OPA2604APG4 Texas Instruments Integrated Circuit (Dual-In-Line Packages) In Stock
OPA2604APG4 is a dual FET-input precision operational amplifier from Texas Instruments with 100 dB typical common-mode rejection ratio and 0.0001 µA maximum bias current in an 8-pin DIP package. It delivers wide bandwidth and low noise for high-fidelity audio and precision instrumentation circuits. Available from stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Dual-In-Line Packages
- Pin Count
- 8
- Lifecycle
- OBSOLETE
- Datasheet
- OPA2604APG4 Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -25.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of OPA2604APG4?
- Dual FET input with ultra-low bias current of 0.0001 µA maximum, minimizing input loading on high-impedance sensors and audio sources
- 100 dB typical / 80 dB minimum common-mode rejection ratio (CMRR) for excellent noise rejection in differential measurement circuits
- Voltage-feedback architecture with internal frequency compensation enables stable operation across a wide range of closed-loop gains
- 8-pin DIP package allows easy prototyping and through-hole assembly for audio, instrumentation, and industrial amplifier designs
What is OPA2604APG4 used for?
OPA2604APG4 is a preferred choice for high-fidelity audio preamplifiers, equalizers, and active filters where its FET input stage delivers extremely low noise and negligible input current that would otherwise degrade signal quality. Precision instrumentation amplifiers for bridge sensors, pH electrodes, and photodiode readout circuits benefit from its 0.0001 µA bias current and 100 dB CMRR. The dual-amplifier configuration in a compact DIP-8 package also suits two-channel analog signal conditioning in test and measurement equipment.
What are the specifications of OPA2604APG4?
| YTEOL | 0 |
| Amplifier Type | OPERATIONAL AMPLIFIER |
| Architecture | VOLTAGE-FEEDBACK |
| Average Bias Current-Max (IIB) | 0.0001 µA |
| Common-mode Reject Ratio-Min | 80dB |
| Common-mode Reject Ratio-Nom | 100dB |
| Frequency Compensation | YES |
| Input Offset Voltage-Max | 5000 µV |
| JESD-30 Code | R-PDIP-T8 |
| JESD-609 Code | e4 |
| Low-Bias | YES |
| Low-Offset | NO |
| Micropower | NO |
| Neg Supply Voltage Limit-Max | -25 V |
| Neg Supply Voltage-Nom (Vsup) | -15 V |
| Number of Functions | 2 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | DIP8,.3 |
| Package Shape | RECTANGULAR |
| Package Style | IN-LINE |
| Packing Method | TUBE |
| Power | NO |
| Programmable Power | NO |
| Qualification Status | Not Qualified |
| Slew Rate-Min | 15V/us |
| Slew Rate-Nom | 25V/us |
| Supply Current-Max | 12mA |
| Supply Voltage Limit-Max | 25V |
| Supply Voltage-Nom (Vsup) | 15V |
| Surface Mount | NO |
| Technology | BIPOLAR |
| Temperature Grade | OTHER |
| Terminal Finish | NICKEL PALLADIUM GOLD |
| Terminal Form | THROUGH-HOLE |
| Terminal Pitch | 2.54mm |
| Terminal Position | DUAL |
| Unity Gain BW-Nom | 20000 |
| Voltage Gain-Min | 10000 |
| Wideband | NO |
| Package | Dual-In-Line Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.33.00.01 |
Where can I find the OPA2604APG4 datasheet?
OPA2604APG4 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for OPA2604APG4?
Compatible alternatives and drop-in replacements for OPA2604APG4:
Frequently Asked Questions
What makes the FET input stage of OPA2604APG4 suitable for high-impedance sensor interfaces?
OPA2604APG4 features a JFET input stage with a maximum input bias current of only 0.0001 µA (100 pA). This ultra-low bias current is critical when interfacing with high-impedance sources such as pH electrodes, photodiodes, or electrostatic microphones, where even small input currents would create voltage errors across the source impedance. This characteristic makes it far superior to bipolar-input op-amps in these applications.
How does the 100 dB CMRR of OPA2604APG4 benefit differential signal acquisition in noisy environments?
