OPA3691 Triple Wideband Current Feedback Operational Amplifier with Disable | TI.com

OPA3691 (ACTIVE)

Triple Wideband Current Feedback Operational Amplifier with Disable

 

Recommended alternative parts

  • OPA3692  - The device has SIMILAR FUNCTIONALITY but is not functionally equivalent to the compared device.   Fixed gain of 0 or 6dB.
  • OPA3693  - The device has SIMILAR FUNCTIONALITY but is not functionally equivalent to the compared device.   Fixed gain of 0 or 6dB at lower Bandwidth

Description

The OPA3691 sets a new level of performance for broadband, triple current-feedback op amps. Operating on a very low 5.1mA/ch supply current, the OPA3691 offers a slew rate and output power normally associated with a much higher supply current. A new output stage architecture delivers a high output current with minimal voltage headroom and crossover distortion. This gives exceptional single-supply operation. Using a single +5V supply, the OPA3691 can deliver a 1V to 4V output swing with over 120mA drive current and 150MHz bandwidth. This combination of features makes the OPA3691 an ideal RGB line driver or single-supply Analog-to-Digital Converter (ADC) input driver.

The OPA3691‘s low 5.1mA/ch supply current is precisely trimmed at 25°C. This trim, along with low drift over temperature, ensures lower maximum supply current than competing products. System power may be further reduced by using the optional disable control pin. Leaving this disable pin open, or holding it HIGH, gives normal operation. If pulled LOW, the OPA3691 supply current drops to less than 150µA/ch while the output goes into a high impedance state. This feature may be used for power savings.

Features

  • FLEXIBLE SUPPLY RANGE:
    +5V to +12V Single-Supply
    ±2.5V to ±6V Dual Supply
  • UNITY-GAIN STABLE: 280MHz (G = 1)
  • HIGH OUTPUT CURRENT: 190mA
  • OUTPUT VOLTAGE SWING: ±4.0V
  • HIGH SLEW RATE: 2100V/µs
  • LOW SUPPLY CURRENT: 5.1mA/ch
  • LOW DISABLED CURRENT: 150µA/ch
  • IMPROVED HIGH-FREQUENCY PINOUT
  • WIDEBAND +5V OPERATION: 190MHz (G = +2)
  • APPLICATIONS
    • RGB AMPLIFIERS
    • WIDEBAND INA
    • BROADBAND VIDEO BUFFERS
    • HIGH-SPEED IMAGING CHANNELS
    • PORTABLE INSTRUMENTS
    • ADC BUFFERS
    • ACTIVE FILTERS
    • CABLE DRIVERS

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Parametrics Compare all products in High-speed op amps (GBW>=50MHz)

 
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 1kHz (Typ) (nV/rtHz)
Iq per channel (Typ) (mA)
Vos (Offset Voltage @ 25C) (Max) (mV)
Rail-to-Rail
Features
Rating
Operating Temperature Range (C)
Package Group
Package Size: mm2:W x L (PKG)
CMRR (Typ) (dB)
Input Bias Current (Max) (pA)
Offset Drift (Typ) (uV/C)
GBW (Typ) (MHz)
Output Current (Typ) (mA)
2nd Harmonic (dBc)
3rd Harmonic (dBc)
@ MHz
OPA3691 LMH6702 OPA2695 OPA3695 OPA691 OPA694 OPA695
Bipolar
Current FB    
Bipolar
Current FB    
Bipolar
Current FB    
Bipolar
Current FB    
Bipolar
Current FB    
Bipolar
Current FB    
Bipolar
Current FB    
3     1     2     3     1     1     1    
4     8     3.5     3.5     4     7     5    
12     12     12     12     12     12.6     12    
280     1700     1100     1000     280     1500     1700    
1     1     1     2     1     1     1    
2100     3100     2900     2400     2100     1700     4300    
1.7     1.83     1.8     1.8     1.7     2.1     1.8    
1.7     1.83     1.8     1.8     1.7     2.1     1.8    
5.1     12.5     12.9     12.9     5.1     5.8     12.9    
3     4.5     3.5     3.5     2.5     3     3    
No     No     No     No     No     No     No    
Shutdown     N/A     Small Size
Shutdown    
Shutdown     Shutdown     N/A     Shutdown    
Catalog     Catalog     Catalog     Catalog     Catalog     Catalog     Catalog    
-40 to 85     -40 to 85     -40 to 85     -40 to 85     -40 to 85     -40 to 85     -40 to 85    
SOIC | 16
SSOP | 16    
SOIC | 8
SOT-23 | 5    
SOIC | 8
VQFN | 16    
SSOP | 16