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Texas Instruments LF353PG4
- Part No.:
- LF353PG4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
LF353PG4.pdf
- Description:
- IC OPAMP JFET 2 CIRCUIT 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:1,313
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Product details
Overview
LF353PG4 from Texas Instruments is a JFET-input dual operational amplifier optimized for high-speed, low-input-bias-current applications including precision integrators, sample-and-hold circuits, and DAC output buffering. It delivers 3 MHz gain-bandwidth, 13 V/µs slew rate, and 50 pA typical input bias current across 0°C to 70°C operation.
For engineers reviewing the LF353PG4 datasheet, LF353PG4 pinout, LF353PG4 application, or LF353PG4 equivalent, key selection criteria include dual-channel JFET input stage performance, ±18 V absolute maximum supply rating, SOIC-8/PDIP-8 package compatibility, and suitability for motor control feedback loops and pro-audio signal conditioning.
Technical Context
The LF353PG4 integrates two independent JFET-input op-amps on a single monolithic die, each featuring high-impedance (10¹² Ω) inputs, internally trimmed offset voltage, and bipolar output stages with 200 Ω series protection. Its architecture supports both single-supply and dual-supply operation while maintaining stable phase margin in unity-gain configurations.
Input common-mode range extends from VCC– + 4 V to VCC+ – 4 V, enabling rail-to-rail input capability on the positive side but not the negative side. Output swing reaches ±13.5 V into 10 kΩ at ±15 V supplies, with crosstalk attenuation exceeding 120 dB at 1 kHz between channels.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Bandwidth | 3 MHz typical - enables stable closed-loop operation up to ~300 kHz with moderate gain. |
| Slew Rate | 13 V/µs typical - supports fast transient response in pulse amplification and active filtering. |
| Input Bias Current | 50 pA typical at 25°C - permits use of high-value feedback resistors without significant DC error. |
| Input Impedance | 10¹² Ω typical - minimizes loading on high-impedance sensors and passive networks. |
| Supply Voltage Range | ±3.5 V to ±18 V - accommodates industrial and audio systems requiring wide dynamic range. |
| Common-Mode Range | VCC– + 4 V to VCC+ – 4 V - allows input signals near positive rail but not full rail-to-rail operation. |
| Output Short-Circuit Duration | Unlimited - internal 200 Ω series resistance provides robust fault tolerance without external limiting. |
Pinout & Package
LF353PG4 is supplied in an 8-pin PDIP (Plastic Dual In-line Package) with 9.81 mm × 6.35 mm body size and through-hole mounting. The package is RoHS-compliant and rated for 0°C to 70°C ambient operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OUT | Output | Amplifier A output node; drives loads up to ±13.5 V with 200 Ω series impedance. |
| 1IN– | Inverting input | Differential input for Amplifier A; accepts signals within specified common-mode range. |
| 1IN+ | Noninverting input | Differential input for Amplifier A; high-impedance JFET node with 50 pA bias current. |
| VCC– | Negative supply | Reference for dual-supply operation; must be ≥ –18 V and ≤ –3.5 V for reliable function. |
| 2IN+ | Noninverting input | Differential input for Amplifier B; electrically isolated from Amplifier A except via shared supply rails. |
| 2IN– | Inverting input | Differential input for Amplifier B; matched characteristics to Amplifier A per datasheet specifications. |
| 2OUT | Output | Amplifier B output node; identical performance and protection as 1OUT. |
| VCC+ | Positive supply | Reference for dual-supply operation; must be ≤ +18 V and ≥ +3.5 V for recommended conditions. |
Key Features
| Feature | Design Value |
|---|---|
| Low input noise current | 0.01 pA/√Hz typical - critical for low-noise transimpedance amplifiers in photodiode interfaces. |
| Internally trimmed offset voltage | 10 mV typical max - reduces need for external nulling circuitry in DC-coupled instrumentation paths. |
| High CMRR | 100 dB typical - rejects common-mode interference in noisy industrial environments like motor drive feedback. |
| ESD protection | ±2000 V HBM - meets standard handling requirements without additional input protection diodes. |
| Thermal resistance (PDIP) | 55.1 °C/W junction-to-ambient - enables operation at full 6.5 mA supply current without forced cooling below 70°C ambient. |
Applications
| Motor Control Feedback | Pro Audio Signal Conditioning |
|---|---|
Use Scenario: Closed-loop speed regulation in AC inverter drives using hall-effect sensor outputs. IC Role / Device Role / Timing Role: Dual-channel amplifier buffers and conditions low-level analog feedback signals before ADC sampling. Use Value: 50 pA input bias current prevents drift in high-resistance sensor interface networks, preserving long-term stability. | Use Scenario: Input preamplification and tone-shaping in analog mixing consoles. IC Role / Device Role / Timing Role: First-stage gain block with JFET input preserving signal integrity in high-Z microphone and line-level paths. Use Value: 13 V/µs slew rate avoids slew-induced distortion on transient-rich audio waveforms up to 20 kHz. |
| Solar Inverter Monitoring | Oscilloscope Vertical Amplifier |
Use Scenario: Isolated DC bus voltage sensing and current shunt amplification in grid-tied solar inverters. IC Role / Device Role / Timing Role: Precision differential amplifier front-end for isolation amplifier inputs and shunt-based current measurement. Use Value: 10¹² Ω input impedance eliminates loading errors on high-precision voltage divider networks used for ±1000 V monitoring. | Use Scenario: Vertical deflection amplifier driving CRT cathode-ray tube in benchtop oscilloscopes. IC Role / Device Role / Timing Role: High-slew-rate gain stage delivering fast step response and minimal overshoot to display analog waveforms. Use Value: 3 MHz bandwidth ensures flat frequency response up to 1 MHz with <1 dB gain error, supporting 20 MHz system bandwidth via cascaded stages. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual JFET-input op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLC272CP | Lower supply current (1.4 mA), reduced GBW (2.2 MHz), higher input offset (10 mV typ). | Better suited for battery-powered portable instruments where power efficiency outweighs speed. | Select TLC272CP when operating from single 5 V supplies and lower quiescent current is prioritized over slew rate. |
| TL072CP | Higher slew rate (16 V/µs), same GBW (3 MHz), improved noise floor (18 nV/√Hz vs 25 nV/√Hz). | Preferred in high-fidelity audio paths where lower voltage noise dominates performance requirements. | Choose TL072CP when optimizing for low-voltage-noise performance in sensitive analog front-ends. |
Compared with LF353PG4, TLC272CP trades bandwidth and slew for lower power, while TL072CP improves voltage noise and slew at similar cost and pinout-neither is pin-compatible with LF353PG4 due to differing internal compensation and ESD structures.
