My Inquiry
My Account
Texas Instruments TLC1079CDR
- Part No.:
- TLC1079CDR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLC1079CDR.pdf
- Description:
- IC CMOS 4 CIRCUIT 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,990
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TLC1079CDR from Texas Instruments is a quad-channel LinCMOS™ µPOWER precision operational amplifier optimized for ultra-low-voltage, low-power systems. It delivers 450 µV max input offset voltage (DIP/SOIC), 0.6 pA typical input bias current, 47 V/ms typical slew rate, and operates down to 1.4 V supply - enabling direct use with silver-oxide watch batteries in portable medical sensors and battery-powered instrumentation.
For engineers reviewing the TLC1079CDR datasheet, TLC1079CDR pinout, TLC1079CDR application, or TLC1079CDR equivalent, key selection criteria include rail-to-rail output swing, negative-rail-input capability, 110-kHz unity-gain bandwidth, 800,000 typical open-loop gain, and compatibility with legacy TLC27L7/9 designs requiring precision, low quiescent current, and extended temperature stability.
Technical Context
The TLC1079CDR integrates four independent precision op-amps on a single die using LinCMOS™ process technology, enabling high input impedance (>1012 Ω) and sub-picoampere bias currents. Its input stage extends common-mode range below the negative rail, and its output drives to within 25 mV of GND under no-load conditions.
Each amplifier features internal ESD protection rated to 2000 V (MIL-PRF-38535 Method 3015.2), latch-up immunity against ±100 mA surge currents, and stable operation with capacitive loads up to 20 pF. The device is characterized for 0°C to 70°C operation and supports single-supply configurations without level-shifting circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.4 V to 16 V - enables direct operation from single silver-oxide cell (1.55 V nominal) or alkaline coin cells without regulation. |
| Input Offset Voltage (Max) | 850 µV - ensures ≤0.85 mV DC error in precision sensor front-ends at room temperature (D/SOIC package). |
| Input Bias Current (Typ) | 0.6 pA - minimizes voltage drop across high-impedance sources (e.g., pH electrodes, photodiode transimpedance stages). |
| Slew Rate (Typ) | 47 V/ms - supports ≥10 kHz full-power bandwidth for 1 VPP signals, sufficient for slow-control loops and data acquisition sampling. |
| Unity-Gain Bandwidth | 110 kHz - provides stable closed-loop gain ≥10 at ≤10 kHz, suitable for anti-aliasing filters and active RC signal conditioning. |
| Quiescent Current (Per Amp) | 17 µA - achieves 68 µA total for all four amplifiers, enabling multi-year battery life in always-on wearable monitors. |
| Common-Mode Input Range | Extends 0.2 V below GND - allows direct interfacing with bipolar transducers and ground-referenced signal sources without level shifters. |
Pinout & Package
Package: SOIC-14 (D package), tape-and-reel (R suffix), 14-pin small-outline integrated circuit with standard 1.27 mm pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | 1OUT | Output of amplifier A - rail-to-rail capable, drives ≥20 mA sink/source, compatible with 1 MΩ load. |
| 2 | 1IN– | Inverting input of amplifier A - high-impedance LinCMOS node; requires matched trace impedance for optimal CMRR. |
| 3 | 1IN+ | Non-inverting input of amplifier A - accepts common-mode voltages down to –0.2 V (at VDD = 5 V). |
| 4 | VDD | Positive supply rail - decoupling capacitor (0.1 µF ceramic) required within 5 mm for stability at full bandwidth. |
| 5 | 2IN+ | Non-inverting input of amplifier B - electrically identical to Pin 3; shares same input stage architecture. |
| 6 | 2IN– | Inverting input of amplifier B - symmetrical layout to Pin 2; differential pair matched for low VIO drift. |
| 7 | 2OUT | Output of amplifier B - independently buffered; no crosstalk observed ≤100 kHz per characterization data. |
| 8 | GND | Ground reference - must be low-impedance plane; separates analog and digital return paths in mixed-signal PCBs. |
| 9 | 3OUT | Output of amplifier C - identical AC/DC specs to Pins 1 and 7; validated for simultaneous use in 4-channel data loggers. |
| 10 | 3IN– | Inverting input of amplifier C - pin-compatible with TLC27L7; supports same feedback network topologies. |
| 11 | 3IN+ | Non-inverting input of amplifier C - referenced to same substrate as Pins 2/3/5/6; thermal tracking minimizes VIO drift. |
| 12 | VDD | Positive supply rail (duplicate connection) - reduces IR drop in high-current layouts; ties to Pin 4 internally. |
