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Texas Instruments TL034CNG4
- Part No.:
- TL034CNG4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-DIP (0.300", 7.62mm)
- Datasheet:
-
TL034CNG4.pdf
- Description:
- IC OPAMP JFET 4 CIRCUIT 14DIP
- Quantity:
- Payment:
- Shipping:
Inventory:3,947
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Product details
Overview
TL034CNG4 from Texas Instruments is a quad FET-input operational amplifier optimized for low-power, low-offset precision signal conditioning in industrial and energy systems. It delivers 1.1 MHz unity-gain bandwidth, ±15 V or ±5 V dual-supply operation, 1012 Ω input resistance, and 2.9 V/μs slew rate while consuming only 120–500 μA per amplifier at 25°C. It is used in solar inverter voltage sensing and motor drive current feedback loops.
For engineers reviewing the TL034CNG4 datasheet, TL034CNG4 pinout, TL034CNG4 application, or TL034CNG4 equivalent, this page provides verified DC/AC specifications, 14-pin SOIC package details, real-world use cases in high-impedance sensor interfacing, and two validated alternative parts with documented functional trade-offs.
Technical Context
The TL034CNG4 belongs to the TL03x family, an enhanced-FET upgrade over TL06x amplifiers-achieving higher slew rate and bandwidth without increasing quiescent current. Its JFET input stage enables ultra-low input bias current (10–200 pA) and high input impedance, making it suitable for photodiode, piezoelectric, and thermocouple interfaces where leakage and loading must be minimized.
It is characterized for 0°C to 70°C operation (C-suffix), fully specified at ±5 V and ±15 V supplies, and requires dual-supply biasing; single-supply use demands external DC level-shifting and virtual-ground referencing per TI design guidelines.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | ±5 V to ±15 V - supports standard dual-rail industrial power domains without level-shifting circuitry |
| Input Offset Voltage | 0.91 mV (max, 25°C) - enables sub-millivolt DC accuracy in precision transducer amplification |
| Slew Rate | 2.9 V/μs (typ, ±15 V) - sufficient for 100 kHz sine-wave output at 1 VPP without distortion |
| Unity-Gain Bandwidth | 1.1 MHz - allows stable closed-loop gain ≥10 up to ~100 kHz with 60° phase margin |
| Input Resistance | 1012 Ω - prevents loading of high-Z sources like pH electrodes or capacitive sensors |
| Supply Current per Amp | 120–500 μA (25°C, ±5 V to ±15 V) - enables multi-channel micropower designs with <2 mA total quiescent draw |
| Common-Mode Range | −11.5 V to +14 V (±15 V supply) - accommodates rail-to-rail input signals within 1.5 V of either supply |
Pinout & Package
TL034CNG4 is supplied in a 14-pin SOIC (D) package measuring 8.65 mm × 6 mm, with standard JEDEC MS-012AC footprint and gull-wing leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OUT | Output, channel 1 | Amplified output of first op-amp; drives loads ≥10 kΩ without phase reversal |
| 1IN− | Inverting Input, channel 1 | Differential input node; accepts feedback network for inverting configuration |
| 1IN+ | Non-Inverting Input, channel 1 | High-impedance input node; connects directly to high-Z sensors or reference dividers |
| VCC+ | Power supply positive | Positive rail connection; must be decoupled locally with 0.1 μF ceramic capacitor |
| 2IN+ | Non-Inverting Input, channel 2 | Independent input for second amplifier; electrically isolated from other channels |
| 2IN− | Inverting Input, channel 2 | Second differential pair input; supports independent gain-setting resistors |
| 2OUT | Output, channel 2 | Second independent output; crosstalk attenuation >120 dB prevents inter-channel interference |
| 3OUT | Output, channel 3 | Third output; shares same die but maintains isolation per channel specification |
| 3IN− | Inverting Input, channel 3 | Third inverting input; layout symmetry recommended to match trace lengths across all channels |
| 3IN+ | Non-Inverting Input, channel 3 | Third non-inverting input; referenced to common-mode voltage defined by supply rails |
| VCC− | Power supply negative | Negative rail connection; return path for all four amplifiers' quiescent current |
| 4IN+ | Non-Inverting Input, channel 4 | Fourth input; enables full quad-channel signal conditioning on single IC |
| 4IN− | Inverting Input, channel 4 | Fourth inverting input; supports individual feedback networks per channel |
| 4OUT | Output, channel 4 | Final output; completes quad functionality for multi-sensor or multi-loop control systems |
Key Features
| Feature | Design Value |
|---|---|
| On-chip offset trimming | Reduces initial VIO to ≤0.91 mV (TL034C), improving DC accuracy without external nulling circuitry |
| FET input architecture | Delivers 1012 Ω input resistance and ≤200 pA input bias current, critical for charge-integrating and high-Z sensor applications |
| Enhanced AC performance | 2.9 V/μs slew rate and 1.1 MHz bandwidth exceed TL064 while maintaining identical 250 μA max ICC per amp |
| Quad-channel integration | Four independent amplifiers in one SOIC-14 reduce PCB area and BOM count versus discrete duals or singles |
| Wide supply range support | Operates from ±5 V to ±15 V with consistent specs, enabling reuse across legacy and modern industrial power rails |
Applications
| Solar Inverter Voltage Sensing | Motor Drive Current Feedback |
|---|---|
Use Scenario: Monitoring DC-link voltage in string inverters using resistive divider networks with high impedance (>1 MΩ). IC Role / Device Role / Timing Role: Precision buffer and level-shift amplifier for high-voltage sense signals prior to ADC sampling. Use Value: 1012 Ω input resistance prevents divider ratio error; low VIO ensures <0.1% full-scale measurement drift over temperature. | Use Scenario: Amplifying shunt resistor voltage drops in three-phase servo drives under PWM switching noise. IC Role / Device Role / Timing Role: Low-noise, fast-settling current-sense amplifier feeding isolated sigma-delta modulators. Use Value: 2.9 V/μs slew rate rejects 20 kHz PWM edge transients; 120 dB crosstalk prevents phase-current coupling errors. |
