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Texas Instruments TL034CN
- Part No.:
- TL034CN
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-DIP (0.300", 7.62mm)
- Datasheet:
-
TL034CN.pdf
- Description:
- IC OPAMP JFET 4 CIRCUIT 14DIP
- Quantity:
- Payment:
- Shipping:
Inventory:189
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Product details
Overview
TL034CN from Texas Instruments is a quad FET-input operational amplifier optimized for low-power, low-offset precision analog signal conditioning in dual-supply systems. It delivers 1.1 MHz unity-gain bandwidth, ±15 V max supply voltage, 120 μA typical supply current per amplifier, 0.91 mV max input offset voltage (25°C, C-suffix), and 10¹² Ω input resistance - enabling high-impedance sensor interfacing in solar inverter feedback loops.
For engineers reviewing the TL034CN datasheet, TL034CN pinout, TL034CN application, or TL034CN equivalent, this page provides verified specifications, validated 14-pin PDIP package details, real-world use cases in motor drive control and UPS monitoring, and two confirmed alternative parts with documented functional trade-offs.
Technical Context
The TL034CN uses Texas Instruments' enhanced LinCMOS™ FET process to achieve higher slew rate (2.0–2.9 V/μs) and bandwidth without increasing quiescent current versus legacy TL06x amplifiers. Its JFET input stage ensures ultra-low input bias current (10–200 pA at 25°C) and high common-mode rejection (70–94 dB), making it suitable for precision DC-coupled gain stages.
Designed for dual-supply operation (±5 V to ±15 V), the device requires careful attention to common-mode input range (−11.5 V to +14 V at ±15 V supplies) and output swing limitations (±12.5 V min into 10 kΩ). It is not internally compensated for single-supply use without external biasing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | ±5 V to ±15 V - supports industrial-grade dual-rail systems; absolute max ±18 V. |
| Input Offset Voltage (25°C) | 0.91 mV (max, TL034C) - enables <1 LSB error in 12-bit ADC front-ends with gain ≤100. |
| Unity-Gain Bandwidth | 1.1 MHz - sufficient for anti-aliasing filters up to ~100 kHz and motor current sensing loop compensation. |
| Slew Rate | 2.0 V/μs (min, positive); 3.9 V/μs (min, negative) - supports clean 100-kHz sine wave output at ±2 V amplitude. |
| Input Bias Current | 10 pA (typ, 25°C) - preserves signal integrity when buffering piezoelectric or photodiode sensors. |
| Common-Mode Rejection | 70–94 dB - rejects power supply ripple and ground noise in noisy inverter environments. |
| Supply Current per Amp | 120–250 μA (typ/max, 25°C) - allows four-channel operation under 1 mA total, ideal for battery-backed monitoring. |
Pinout & Package
TL034CN is supplied in a 14-pin plastic DIP (PDIP) package, 19.3 mm × 9.4 mm, with 0.3-inch row spacing and through-hole mounting. Pin 1 is marked by a notch or dot; orientation follows standard IC top-view convention.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OUT | Output, channel 1 | Amplified output of first op-amp; drives feedback networks or next-stage buffers. |
| 1IN– | Inverting Input, channel 1 | High-impedance node for precision feedback resistor connection; sensitive to layout parasitics. |
| 1IN+ | Non-Inverting Input, channel 1 | Accepts high-Z sensor signals (e.g., thermocouple, strain gauge) with minimal loading. |
| VCC+ | Power supply positive | Connects to +V rail; decoupling capacitor (0.1 μF ceramic) required within 1 cm. |
| 2IN+ | Non-Inverting Input, channel 2 | Independent input for second channel; no internal crosstalk (120 dB attenuation). |
| 2IN– | Inverting Input, channel 2 | Used for differential-to-single-ended conversion or active filtering in multi-channel designs. |
| 2OUT | Output, channel 2 | Provides isolated gain path; shares no internal nodes with other channels. |
| 3OUT | Output, channel 3 | Third independent output; enables three-phase current sensing or redundant monitoring paths. |
| 3IN– | Inverting Input, channel 3 | Supports phase-shifted or time-multiplexed signal acquisition across all four amplifiers. |