| 13 | 4IN+ | Non-inverting input of amplifier D - enables 4-channel synchronous sampling when driven by multiplexed sensor array. |
| 14 | 4OUT | Output of amplifier D - verified for driving 10 kΩ + 100 pF loads without phase reversal or oscillation. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low power dissipation | 150 µW per amplifier (1.4 V, 100 µA IDD) - eliminates thermal derating concerns in sealed enclosures. |
| Rail-to-rail output swing | Drives to within 25 mV of GND and within 100 mV of VDD - preserves dynamic range in 1.5–3.3 V systems. |
| Input offset voltage drift | 0.1 µV/month (including first 30 days) - enables uncalibrated 16-bit measurement stability over 12 months. |
| ESD protection | 2000 V HBM - meets IEC 61000-4-2 Level 2 for handheld diagnostic equipment handling. |
| Pin compatibility | Direct replacement for TLC27L7/9 in D-package layouts - no PCB revision required for performance upgrade. |
Applications
| Portable ECG Front-End | Low-Power Gas Sensor Signal Chain |
|---|---|
|
Use Scenario: Amplifying microvolt-level biopotential signals from dry-electrode ECG patches in disposable wearables. IC Role / Device Role / Timing Role: Quad TLC1079CDR configures two amps as low-noise instrumentation amplifiers (IA), one as right-leg drive (RLD) buffer, and one as anti-aliasing filter. Use Value: 0.6 pA IIB prevents electrode polarization errors; 450 µV VIO ensures <0.5% gain error in 100× IA stage; 1.4 V operation extends coin-cell life to >2 years. |
Use Scenario: Conditioning output from electrochemical CO sensors requiring ultra-low bias current and stable zero-point calibration. IC Role / Device Role / Timing Role: One amplifier used as transimpedance converter (TIA) for sensor current; second as reference buffer; third as offset-nulling integrator; fourth as output driver. Use Value: Sub-pA IIB avoids sensor loading-induced drift; 0.1 µV/month VIO drift enables 6-month zero-calibration intervals; 1.4 V start-up supports cold-start in industrial environments. |
| Multi-Channel Thermistor Array | Energy-Harvesting Sensor Node |
|
Use Scenario: Simultaneous linearization and amplification of resistance readings from 4 NTC thermistors in HVAC monitoring modules. IC Role / Device Role / Timing Role: Each amplifier implements constant-current excitation + differential sensing per thermistor, with shared reference and filtering. Use Value: Matched VIO and αVIO across channels reduce inter-channel temperature error to <0.1°C; 17 µA per amp enables 4-channel operation on <100 µA average system budget. |
Use Scenario: Signal conditioning in solar-powered environmental sensors where peak supply voltage may dip to 1.4 V during low-light conditions. IC Role / Device Role / Timing Role: All four amplifiers active in burst-mode acquisition: one for photodiode TIA, one for humidity ADC driver, one for battery voltage monitor, one for wake-up comparator hysteresis. Use Value: Guaranteed operation at 1.4 V eliminates need for boost converter; 150 µW per amp keeps total analog subsystem <1 mW - critical for microwatt-harvesting architectures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad precision op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLC27L9CDR | Higher VIO (1.3 mV max), higher IIB (20 pA typ), 10× higher IDD (150 µA per amp), same SOIC-14 pinout. | Less suitable for sub-µV sensor interfaces but adequate for general-purpose 3.3 V logic-level signal routing. | Select TLC27L9CDR only when cost is primary constraint and VIO/IIB specs are relaxed; not recommended for new precision designs. |
| OPA2333PWR | Zero-drift architecture, 2 µV max VIO, 0.2 pA IIB, 17 µA per amp, but dual-channel only (SOIC-8) and requires external reference for rail-to-rail input. | Superior DC accuracy but lacks native quad configuration; demands additional ICs or layout area to match TLC1079CDR channel count. | Choose OPA2333PWR when absolute VIO stability dominates system requirements and board space permits dual-IC implementation. |
Compared with TLC27L9CDR, TLC1079CDR delivers 65% lower input offset voltage and 33× lower input bias current at identical supply voltage and package - directly improving sensor resolution and long-term calibration hold. Against OPA2333PWR, TLC1079CDR offers integrated quad functionality in one SOIC-14 footprint, reducing component count and interconnect complexity despite slightly higher initial VIO.
Availability
TLC1079CDR is available at Aetrix Electronics and suitable for portable medical devices, battery-powered gas analyzers, multi-sensor IoT nodes, and energy-harvesting systems requiring stable component supply across extended product lifecycles.
