Home Amplifiers Operational amplifiers (op amps) High-speed op amps (GBW ≥ 50 MHz)
Home
Amplifiers
Operational amplifiers (op amps)
High-speed op amps (GBW ≥ 50 MHz)

BUF634

NOT RECOMMENDED FOR NEW DESIGNS

250-mA high-speed buffer - see BUF634A for upgraded version

Order now
Data sheet
BUF634 is not recommended for new designs
This product continues to be available for existing customers. New designs should consider an alternate product.
open-in-new Compare alternates
Drop-in replacement with upgraded functionality to the compared device
BUF634A ACTIVE 210-MHz, 250-mA high-speed buffer BUF634A has higher slew rate (3750 V/µs) and wider bandwidth (210 MHz) at a 40% lower quiescent current (8.5 mA) and is available at a lower cost

BUF634

NOT RECOMMENDED FOR NEW DESIGNS
Data sheet Order now

Product details

Architecture Fixed Gain/Buffer Number of channels 1 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 5 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 36 GBW (typ) (MHz) 180 BW at Acl (MHz) 180 Acl, min spec gain (V/V) 1 Slew rate (typ) (V/µs) 2000 Vn at flatband (typ) (nV√Hz) 4 Vn at 1 kHz (typ) (nV√Hz) 4 Iq per channel (typ) (mA) 15 Vos (offset voltage at 25°C) (max) (mV) 100 Rail-to-rail No Features Adjustable BW/IQ/IOUT Rating Catalog Operating temperature range (°C) -40 to 125 Input bias current (max) (pA) 20000000 Offset drift (typ) (µV/°C) 100 Iout (typ) (mA) 250 2nd harmonic (dBc) 75 3rd harmonic (dBc) 83 Frequency of harmonic distortion measurement (MHz) 1
Architecture Fixed Gain/Buffer Number of channels 1 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 5 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 36 GBW (typ) (MHz) 180 BW at Acl (MHz) 180 Acl, min spec gain (V/V) 1 Slew rate (typ) (V/µs) 2000 Vn at flatband (typ) (nV√Hz) 4 Vn at 1 kHz (typ) (nV√Hz) 4 Iq per channel (typ) (mA) 15 Vos (offset voltage at 25°C) (max) (mV) 100 Rail-to-rail No Features Adjustable BW/IQ/IOUT Rating Catalog Operating temperature range (°C) -40 to 125 Input bias current (max) (pA) 20000000 Offset drift (typ) (µV/°C) 100 Iout (typ) (mA) 250 2nd harmonic (dBc) 75 3rd harmonic (dBc) 83 Frequency of harmonic distortion measurement (MHz) 1
SOIC (D) 8 29.4 mm² 4.9 x 6 TO-220 (KC) 5 45.212 mm² 10.16 x 4.45 TO-263 (KTT) 5 154.8384 mm² 10.16 x 15.24
  • A newer version of this device is now available: BUF634A
  • High output current: 250mA
  • Slew rate: 2000V/µs
  • Pin-selected bandwidth: 30MHz to 180MHz
  • Low quiescent current: 1.5mA (30MHz BW)
  • Wide supply range: ±2.25V to ±18V
  • Internal current limit
  • Thermal shutdown protection
  • Packages:
    • 5-pin SOIC
    • 5-pin TO-220
    • 5-pin TO-263 surface-mount
  • A newer version of this device is now available: BUF634A
  • High output current: 250mA
  • Slew rate: 2000V/µs
  • Pin-selected bandwidth: 30MHz to 180MHz
  • Low quiescent current: 1.5mA (30MHz BW)
  • Wide supply range: ±2.25V to ±18V
  • Internal current limit
  • Thermal shutdown protection
  • Packages:
    • 5-pin SOIC
    • 5-pin TO-220
    • 5-pin TO-263 surface-mount

The BUF634 is a high-speed, unity-gain, open-loop buffer recommended for a wide range of applications. The BUF634 can be used inside the feedback loop of op amps to increase output current, eliminate thermal feedback, and improve capacitive load drive.

For low-power applications, the BUF634 operates on 1.5mA quiescent current with 250mA output, 2000V/µs slew rate, and 30MHz bandwidth. Bandwidth can be adjusted from 30MHz to 180MHz by connecting a resistor between V– and the BW pin.

Output circuitry is fully protected by internal current limit and thermal shutdown, making the device rugged and easy to use.

The BUF634 is available in a variety of packages to meet mechanical and power-dissipation requirements. Types include SOIC‑8 surface-mount, 5‑lead TO‑220, and a 5‑lead TO‑263 (DDPAK) surface-mount plastic power packages.

The BUF634 is a high-speed, unity-gain, open-loop buffer recommended for a wide range of applications. The BUF634 can be used inside the feedback loop of op amps to increase output current, eliminate thermal feedback, and improve capacitive load drive.

For low-power applications, the BUF634 operates on 1.5mA quiescent current with 250mA output, 2000V/µs slew rate, and 30MHz bandwidth. Bandwidth can be adjusted from 30MHz to 180MHz by connecting a resistor between V– and the BW pin.

Output circuitry is fully protected by internal current limit and thermal shutdown, making the device rugged and easy to use.

The BUF634 is available in a variety of packages to meet mechanical and power-dissipation requirements. Types include SOIC‑8 surface-mount, 5‑lead TO‑220, and a 5‑lead TO‑263 (DDPAK) surface-mount plastic power packages.
filter Find other High-speed op amps (GBW ≥ 50 MHz)
Download

Technical documentation

star =Top documentation for this product selected by TI
No results found. Please clear your search and try again.
View all 1
Type Title Date
* Data sheet BUF634 250mA High-Speed Buffer datasheet (Rev. C) PDF | HTML 01 Mar 2024

Ordering & quality

Information included:
  • RoHS
  • REACH
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring
Information included:
  • Fab location
  • Assembly location