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Texas Instruments TLC1078CPE4
- Part No.:
- TLC1078CPE4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
TLC1078CPE4.pdf
- Description:
- IC CMOS 2 CIRCUIT 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:4,865
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Product details
Overview
TLC1078CPE4 from Texas Instruments is a dual-channel, ultra-low-power LinCMOS™ precision operational amplifier optimized for battery-powered systems. It delivers 450 µV max input offset voltage, 0.1 µV/month drift, 47 V/ms slew rate, and just 150 µW total supply power at 5 V - enabling operation from a single 1.4 V silver-oxide watch battery in low-voltage sensor front-ends and portable instrumentation.
For engineers reviewing the TLC1078CPE4 datasheet, TLC1078CPE4 pinout, TLC1078CPE4 application, or TLC1078CPE4 equivalent, key selection criteria include rail-to-rail output swing, negative-rail-input capability, sub-picoampere input bias current (0.6 pA typ), and guaranteed performance across 0°C to 70°C - critical for high-impedance transducer interfaces and energy-constrained analog signal chains.
Technical Context
The TLC1078CPE4 integrates two independent precision op-amps in a single 8-pin PDIP package, each featuring high-impedance LinCMOS™ inputs, internal ESD protection (2000 V HBM), and latch-up immunity under ±100 mA surge. Its architecture supports common-mode input down to the negative rail and output swing to the negative rail - eliminating level-shifting requirements in single-supply configurations.
It achieves 110 kHz unity-gain bandwidth and 800,000 typical open-loop gain while maintaining ultra-low quiescent current (20 µA per amplifier at 5 V). The device is functionally and pin-compatible with TLC27L2/4 and TLC27L7/9, allowing drop-in upgrades in legacy designs requiring improved offset and drift performance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | 450 µV max (DIP package) - ensures <1 mV error in 100× gain stages without trimming |
| Input Bias Current | 0.6 pA typ - enables stable DC coupling to >1 GΩ source impedances |
| Supply Voltage Range | 1.4 V to 16 V - operates directly from coin-cell batteries without regulation |
| Slew Rate | 47 V/ms typ - supports 10 kHz full-power sine wave at 1 Vpp into 10 kΩ load |
| Common-Mode Input Range | Extends to negative rail - eliminates need for input biasing resistors in single-supply sensors |
| Output Voltage Swing | Includes negative rail - allows true zero-output capability in reference buffers and level shifters |
| Power Dissipation | 150 µW typ (both amplifiers) - extends battery life in always-on monitoring nodes |
Pinout & Package
Package: 8-pin plastic DIP (P package), 0.300-inch wide body, through-hole mounting.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | 1OUT | Output of amplifier A - drives loads up to 20 mA, rail-to-rail swing |
| 2 | 1IN– | Inverting input of amplifier A - high-impedance LinCMOS node, 0.6 pA bias current |
| 3 | 1IN+ | Non-inverting input of amplifier A - accepts signals down to GND in single-supply mode |
| 4 | GND | Analog ground reference - shared return for both amplifiers and supply |
| 5 | VDD | Positive supply rail - accepts 1.4 V to 16 V; powers both amplifiers |
| 6 | 2IN– | Inverting input of amplifier B - electrically identical to Pin 2 |
| 7 | 2IN+ | Non-inverting input of amplifier B - fully independent, matched to Pin 3 |
| 8 | 2OUT | Output of amplifier B - independent drive capability, no crosstalk above –80 dB |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output swing | Drives to GND and within 100 mV of VDD - simplifies interface to ADCs and comparators |
| Negative-rail input capability | Accepts common-mode voltages down to GND - eliminates external level-shifting in sensor amps |
| Ultra-low input bias current | 0.6 pA typ - preserves signal integrity in piezoelectric, pH, and photodiode front-ends |
| Sub-microvolt/month offset drift | 0.1 µV/month typ (including first 30 days) - reduces calibration frequency in metrology tools |
| Integrated ESD protection | 2000 V HBM rated - withstands handling without external protection diodes |
Applications
| Portable Medical Sensors | Low-Power Data Acquisition |
|---|---|
Use Scenario: Amplifying microvolt-level EEG or ECG signals in battery-operated wearable monitors. IC Role / Device Role / Timing Role: Precision instrumentation amplifier front-end with DC-coupled input and rail-to-rail output. Use Value: 450 µV max VIO and 0.6 pA IIB minimize baseline drift and electrode polarization errors over multi-hour sessions. | Use Scenario: Conditioning thermistor or RTD outputs in wireless environmental loggers. IC Role / Device Role / Timing Role: Low-drift, low-power signal conditioner driving SAR ADC reference inputs. Use Value: 1.4 V minimum supply and 150 µW total dissipation enable >1-year operation on CR2032 cells. |
| Industrial Process Transmitters | Energy-Harvesting Sensor Nodes |
Use Scenario: Signal conditioning for 4–20 mA loop-powered pressure transmitters. IC Role / Device Role / Timing Role: Zero-drift buffer and gain stage operating from loop-derived 3.3 V or lower. Use Value: Negative-rail input allows direct connection to grounded-sensor bridges without bias networks. | Use Scenario: Analog front-end for solar- or thermal-harvested power systems with intermittent supply. IC Role / Device Role / Timing Role: Ultra-low-quiescent amplifier enabling wake-up signal detection during micro-power sleep. Use Value: 20 µA per amplifier supply current ensures reliable startup even when harvested voltage dips to 1.4 V. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLC27L2CP | Higher 1.5 mV max VIO, 20 pA IIB, 1.8 V min supply - less precision, higher power | Legacy designs where offset trim is acceptable and supply >2.7 V is available | Choose when cost sensitivity outweighs drift and bias current requirements |
| OPA333AIDR | Zero-drift architecture, 10 µV max VIO, 0.2 pA IIB, but 1.8 V min supply and 17 µA per amp | High-accuracy applications needing sub-µV offset, not constrained by 1.4 V operation | Prefer for metrology-grade accuracy where supply voltage permits |
Compared with TLC27L2CP, TLC1078CPE4 offers 3× lower offset and 30× lower input bias current at half the supply voltage floor; versus OPA333AIDR, it enables true 1.4 V operation but trades zero-drift stability for ultra-low-voltage compatibility.