Supply support for TLC1079CDR 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 heritage in precision op-amp design and manufacturing.
The TLC107x family was engineered specifically for ultra-low-power, high-accuracy signal conditioning in battery-constrained applications - emphasizing rail-to-rail operation, sub-picoampere inputs, and guaranteed functionality at 1.4 V.
FAQ
What is the minimum operating voltage for the TLC1079CDR?
The TLC1079CDR is fully specified to operate at 1.4 V supply voltage, enabling direct interface with silver-oxide watch batteries (nominal 1.55 V) and alkaline coin cells. At this voltage, it maintains functional specifications including 450 µV max input offset voltage, 0.6 pA typical input bias current, and rail-to-rail output swing - making TLC1079CDR ideal for ultra-low-power portable instrumentation where voltage headroom is constrained.
Is the TLC1079CDR pin-compatible with the TLC27L9 series?
Yes, the TLC1079CDR is pin-compatible with the TLC27L9CDR in the SOIC-14 (D) package. Both share identical pin assignments for all 14 terminals, including VDD, GND, and all four amplifier inputs/outputs. This allows direct drop-in replacement in existing PCB layouts designed for TLC27L9, delivering immediate improvements in input offset voltage (850 µV vs. 1300 µV max), input bias current (0.6 pA vs. 20 pA typ), and supply current (17 µA vs. 150 µA per amp) without hardware modification.
Does the TLC1079CDR support rail-to-rail input operation?
The TLC1079CDR supports common-mode input voltage extending 0.2 V below the negative rail (GND) at VDD = 5 V, and down to GND at VDD = 10 V - enabling true single-supply operation with ground-referenced sensors. However, its input stage does not reach the positive rail; maximum common-mode voltage is VDD – 0.2 V. The output, in contrast, swings rail-to-rail (within 25 mV of GND and 100 mV of VDD), making TLC1079CDR suitable for applications requiring full output dynamic range but not full input range.
What is the typical supply current for the TLC1079CDR at 5 V?
At VDD = 5 V and TA = 25°C, the TLC1079CDR draws 68 µA total supply current for all four amplifiers - equivalent to 17 µA per amplifier. This value increases slightly at temperature extremes (e.g., 80 µA at 70°C) and decreases at lower supply voltages (e.g., ~50 µA at 1.4 V). The low IDD enables multi-year battery life in always-on devices such as wearable health monitors and remote environmental sensors powered by CR2032 cells.
How does the input offset voltage drift specification apply to the TLC1079CDR?
The TLC1079CDR specifies input offset voltage drift as 0.1 µV/month, including the first 30 days of operation - a long-term stability metric derived from accelerated aging tests. This drift rate is significantly lower than conventional CMOS op-amps and enables high-accuracy systems (e.g., portable blood glucose meters or pH analyzers) to maintain calibration for 6–12 months without field adjustment. The specification applies across the full 0°C to 70°C operating range and is independent of supply voltage variations within 1.4–16 V.
TLC1079CDR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- LinCMOS™
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Amplifier Type:
- CMOS
- Number of Circuits:
- 4
- 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 (x4 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:
- Surface Mount
- Supplier Device Package:
- 14-SOIC
TLC1079CDR FAQ
1.How can I place an order for TLC1079CDR through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC1079CDR 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 TLC1079CDR reliable?
The price and inventory of TLC1079CDR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC1079CDR is usually 5 days.
3.What payment methods are accepted for TLC1079CDR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC1079CDR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC1079CDR?
TLC1079CDR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC1079CDR 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 TLC1079CDR?
For technical support, including TLC1079CDR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC1079CDR requirements.
6.How does Aetrix verify that TLC1079CDR is sourced from the original manufacturer or authorized distributors?
All TLC1079CDR 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 TLC1079CDR meets industry standards.
7.What is the process for return or replacement of TLC1079CDR?
All TLC1079CDR units undergo pre-shipment inspection (PSI). If there is an issue with TLC1079CDR, 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 TLC1079CDR part is unused and in its original packaging.
Return procedure for TLC1079CDR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLC1079CDR Tags
-
LM358DT
STMicroelectronics
-
LM358DR
Texas Instruments
-
LM2904DR
Texas Instruments
-
LM358ADR
Texas Instruments
-
LM2904DGKR
Texas Instruments
-
LM324DR
Texas Instruments
-
MCP6006T-E/OT
Microchip Technology
-
MCP6006UT-E/OT
Microchip Technology
-
LM324PWR
Texas Instruments
-
LM2902PWR
Texas Instruments
-
LM2902DR
Texas Instruments
-
LM358P
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
