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PDF OPA2684 Data sheet ( Hoja de datos )
| Número de pieza | OPA2684 | |
| Descripción | Quad / Low-Power / Current-Feedback OPERATIONAL AMPLIFIER | |
| Fabricantes | Burr-Brown | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de OPA2684 (archivo pdf) en la parte inferior de esta página. Total 28 Páginas | ||
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OPA2684
OPA2684
SBOS239B – APRIL 2002 – REVISED NOVEMBER 2002
Low-Power, Dual Current-Feedback
OPERATIONAL AMPLIFIER
FEATURES
q MINIMAL BANDWIDTH CHANGE VERSUS GAIN
q 170MHz BANDWIDTH AT G = +2
q > 120MHz BANDWIDTH TO GAIN > +10
q LOW DISTORTION: < –82dBc at 5MHz
q HIGH OUTPUT CURRENT: 120mA
q SINGLE +5V TO +12V SUPPLY OPERATION
q DUAL ±2.5 TO ±6.0V SUPPLY OPERATION
q LOW SUPPLY CURRENT: 3.4mA Total
APPLICATIONS
q SHORT-LOOP ADSL CO DRIVER
q LOW-POWER BROADCAST VIDEO DRIVERS
q DIFFERENTIAL EQUALIZING FILTERS
q DIFFERENTIAL SAW FILTER POST AMPLIFIER
q MULTICHANNEL SUMMING AMPLIFIERS
q PROFESSIONAL CAMERAS
q ADC INPUT DRIVERS
DESCRIPTION
freedom from amplifier bandwidth interaction. This allows
frequency response peaking elements to be added, multiple
The OPA2684 provides a new level of performance in low-
input inverting summing circuits to have greater bandwidth,
power, wideband, current-feedback (CFB) amplifiers. This
and low-power line drivers to meet the demanding require-
CFBPLUS amplifier is among the first to use an internally
ments of studio cameras and broadcast video.
csraCvelierFogtcrasnBhyieiinfltdioeaicn-wcmalgotnupaottrllnhpieyfdeieiponlrbir.vnpeoeeuTnvratiehdrfeebieiztaussecrfdfllomieoefirsmraevnspeldotyear-wyldgoo-aeolfponpotwtchhweieanpeptporbauweeCttnnehFhseratBafoaittnpgstcaheeemeorsafbipntuailpovifDfefenimeerar,frrtoostitnahrgr.emgiSisvWaiihendnnhsepeecieulawaeettl4U.coTiDalmnomlhesaeeplodnivestoeehr.ufrdaToitnsprhmgbuistythaamcenfaaucinopelliuasm±ftbi4ompaiVlruliitltpoyalo-urcopwtupf1-sruptrw.he2toeinVhwntegOeatirooPn,dnpArcsou±2uuot56rpmrV8spe4tonsraertuag-tqpfleesu>poeilrihd±eeseb3mseaaV,tedsctphnrk-aoetpoainOsmmienPcwtpoAoglmi2mfii5v6peai08nlrerΩs4gDk-. ataShee
to sense the feedback error current. This improved inverting
input impedance retains exceptional bandwidth to much
exceptional capability for single +5V operation.
higher gains and improves harmonic distortion over earlier
The OPA2684’s low 3.4mA supply current is precisely trimmed
solutions limited by inverting input linearity. Beyond simple
at +25°C. This trim, along with low shift over temperature and
high-gain applications, the OPA2684 CFBPLUS amplifier per-
mits the gain setting element to be set with considerable
supply voltage, gives a very robust design over a wide range
of operating conditions.
V+ 1 of 2 Channels
+
VO
V–
IERR
Z(S) IERR
RF
RG
Low-Power
Amplifier
Patent Pending
6
3
0
–3
–6
–9
–12
–15
–18
–21
–24 RF = 800Ω
10
BW (MHz) vs GAIN
G=1
G=2
G=5
G = 10
G = 20
G = 50
G = 100
MHz
100
200
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.
DataSheet4U.com
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
DataSheet4 U .com
www.ti.com
Copyright © 2002, Texas Instruments Incorporated
1 page  
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TYPICAL CHARACTERISTICS: VS = ±5V
At TA = +25°C, G = +2, RF = 800Ω, and RL = 100Ω, unless otherwise noted.
