BUF634 250-mA high-speed buffer - see BUF634A for upgraded version | TI.com

BUF634 (ACTIVE) 250-mA high-speed buffer - see BUF634A for upgraded version

250-mA high-speed buffer - see BUF634A for upgraded version - BUF634
Datasheet
 

For higher slew rate (3750 V/µs) and wider bandwidth (210 MHz) at a 40% lower quiescent current (8.5 mA), see  BUF634A.

Description

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 1.5-mA quiescent current with 250-mA output,
2000-V/µs slew rate, and 30-MHz bandwidth. Bandwidth can be adjusted from 30 MHz to 180 MHz by connecting a resistor between V– and the BW Pin.

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

The BUF634 is available in a variety of packages to suit mechanical and power dissipation requirements. Types include 8-pin PDIP, SOIC-8 surface-mount, 5-lead TO-220, and a 5-lead DDPAK-TO-263 surface-mount plastic power package.

The upgraded device, BUF634A offers a wider bandwidth (210 MHz) and a higher slew rate (3750 V/µs) at 40% lower quiescent current. See the Device Comparison Table for a selection of unity-gain, open-loop buffers from Texas Instruments.

Features

  • A newer version of this device is now available: BUF634A
  • High output current: 250 mA
  • Slew rate: 2000 V/µs
  • Pin-selected bandwidth: 30 MHz to 180 MHz
  • Low quiescent current: 1.5 mA (30 MHz BW)
  • Wide supply range: ±2.25 to ±18 V
  • Internal current limit
  • Thermal shutdown protection
  • 8-pin PDIP, SOIC-8, 5-lead TO-220, 5-lead DDPAK-TO-263 surface-mount

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Parametrics

Compare all products in High-speed op amps (GBW>=50MHz) Email Download to Excel
Part number Order Architecture Number of channels (#) Total supply voltage (Min) (+5V=5, +/-5V=10) Total supply voltage (Max) (+5V=5, +/-5V=10) BW @ Acl (MHz) Acl, min spec gain (V/V) Slew rate (Typ) (V/us) Vn at flatband (Typ) (nV/rtHz) Vn at 1 kHz (Typ) (nV/rtHz) Iq per channel (Typ) (mA) Vos (offset voltage @ 25 C) (Max) (mV) Rail-to-rail Features Rating Operating temperature range (C) Package Group Package size: mm2:W x L (PKG) Input bias current (Max) (pA) Offset drift (Typ) (uV/C) GBW (Typ) (MHz) Output current (Typ) (mA) 2nd harmonic (dBc) 3rd harmonic (dBc) @ MHz
BUF634 Order now Bipolar     1     5     36     180     1     2000     4     4     15     100     No       Catalog     -40 to 125     DDPAK/TO-263 | 5
PDIP | 8
SOIC | 8
TO-220 | 5    
5DDPAK/TO-263: 155 mm2: 15.24 x 10.16 (DDPAK/TO-263 | 5)
See datasheet (PDIP)
8SOIC: 19 mm2: 3.91 x 4.9 (SOIC | 8)
See datasheet (TO-220)    
20000000     100     180     250     75     83     1    
BUF602 Order now Current FB     1     2.8     12.6     1000     1     8000     4.8     5.9       30     No       Catalog     -45 to 85     SOIC | 8
SOT-23 | 5    
8SOIC: 19 mm2: 3.91 x 4.9 (SOIC | 8)
5SOT-23: 5 mm2: 1.6 x 2.9 (SOT-23 | 5)    
  125     1000     60     76     98     5    
BUF634A Order now Bipolar     1     4.5     36     210     1     3750     3.4     3.4     8.5     60     No    
   
Catalog     -40 to 125     SOIC | 8     8SOIC: 19 mm2: 3.91 x 4.9 (SOIC | 8)     1600000       240     250     -77     -79     0.02