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Texas Instruments INA159AIDGKRG4
- Part No.:
- INA159AIDGKRG4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
INA159AIDGKRG4.pdf
- Description:
- IC OPAMP DIFF 1 CIRCUIT 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,571
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Product details
Overview
INA159AIDGKRG4 from Texas Instruments is a precision G = 0.2 difference amplifier optimized for ±10V differential signal conditioning into single-supply ADCs, featuring ±100µV offset voltage, ±1.5µV/°C drift, 1.5MHz bandwidth, and 15V/µs slew rate. It operates from +1.8V to +5.5V supply and delivers ±0.024% max gain accuracy with laser-trimmed on-chip resistors.
For engineers reviewing the INA159AIDGKRG4 datasheet, INA159AIDGKRG4 pinout, INA159AIDGKRG4 application, or INA159AIDGKRG4 equivalent, this device is selected for high-accuracy industrial analog front-ends where rail-to-rail input common-mode range, low distortion, and stable gain over temperature are critical in ±10V sensor interfacing and medium-speed ADC drive circuits.
Technical Context
The INA159AIDGKRG4 integrates a precision op amp with a matched 20kΩ/100kΩ/40kΩ resistor network enabling fixed 0.2 gain without external components. Its input stage supports rail-to-rail common-mode voltage beyond supply rails (e.g., −12.5V to +17.5V at VS = 5V), eliminating transition glitches typical of complementary-input amplifiers.
Reference biasing uses dual REF pins (REF1, REF2) for flexible mid-supply or external reference configuration, while SENSE pin enables output monitoring and feedback control. The device maintains >94dB CMRR over temperature and achieves 0.01% settling in 1µs with 100pF load.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain | Fixed 0.2 (G = 1/5); translates ±10V inputs to 0–4.096V output range compatible with 5V-referenced single-supply ADCs like ADS8325. |
| Offset Voltage | ±100µV max at 25°C; ensures <0.001% full-scale error in 16-bit systems with ±10V input span. |
| Offset Drift | ±1.5µV/°C; contributes <0.18mV total drift over −40°C to +125°C, minimizing calibration frequency in industrial environments. |
| Bandwidth | 1.5MHz (−3dB); supports accurate acquisition of signals up to ~100kHz with <0.1% gain error. |
| Slew Rate | 15V/µs; enables clean 4V step response in <1µs with 100pF load, critical for fast-settling ADC sampling. |
| Supply Range | +1.8V to +5.5V single supply; allows direct interface with 3.3V or 5V microcontroller-based systems without level-shifting. |
| CMRR | 94dB min over temperature; rejects common-mode noise from long sensor cables in noisy factory settings. |
Pinout & Package
VSSOP-8 (DGK) package: 3.0mm × 3.0mm body, 0.65mm pitch, 1.1mm max height, exposed thermal pad, RoHS-compliant, MSL Level-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (REF1) | Reference Input 1 | Connects to ground or half-reference to set common-mode output bias; determines lower bound of input common-mode range. |
| 2 (−IN) | Inverting Input | Differential input terminal; accepts negative leg of ±10V sensor signal; high-impedance (60kΩ common-mode). |
| 3 (+IN) | Non-inverting Input | Differential input terminal; accepts positive leg of ±10V sensor signal; high-impedance (60kΩ common-mode). |
| 4 (V−) | Negative Supply | Ground or negative rail connection; supports single-supply (0V) or split-supply (−2.5V) operation. |
| 5 (SENSE) | Output Sense | Provides buffered output copy for feedback or monitoring; isolates load effects from main output path. |
| 6 (V+) | Positive Supply | Positive rail connection; operates down to +1.8V, enabling low-power embedded designs. |
| 7 (OUT) | Main Output | Amplified, gain-scaled output driving ADC input; rail-to-rail capable with ±60mA short-circuit current. |
| 8 (REF2) | Reference Input 2 | Connects to reference voltage (e.g., 4.096V) to set output zero point; defines upper bound of input common-mode range. |
Key Features
| Feature | Design Value |
|---|---|
| Laser-trimmed resistor network | Ensures ±0.024% gain accuracy and <1ppm/°C gain drift, eliminating need for external trimming in precision measurement systems. |
| Rail-to-rail input common-mode range | Supports ±10V inputs with VS = 5V (−12.5V to +17.5V), enabling direct connection to industrial transducers without attenuators. |
| No input offset transition region | Delivers glitch-free performance across full common-mode range-critical for continuous data acquisition in PLC analog modules. |
| Low 1/f noise (10µVPP) | Minimizes baseline drift in DC-coupled applications like strain gauge or thermocouple signal conditioning. |
| Thermal resistance θJA = 150°C/W | Enables reliable operation at +125°C ambient in enclosed industrial enclosures without forced cooling. |
Applications
| Industrial Process Control | Instrumentation Signal Conditioning |
|---|---|
Use Scenario: Converting ±10V outputs from 4–20mA loop-powered transmitters in chemical plant flow meters. IC Role / Device Role / Timing Role: Difference amplifier performing level translation and common-mode rejection before 16-bit SAR ADC sampling. Use Value: Maintains <0.002% linearity over −40°C to +85°C, reducing recalibration intervals in unattended field installations. |
Use Scenario: Front-end for portable multimeters measuring differential voltage across shunt resistors in battery test systems. IC Role / Device Role / Timing Role: Precision gain-of-0.2 stage scaling ±10V shunt drops to 0–4.096V for 5V-referenced ADCs with minimal offset drift. Use Value: ±1.5µV/°C offset drift ensures <1LSB error over instrument operating range, meeting Class I accuracy standards. |
| Differential-to-Single-Ended Conversion | Audio Line Receiver |
Use Scenario: Interfacing balanced industrial sensors (e.g., LVDTs) to single-ended microcontroller ADCs in motor control feedback loops. IC Role / Device Role / Timing Role: High-CMRR difference amplifier rejecting EMI-induced common-mode noise on twisted-pair cabling. Use Value: 94dB CMRR at 1kHz suppresses 60Hz pickup and switching noise, preserving SNR in closed-loop position control. |