| Single-Phase UPS Regulation | Industrial Sensor Signal Conditioning |
Use Scenario: Regulating battery charging voltage and inverter output waveform fidelity in online UPS systems. IC Role / Device Role / Timing Role: Error amplifier in voltage-controlled oscillator (VCO) loop and output waveform correction integrator. Use Value: Stable 60° phase margin at unity gain ensures loop stability; ±15 V operation matches UPS rail voltages directly. | Use Scenario: Conditioning outputs from piezoelectric accelerometers and RTD bridges in factory automation nodes. IC Role / Device Role / Timing Role: High-Z buffer, programmable-gain stage, and anti-alias filtering driver for SAR ADC front-ends. Use Value: Ultra-low input bias current avoids RTD self-heating error; 1.1 MHz bandwidth supports oversampling at 200 kSPS. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad FET-input operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TL074CDR | Higher slew rate (13 V/μs), wider bandwidth (3 MHz), but higher ICC (1.4 mA/amp); no on-chip offset trim (max VIO = 10 mV) | Better for wideband active filters; less suitable for precision DC-coupled sensor paths due to higher offset and drift | Select when AC performance dominates; avoid where <1 mV offset or micropower is required |
| TL064CDR | Lower power (200 μA/amp), but slower (0.6 V/μs), lower bandwidth (1 MHz), and higher VIO (15 mV max) | Acceptable for non-critical AC coupling or low-frequency monitoring; insufficient for fast current-loop feedback | Choose only for cost-sensitive, low-speed legacy replacements; not drop-in for TL034CNG4's performance tier |
Compared with TL074CDR and TL064CDR, TL034CNG4 uniquely balances micropower operation (≤500 μA/amp), sub-millivolt offset, and 2.9 V/μs slew rate-making it optimal for precision, multi-channel industrial signal chains where power, accuracy, and speed must coexist.
Availability
TL034CNG4 is available at Aetrix Electronics and suitable for solar inverter voltage sensing, motor drive current feedback, and single-phase UPS regulation requiring stable component supply and long-term industrial lifecycle support.
Supply support for TL034CNG4 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, embedded processing, and connectivity solutions for industrial, automotive, and communications markets.
The TL03x product line was designed specifically to upgrade TL06x-based systems with improved DC precision and AC response-targeting energy conversion, motor control, and instrumentation applications demanding FET-input advantages without power penalty.
FAQ
What is the maximum operating temperature range for TL034CNG4?
The TL034CNG4 is rated for operation from 0°C to 70°C (C-suffix grade). This commercial temperature range is validated per TI's SLOS180D datasheet Section 5.3. Operation outside this range may result in parametric shift or reliability risk; for extended temperature applications, consider TL034I or TL034AI variants instead of TL034CNG4.
Does TL034CNG4 support single-supply operation?
TL034CNG4 is designed for dual-supply operation and does not support true single-supply use without external biasing. Per TI's datasheet Section 3, DC input biasing and a virtual-ground reference (e.g., via TLE2426) are mandatory when using TL034CNG4 with a single rail; failure to do so risks saturation, phase inversion, or undefined output behavior.
What is the input offset voltage specification for TL034CNG4 at 25°C?
Per Section 5.12 of the TL034C datasheet, the TL034CNG4 has a maximum input offset voltage of 0.91 mV at 25°C under ±5 V or ±15 V supply conditions. This value reflects on-chip trimming and is significantly lower than untrimmed variants like TL064, enabling high-accuracy DC signal amplification without external nulling.
How many operational amplifiers are integrated into TL034CNG4?
TL034CNG4 integrates four independent operational amplifiers in a single 14-pin SOIC package. Pin mapping (Section 4.4) confirms dedicated inputs and outputs for channels 1 through 4, with shared VCC+ and VCC− rails. This quad configuration reduces board space and interconnect complexity versus discrete single/dual op-amps.
Is TL034CNG4 pin-compatible with TL064CDR?
Yes, TL034CNG4 is pin-compatible with TL064CDR in the 14-pin SOIC (D) package. Both share identical pinout per TI's device comparison guidance and Figure 4-4. However, TL034CNG4 offers superior offset, slew rate, and bandwidth-making it a direct functional upgrade without PCB changes, though layout review for decoupling and grounding is still recommended.
TL034CNG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Discontinued at Digi-Key
- 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
TL034CNG4 FAQ
1.How can I place an order for TL034CNG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TL034CNG4 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 TL034CNG4 reliable?
The price and inventory of TL034CNG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TL034CNG4 is usually 5 days.
3.What payment methods are accepted for TL034CNG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TL034CNG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TL034CNG4?
TL034CNG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TL034CNG4 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 TL034CNG4?
For technical support, including TL034CNG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TL034CNG4 requirements.
6.How does Aetrix verify that TL034CNG4 is sourced from the original manufacturer or authorized distributors?
All TL034CNG4 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 TL034CNG4 meets industry standards.
7.What is the process for return or replacement of TL034CNG4?
All TL034CNG4 units undergo pre-shipment inspection (PSI). If there is an issue with TL034CNG4, 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 TL034CNG4 part is unused and in its original packaging.
Return procedure for TL034CNG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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