OPA2743EA Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
The OPA2743EA is a dual, rail-to-rail output operational amplifier with 7 MHz gain-bandwidth product operating from 2.7 V to 9 V single or ±4.5 V dual supply. Housed in a compact 8-pin VSSOP package from Texas Instruments, it suits portable and battery-powered signal conditioning designs.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- OPA2743EA Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of OPA2743EA?
- 7 MHz gain-bandwidth product enables accurate signal amplification in audio and sensor conditioning circuits up to several MHz
- Wide 2.7 V to 9 V supply range supports 3.3 V, 5 V, and dual ±4.5 V systems from a single device
- Rail-to-rail output swing maximizes dynamic range in single-supply low-voltage applications
- Dual amplifier in one 8-pin VSSOP package reduces component count and board area by 50% versus discrete solutions
- Low supply current per amplifier extends battery life in portable IoT and wearable sensing designs
What is OPA2743EA used for?
The OPA2743EA is ideal for portable instrumentation, handheld test equipment, and battery-powered sensor interfaces where low supply voltage of 2.7 V to 5 V and dual-channel signal conditioning are required in a minimal footprint. Its 7 MHz bandwidth and rail-to-rail output make it well suited for active filter stages, transimpedance amplifiers for photodiodes, and single-supply audio signal chains in consumer electronics. The device is also used in data acquisition front ends driving 12-bit to 16-bit ADCs in industrial sensing modules.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Where can I find the OPA2743EA datasheet?
OPA2743EA Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for OPA2743EA?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the gain-bandwidth product of the OPA2743EA and how does it affect amplifier design?
The OPA2743EA has a gain-bandwidth product of 7 MHz, meaning at a closed-loop gain of 10 V/V the usable signal bandwidth is approximately 700 kHz, and at unity gain the bandwidth extends to 7 MHz. This makes it suitable for audio signal chains, active filters up to 1 MHz, and sensor amplifiers needing moderate bandwidth from a 2.7 V to 9 V supply.
Which supply voltage configurations does the OPA2743EA support?
The OPA2743EA operates from a single supply of 2.7 V to 9 V or from a split supply of ±1.35 V to ±4.5 V, covering 3.3 V, 5 V, and dual ±2.5 V system rails commonly used in embedded and portable designs. This flexibility allows the same device to be used across different board revisions without component changes.
How does the 8-pin VSSOP package of the OPA2743EA help in space-constrained PCB layouts?
The VSSOP-8 package measures approximately 3 mm × 3 mm with a 0.5 mm lead pitch, providing a roughly 40% smaller footprint than an equivalent SO-8 package while still accommodating both amplifier channels. This compact size is particularly advantageous in wearable devices, handheld instruments, and multi-channel signal conditioning boards where PCB area is at a premium.
For a 12-bit ADC front end running on a 3.3 V rail, does the OPA2743EA provide sufficient dynamic range?
Yes, with rail-to-rail output operation on a 3.3 V single supply, the OPA2743EA can swing to within millivolts of both rails, delivering a usable output swing of approximately 3.2 V. This maximizes the input range of a 12-bit ADC with 3.3 V reference, achieving up to 72 dB theoretical dynamic range while minimizing the signal-to-noise ratio lost to headroom limitations.
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