XTHS3491IDDAR Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
The XTHS3491IDDAR is a Texas Instruments 900 MHz high-power-output current feedback operational amplifier with 75 dB typical CMRR and 2 mV maximum input offset voltage. It integrates frequency compensation and ships in an 8-pin SOIC (R-PDSO-G8) package for compact RF and wideband signal chain designs. Available worldwide with in-stock inventory for rapid prototyping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 9
- Lifecycle
- OBSOLETE
- Datasheet
- XTHS3491IDDAR Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 900 MHz gain-bandwidth current feedback architecture for wideband signal amplification up to RF frequencies
- 75 dB typical common-mode rejection ratio (CMRR) with 2000 µV maximum input offset voltage in an 8-pin SOIC
- Integrated frequency compensation simplifies board design by eliminating external compensation networks
Applications
The XTHS3491IDDAR is designed for high-speed signal conditioning in RF signal chains, video distribution amplifiers, and wideband ADC driver stages where gain must be maintained up to 900 MHz. Its current feedback architecture provides flat gain response across a wide bandwidth, making it suitable for cable TV line amplifiers, radar IF stages, and test-and-measurement instrument front ends. The 8-pin SOIC package keeps the PCB footprint small while delivering high output power drive capability.
Specifications
| Date Of Intro | 2017-09-09 |
| YTEOL | 0 |
| Amplifier Type | OPERATIONAL AMPLIFIER |
| Architecture | VOLTAGE-FEEDBACK |
| Common-mode Reject Ratio-Min | 69dB |
| Common-mode Reject Ratio-Nom | 75dB |
| Frequency Compensation | YES |
| Input Offset Voltage-Max | 2000 µV |
| JESD-30 Code | R-PDSO-G8 |
| Low-Bias | NO |
| Low-Offset | NO |
| Micropower | NO |
| Neg Supply Voltage Limit-Max | -16.5 V |
| Neg Supply Voltage-Nom (Vsup) | -15 V |
| Number of Functions | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, HEAT SINK/SLUG, LOW PROFILE |
| Packing Method | TR |
| Power | NO |
| Programmable Power | NO |
| Slew Rate-Nom | 8000V/us |
| Supply Current-Max | 16.4mA |
| Supply Voltage Limit-Max | 16.5V |
| Supply Voltage-Nom (Vsup) | 15V |
| Surface Mount | YES |
| Technology | BICMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Wideband | NO |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.33.00.01 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for XTHS3491IDDAR:
Amplifier, 1 Func, 2000uV Offset-Max, 800MHz Band Width, BICMOS, PDSO8
Amplifier, 1 Func, 2000uV Offset-Max, 800MHz Band Width, BICMOS, PDSO8
Frequently Asked Questions
What bandwidth and CMRR does the XTHS3491IDDAR provide for wideband signal chain designs?
The XTHS3491IDDAR achieves a 900 MHz bandwidth with a current feedback architecture and provides a typical common-mode rejection ratio (CMRR) of 75 dB, with a minimum of 69 dB. This combination makes it suitable for wideband differential signal conditioning in ADC driver and cable amplifier applications where both high frequency response and common-mode noise rejection are critical.
How does the current feedback architecture of the XTHS3491IDDAR compare to a voltage feedback op-amp at 100 MHz?
A current feedback amplifier like the XTHS3491IDDAR maintains nearly constant bandwidth regardless of closed-loop gain setting, whereas a voltage feedback op-amp loses bandwidth proportionally as gain increases due to the gain-bandwidth product limit. At a closed-loop gain of 10 dB, the XTHS3491IDDAR continues to deliver useful bandwidth toward 900 MHz, while a comparable 300 MHz voltage feedback op-amp would roll off by approximately 100 MHz at the same gain — an important distinction for multi-stage RF chain designs.
Which PCB layout practices minimize noise in designs using the XTHS3491IDDAR at frequencies above 100 MHz?
For the XTHS3491IDDAR in wideband layouts above 100 MHz, decoupling capacitors of 100 nF ceramic and 10 µF bulk should be placed within 2 mm of each supply pin to suppress power supply noise. The 8-pin SOIC R-PDSO-G8 package should be oriented so feedback resistors are as close as possible to the inverting input, with ground planes on adjacent layers to minimize parasitic inductance. Microstrip trace impedance should be held at 50 Ω from the input source to the amplifier pin to prevent reflections at signal frequencies near 900 MHz.
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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.
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