Wideband, Voltage Feedback Operational Amplifier With Disable - OPA690

OPA690 (ACTIVE)

Wideband, Voltage Feedback Operational Amplifier With Disable

 

Description

The OPA690 device represents a major step forward in unity-gain stable, voltage-feedback op amps. A new internal architecture provides slew rate and full-power bandwidth previously found only in wideband, current-feedback op amps. A new output stage architecture delivers high currents with a minimal headroom requirement. These combine to give exceptional single-supply operation. Using a single 5-V supply, the OPA690 can deliver a 1-V to 4-V output swing with over 150 mA drive current and 150 MHz bandwidth. This combination of features makes the OPA690 an ideal RGB line driver or single-supply Analog-to-Digital Converter (ADC) input driver.

The low 5.5-mA supply current of the OPA690 is precisely trimmed at 25°C. This trim, along with low temperature drift, gives lower maximum supply current than competing products. System power may be reduced further using the optional disable control pin. Leaving this disable pin open, or holding it HIGH, operates the OPA690 normally. If pulled LOW, the OPA690 supply current drops to less than 100 µA while the output goes to a high-impedance state. This feature may be used for power savings.

Features

  • Flexible Supply Range:
    • 5-V to 12-V Single Supply
    • ±2.5-V to ±5-V Dual Supply
  • Unity-Gain Stable: 500 MHz (G = 1)
  • High Output Current: 190 mA
  • Output Voltage Swing: ±4 V
  • High Slew Rate: 1800 V/µs
  • Low Supply Current: 5.5 mA
  • Low Disable Current: 100 µA
  • Wideband 5-V Operation: 220 MHz (G = 2)
  • APPLICATIONS
    • Video Line Drivers
    • xDSL Line Drivers and Receivers
    • High-Speed Imaging Channels
    • ADC Buffers
    • Portable Instruments
    • Transimpedance Amplifiers
    • Active Filters

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Parametrics Compare all products in High-Speed Op Amps (>=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)
Iq per channel (Typ) (mA)
Vos (Offset Voltage @ 25C) (Max) (mV)
Rail-to-Rail
Additional Features
Rating
Operating Temperature Range (C)
Package Group
Approx. Price (US$)
Package Size (mm2=WxL)
CMRR (Typ) (dB)
IIB (Max) (nA)
Offset Drift (Typ) (uV/C)
GBW (Typ) (MHz)
Output Current (Typ) (mA)
2nd Harmonic (dBc)
3rd Harmonic (dBc)
@ MHz
OPA690
Bipolar
Voltage FB    
1    
5    
12    
500    
1    
1800    
5.5    
5.5    
4    
No    
Shutdown    
Catalog    
-40 to 85    
SOIC
SOT-23    
1.63 | 1ku    
6SOT-23: 8 mm2: 2.8 x 2.9
8SOIC: 29 mm2: 6 x 4.9    
65    
10000    
10    
500    
190    
68    
70    
5    

WEBENCH® Designer OPA690

Amplifier Topology
 Non-inverting
 Inverting
Desired Power Supply Voltage
Positive Supply (Vcc):  V
Negative Supply (Vee):  V
Allowed Power Supply(Vcc-Vee) = 5.0 to 12.0 V
Desired Input and Output Requirements
  Min Max
Vin  V  V
Vout  V  V
Minimum Temperature = -40.0 °C
Maximum Temperature = 85.0 °C