NONINVERTING SMALL-SIGNAL
FREQUENCY RESPONSE
6
VO = 0.5Vp-p
3 RF = 800Ω
0
G=1
G=2
–3
–6
–9
–12
–15
–18
1
See Figure 1
G=5
G = 10
G = 20
G = 50
G = 100
10
Frequency (MHz)
100 200
INVERTING SMALL-SIGNAL FREQUENCY RESPONSE
3
VO = 0.5Vp-p
RF = 800Ω
0
–3
–6
–9
See Figure 2
–12
1
G = –1
G = –2
G = –5
G = –10
G = –16
10
Frequency (MHz)
100 200
et4U.com
NONINVERTING LARGE-SIGNAL
FREQUENCY RESPONSE
9
G = +2
RL = 100Ω
VO = 0.5Vp-p
6
INVERTING LARGE-SIGNAL FREQUENCY RESPONSE
3
G = –1
RL = 100Ω
0
VO = 0.5Vp-p
1Vp-p
3
0
See Figure 1
–3
1
VO = 1Vp-p
–3
DataSheet4U.com
VO = 2Vp-p
VO = 5Vp-p
–6
–9
10
Frequency (MHz)
100 200
See Figure 2
–12
1
2Vp-p
5Vp-p
DataShee
10
Frequency (MHz)
100 200
NONINVERTING PULSE RESPONSE
0.8
G = +2
0.6
0.4
Large-Signal Right Scale
0.2
Small-Signal Left Scale
0
–0.2
–0.4
–0.6
See Figure 1
–0.8
Time (10ns/div)
1.6
1.2
0.8
0.4
0
–0.4
–0.8
–1.2
–1.6
INVERTING PULSE RESPONSE
0.8
G = –1
0.6
0.4
0.2
0
Small-Signal Left Scale
–0.2
–0.4 Large-Signal Right Scale
–0.6
See Figure 2
–0.8
Time (10ns/div)
1.6
1.2
0.8
0.4
0
–0.4
–0.8
–1.2
–1.6
DataSheet4U.com
OPA2684
SBOS239B
DataSheet4 U .com
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5
5 Page 
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TYPICAL CHARACTERISTICS: VS = +5V
At TA = +25°C, VS = 5V, G = +2, RF = 1.0kΩ, and RL = 100Ω, unless otherwise noted.
NONINVERTING SMALL-SIGNAL
FREQUENCY RESPONSE
6
RF = 1kΩ
3
G = 100
G = 50
0
–3
G=1
G=2
–6
G = 20
–9
G = 10
–12
–15
See Figure 3
–18
1
G=5
10
Frequency (MHz)
100 200
INVERTING SMALL-SIGNAL FREQUENCY RESPONSE
3
RF = 1.0kΩ
0
–3
–6
–9
See Figure 4
–12
1
G = –1
G = –2
G = –5
G = –10
G = –20
10
Frequency (MHz)
100 200
et4U.com
9
6
3
0
–3
1
NONINVERTING LARGE-SIGNAL
FREQUENCY RESPONSE
0.2Vp-p
0.5Vp-p
INVERTING LARGE-SIGNAL FREQUENCY RESPONSE
3
VO = 0.2Vp-p
VO = 0.5Vp-p
0
1Vp-p
–3
2Vp-p
DataSheet4U.com –6
VO = 1Vp-p
VO = 2Vp-p
DataShee
–9
10
Frequency (MHz)
100 200
–12
1
10
Frequency (MHz)
100 200
0.4
0.3
0.2
0.1
0
–0.1
–0.2
–0.3
–0.4
NONINVERTING PULSE RESPONSE
Large-Signal Right Scale
Small-Signal Left Scale
See Figure 3
Time (10ns/div)
1.6
1.2
0.8
0.4
0
–0.4
–0.8
–1.2
–1.6
0.4
0.3
0.2
0.1
0
–0.1
–0.2
–0.3
–0.4
INVERTING PULSE RESPONSE
Small-Signal Left Scale
Large-Signal Right Scale
See Figure 4
Time (10ns/div)
1.6
1.2
0.8
0.4
0
–0.4
–0.8
–1.2
–1.6
DataSheet4U.com
OPA2684
SBOS239B
DataSheet4 U .com
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11
11 Page | ||
| Páginas | Total 28 Páginas | |
| PDF Descargar | [ Datasheet OPA2684.PDF ] | |
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