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Texas Instruments INA159AIDGKTG4
- Part No.:
- INA159AIDGKTG4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
INA159AIDGKTG4.pdf
- Description:
- IC OPAMP DIFF 1 CIRCUIT 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,814
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Product details
Overview
INA159AIDGKTG4 from Texas Instruments is a precision G = 0.2 difference amplifier optimized for ±10V differential signal conditioning into single-supply ADCs. It delivers ±0.024% max gain accuracy, 1.5MHz bandwidth, 15V/µs slew rate, and operates from +1.8V to +5.5V supply. Its laser-trimmed resistor network enables high common-mode rejection in industrial process control and instrumentation interfaces.
For engineers reviewing the INA159AIDGKTG4 datasheet, INA159AIDGKTG4 pinout, INA159AIDGKTG4 application, or INA159AIDGKTG4 equivalent, key selection criteria include rail-to-rail input common-mode range beyond supplies (±12.5V to ±17.5V depending on reference), low 100µV offset voltage, and MSOP-8 package compatibility with space-constrained analog front-ends.
Technical Context
The INA159AIDGKTG4 integrates a precision op amp with a matched on-chip resistor network configured for fixed 0.2 gain (−14dB), eliminating external precision resistors. Its input stage supports rail-to-rail common-mode voltage operation, enabling direct interfacing of ±10V field signals to 5V or lower single-supply ADCs like ADS8325 and ADS7861.
Reference biasing uses two internal resistors (REF1 and REF2) to set output quiescent level-configurable for mid-supply or external reference. The SENSE pin provides feedback path access for custom gain or filtering, while the V+ and V− pins support both single- and split-supply operation across −40°C to +125°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain | 0.2 (fixed) - translates ±10V differential inputs to 0–4.096V single-ended outputs compatible with 5V ADC references. |
| Gain Accuracy | ±0.024% max - ensures <±1mV absolute error at full-scale ±10V input under temperature variation. |
| Bandwidth | 1.5MHz (−3dB) - supports accurate digitization of signals up to ~100kHz with <0.1% gain error. |
| Slew Rate | 15V/µs - prevents distortion on fast transients such as motor current spikes or sensor step responses. |
| Input Offset Voltage | ±100µV max - contributes <±0.5mV error at ±10V input, critical for 16-bit+ system resolution. |
| Common-Mode Range | Up to ±17.5V (e.g., V+ = 5V, VREF = 2.5V) - accommodates industrial sensor outputs exceeding supply rails. |
| Supply Voltage Range | +1.8V to +5.5V - enables use with low-voltage microcontrollers and battery-powered data loggers. |
| Operating Temperature | −40°C to +125°C - qualified for extended industrial environments including motor drives and PLC I/O modules. |
Pinout & Package
VSSOP-8 (DGK) package: 3.0mm × 3.0mm body, 1.1mm max height, 0.65mm lead pitch, exposed thermal pad (non-electrical). RoHS-compliant, MSL Level-1, rated for −40°C to +125°C operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (REF1) | Reference Input 1 | Connects to ground or reference voltage to configure output DC bias point; used with REF2 to form precision divider. |
| 2 (−IN) | Inverting Input | Differential input terminal; accepts negative leg of ±10V signal; common-mode range extends beyond supply rails. |
| 3 (+IN) | Noninverting Input | Differential input terminal; accepts positive leg of ±10V signal; rail-to-rail input capability enables wide dynamic range. |
| 4 (V−) | Negative Supply | Ground or negative rail connection; supports single-supply (0V) or split-supply (e.g., −2.5V) operation. |
| 5 (SENSE) | Feedback Sense | Provides access to internal feedback node; allows external RC filtering or gain adjustment without breaking precision ratio. |
| 6 (V+) | Positive Supply | Positive rail connection; minimum +1.8V operation enables integration with ultra-low-power systems. |
| 7 (OUT) | Analog Output | Single-ended output driving ADC input; swing limited to (V+) − 0.02V / (V−) + 0.048V at full load. |
| 8 (REF2) | Reference Input 2 | Connects to reference voltage (e.g., 4.096V) to set output mid-point; paired with REF1 for accurate biasing. |
