OPA2681N
Dual Wideband, Current Feedback OPERATIONAL AMPLIFIER With Disable

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Datasheet

Size: 292.51KB
Page: 21
PDF: OPA1013.pdf
  • Description:
    Dual Wideband, Current Feedback OPERATIONAL AMPLIFIER With Disable
  • MFG:
    BURR-BROWN [Burr-Brown Corporation]
 

Abstract


Dual Wideband, Current Feedback
OPERATIONAL AMPLIFIER With Disable
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.
OPA2681
?
FEATURES
l WIDEBAND +5V OPERATION: 225MHz (G = +2)
l UNITY GAIN STABLE: 280MHz (G = 1)
l HIGH OUTPUT CURRENT: 150mA
l OUTPUT VOLTAGE SWING: ±4.0V
l HIGH SLEW RATE: 2100V/?s
l LOW SUPPLY CURRENT: 6mA/ch
l LOW DISABLED CURRENT: 200?A/ch
l ENABLE/DISABLE TIME: 25ns/100ns
APPLICATIONS
l xDSL LINE DRIVER
l MATCHED I/Q CHANNEL AMPLIFIER
l BROADBAND VIDEO BUFFERS
l HIGH SPEED IMAGING CHANNELS
l PORTABLE INSTRUMENTS
l DIFFERENTIAL ADC DRIVERS
l ACTIVE FILTERS
l WIDEBAND INVERTING SUMMING
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 400?A while the
output goes into a high impedance state. This feature may be used
for either power savings or for video MUX applications.
?
1997 Burr-Brown Corporation PDS-1440B Printed in U.S.A. October, 1998
International Airport Industrial Park ? Mailing Address: PO Box 11400, Tucson, AZ 85734 ? Street Address: 6730 S. Tucson Blvd., Tucson, AZ 85706 ? Tel: (520) 746-1111 ? Twx: 910-952-1111
Internet: http://www.burr-brown.com/ ? FAXLine: (800) 548-6133 (US/Canada Only) ? Cable: BBRCORP ? Telex: 066-6491 ? FAX: (520) 889-1510 ? Immediate Product Info: (800) 548-6132
TM
Single Supply ADSL Upstream Driver
100?
2k?
2k? 1?F
12.4?
100?
2Vp-p
324?
324?
1/2
OPA2681
1/2
OPA2681
+12V
1:2
15Vp-p
12.4?
+6.5V
OPA2681 RELATED PRODUCTS
SINGLES DUALS TRIPLES
Voltage Feedback OPA680 OPA2680 OPA3680
Current Feedback OPA681 OPA2681 OPA3681
Fixed Gain OPA682 OPA2682 OPA3682
OPA2681
OPA2681

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