Availability
TLC1078CPE4 is available at Aetrix Electronics and suitable for portable medical sensors, low-power data acquisition, industrial process transmitters, and energy-harvesting sensor nodes requiring stable component supply across long production lifecycles.
Supply support for TLC1078CPE4 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 delivering analog and embedded processing solutions for industrial, automotive, and personal electronics markets.
The TLC107x product line was designed specifically for ultra-low-voltage, ultra-low-power precision analog signal conditioning - targeting battery- and energy-harvesting–powered instrumentation where offset, drift, and supply headroom are critical constraints.
FAQ
What is the minimum supply voltage required for reliable operation of the TLC1078CPE4?
The TLC1078CPE4 is specified to operate down to 1.4 V, enabling direct use with silver-oxide watch batteries. At this voltage, it maintains rail-to-rail output swing, negative-rail input capability, and functional amplification - though bandwidth and slew rate scale downward linearly with supply. Full specifications are guaranteed from 1.4 V to 16 V across 0°C to 70°C.
Does the TLC1078CPE4 support rail-to-rail input and output operation?
The TLC1078CPE4 supports rail-to-rail output swing (to GND and within 100 mV of VDD) and common-mode input voltage range extending to the negative rail (GND), but its input does not swing to VDD. The maximum input voltage is VDD – 1.2 V typical. This makes it ideal for single-supply sensor interfaces where the signal stays near ground, but not for full rail-to-rail input applications.
How does the input offset voltage drift specification of the TLC1078CPE4 compare to standard op-amps?
The TLC1078CPE4 specifies 0.1 µV/month typical input offset voltage drift - including the first 30 days - which is significantly lower than conventional CMOS op-amps (typically 0.5–2 µV/month) and competitive with some chopper-stabilized devices. This ultra-low drift enables long-term stability in uncalibrated portable instruments without periodic zeroing.
Can the TLC1078CPE4 drive capacitive loads without instability?
The TLC1078CPE4 is stable with capacitive loads up to 20 pF in unity-gain configuration, as verified in the datasheet test circuit (Figure 2). For larger loads (e.g., ADC input capacitance >20 pF), an isolation resistor (100–500 Ω) between the output and load is recommended to maintain phase margin above 30° and prevent peaking or oscillation.
Is the TLC1078CPE4 pin-compatible with other Texas Instruments op-amps?
Yes, the TLC1078CPE4 is functionally and pin-compatible with the TLC27L2CP and TLC27L4CP dual and quad variants in the same 8-pin PDIP package. This allows direct replacement in existing PCB layouts to upgrade offset, drift, and low-voltage performance without hardware changes - provided the design operates within the TLC1078CPE4's 1.4 V to 16 V supply range.
TLC1078CPE4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- LinCMOS™
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- CMOS
- Number of Circuits:
- 2
- Output Type:
- -
- Slew Rate:
- 0.032V/µs
- Gain Bandwidth Product:
- 110 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 1 pA
- Voltage - Input Offset:
- 180 µV
- Current - Supply:
- 29µA (x2 Channels)
- Current - Output / Channel:
- 30 mA
- Voltage - Supply Span (Min):
- 1.4 V
- Voltage - Supply Span (Max):
- 16 V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
TLC1078CPE4 FAQ
1.How can I place an order for TLC1078CPE4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC1078CPE4 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 TLC1078CPE4 reliable?
The price and inventory of TLC1078CPE4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC1078CPE4 is usually 5 days.
3.What payment methods are accepted for TLC1078CPE4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC1078CPE4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC1078CPE4?
TLC1078CPE4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC1078CPE4 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 TLC1078CPE4?
For technical support, including TLC1078CPE4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC1078CPE4 requirements.
6.How does Aetrix verify that TLC1078CPE4 is sourced from the original manufacturer or authorized distributors?
All TLC1078CPE4 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 TLC1078CPE4 meets industry standards.
7.What is the process for return or replacement of TLC1078CPE4?
All TLC1078CPE4 units undergo pre-shipment inspection (PSI). If there is an issue with TLC1078CPE4, 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 TLC1078CPE4 part is unused and in its original packaging.
Return procedure for TLC1078CPE4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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