A common-mode rejection ratio of 100 dB typical (80 dB minimum) means OPA2604APG4 attenuates common-mode interference — such as 50/60 Hz power-line noise — by a factor of 100,000:1. This allows the amplifier to extract small differential signals from sensors operating in electrically noisy industrial or laboratory environments without adding a separate instrumentation amplifier stage, simplifying the signal chain and reducing board cost.
For which audio applications is OPA2604APG4 commonly chosen over bipolar op-amps?
OPA2604APG4 is widely used in high-end audio preamplifiers, phono stages, and active crossover filters because its FET input produces very low 1/f (flicker) noise below 1 kHz and an extremely flat frequency response. Bipolar op-amps with higher bias currents introduce additional noise when driven by high-impedance sources such as moving-magnet cartridges (47 kΩ load) or ribbon microphones, making the OPA2604APG4 a preferred upgrade in audiophile and professional audio equipment.
What supply voltage range does OPA2604APG4 support and is the DIP-8 package suitable for prototyping?
OPA2604APG4 operates from dual supplies of ±4.5 V to ±24 V, allowing it to accommodate both low-voltage and high-swing signal chains. The 8-pin plastic DIP (PDIP-8) package is ideal for breadboard prototyping and through-hole PCB assembly, with 2.54 mm lead pitch compatible with standard IC sockets. This makes it convenient for audio hobbyists and engineers to evaluate the amplifier before committing to a surface-mount layout.
Related Guides
STM32H725IGT3 Selection Guide: Memory, Package, Temperature, and Supply
Choose the right STM32H725 variant by comparing Flash, package, pin count, temperature grade, connectivity, and production requirements.
Aug 1, 2026
STM32H725IGT3 High-Performance MCU Design Guide
Design STM32H725IGT3 systems for reliable 550 MHz operation with practical power, clock, cache, DMA, PCB, ADC, and recovery guidance.
Jul 31, 2026
150141VS73100 Violet SMD LED Selection Guide: Color, Drive, and Sourcing
Select the 150141VS73100 by wavelength, brightness, drive current, 3528 fit, reliability, and traceable sourcing requirements.
Jul 31, 2026
STEF05SGR 5 V eFuse Protection Design Guide
Design a reliable 5 V STEF05SGR eFuse stage with current-limit math, capacitor sizing, thermal analysis, fault recovery, and PCB layout guidance.
Jul 30, 2026
Why Buy from FindMyChip
About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
More from Texas Instruments
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“Response time is incredible — usually under 4 hours. They understand that production lines can't wait.”
You May Also Like
ACS770ECB-200U-PFF-T
Allegro Microsystems
Integrated Circuit
ACS770KCB-150U-PFF-T
Allegro Microsystems
Integrated Circuit
MC33901WEF
NXP
Integrated Circuit
MC7808BDTRKG
ON Semiconductor
Integrated Circuit
PA94EC
Apex Microtechnology
Integrated Circuit
AP7315-28SR-7
Diodes Inc.
Integrated Circuit
74HCT245D
Nexperia
Integrated Circuit
CY62256VNLL-70ZXCT
Cypress Semiconductor
Integrated Circuit
EPM7032AETC44-4N
Intel
Integrated Circuit
EPM3512AQC208-10N
Intel
Integrated Circuit
EPM3256ATC144-7N
Intel
Integrated Circuit
EPM3256AQC208-7N
Intel
Integrated Circuit
EPM3256AQC208-10N
Intel
Integrated Circuit
EPM3128ATC100-7N
Intel
Integrated Circuit
EPM1270F256C4N
Intel
Integrated Circuit
EPF8282ATC100-4N
Intel
Integrated Circuit
EPF6016QC208-2N
Intel
Integrated Circuit
EPF6016ATC144-3N
Intel
Integrated Circuit
EPF10K30ATC144-3N
Intel
Integrated Circuit
EPC2TI32N
Intel
Integrated Circuit
EPC2LC20
Intel
Integrated Circuit
EP3SL150F1152C4N
Intel
Integrated Circuit
EP2SGX60DF780C5N
Intel
Integrated Circuit
EP2SGX60CF780C5N
Intel
Integrated Circuit