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Número de pieza | OPA2650 | |
Descripción | Dual Wideband / Low Power Voltage Feedback OPERATIONAL AMPLIFIER | |
Fabricantes | Burr-Brown | |
Logotipo | ||
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OPA2650
OPA2650
Dual Wideband, Low Power Voltage Feedback
OPERATIONAL AMPLIFIER
FEATURES
q LOW POWER: 50mW/Chan.
q UNITY GAIN STABLE BANDWIDTH:
360MHz
q FAST SETTLING TIME: 20ns to 0.01%
q LOW HARMONICS: –77dBc at 5MHz
q DIFFERENTIAL GAIN/PHASE ERROR:
0.01%/0.025°
q HIGH OUTPUT CURRENT: 85mA
APPLICATIONS
q HIGH RESOLUTION VIDEO
q BASEBAND AMPLIFIER
q CCD IMAGING AMPLIFIER
q ULTRASOUND SIGNAL PROCESSING
q ADC/DAC GAIN AMPLIFIER
q ACTIVE FILTERS
q HIGH SPEED INTEGRATORS
q DIFFERENTIAL AMPLIFIER
DESCRIPTION
The OPA2650 is a dual, low power, wideband voltage
feedback operational amplifier. It features a high band-
width of 360MHz as well as a 12-bit settling time of
only 20ns. The low distortion allows its use in commu-
nications applications, while the wide bandwidth and
true differential input stage make it suitable for use in
a variety of active filter applications. Its low distortion
gives exceptional performance for telecommunica-
tions, medical imaging and video applications.
The OPA2650 is internally compensated for unity-
gain stability. This amplifier has a fully symmetrical
differential input due to its “classical” operational
amplifier circuit architecture. Its unusual combination
of speed, accuracy and low power make it an outstand-
ing choice for many portable, multi-channel and other
high speed applications, where power is at a premium.
The OPA2650 is also available in single (OPA650)
and quad (OPA4650) configurations.
+VS
Non-Inverting
Input
Inverting
Input
Current
Mirror
Output
Stage
CC
Output
–VS
NOTE: Diagram shows only one-half of the OPA2650.
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
© 1994 Burr-Brown Corporation
PDS-1266C
OPPrAint2ed6in5U0.S.A. June, 1997
®
1 page TYPICAL PERFORMANCE CURVES (CONT)
At TA = +25°C, VS = ±5V, RL = 100Ω, and RFB = 402Ω, unless otherwise noted. RFB = 25Ω for a gain of +1.
RECOMMENDED ISOLATION RESISTANCE
vs CAPACITIVE LOAD
40
30
20
10
0
0
25Ω
OPA2650
RISO
CL 1kΩ
20 40 60 80
Capacitive Load, C (pF)
L
100
200
160
120
80
40
0
–40
–80
–120
–160
–200
SMALL SIGNAL TRANSIENT RESPONSE
(G = +1)
Time (5ns/div)
2.0
1.6
1.2
0.8
0.4
0
–0.4
–0.8
–1.2
–1.6
–2.0
LARGE SIGNAL TRANSIENT RESPONSE
(G = +1)
Time (5ns/div)
6
3
0
–3
–6
–9
1M
CLOSED-LOOP BANDWIDTH (G = +1)
DIP Bandwidth
= 366MHz
SO-8 Bandwidth
= 331MHz
MSOP-8 Bandwidth
= 281MHz
10M
100M
Frequency (Hz)
1G
9
6
3
0
–3
–6
–9
1M
CLOSED-LOOP BANDWIDTH (G = +2)
MSOP-8/SO-8/DIP Bandwidth = 108MHz
10M
100M
Frequency (Hz)
1G
20
17
14
11
8
5
2
1M
CLOSED-LOOP BANDWIDTH (G = +5)
MSOP-8/SO-8/DIP Bandwidth = 31MHz
10M
Frequency (Hz)
100M
®
5 OPA2650
5 Page 0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
1M
G = +1
10M
Frequency (Hz)
100M
400M
FIGURE 6. Channel-to-Channel Crosstalk.
TYPICAL APPLICATION
DEMONSTRATION BOARDS
Demonstration boards are available for each OPA2650 pack-
age style. These boards implement a very low parasitic
layout that will produce the excellent frequency and pulse
responses shown in the Typical Performance Curves. For
each package style, the recommended demonstration boards
are:
DEMONSTRATION BOARD
DEM-OPA265xP
DEM-OPA265xU
DEM-OPA26xxE
PACKAGE
8-Pin DIP
SO-8
MSOP-8
PRODUCT
OPA2650P
OPA2650PB
OPA2650U
OPA2650UB
OPA2650E
Contact your local Burr-Brown sales office or distributor to
order demonstration boards.
402Ω
402Ω
Video
Input
1/2
OPA2650
75Ω
75Ω Transmission Line
75Ω
75Ω
VOUT
FIGURE 7. Low Distortion Video Amplifier.
®
11 OPA2650
11 Page |
Páginas | Total 12 Páginas | |
PDF Descargar | [ Datasheet OPA2650.PDF ] |
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