OPA890 Datasheet, PDF (1/34 Pages) Burr-Brown (TI) – Low-Power, Wideband, Voltage-Feedback OPERATIONAL AMPLIFIER with Disable

OPA890
www.ti.com
SBOS369B – MAY 2007 – REVISED DECEMBER 2009
Low-Power, Wideband, Voltage-Feedback
OPERATIONAL AMPLIFIER with Disable
Check for Samples: OPA890
FEATURES
1
•2 FLEXIBLE SUPPLY RANGE:
+3V to +12V Single Supply
±1.5V to ±6V Dual Supplies
• UNITY-GAIN STABLE
• WIDEBAND +5V OPERATION: 115MHz
(G = +2V/V)
• OUTPUT VOLTAGE SWING: ±4V
• HIGH SLEW RATE: 500V/μs
• LOW QUIESCENT CURRENT: 1.1mA
• LOW DISABLE CURRENT: 30μA
APPLICATIONS
• VIDEO LINE DRIVING
• xDSL LINE DRIVERS/RECEIVERS
• HIGH-SPEED IMAGING CHANNELS
• ADC BUFFERS
• PORTABLE INSTRUMENTS
• TRANSIMPEDANCE AMPLIFIERS
• ACTIVE FILTERS
+5V
DB0
DB1
DB2
DB3
DB4
DB5
DB6
DB7
DB8
DB9
DB10
DB11
V_DD
GND
½
DAC7822
V_REF
R₁
R_FB
I_OUT1
I_OUT2
R₂
R_{2_3}
R₃
-5V
2.5pF
+7.5V
5.56kW
OPA890
V_OUT
0V £ V_OUT £ 5V
0.1mF ^-2.5V
DESCRIPTION
The OPA890 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. These capabilities provide
exceptional full power bandwidth. Using a single +5V
supply, the OPA890 can deliver a 1V to 4V output
swing with over 35mA drive current and 220MHz
bandwidth. This combination of features makes the
OPA890 an ideal RGB line driver or single-supply
analog-to-digital converter (ADC) input driver.
The low 1.1mA supply current of the OPA890 is
precisely trimmed at +25°C. This trim, along with low
temperature drift, ensures 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 OPA890 normally. If pulled LOW, the
OPA890 supply current drops to less than 30μA while
the output goes into a high-impedance state.
RELATED OPERATIONAL AMPLIFIER PRODUCTS
DESCRIPTION
SINGLES DUALS
TRIPLES
Low-Power Voltage-Feedback
with Disable
—
OPA2890
—
Voltage-Feedback Amplifier
with Disable (1800V/μs)
OPA690 OPA2690 OPA3690
Current-Feedback Amplifier
with Disable (2100V/μs)
OPA691 OPA2691 OPA3691
Fixed Gain
OPA692
—
OPA3692
Multiplying DAC Transimpedance Amplifier
1
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Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
All trademarks are the property of their respective owners.
2
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2007–2009, Texas Instruments Incorporated