Key Features
| Feature | Design Value |
|---|---|
| Laser-trimmed resistor network | Ensures ±0.024% gain accuracy and >94dB CMRR over −40°C to +125°C without external calibration. |
| Rail-to-rail input common-mode range | Supports ±10V inputs even when powered from +5V supply, eliminating level-shifting circuitry. |
| Low 100µV offset voltage | Maintains <±0.5mV error at full-scale input, preserving resolution in 16-bit ADC systems (e.g., ADS8325). |
| 15V/µs slew rate with 1.5MHz bandwidth | Accurately reproduces fast transients (e.g., motor phase currents) without slewing-induced distortion. |
| Configurable reference biasing (REF1/REF2) | Enables flexible output centering-mid-supply, external reference, or pseudo-differential ADC interface. |
| MSOP-8 thermal performance | 150°C/W θJA with exposed pad option supports continuous operation at full load in compact enclosures. |
Applications
| Industrial Process Control | Instrumentation Signal Conditioning |
|---|---|
|
Use Scenario: Converting ±10V analog outputs from pressure, temperature, or flow sensors into 0–4.096V range for 16-bit SAR ADCs in PLC analog input modules. IC Role / Device Role / Timing Role: Precision difference amplifier performing bipolar-to-unipolar level translation with gain scaling and common-mode rejection. Use Value: Eliminates need for external precision resistors and op amps, reducing BOM count and layout area while maintaining <±0.02% system gain error. |
Use Scenario: Interfacing laboratory-grade differential sensor bridges (e.g., strain gauges) to single-supply data acquisition systems operating from +3.3V or +5V rails. IC Role / Device Role / Timing Role: High-CMRR signal conditioner rejecting noise from long sensor cables while preserving microvolt-level signal integrity. Use Value: 94dB CMRR over temperature ensures stable rejection of 50/60Hz mains interference without recalibration. |
| Differential-to-Single-Ended ADC Drive | Audio Line Receiver |
|
Use Scenario: Driving medium-speed ADCs (e.g., ADS7861, ADS8361) with pseudo-differential inputs using a single-ended output stage. IC Role / Device Role / Timing Role: Gain-stable translator converting differential sensor outputs to referenced single-ended signals synchronized to ADC sampling clock. Use Value: 1µs 0.01% settling time ensures accurate sampling of 100ksps ADCs without aperture uncertainty penalties. |
Use Scenario: Receiving balanced professional audio line signals (±10V) and converting to unbalanced 0–4.096V range for digital audio converters in broadcast equipment. IC Role / Device Role / Timing Role: Low-noise, low-distortion difference amplifier providing common-mode noise immunity and precise gain scaling. Use Value: 30nV/√Hz input voltage noise and <0.001% THD+N at 1kHz preserve audio fidelity in high-end recording interfaces. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar difference amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| INA149AIDGKR | G = 1, higher 200µV offset, 10MHz bandwidth, same MSOP-8 package | Better for high-frequency differential measurements but lacks ±10V-to-ADC scaling; requires external gain stage for same function | Select when bandwidth >5MHz is required and gain flexibility justifies added components |
| AD8271ARMZ | G = 0.2, ±0.01% gain error, 1.2MHz bandwidth, SOIC-8 package (larger footprint) | Lower gain error but slower response; SOIC-8 requires more PCB area than MSOP-8 | Choose for tighter gain tolerance where board space permits larger package |
Compared with INA159AIDGKTG4, INA149AIDGKR offers higher bandwidth but no built-in ±10V-to-ADC scaling, while AD8271ARMZ provides superior gain accuracy at the cost of reduced speed and larger packaging-making INA159AIDGKTG4 optimal for space-constrained, industrial-grade ±10V signal chains requiring integrated precision and speed.
Availability
INA159AIDGKTG4 is available at Aetrix Electronics and suitable for industrial process control, instrumentation signal conditioning, and differential-to-single-ended ADC drive applications requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for INA159AIDGKTG4 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 amplifiers and data conversion solutions.
