OPA690 Datasheet, PDF (1/24 Pages) Texas Instruments – Wideband, Voltage Feedback OPERATIONAL AMPLIFIER With Disable

OPA690
OPA690
OPA690
SBOS223A—DECEMBER 2001 – REVISED JULY 2002
Wideband, Voltage Feedback
OPERATIONAL AMPLIFIER With Disable
FEATURES
q FLEXIBLE SUPPLY RANGE:
+5V to +12V Single Supply
±2.5V to ±5V Dual Supply
q UNITY-GAIN STABLE: 500MHz (G = 1)
q HIGH OUTPUT CURRENT: 190mA
q OUTPUT VOLTAGE SWING: ±4.0V
q HIGH SLEW RATE: 1800V/µs
q LOW SUPPLY CURRENT: 5.5mA
q LOW DISABLED CURRENT: 100µA
q WIDEBAND +5V OPERATION: 220MHz (G = 2)
APPLICATIONS
q VIDEO LINE DRIVER
q xDSL LINE DRIVER/RECEIVER
q HIGH SPEED IMAGING CHANNELS
q ADC BUFFERS
q PORTABLE INSTRUMENTS
q TRANSIMPEDANCE AMPLIFIERS
q ACTIVE FILTERS
q OPA680 UPGRADE
DESCRIPTION
The OPA690 represents a major step forward in unity-gain
stable, voltage feedback op amps. A new internal architec-
ture 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 +5V
supply, the OPA690 can deliver a 1V to 4V output swing
with over 150mA drive current and 150MHz bandwidth.
This combination of features makes the OPA690 an ideal
RGB line driver or single-supply Analog-to-Digital Con-
verter (ADC) input driver.
+5V
R₁
R₁
2.5V
0.1µF
3
8
C₂
C₁
R₂
V_I
OPA690
2
4
R₃
C₄
10µF
C₅
0.1µF
The OPA690’s low 5.5mA supply current 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, will operate the OPA690 normally. If pulled LOW,
the OPA690 supply current drops to less than 100µA while
the output goes to a high impedance state. This feature may
be used for power savings.
OPA690 RELATED PRODUCTS
Voltage Feedback
Current Feedback
Fixed Gain
SINGLES
OPA680
OPA691
OPA692
DUALS
OPA2690
OPA2691
OPA2682
3.3V
R₄
20Ω
THS1040
AIN+
C₃
R₅
20Ω
20pF
10-Bit
40MSPS
AIN–
C₆
20pF
V_REF = 1V
TRIPLES
OPA3690
OPA3691
OPA3692
Single-Supply ADC Driver
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
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Copyright © 2001, Texas Instruments Incorporated