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Texas Instruments INA350ABSIDSGR
- Part No.:
- INA350ABSIDSGR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
INA350ABSIDSGR.pdf
- Description:
- TINY (2-MM 2-MM), LOW-POWER (100
- Quantity:
- Payment:
- Shipping:
Inventory:3,642
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Product details
Overview
INA350ABSIDSGR from Texas Instruments is a selectable-gain instrumentation amplifier optimized for low-power, space-constrained bridge-sensing applications. It delivers G = 10 or G = 20 gain options, 95 dB typical CMRR, 0.2 mV typical input offset voltage, and 100 µA typical quiescent current across its –40°C to 125°C operating range in an 8-pin WSON (DSG) package.
For engineers reviewing the INA350ABSIDSGR datasheet, INA350ABSIDSGR pinout, INA350ABSIDSGR application, or INA350ABSIDSGR equivalent, this page provides verified technical context, validated pin functions, real-world use-value metrics for 10–14-bit ADC interfacing, and confirmed alternative options for cost- and size-sensitive analog front-end designs.
Technical Context
The INA350ABSIDSGR implements a three-amplifier instrumentation architecture with integrated precision matched resistors-eliminating external gain-setting components and reducing BOM count. Its gain-select (GS) pin toggles between G = 10 (logic low) and G = 20 (logic high), while the shutdown (SHDN) pin enables power gating down to 1.25 µA.
It operates from 1.8 V to 5.5 V single supply (±0.9 V to ±2.75 V dual), supports rail-to-rail output swing with 15 mV headroom, drives up to 500 pF with <20% overshoot, and achieves 100 kHz bandwidth at G = 10-optimized for low-speed precision sensing in battery-powered systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Options | G = 10 or G = 20-selected via logic-level GS pin; no external resistors required. |
| CMRR | 95 dB typical-ensures high rejection of common-mode noise in noisy industrial environments. |
| Input Offset Voltage | 0.2 mV typical-enables accurate DC-coupled measurements in weigh scale and pressure sensor interfaces. |
| Quiescent Current | 100 µA typical-supports multi-year battery life in wearable fitness monitors and portable medical devices. |
| Bandwidth (G = 10) | 100 kHz-sufficient for 10–14-bit ADC sampling up to ~10 kSPS with minimal settling error. |
| Supply Range | 1.8 V to 5.5 V-compatible with Li-ion, coin-cell, and 3.3 V/5 V system rails without level-shifting. |
| Operating Temperature | –40°C to 125°C-qualified for automotive under-hood and industrial control cabinet deployment. |
Pinout & Package
INA350ABSIDSGR is housed in an 8-pin WSON (DSG) package measuring 2.0 mm × 2.0 mm with exposed thermal pad connected to V−.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - GS | Input | Gain select: logic low → G = 10; logic high → G = 20; NC defaults to G = 20. |
| 2 - IN− | Input | Negative (inverting) input terminal for differential signal acquisition. |
| 3 - IN+ | Input | Positive (non-inverting) input terminal-high-impedance (>100 GΩ) for sensor interface stability. |
| 4 - V− | Power | Negative supply rail; thermal pad must be soldered to PCB ground plane for thermal management. |
| 5 - REF | Input | Reference input-must be driven by low-impedance source; sets output common-mode level. |
| 6 - OUT | Output | Single-ended amplified output; drives 10 kΩ loads with 15 mV rail headroom. |
| 7 - V+ | Power | Positive supply rail; supports single-supply operation from 1.8 V to 5.5 V. |
| 8 - SHDN | Input | Shutdown control: logic high enables amplifier; logic low disables (IQSD ≤ 1.25 µA). |
Key Features
| Feature | Design Value |
|---|---|
| Integrated precision resistor network | Eliminates need for external matched resistors-reduces layout area, BOM cost, and assembly complexity. |
| Selectably programmable gain | Hardware-configurable G = 10/G = 20 via single logic pin-no firmware or external switching required. |
| Ultra-low quiescent current | 100 µA typical-enables always-on sensing in energy-harvesting and coin-cell-powered applications. |
| EMI rejection | 96 dB at 1 GHz-maintains accuracy in RF-dense environments like smart meters and industrial gateways. |
| Small-footprint WSON package | 2.0 mm × 2.0 mm body with thermal pad-fits into tight spaces on wearables and miniaturized IoT nodes. |
Applications
| Bridge Network Sensing | Differential to Single-Ended Conversion |
|---|---|
|
Use Scenario: Strain gauge or load cell outputs small differential voltages (<10 mV) requiring amplification before ADC digitization. IC Role / Device Role / Timing Role: Instrumentation amplifier providing precise, low-noise, high-CMRR gain with selectable scaling for full-scale ADC utilization. Use Value: Integrated matched resistors eliminate gain error drift; 0.2 mV offset ensures sub-0.1% measurement error in 12-bit weigh scale systems. |
Use Scenario: Converting differential sensor outputs (e.g., thermocouples, RTDs) to single-ended signals compatible with SAR ADC inputs. IC Role / Device Role / Timing Role: Precision differential-to-single-ended converter with reference-controlled output common-mode voltage. Use Value: REF pin allows direct alignment to ADC reference voltage; 100 kHz bandwidth supports 10 kSPS sampling with <0.01% settling error. |
| Weigh Scale | Wearable Fitness Monitor |
|
Use Scenario: High-resolution weight measurement using four-wire load cells in consumer or medical-grade scales. IC Role / Device Role / Timing Role: Primary signal conditioning stage-amplifies microvolt-level bridge imbalances with stable gain and low drift. Use Value: 0.6 µV/°C max offset drift and 85 dB min CMRR ensure consistent accuracy across temperature and EMI exposure. |
Use Scenario: Heart rate monitoring via photoplethysmography (PPG) where ambient light rejection and low power are critical. IC Role / Device Role / Timing Role: Low-power analog front-end amplifier for optical sensor differential outputs prior to ADC sampling. Use Value: 100 µA IQ and shutdown mode extend battery life; 500 pF capacitive drive supports integrated RC filtering without instability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar instrumentation amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| INA333AIDR | Fixed G = 100; 50 µA IQ; 0.025% max gain error; DSBGA package (1.5 mm × 1.5 mm) | Better gain accuracy but no gain select; smaller footprint but lower drive capability (300 pF) | Choose INA333AIDR when fixed high gain and ultra-low power dominate over flexibility and capacitive drive. |
| AD8420ARMZ | Fixed G = 10/100 via resistor; 1.2 mA IQ; 120 dB CMRR; MSOP-8 package | Higher performance and noise immunity, but 12× higher quiescent current and no shutdown | Choose AD8420ARMZ for industrial PLC analog input modules where precision outweighs battery-life constraints. |
Compared with INA333AIDR and AD8420ARMZ, the INA350ABSIDSGR uniquely balances selectable gain, ultra-low power, and robust capacitive drive in a miniature WSON package-making it optimal for cost-sensitive, space-constrained, battery-operated sensing nodes.
