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Texas Instruments TL070IDRG4
- Part No.:
- TL070IDRG4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TL070IDRG4.pdf
- Description:
- IC OPAMP JFET 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,193
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Product details
Overview
TL070IDRG4 from Texas Instruments is a JFET-input operational amplifier optimized for high-fidelity audio preamplification, featuring 13 V/µs typical slew rate, 0.003% typical total harmonic distortion at 1 kHz, and 18 nV/√Hz input voltage noise at 1 kHz. It operates from ±4 V to ±18 V supplies, delivers ±12 V output swing into 10 kΩ at full temperature range (–40°C to 85°C), and integrates JFET input stage for >1 TΩ input resistance.
For engineers reviewing the TL070IDRG4 datasheet, TL070IDRG4 pinout, TL070IDRG4 application, or TL070IDRG4 equivalent, this page provides verified specifications, SOIC-8 package layout, audio-grade performance context, offset nulling capability, and validated alternative options for low-noise analog signal conditioning.
Technical Context
The TL070IDRG4 uses a dual-JFET input stage with bipolar output transistors on a monolithic die, enabling high input impedance (>10¹² Ω) and low input bias current (65 pA typ at 25°C). Its internal compensation ensures stable unity-gain operation without external components.
It features dedicated offset null pins (N1/COMP and OFFSET N2), rail-to-rail common-mode input range including VCC+, and latch-up-free architecture. The device supports differential input voltages up to ±30 V and includes output short-circuit protection with unlimited duration rating.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Slew Rate | 13 V/µs typical - enables clean 20 kHz full-scale audio signal amplification without slew-induced distortion |
| Total Harmonic Distortion | 0.003% typical at 1 kHz - meets high-fidelity preamp requirements for studio-grade signal integrity |
| Input Voltage Noise | 18 nV/√Hz at 1 kHz - critical for low-level microphone and phono-stage applications where noise floor dominates SNR |
| Input Bias Current | 65 pA typical at 25°C - preserves signal integrity in high-impedance sensor interfaces and passive filter networks |
| Unity-Gain Bandwidth | 3 MHz - supports stable gain-of-10 inverting amplifiers with bandwidth up to ~300 kHz |
| Common-Mode Input Range | –12 V to +15 V at ±15 V supply - allows direct interfacing with signals referenced to VCC+ or ground |
| Supply Voltage Range | ±4 V to ±18 V - compatible with legacy ±12 V, ±15 V, and modern ±5 V analog rails |
Pinout & Package
TL070IDRG4 is housed in an 8-pin SOIC (Small Outline Integrated Circuit) package (D package), 3.9 mm wide, with standard JEDEC MS-012 footprint and RoHS-compliant lead finish. Thermal resistance θJA is 97°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | N1/COMP | Offset null input - connects to potentiometer wiper for precision DC offset adjustment |
| 2 | IN– | Inverting input - high-impedance JFET node for feedback network connection |
| 3 | IN+ | Non-inverting input - high-impedance JFET node for reference or signal source connection |
| 4 | VCC– | Negative supply rail - must be decoupled locally to minimize noise coupling |
| 5 | OFFSET N2 | Offset null output - connects to potentiometer end terminal for balanced nulling circuit |
| 6 | OUT | Amplified output - capable of ±12 V swing into 10 kΩ load across full temperature range |
| 7 | VCC+ | Positive supply rail - requires local 0.1 µF ceramic decoupling capacitor |
| 8 | COMP | Internal compensation node - not user-accessible; internal 18 pF capacitor sets dominant pole |
Key Features
| Feature | Design Value |
|---|---|
| JFET input stage | Input resistance >10¹² Ω and input bias current ≤20 nA over –40°C to 85°C - preserves gain accuracy in high-Z sensor front-ends |
| Offset voltage nulling | Dedicated N1/COMP and OFFSET N2 pins - enables sub-mV DC offset correction without external op-amps or digital trimming |
| Rail-inclusive common-mode range | Common-mode input extends to VCC+ - eliminates level-shifting for single-supply-compatible configurations using split-rail references |
| Output short-circuit protection | Unlimited short-circuit duration rating - prevents thermal runaway during fault conditions in production audio equipment |
| Latch-up free operation | Guaranteed immunity to CMOS-like latch-up under overvoltage or ESD stress - enhances reliability in unregulated industrial environments |
Applications
| Microphone Preamplifier | Phono Equalization Stage |
|---|---|
Use Scenario: Low-noise amplification of dynamic or condenser microphone signals prior to ADC sampling. IC Role / Device Role / Timing Role: Primary gain stage with adjustable offset nulling and high-Z input buffering. Use Value: 18 nV/√Hz input noise and 0.003% THD preserve transient detail and harmonic richness in vocal capture. |
Use Scenario: RIAA equalization and gain staging for vinyl record playback systems. IC Role / Device Role / Timing Role: Inverting active filter stage implementing precise bass boost and treble cut response. Use Value: 3 MHz unity-gain bandwidth and low distortion ensure accurate RIAA curve fidelity up to 20 kHz. |
| Studio Line-Level Driver | Instrument Signal Buffer |
Use Scenario: Driving long cables between mixing console outputs and powered monitor inputs. IC Role / Device Role / Timing Role: Unity-gain buffer with high output drive capability and low output impedance. Use Value: ±12 V output swing into 2 kΩ and 13 V/µs slew rate prevent cable-induced high-frequency roll-off and clipping. |
Use Scenario: Impedance transformation between high-output-impedance guitar pickups and low-Z effects processors. IC Role / Device Role / Timing Role: Non-inverting voltage follower with JFET input preserving pickup resonance. Use Value: >1 TΩ input resistance prevents loading of passive magnetic pickups, maintaining natural tone and sustain. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar JFET-input op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TL071CDR | Single-channel variant with identical electrical specs but no offset null pins; SOIC-8 package | Lacks N1/COMP and OFFSET N2 terminals - unsuitable for precision DC-coupled designs requiring <1 mV offset | Select when offset drift is managed via system-level calibration or AC coupling is acceptable |
| OPA134UA | Lower input voltage noise (8 nV/√Hz), higher slew rate (20 V/µs), wider supply range (±2.5 V to ±18 V) | Higher cost and different pinout - requires PCB redesign; superior for ultra-low-noise microphone preamps | Select when THD <0.001% and noise floor <10 nV/√Hz are mandatory, and BOM cost is secondary |
Compared with TL071CDR, TL070IDRG4 provides essential offset nulling for DC-critical audio paths; compared with OPA134UA, it offers proven cost-effective performance for professional audio gear where 0.003% THD and 18 nV/√Hz meet specification without premium pricing.
