TLC1078ID Texas Instruments Operational Amplifiers (SOIC-8) In Stock
TLC1078ID is a dual micropower precision low-voltage operational amplifier by Texas Instruments with ultra-low bias current. Key specs: 60 fA max bias current, 95 dB typical CMRR, 75 dB minimum CMRR, 8-pin SOIC package. From $0.80, in stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- SOIC-8
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- TLC1078ID Datasheet PDF
- Category
- Operational Amplifiers
- Price
- From $4.6300(MOQ 41)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Ultra-low bias current of 60 fA maximum enabling accurate signal amplification from high-impedance sensors such as pH electrodes and piezoelectric transducers
- 95 dB typical CMRR with voltage-feedback architecture delivering precision differential amplification in low-voltage battery-powered instrumentation
- Dual op-amp configuration in 8-pin SOIC package minimizing board space while providing two precision amplifier channels for differential measurement systems
Applications
The TLC1078ID is ideal for precision analog front-end circuits in portable medical instruments, environmental sensors, and data acquisition systems where high-impedance signal sources such as pH electrodes, biosensors, or MEMS microphones must be amplified without loading error introduced by input bias current. Its ultra-low 60 fA bias current is particularly valuable in coulometric titration systems and charge amplifier topologies where even picoamp-level input currents would cause measurable voltage drift over time. The dual amplifier configuration also suits instrumentation amplifier and active filter designs in low-power handheld instruments operating from 3.3 V or 5 V single-supply rails.
Specifications
| Pbfree Code | Yes |
| YTEOL | 15 |
| Amplifier Type | OPERATIONAL AMPLIFIER |
| Architecture | VOLTAGE-FEEDBACK |
| Average Bias Current-Max (IIB) | 0.00006 µA |
| Bias Current-Max (IIB) @25C | 0.00006 µA |
| Common-mode Reject Ratio-Min | 75dB |
| Common-mode Reject Ratio-Nom | 95dB |
| Frequency Compensation | YES |
| Input Offset Current-Max (IIO) | 0.00006 µA |
| Input Offset Voltage-Max | 450 µV |
| JESD-30 Code | R-PDSO-G8 |
| JESD-609 Code | e4 |
| Low-Bias | YES |
| Low-Offset | NO |
| Micropower | YES |
| Number of Functions | 2 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP8,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Packing Method | TUBE |
| Peak Reflow Temperature (Cel) | 260 |
| Power | NO |
| Programmable Power | NO |
| Qualification Status | Not Qualified |
| Slew Rate-Nom | 0.032V/us |
| Subcategory | Operational Amplifier |
| Supply Current-Max | 0.086mA |
| Supply Voltage Limit-Max | 18V |
| Supply Voltage-Nom (Vsup) | 5V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Unity Gain BW-Nom | 100 |
| Voltage Gain-Min | 500000 |
| Wideband | NO |
| Package | SOIC-8 |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.33.00.01 |
| Country of Origin | Mexico, Taiwan |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for TLC1078ID:
Frequently Asked Questions
Why is the TLC1078ID's 60 fA maximum bias current critical when interfacing with a pH electrode?
A glass pH electrode presents a source impedance of 50 MΩ to 1 GΩ. With a 60 fA bias current flowing through 100 MΩ of source impedance, the resulting voltage error is only 6 µV — well below the 59 mV per pH unit sensitivity of the electrode. A typical op-amp with 1 nA bias current under the same conditions would introduce a 100 mV error, equivalent to a 1.7 pH measurement error, rendering the reading useless without careful current-cancellation techniques.
How does the TLC1078ID's 95 dB CMRR benefit a precision differential measurement circuit in an electrically noisy environment?
A 95 dB CMRR means that a 1 V common-mode noise signal — such as 50 Hz or 60 Hz power-line interference coupling into both input leads — is attenuated to approximately 1.8 µV at the output referenced to unity gain. In a 16-bit data acquisition system with a 5 V full-scale range, the LSB is 76 µV, so 1.8 µV of residual noise represents less than 1 LSB of error, allowing the TLC1078ID to maintain full 16-bit accuracy even in the presence of mains-frequency interference without additional filtering.
When is the TLC1078ID a better choice than a standard dual op-amp like the LM358 for battery-powered sensor designs?
The LM358 draws approximately 500 µA quiescent current per amplifier at 5 V, while the TLC1078ID's micropower architecture targets below 50 µA per channel, reducing op-amp supply current by roughly 10x. In a sensor node powered by a 200 mAh coin cell where the op-amp front end is always active, this difference extends battery life from under 200 hours to over 2,000 hours. Additionally, the LM358's input bias current of 20–100 nA is 1,000 times higher than the TLC1078ID's 60 fA, making the TLC1078ID the only viable choice for high-impedance sensor inputs above 10 MΩ source resistance.
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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.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 41+ | $7.2400 | $296.84 |
| 500+ | $5.2100 | $2605.00 |
| 1000+ | $4.9200 | $4920.00 |
| 10000+ | $4.6300 | $46300.00 |
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