BUF634AIDRBT Texas Instruments Integrated Circuit (Small Outline No-lead) In Stock
The BUF634AIDRBT is a high-speed 210MHz unity-gain buffer amplifier from Texas Instruments, delivering 250mA output current with a 36V supply range in an 8-pin SOIC No-Lead package. It features 2µA maximum input bias current and is ideal for driving capacitive loads, cables, and ADC inputs. Available in tape-and-reel from stock worldwide with fast shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline No-lead
- Pin Count
- 9
- Lifecycle
- OBSOLETE
- Datasheet
- BUF634AIDRBT Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 210MHz -3dB bandwidth with 250mA output current capability enabling high-speed signal buffering for ADC inputs, RF test equipment, and wideband amplifier output stages
- Wide ±18V (36V total) supply voltage range with only 2µA input bias current for unity-gain buffering of precision analog signals without loading the source
- Compact 8-pin SOIC No-Lead (S-PDSO-N8) package with e4 moisture sensitivity rating introduced in 2020 for modern high-density PCB assembly
- Negative supply voltage limit of -20V enables flexible dual-supply operation suitable for audio amplifiers and test and measurement analog front ends
Applications
The BUF634AIDRBT is commonly used as an output buffer for precision op-amps and DACs where the op-amp cannot directly drive low-impedance or capacitive loads without oscillation or current limiting. Its 210MHz bandwidth and 250mA drive capability make it ideal for driving coaxial cables, ADC sample-and-hold inputs, and RF signal chain buffers in test and measurement instruments. Additional applications include audio power amplifier driver stages, active filter output buffering, and industrial signal conditioning circuits where high output current and wide bandwidth are simultaneously required.
Specifications
| Date Of Intro | 2020-01-18 |
| YTEOL | 0 |
| Amplifier Type | BUFFER |
| Average Bias Current-Max (IIB) | 2 µA |
| Bandwidth (3dB)-Nom | 210MHz |
| Bias Current-Max (IIB) @25C | 2 µA |
| Input Offset Voltage-Max | 60000 µV |
| JESD-30 Code | S-PDSO-N8 |
| JESD-609 Code | e4 |
| Neg Supply Voltage Limit-Max | -20 V |
| Neg Supply Voltage-Nom (Vsup) | -15 V |
| Number of Functions | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOLCC8,.11,25 |
| Package Shape | SQUARE |
| Package Style | SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE |
| Packing Method | TR |
| Peak Reflow Temperature (Cel) | 260 |
| Slew Rate-Nom | 3750V/us |
| Supply Current-Max | 12mA |
| Supply Voltage Limit-Max | 20V |
| Supply Voltage-Nom (Vsup) | 15V |
| Surface Mount | YES |
| Technology | BICMOS |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | NICKEL PALLADIUM GOLD |
| Terminal Form | NO LEAD |
| Terminal Pitch | 0.65mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Package | Small Outline No-lead |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 2 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.01 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for BUF634AIDRBT:
Frequently Asked Questions
What is the bandwidth and output current of the BUF634AIDRBT?
The BUF634AIDRBT provides a -3dB bandwidth of 210MHz and a maximum output current of 250mA. These specifications allow it to drive demanding loads such as coaxial cables, ADC inputs, and capacitive test fixtures at high frequencies without significant signal degradation or output current limiting.
What is the supply voltage range for the BUF634AIDRBT?
The BUF634AIDRBT supports a total supply voltage of up to 36V (±18V dual supply or 36V single supply), with a negative supply voltage limit of -20V. This wide supply range enables use in precision instrumentation, audio systems, and test equipment where large signal swings and dual-rail power supplies are common.
What package does the BUF634AIDRBT come in?
The BUF634AIDRBT is housed in an 8-pin Small Outline No-Lead (SON/SOIC No-Lead) package with JESD-30 code S-PDSO-N8 and e4 JEDEC moisture sensitivity rating. It is supplied in tape-and-reel (DRBT suffix) format and was introduced in January 2020 as an updated package variant of the BUF634 family.
What is the input offset voltage of the BUF634AIDRBT?
The BUF634AIDRBT has a maximum input offset voltage of 60mV (60,000 µV). As a unity-gain buffer (not a precision amplifier), this offset is acceptable in applications where DC accuracy is less critical than speed and output drive capability, such as cable drivers, ADC input buffers, and wideband signal routing.
What are common alternatives to the BUF634AIDRBT?
Comparable high-speed buffer alternatives include the BUF602 (1GHz, lower output current) and OPA633 (300MHz unity-gain stable buffer). For applications requiring higher output current, the LT1010 or BUF634 in other packages (SOIC-8, TO-99) can be used. Always verify bandwidth, output current, supply voltage, and package compatibility before substituting in an existing design.
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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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