OPA890 Datasheet, PDF (1/32 Pages) Burr-Brown (TI) – Low-Power, Wideband, Voltage-Feedback OPERATIONAL AMPLIFIER with Disable

BurrĆBrown Products
OPA890
from Texas Instruments
OPA890
Low-Power, Wideband, Voltage-Feedback
OPERATIONAL AMPLIFIER with Disable
SBOS369 – MAY 2007
FEATURES
• 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
Multiplying DAC Transimpedance Amplifier
+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
Low-Power Voltage-Feedback
with Disable
Voltage-Feedback Amplifier
with Disable (1800V/µs)
Current-Feedback Amplifier
with Disable (2100V/µs)
Fixed Gain
SINGLES
—
OPA690
OPA691
OPA692
DUALS
OPA2890
OPA2690
OPA2691
—
TRIPLES
—
OPA3690
OPA3691
OPA3692
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.
All trademarks are the property of their respective owners.
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, Texas Instruments Incorporated