Availability
LF353PG4 is available at Aetrix Electronics and suitable for motor control feedback loops, pro audio signal chains, solar inverter monitoring circuits, and oscilloscope vertical amplifiers requiring stable component supply across extended production lifecycles.
Supply support for LF353PG4 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 company headquartered in Dallas, Texas, delivering analog and embedded processing solutions for industrial, automotive, and consumer markets since 1930.
The LF353 product line was designed for cost-sensitive, high-speed analog signal conditioning in industrial automation and test equipment, emphasizing JFET input performance with robust process reliability.
FAQ
What is the maximum operating temperature range for the LF353PG4?
The LF353PG4 is characterized for operation from 0°C to 70°C ambient temperature. This range is defined in the Recommended Operating Conditions section of the TI datasheet SLOS012C. Operation outside this range may result in degraded electrical performance or reliability risk. The LF353PG4 does not support extended temperature grades such as –40°C to 125°C.
Does the LF353PG4 support single-supply operation?
Yes, the LF353PG4 supports single-supply operation, though its input common-mode range excludes the negative rail (VCC–). When operated from a single +15 V supply with ground reference, the input must remain above +4 V to stay within specification. Output swing remains asymmetric, typically reaching ~0.5 V above ground and ~13.5 V below VCC+, making it suitable for AC-coupled or biased DC applications.
What is the purpose of the 200 Ω output resistance in the LF353PG4?
The 200 Ω series resistance in the LF353PG4 output stage provides inherent short-circuit protection without requiring external current-limiting components. This design limits peak output current to approximately ±67 mA under hard short conditions at ±15 V supplies, preventing thermal runaway and enabling unlimited duration of output short-circuit events per Absolute Maximum Ratings. It also damps capacitive load instability in many configurations.
How does the LF353PG4 compare to the TL072 in terms of noise performance?
The LF353PG4 specifies 25 nV/√Hz typical input voltage noise at 1 kHz, whereas the TL072 achieves 18 nV/√Hz under identical conditions. Both devices exhibit similarly low input current noise (0.01 pA/√Hz), but the TL072's lower voltage noise makes it preferable in high-gain, low-source-impedance applications like microphone preamplifiers. The LF353PG4 remains viable where cost and legacy design compatibility are primary concerns.
Is the LF353PG4 RoHS compliant?
Yes, the LF353PG4 is RoHS compliant, as confirmed by Texas Instruments' official packaging documentation and orderable addendum. The device uses NiPdAu (nickel-palladium-gold) lead finish and meets EU Directive 2011/65/EU requirements. RoHS status is explicitly marked "Yes" in TI's packaging information table for all active LF353P and LF353PE4 variants, including LF353PG4.
LF353PG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Amplifier Type:
- J-FET
- Number of Circuits:
- 2
- Output Type:
- -
- Slew Rate:
- 13V/µs
- Gain Bandwidth Product:
- 3 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 50 pA
- Voltage - Input Offset:
- 5 mV
- Current - Supply:
- 3.6mA (x2 Channels)
- Current - Output / Channel:
- 40 mA
- Voltage - Supply Span (Min):
- 7 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
LF353PG4 FAQ
1.How can I place an order for LF353PG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for LF353PG4 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 LF353PG4 reliable?
The price and inventory of LF353PG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LF353PG4 is usually 5 days.
3.What payment methods are accepted for LF353PG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LF353PG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LF353PG4?
LF353PG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LF353PG4 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 LF353PG4?
For technical support, including LF353PG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LF353PG4 requirements.
6.How does Aetrix verify that LF353PG4 is sourced from the original manufacturer or authorized distributors?
All LF353PG4 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 LF353PG4 meets industry standards.
7.What is the process for return or replacement of LF353PG4?
All LF353PG4 units undergo pre-shipment inspection (PSI). If there is an issue with LF353PG4, 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 LF353PG4 part is unused and in its original packaging.
Return procedure for LF353PG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LF353PG4 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
Texas Instruments
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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
Texas Instruments
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LM2902PWR
Texas Instruments
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LM2902DR
Texas Instruments
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LM358P
Texas Instruments
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