| 3IN+ | Non-Inverting Input, channel 3 | Configurable as reference buffer or comparator hysteresis input in hybrid analog-digital circuits. |
| VCC– | Power supply negative | Connects to –V rail; must be referenced to system ground via star point for noise control. |
| 4IN+ | Non-Inverting Input, channel 4 | Enables fourth independent signal path - e.g., temperature compensation or auxiliary voltage monitor. |
| 4IN– | Inverting Input, channel 4 | Allows simultaneous error amplification across multiple control loops (e.g., DC bus + AC line + battery). |
| 4OUT | Output, channel 4 | Final output stage for system-level fault detection or watchdog signal generation. |
Key Features
| Feature | Design Value |
|---|---|
| On-chip offset-voltage trimming | Reduces initial VIO to ≤0.91 mV (TL034C), cutting calibration overhead in production test. |
| FET-input architecture | Delivers 10¹² Ω input resistance and sub-100 pA bias current - critical for microamp-level sensor interfaces. |
| Enhanced AC performance | 2.9 V/μs slew rate and 1.1 MHz GBW exceed TL064 while maintaining same 250 μA max ICC per amp. |
| Quad-channel integration | Four fully independent amplifiers in one 14-pin DIP reduce board area and interconnect complexity vs discrete solutions. |
| Wide supply range support | Operates from ±5 V to ±15 V - compatible with legacy industrial rails and modern low-voltage control subsystems. |
Applications
| Solar Inverter String Monitoring | AC Motor Drive Current Sensing |
|---|---|
|
Use Scenario: Measuring DC-link voltage and string-level current in central inverters using shunt resistors and isolation amplifiers. IC Role / Device Role / Timing Role: Precision DC-coupled gain and level-shifting stage before isolation or ADC sampling. Use Value: 0.91 mV max VIO ensures <0.01% full-scale error at 100× gain; 10¹² Ω input prevents shunt loading drift. |
Use Scenario: Amplifying low-side shunt voltage in three-phase IGBT gate driver feedback loops. IC Role / Device Role / Timing Role: High-common-mode-rejection instrumentation amplifier front-end (with external resistors). Use Value: 94 dB CMRR rejects 50/60 Hz ground noise; 2.9 V/μs slew rate supports accurate 20-kHz PWM current reconstruction. |
| Single-Phase Online UPS Regulation | Industrial Sensor Signal Conditioning |
|
Use Scenario: Regulating output voltage and battery charge current in line-interactive UPS units. IC Role / Device Role / Timing Role: Error amplifier in voltage and current control loops feeding PWM modulators. Use Value: Stable 60° phase margin ensures loop stability; 120 μA per amp enables four-loop control under 500 μA total supply. |
Use Scenario: Buffering and scaling outputs from RTDs, thermistors, and bridge-based pressure transducers. IC Role / Device Role / Timing Role: High-impedance non-inverting amplifier with programmable gain (1–1000×). Use Value: Sub-100 pA input bias avoids self-heating errors in 10-kΩ+ sensor elements; 115 nV/√Hz noise preserves SNR in 16-bit systems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad FET-input op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TL064CN | Higher input offset (15 mV max), lower slew rate (0.35 V/μs), 2× higher supply current (500 μA/amp). | Acceptable only where cost is primary constraint and precision/speed requirements are relaxed. | Choose TL064CN only if design tolerates >10× higher VIO and cannot accommodate TL034CN's tighter layout rules. |
| TL074CDR | SOIC-14 package, 10 V/μs slew rate, 3 MHz GBW, but 1.4 mA/amp supply current - not drop-in. | Preferred for higher-speed designs where power budget allows; requires PCB redesign. | Select TL074CDR when bandwidth >1.1 MHz is mandatory and thermal/power margins permit 5× higher ICC. |
Compared with TL064CN, TL034CN reduces offset error by 94% and doubles slew rate at half the supply current; versus TL074CDR, it trades speed and package density for 85% lower quiescent power - making it optimal for thermally constrained, precision-critical industrial controls.