Use Scenario: Receiving line-level audio signals (±2V) from professional audio equipment into 3.3V microcontroller ADCs. IC Role / Device Role / Timing Role: Gain-stable buffer converting differential consumer/pro-audio signals to single-ended format with low THD+N. Use Value: 0.001% THD+N at 1kHz enables CD-quality digitization without additional filtering or calibration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar difference amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| INA149AIDR | G = 1, higher offset (±250µV), wider supply (±18V), no REF/SENSE pins | Better for high-voltage isolation amps; lacks flexible biasing for single-supply ADC interfaces | Select when ±10V signal must be amplified without attenuation and supply exceeds 5.5V. |
| AD8271ARMZ | G = 0.2, similar offset (±100µV), lower bandwidth (1.2MHz), no SENSE pin, MSOP-8 | Compatible pinout but lacks SENSE for output monitoring; slightly slower settling | Choose when board space matches MSOP-8 and SENSE functionality is not required for feedback stability. |
Compared with INA159AIDGKRG4, INA149AIDR offers higher voltage tolerance but requires external gain-setting resistors and lacks integrated reference biasing, while AD8271ARMZ provides functionally similar gain and offset but omits the SENSE pin and delivers 0.3MHz less bandwidth-making INA159AIDGKRG4 optimal for time-critical, single-supply ±10V ADC interfacing with diagnostic monitoring capability.
Availability
INA159AIDGKRG4 is available at Aetrix Electronics and suitable for industrial process controls, instrumentation signal chains, differential-to-single-ended conversion, and audio line receiver designs requiring stable component supply and guaranteed long-term manufacturability.
Supply support for INA159AIDGKRG4 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, embedded processing, and power management ICs, with decades of heritage in precision signal chain solutions.
The INA159AIDGKRG4 belongs to TI's precision difference amplifier product line, engineered specifically for robust ±10V sensor interfacing in harsh industrial environments where accuracy, temperature stability, and single-supply simplicity are mandatory.
FAQ
What is the maximum input common-mode voltage range for INA159AIDGKRG4 at 5V supply?
At VS = +5V with REF1 grounded and REF2 = 5V, the INA159AIDGKRG4 supports −12.5V to +17.5V input common-mode range. This extends beyond both supply rails, enabling direct connection to ±10V industrial sensors without clamping or attenuation networks. The range shifts with reference configuration per Table 1 in the datasheet.
Does INA159AIDGKRG4 require external resistors to achieve G = 0.2 gain?
No. The INA159AIDGKRG4 integrates a laser-trimmed 20kΩ/100kΩ/40kΩ resistor network that fixes the gain at exactly 0.2. No external resistors are needed for basic operation-only the REF1, REF2, and SENSE connections are required for biasing and monitoring. This eliminates matching errors and board space associated with discrete resistor networks.
Can INA159AIDGKRG4 operate from a 3.3V single supply?
Yes. The INA159AIDGKRG4 operates from +1.8V to +5.5V single supply. At 3.3V, it maintains full functionality including ±10V input common-mode range (e.g., −6.25V to +23.75V with appropriate REF configuration), 1.5MHz bandwidth, and ±100µV offset-making it ideal for modern low-voltage industrial IoT nodes interfacing legacy ±10V sensors.
What is the purpose of the SENSE pin on INA159AIDGKRG4?
SENSE is a buffered copy of the OUT pin, providing low-impedance access to the amplified signal without loading the main output. It enables closed-loop monitoring, feedback stabilization in active filters, or simultaneous routing to multiple destinations (e.g., ADC + scope probe) without degrading gain accuracy or settling behavior of the primary output path.
How does INA159AIDGKRG4 handle overload recovery?
The INA159AIDGKRG4 recovers from 50% output overdrive in 250ns-a key advantage for systems sampling fast transients or handling sensor faults. This rapid recovery prevents data corruption during burst-mode acquisition or fault-clearing sequences in programmable logic controllers, ensuring deterministic timing in real-time control loops.
INA159AIDGKRG4 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
INA159AIDGKRG4 FAQ
1.How can I place an order for INA159AIDGKRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for INA159AIDGKRG4 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 INA159AIDGKRG4 reliable?
The price and inventory of INA159AIDGKRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for INA159AIDGKRG4 is usually 5 days.
3.What payment methods are accepted for INA159AIDGKRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for INA159AIDGKRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for INA159AIDGKRG4?
INA159AIDGKRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your INA159AIDGKRG4 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 INA159AIDGKRG4?
For technical support, including INA159AIDGKRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your INA159AIDGKRG4 requirements.
6.How does Aetrix verify that INA159AIDGKRG4 is sourced from the original manufacturer or authorized distributors?
All INA159AIDGKRG4 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 INA159AIDGKRG4 meets industry standards.
7.What is the process for return or replacement of INA159AIDGKRG4?
All INA159AIDGKRG4 units undergo pre-shipment inspection (PSI). If there is an issue with INA159AIDGKRG4, 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 INA159AIDGKRG4 part is unused and in its original packaging.
Return procedure for INA159AIDGKRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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