Availability
INA350ABSIDSGR is available at Aetrix Electronics and suitable for bridge sensing, portable medical devices, industrial analog input modules, and wearable electronics requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for INA350ABSIDSGR 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 INA350ABSIDSGR belongs to TI's cost- and size-optimized instrumentation amplifier product line, designed specifically for low-power, high-accuracy sensor signal conditioning in battery-powered and space-constrained applications.
FAQ
What gain options does the INA350ABSIDSGR support, and how are they selected?
The INA350ABSIDSGR supports two gain options: G = 10 and G = 20. These are selected via the GS pin-logic low selects G = 10, logic high selects G = 20, and no connection defaults to G = 20. This hardware-based selection eliminates the need for external resistors or digital configuration, simplifying design and improving reliability in the INA350ABSIDSGR implementation.
Does the INA350ABSIDSGR require external resistors to set gain?
No, the INA350ABSIDSGR does not require external resistors. It integrates precision-matched thin-film resistors internally, enabling accurate, temperature-stable gain settings for both G = 10 and G = 20. This integration reduces board area, lowers BOM cost, and eliminates matching errors-key advantages confirmed in the INA350ABSIDSGR datasheet and application notes.
What is the maximum capacitive load the INA350ABSIDSGR can drive while maintaining stability?
The INA350ABSIDSGR can drive up to 500 pF with less than 20% overshoot under typical conditions (100 mV step, G = 10). This specification is verified in the device's electrical characteristics table and supported by Figure 7-39 in the INA350ABSIDSGR datasheet-making it suitable for direct interface with ADC input filters and long PCB traces without added isolation resistance.
How does the shutdown feature of the INA350ABSIDSGR reduce system power consumption?
The SHDN pin disables the INA350ABSIDSGR core amplifiers, reducing quiescent current to ≤1.25 µA. With fast enable/disable timing (tON = 100 µs, tOFF = 4 µs), the INA350ABSIDSGR supports duty-cycled sensing architectures-extending battery life in intermittent-monitoring applications such as wireless sensor nodes and portable diagnostics equipment.
Is the INA350ABSIDSGR suitable for operation from a 1.8-V supply?
Yes, the INA350ABSIDSGR is fully specified from 1.8 V to 5.5 V single supply (or ±0.9 V to ±2.75 V dual supply). At 1.8 V, it maintains 100 µA typical quiescent current, functional gain accuracy, and 95 dB CMRR-enabling direct integration with ultra-low-voltage microcontrollers and energy-harvesting power sources in the INA350ABSIDSGR application space.
INA350ABSIDSGR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-WFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- Instrumentation
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 0.1V/µs
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- 25 kHz
- Current - Input Bias:
- 1 pA
- Voltage - Input Offset:
- 200 µV
- Current - Supply:
- 100µA
- Current - Output / Channel:
- 20 mA
- Voltage - Supply Span (Min):
- 1.7 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-WSON (2x2)
INA350ABSIDSGR FAQ
1.How can I place an order for INA350ABSIDSGR through Aetrix?
Please submit a Request for Quotation (RFQ) for INA350ABSIDSGR 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 INA350ABSIDSGR reliable?
The price and inventory of INA350ABSIDSGR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for INA350ABSIDSGR is usually 5 days.
3.What payment methods are accepted for INA350ABSIDSGR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for INA350ABSIDSGR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for INA350ABSIDSGR?
INA350ABSIDSGR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your INA350ABSIDSGR 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 INA350ABSIDSGR?
For technical support, including INA350ABSIDSGR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your INA350ABSIDSGR requirements.
6.How does Aetrix verify that INA350ABSIDSGR is sourced from the original manufacturer or authorized distributors?
All INA350ABSIDSGR 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 INA350ABSIDSGR meets industry standards.
7.What is the process for return or replacement of INA350ABSIDSGR?
All INA350ABSIDSGR units undergo pre-shipment inspection (PSI). If there is an issue with INA350ABSIDSGR, 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 INA350ABSIDSGR part is unused and in its original packaging.
Return procedure for INA350ABSIDSGR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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