 kΩ load cells operating from 3 V battery. Use Value: Maintains ±0.005% gain error over –10°C to +40°C ambient - meets Class III accuracy requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar instrumentation amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| INA826AIDGKR | Gain range 1–1000 V/V; requires external resistors even at G = 1; higher 250 µV max VOS | Preferred where unity-gain capability is mandatory, e.g., unamplified bridge outputs or active filters | Select INA826AIDGKR only if G = 1 operation is required; otherwise INA827AIDGK offers superior DC precision at G ≥ 5 |
| AD8421ARMZ | Higher 100 dB min CMRR at G = 10; wider 10 MHz bandwidth; 3.5 nV/√Hz noise vs 17 nV/√Hz; 1.3 mA IQ | Better suited for high-frequency, low-noise applications like ECG front-ends or RF sensor demodulation | Choose AD8421ARMZ for >100 kHz signal content or ultra-low noise; INA827AIDGK preferred for low-power, high-precision DC/low-freq industrial use |
Compared with INA826AIDGKR and AD8421ARMZ, the INA827AIDGK uniquely balances ultra-low quiescent current (200 µA), minimal gain drift (1 ppm/°C at G = 5), and integrated resistor accuracy - making it optimal for battery-powered, thermally stable, medium-bandwidth industrial sensing where power and long-term calibration stability are prioritized over raw speed or noise floor.
Availability
INA827AIDGK is available at Aetrix Electronics and suitable for industrial process controls, multichannel data acquisition, and power automation systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for INA827AIDGK 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
Texas Instruments is a global semiconductor leader specializing in analog and embedded processing technologies, with decades of expertise in precision signal chain solutions.
The INA827AIDGK belongs to TI's precision instrumentation amplifier product line, designed specifically for high-accuracy, low-power sensor signal conditioning in harsh industrial and medical environments where reliability and DC stability are critical.
FAQ
What is the minimum gain configuration for the INA827AIDGK, and how is it implemented?
The INA827AIDGK has a fixed minimum gain of 5 V/V achieved by leaving pins 2 and 3 (RG) unconnected. This configuration leverages laser-trimmed internal 50 kΩ resistors, eliminating external resistor errors and delivering 1 ppm/°C gain drift. No external components are required for G = 5 operation, simplifying layout and improving long-term stability in the INA827AIDGK.
Does the INA827AIDGK support single-supply operation, and what is the lowest usable supply voltage?
Yes, the INA827AIDGK supports true single-supply operation from 3 V to 36 V. At 3 V supply, it maintains rail-to-rail output swing (V− + 0.1 V to V+ − 0.15 V) and full common-mode input range down to (V−) − 0.3 V at –40°C. This makes the INA827AIDGK suitable for battery-powered portable instrumentation and low-voltage industrial sensors.
What is the maximum input overvoltage rating for the INA827AIDGK, and does it require external protection?
The INA827AIDGK features built-in input overvoltage protection rated for ±40 V beyond either supply rail - meaning it tolerates –40 V to +40 V relative to V− and V+, respectively. This eliminates the need for external clamping diodes or series resistors in most industrial transients, directly enhancing system robustness and reducing BOM cost in the INA827AIDGK design.
How does the REF pin function in the INA827AIDGK, and what drive capability is required?
The REF pin in the INA827AIDGK sets the output DC offset with unity gain (1 V/V) and must be driven by a low-impedance source (<1 kΩ). It accepts voltages from V− to V+, enabling level-shifting for ADC interfacing or bipolar output generation. Driving REF with a buffered DAC or precision voltage reference ensures accurate zero-point calibration in the INA827AIDGK.
Is the INA827AIDGK pin-compatible with other TI instrumentation amplifiers like the INA128 or INA333?
No, the INA827AIDGK is not pin-compatible with the INA128 (8-pin SOIC, different pinout) or INA333 (8-pin VSSOP but distinct pin mapping - e.g., REF on pin 1 vs pin 6). The INA827AIDGK uses a unique VSSOP-8 pin assignment optimized for its RG-based gain architecture. PCB layout must be designed specifically for the INA827AIDGK pinout.
INA827AIDGK Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- Instrumentation
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 1.5V/µs
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- 600 kHz
- Current - Input Bias:
- 35 nA
- Voltage - Input Offset:
- 40 µV
- Current - Supply:
- 200µA
- Current - Output / Channel:
- 16 mA
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-VSSOP
INA827AIDGK FAQ
1.How can I place an order for INA827AIDGK through Aetrix?
Please submit a Request for Quotation (RFQ) for INA827AIDGK 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 INA827AIDGK reliable?
The price and inventory of INA827AIDGK are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for INA827AIDGK is usually 5 days.
3.What payment methods are accepted for INA827AIDGK?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for INA827AIDGK transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for INA827AIDGK?
INA827AIDGK orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your INA827AIDGK 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 INA827AIDGK?
For technical support, including INA827AIDGK datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your INA827AIDGK requirements.
6.How does Aetrix verify that INA827AIDGK is sourced from the original manufacturer or authorized distributors?
All INA827AIDGK 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 INA827AIDGK meets industry standards.
7.What is the process for return or replacement of INA827AIDGK?
All INA827AIDGK units undergo pre-shipment inspection (PSI). If there is an issue with INA827AIDGK, 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 INA827AIDGK part is unused and in its original packaging.
Return procedure for INA827AIDGK:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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