PINA350ABSIDDFR Texas Instruments Integrated Circuit (SOT23 (8-Pin)) In Stock
The PINA350ABSIDDFR is a low-power, selectable-gain instrumentation amplifier from Texas Instruments operating from 1.8 V to 5.5 V, offering 85 dB minimum CMRR, 0.1 MHz bandwidth, and a tiny SOT-23 8-pin package for precision sensor signal conditioning in portable and industrial measurement systems.
- Manufacturer
- Texas Instruments
- Package
- SOT23 (8-Pin)
- Pin Count
- 8
- Lifecycle
- OBSOLETE
- Datasheet
- PINA350ABSIDDFR Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Selectable gain settings eliminates external resistors for gain configuration
- 85 dB minimum common-mode rejection ratio (CMRR) for precise differential measurements
- 0.1 MHz bandwidth suits low-frequency sensor signals such as bridge outputs and thermocouples
- Ultra-low bias current of 30 nA max at 25°C minimizes error with high-impedance sources
- Wide supply range: 1.8 V to 5.5 V for battery and regulated rail operation
- SOT-23 8-pin package for space-critical wearable and portable sensor designs
Applications
The PINA350ABSIDDFR is used in precision sensor front-ends for Wheatstone bridge strain gauges, pressure sensors, and temperature measurement circuits where high CMRR and low bias current are essential. Its selectable gain feature reduces external resistor count and improves gain accuracy compared to discrete in-amp configurations, making it attractive for medical portable monitors and industrial data acquisition modules. The 1.8 V minimum supply also enables integration into IoT sensor nodes powered by coin cells or energy harvesters.
Specifications
| YTEOL | 0 |
| Amplifier Type | INSTRUMENTATION AMPLIFIER |
| Bandwidth (3dB)-Nom | 0.1MHz |
| Bias Current-Max (IIB) @25C | 0.00003 µA |
| Common-mode Reject Ratio-Min | 85dB |
| Input Offset Voltage-Max | 1300 µV |
| JESD-30 Code | R-PDSO-G8 |
| Number of Functions | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSSOP8,.12 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, THIN PROFILE, SHRINK PITCH |
| Packing Method | TR |
| Slew Rate-Nom | 0.24V/us |
| Supply Current-Max | 0.135mA |
| Supply Voltage Limit-Max | 6V |
| Supply Voltage-Nom (Vsup) | 3.3V |
| Surface Mount | YES |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.65mm |
| Terminal Position | DUAL |
| Voltage Gain-Max | 50 |
| Voltage Gain-Min | 10 |
| Voltage Gain-Nom | 20 |
| Package | SOT23 (8-Pin) |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.33.00.01 |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What CMRR specification does the PINA350ABSIDDFR provide, and why is that important for bridge sensor measurements?
The device guarantees a minimum common-mode rejection ratio of 85 dB, which means common-mode noise such as 50 Hz or 60 Hz power-line interference is attenuated by more than 17,000 times relative to the differential signal. For a Wheatstone bridge pressure or strain sensor with millivolt-level outputs, this high CMRR is essential to extract the true differential reading from the much larger common-mode voltage present on both inputs.
How does the selectable gain architecture of the PINA350ABSIDDFR simplify PCB design compared to a standard 3-op-amp instrumentation amplifier?
Traditional instrumentation amplifiers require one or two precision external resistors to set gain, which introduces component tolerance errors and additional BOM items. The PINA350ABSIDDFR uses pin-selectable gain modes that are factory-trimmed, eliminating external resistors and reducing gain error while shrinking the PCB footprint to just the 8-pin SOT-23 package area.
For a wearable biosensor application, how does the PINA350ABSIDDFR's supply voltage range and package size compare to larger in-amp alternatives?
The device operates down to 1.8 V, allowing direct use with LDO-regulated lithium coin cells or energy-harvesting supplies common in wearables. Its SOT-23 8-pin package occupies roughly 2.9 mm × 1.6 mm, which is significantly smaller than SOIC-8 alternatives at 4.9 mm × 3.9 mm, enabling sensor patches and hearing-aid circuits with tightly constrained board area and a 0.03 µA bias current that minimally loads high-impedance bioelectrical sensors.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
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