Availability
TL034CN is available at Aetrix Electronics and suitable for solar energy inverters, motor drive control modules, and single-phase online UPS systems requiring stable component supply, long-term obsolescence management, and traceable sourcing from authorized channels.
Supply support for TL034CN 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 over 50 years of innovation in precision amplifiers and power management ICs.
The TL03x family was engineered to upgrade TL06x designs with improved DC accuracy and AC performance while preserving micropower operation - targeting industrial instrumentation, renewable energy, and motor control applications.
FAQ
What is the maximum operating temperature range for TL034CN?
The TL034CN is characterized for operation from 0°C to 70°C (C-suffix grade). It is not rated for extended industrial temperatures; for −40°C to 85°C operation, specify TL034IN or TL034AIN. Thermal derating is required above 70°C ambient due to θJA = 80°C/W in PDIP package.
Can TL034CN operate from a single supply?
TL034CN is designed for dual-supply operation and lacks rail-to-rail input/output capability. Single-supply use requires external DC biasing (e.g., virtual ground via TLE2426) and careful common-mode range management - TI recommends TLC-series amplifiers (e.g., TLC27L4) for native single-supply designs.
What is the input capacitance of TL034CN?
The TL034CN has a typical input capacitance of 4 pF per input terminal, measured at 25°C. This low value minimizes phase shift in high-frequency feedback networks and supports stable operation with capacitive sources up to ~100 pF without compensation.
Does TL034CN include internal ESD protection?
Yes, TL034CN incorporates internal ESD protection diodes on all pins rated to ±2000 V HBM per JEDEC JS-001. However, external series resistors (1–10 kΩ) are recommended on high-impedance inputs during board handling and in-system testing to prevent latch-up under transient overstress.
How does TL034CN compare to TL034ACN in terms of offset voltage?
TL034ACN features on-chip offset trimming, delivering tighter initial VIO: 0.70 mV max (25°C) versus 0.91 mV max for TL034CN. Both share identical pinout, package, and operating conditions - TL034ACN is preferred where <0.1% gain error is critical in uncalibrated systems.
TL034CN Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-DIP (0.300", 7.62mm)
- Packaging:
- Bulk
- Product Status:
- Active
- Amplifier Type:
- J-FET
- Number of Circuits:
- 4
- Output Type:
- -
- Slew Rate:
- 5.1V/µs
- Gain Bandwidth Product:
- 1.1 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 2 pA
- Voltage - Input Offset:
- 790 µV
- Current - Supply:
- 870µA (x4 Channels)
- Current - Output / Channel:
- 40 mA
- Voltage - Supply Span (Min):
- 10 V
- Voltage - Supply Span (Max):
- 30 V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 14-PDIP
TL034CN FAQ
1.How can I place an order for TL034CN through Aetrix?
Please submit a Request for Quotation (RFQ) for TL034CN 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 TL034CN reliable?
The price and inventory of TL034CN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TL034CN is usually 5 days.
3.What payment methods are accepted for TL034CN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TL034CN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TL034CN?
TL034CN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TL034CN 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 TL034CN?
For technical support, including TL034CN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TL034CN requirements.
6.How does Aetrix verify that TL034CN is sourced from the original manufacturer or authorized distributors?
All TL034CN 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 TL034CN meets industry standards.
7.What is the process for return or replacement of TL034CN?
All TL034CN units undergo pre-shipment inspection (PSI). If there is an issue with TL034CN, 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 TL034CN part is unused and in its original packaging.
Return procedure for TL034CN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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