The INA159AIDGKTG4 belongs to TI's precision difference amplifier product line, engineered specifically for robust ±10V industrial signal interfacing to single-supply ADCs in harsh environments.
FAQ
What is the maximum input common-mode voltage range supported by the INA159AIDGKTG4?
The INA159AIDGKTG4 supports an input common-mode voltage range extending beyond the supply rails-for example, up to +17.5V and −12.5V when operated from a +5V supply with a 2.5V reference. This rail-to-rail input capability allows direct connection of ±10V industrial sensor outputs without external level-shifting circuitry, and the exact range depends on V+, V−, and reference configuration per Table 1 in the INA159AIDGKTG4 datasheet.
Can the INA159AIDGKTG4 operate from a +3.3V single supply?
Yes, the INA159AIDGKTG4 operates from +1.8V to +5.5V total supply voltage, making it fully compatible with +3.3V single-supply systems. When powered from +3.3V, its common-mode input range adjusts accordingly (e.g., +13.55V to −6.25V with 2.5V reference), and output swing remains functional within (V+) − 0.02V and (V−) + 0.048V-enabling reliable interfacing with 3.3V-tolerant ADCs.
How does the SENSE pin on the INA159AIDGKTG4 function in practical designs?
The SENSE pin on the INA159AIDGKTG4 provides access to the internal feedback node between the op amp output and the precision resistor network. It allows designers to insert external RC networks for anti-alias filtering or adjust gain via additional resistors without compromising the laser-trimmed ratio. In the INA159AIDGKTG4, this feature enables customized frequency response and noise reduction while retaining factory-calibrated accuracy.
What ADCs are explicitly validated for use with the INA159AIDGKTG4 in TI documentation?
Texas Instruments validates the INA159AIDGKTG4 with several medium-speed SAR ADCs including the ADS8325, ADS7861, and ADS8361. These devices share compatible reference architectures and timing requirements-the INA159AIDGKTG4's 1µs 0.01% settling time and 4.096V full-scale output align precisely with the input ranges and sampling apertures of these ADCs, as shown in Figures 3 and 4 of the INA159AIDGKTG4 datasheet.
Is the INA159AIDGKTG4 pin-compatible with other members of the INA159 family?
Yes, all variants of the INA159-including INA159AIDGKTG4, INA159AIDGKR, and INA159AIDGKT-are identical in pinout, electrical specifications, and MSOP-8 (DGK) package dimensions. The suffix differences (e.g., "G4", "T", "R") denote tape-and-reel packaging and lead finish variants only; no functional or mechanical incompatibility exists between them, allowing drop-in substitution based on volume and logistics requirements.
INA159AIDGKTG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Amplifier Type:
- Differential
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 15V/µs
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- 1.5 MHz
- Current - Input Bias:
- -
- Voltage - Input Offset:
- 100 µV
- Current - Supply:
- 1.1mA
- Current - Output / Channel:
- 60 mA
- Voltage - Supply Span (Min):
- 1.8 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-VSSOP
INA159AIDGKTG4 FAQ
1.How can I place an order for INA159AIDGKTG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for INA159AIDGKTG4 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 INA159AIDGKTG4 reliable?
The price and inventory of INA159AIDGKTG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for INA159AIDGKTG4 is usually 5 days.
3.What payment methods are accepted for INA159AIDGKTG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for INA159AIDGKTG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for INA159AIDGKTG4?
INA159AIDGKTG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your INA159AIDGKTG4 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 INA159AIDGKTG4?
For technical support, including INA159AIDGKTG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your INA159AIDGKTG4 requirements.
6.How does Aetrix verify that INA159AIDGKTG4 is sourced from the original manufacturer or authorized distributors?
All INA159AIDGKTG4 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 INA159AIDGKTG4 meets industry standards.
7.What is the process for return or replacement of INA159AIDGKTG4?
All INA159AIDGKTG4 units undergo pre-shipment inspection (PSI). If there is an issue with INA159AIDGKTG4, 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 INA159AIDGKTG4 part is unused and in its original packaging.
Return procedure for INA159AIDGKTG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
INA159AIDGKTG4 Tags
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