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OPA2681 Datasheet

  • OPA2681

  • SpeedPlus Wideband， Current Feedback Operational

  • 21頁

  • ETC

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廬
OPA
268
1
OPA
2
681
OPA2681
OPA
268
1
Dual Wideband, Current Feedback
OPERATIONAL AMPLIFIER With Disable
TM
FEATURES
q
q
q
q
q
q
q
q
WIDEBAND +5V OPERATION: 225MHz (G = +2)
UNITY GAIN STABLE: 280MHz (G = 1)
HIGH OUTPUT CURRENT: 150mA
OUTPUT VOLTAGE SWING:
鹵
4.0V
HIGH SLEW RATE: 2100V/
碌
s
LOW SUPPLY CURRENT: 6mA/ch
LOW DISABLED CURRENT: 200
碌
A/ch
ENABLE/DISABLE TIME: 25ns/100ns
APPLICATIONS
q
q
q
q
q
q
q
xDSL LINE DRIVER
BROADBAND VIDEO BUFFERS
HIGH SPEED IMAGING CHANNELS
PORTABLE INSTRUMENTS
ADC BUFFERS
ACTIVE FILTERS
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.
50鈩?/div>
Source
1Vp-p
1/2
OPA2681
The OPA2681鈥檚 low 6mA/ch supply current is precisely trimmed
at 25擄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碌A(chǔ) while the
output goes into a high impedance state. This feature may be used
for either power savings or for video MUX applications.
OPA2681 PRODUCT FAMILY
SINGLES
DUALS
OPA2680
OPA2681
Voltage Feedback
Current Feedback
OPA680
OPA681
+5V
R
S
16.5鈩?/div>
1:2
R
F
301鈩?/div>
12.0Vp-p
R
G1
60.4鈩?/div>
R
G2
49.9鈩?/div>
R
S
16.5鈩?/div>
R
L
133鈩?/div>
V
OUT
= 12Vp-p
1/2
OPA2681
鈥?V
R
F
301鈩?/div>
High Power Twisted Pair Driver
International Airport Industrial Park 鈥?Mailing Address: PO Box 11400, Tucson, AZ 85734 鈥?Street Address: 6730 S. Tucson Blvd., Tucson, AZ 85706 鈥?Tel: (520) 746-1111 鈥?Twx: 910-952-1111
Internet: http://www.burr-brown.com/ 鈥?FAXLine: (800) 548-6133 (US/Canada Only) 鈥?Cable: BBRCORP 鈥?Telex: 066-6491 鈥?FAX: (520) 889-1510 鈥?Immediate Product Info: (800) 548-6132
廬
漏
1997 Burr-Brown Corporation
1
PDS-1440A
Printed in U.S.A.
OPA2681
December, 1997

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