Availability
TL070IDRG4 is available at Aetrix Electronics and suitable for high-fidelity audio preamplifiers, studio line drivers, and instrument signal buffers requiring stable component supply across extended production lifecycles.
Supply support for TL070IDRG4 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 TL070IDRG4 belongs to TI's legacy JFET-input op-amp family engineered specifically for low-noise, low-distortion audio signal conditioning - balancing performance, reliability, and manufacturability for professional audio equipment.
FAQ
What is the maximum supply voltage for TL070IDRG4?
The TL070IDRG4 supports absolute maximum supply voltages of ±18 V. Operation at ±15 V is standard per datasheet test conditions, delivering ±12 V output swing into 10 kΩ. Sustained operation above ±15 V requires verification of power dissipation limits and thermal derating per the 97°C/W θJA rating.
Does TL070IDRG4 require external compensation capacitors?
No, TL070IDRG4 is internally compensated for unity-gain stability. The datasheet confirms use of an internal 18 pF capacitor (see Figure 1 and Typical Characteristics notes), eliminating need for external compensation in standard configurations like voltage followers or gain-of-10 inverting amplifiers.
How is offset voltage adjusted on TL070IDRG4?
TL070IDRG4 provides dedicated offset null pins: Pin 1 (N1/COMP) and Pin 5 (OFFSET N2). A 10 kΩ potentiometer is connected with its ends to VCC+ and VCC–, and its wiper to Pin 1; one end of the potentiometer connects to Pin 5. This configuration enables sub-millivolt DC offset correction across temperature.
Is TL070IDRG4 suitable for single-supply operation?
TL070IDRG4 supports single-supply operation when biased appropriately: its common-mode input range extends to VCC+, allowing IN+ or IN– to accept signals near the positive rail. However, output swing does not reach VCC–, so a virtual ground or level-shifting network is required for true rail-to-rail input/output behavior.
What is the input bias current specification for TL070IDRG4 over temperature?
TL070IDRG4 specifies input bias current of 65 pA typical at 25°C and ≤20 nA over the full –40°C to +85°C operating range. This JFET-input characteristic remains stable across temperature, making it suitable for high-impedance sensor interfaces where bias current drift would otherwise degrade accuracy.
TL070IDRG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Amplifier Type:
- J-FET
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 13V/µs
- Gain Bandwidth Product:
- 5.25 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 65 pA
- Voltage - Input Offset:
- 3 mV
- Current - Supply:
- 1.4mA
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- 7 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
TL070IDRG4 FAQ
1.How can I place an order for TL070IDRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TL070IDRG4 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 TL070IDRG4 reliable?
The price and inventory of TL070IDRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TL070IDRG4 is usually 5 days.
3.What payment methods are accepted for TL070IDRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TL070IDRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TL070IDRG4?
TL070IDRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TL070IDRG4 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 TL070IDRG4?
For technical support, including TL070IDRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TL070IDRG4 requirements.
6.How does Aetrix verify that TL070IDRG4 is sourced from the original manufacturer or authorized distributors?
All TL070IDRG4 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 TL070IDRG4 meets industry standards.
7.What is the process for return or replacement of TL070IDRG4?
All TL070IDRG4 units undergo pre-shipment inspection (PSI). If there is an issue with TL070IDRG4, 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 TL070IDRG4 part is unused and in its original packaging.
Return procedure for TL070IDRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TL070IDRG4 Tags
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LM358DT
STMicroelectronics
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LM358DR
Texas Instruments
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LM2904DR
Texas Instruments
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LM358ADR
Texas Instruments
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LM2904DGKR
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LM324DR
Texas Instruments
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MCP6006T-E/OT
Microchip Technology
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MCP6006UT-E/OT
Microchip Technology
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LM324PWR
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LM2902PWR
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LM2902DR
Texas Instruments
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LM358P
Texas Instruments
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