OPA2681 Datasheet, PDF (1/21 Pages) Burr-Brown (TI) – Dual Wideband, Current Feedback OPERATIONAL AMPLIFIER With Disable

®
OPA2681
OPA2681
OPA2681
TM _{Dual Wideband, Current Feedback}
OPERATIONAL AMPLIFIER With Disable
FEATURES
q WIDEBAND +5V OPERATION: 225MHz (G = +2)
q UNITY GAIN STABLE: 280MHz (G = 1)
q HIGH OUTPUT CURRENT: 150mA
q OUTPUT VOLTAGE SWING: ±4.0V
q HIGH SLEW RATE: 2100V/µs
q LOW SUPPLY CURRENT: 6mA/ch
q LOW DISABLED CURRENT: 200µA/ch
q ENABLE/DISABLE TIME: 25ns/100ns
APPLICATIONS
q xDSL LINE DRIVER
q MATCHED I/Q CHANNEL AMPLIFIER
q BROADBAND VIDEO BUFFERS
q HIGH SPEED IMAGING CHANNELS
q PORTABLE INSTRUMENTS
q DIFFERENTIAL ADC DRIVERS
q ACTIVE FILTERS
q WIDEBAND INVERTING SUMMING
DESCRIPTION
The OPA2681 sets a new level of performance for broadband dual
current feedback op amps. Operating on a very low 6mA/ch
supply current, the OPA2681 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 OPA2681 can deliver a 1V to 4V output swing with over
100mA drive current and 150MHz bandwidth. This combination
of features makes the OPA2681 an ideal RGB line driver or single
supply ADC input driver.
+12V
1/2
OPA2681
The OPA2681’s low 6mA/ch supply current is precisely trimmed
at 25°C. This trim, along with low drift over temperature, guaran-
tees lower guaranteed maximum supply current than competing
products. System power may be further reduced by using the
optional disable control pin (SO-14 only). Leaving this disable
pin open, or holding it high, gives normal operation. If pulled low,
the OPA2681 supply current drops to less than 400µA while the
output goes into a high impedance state. This feature may be used
for either power savings or for video MUX applications.
OPA2681 RELATED PRODUCTS
Voltage Feedback
Current Feedback
Fixed Gain
SINGLES
OPA680
OPA681
OPA682
DUALS
OPA2680
OPA2681
OPA2682
TRIPLES
OPA3680
OPA3681
OPA3682
324Ω
12.4Ω _1:2
+6.5V
2kΩ
1µF
2Vp-p
100Ω
2kΩ
324Ω
12.4Ω
100Ω _15Vp-p
1/2
OPA2681
Single Supply ADSL Upstream Driver
International Airport Industrial Park • Mailing Address: PO Box 11400, Tucson, AZ 85734 • Street Address: 6730 S. Tucson Blvd., Tucson, AZ 85706 • Tel: [phone] • Twx: 910-952-1111
Internet: http://www.burr-brown.com/ • FAXLine: [phone] (US/Canada Only) • Cable: BBRCORP • Telex: 066-6491 • FAX: [phone] • Immediate Product Info: [phone]
©_{1997 Burr-Brown Corporation}
PDS-1440B
Printed in U.S.A. October, 1998