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PDF HA-2541 Data sheet ( Hoja de datos )
| Número de pieza | HA-2541 | |
| Descripción | 40MHz/ Fast Settling/ Unity Gain Stable/ Operational Amplifier | |
| Fabricantes | Intersil Corporation | |
| Logotipo |  |
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Data Sheet
40MHz, Fast Settling, Unity Gain Stable,
Operational Amplifier
The HA-2541 is the first unity gain stable monolithic
operational amplifier to achieve 40MHz unity gain
bandwidth. A major addition to the Intersil series of high
speed, wideband op amps, the HA-2541 is designed for
video and pulse applications requiring stable amplifier
response at low closed loop gains.
The uniqueness of the HA-2541 is that its slew rate and
bandwidth characteristics are specified at unity gain.
Historically, high slew rate, wide bandwidth and unity gain
stability have been incompatible features for a monolithic
operational amplifier. But features such as 250V/µs slew rate
and 40MHz unity gain bandwidth clearly show that this is not
the case for the HA-2541. These features, along with 90ns
settling time to 0.1%, make this product an excellent choice
for high speed data acquisition systems.
MIL-STD-883 product and data sheets are available upon
request, Intersil AnswerFAX (407-724-7800) document
#3698.
For further application suggestions on the HA-2541, please
refer to Application Note AN550 (Using the HA-2541), and
Application Note AN556 (Thermal Safe Operating Areas for
High Current Operational Amplifiers), Intersil AnswerFAX
(407-724-7800) document #9550 and 9556. Also see
‘Applications’ in this data sheet.
For a lower power version of this product, please see
the HA-2841 data sheet.
HA-2541
September 1998 File Number 2898.3
Features
• Unity Gain Bandwidth. . . . . . . . . . . . . . . . . . . . . . . 40MHz
• High Slew Rate. . . . . . . . . . . . . . . . . . . . . . . . . . . 250V/µs
• Low Offset Voltage . . . . . . . . . . . . . . . . . . . . . . . . . 0.8mV
• Fast Settling Time (0.1%) . . . . . . . . . . . . . . . . . . . . . 90ns
• Power Bandwidth . . . . . . . . . . . . . . . . . . . . . . . . . . . 4MHz
• Output Voltage Swing (Min) . . . . . . . . . . . . . . . . . . . ±10V
• Unity Gain Stability
• Monolithic Bipolar Dielectric Isolation Construction
Applications
• Pulse and Video Amplifiers
• Wideband Amplifiers
• High Speed Sample-Hold Circuits
• Fast, Precise D/A Converters
• High Speed A/D Input Buffer
Ordering Information
PART
NUMBER
TEMP.
RANGE (oC)
PACKAGE
HA1-2541-5
0 to 75 14 Ld CERDIP
PKG. NO.
F14.3
Pinout
HA1-2541
(CERDIP)
TOP VIEW
NC 1
NC 2
BAL 3
-IN 4
+IN 5
V- 6
NC 7
-
+
14 NC
13 NC
12 BAL
11 V+
10 OUT
9 NC
8 NC
1 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143 | Copyright © Intersil Corporation 1999
1 page  
HA-2541
Typical Applications (Also see Application Note AN550)
Application 1
High power amplifiers and buffers are in use in a wide variety
of applications. Many times the “high power” capability is
needed to drive large capacitive loads as well as low value
resistive loads. In both cases the final driver stage is usually a
power transistor of some type, but because of their inherently
low gain, several stages of pre-drivers are often required. The
HA-2541, with its 10mA output rating, is powerful enough to
drive a power transistor without additional stages of current
amplification. This capability is well demonstrated with the
high power buffer circuit in Figure 3.
The HA-2541 acts as the pre-driver to the output power
transistor. Together, they form a unity gain buffer with the
ability to drive three 50Ω coaxial cables in parallel, each with
a capacitance of 2000pF. The total combined load is 16.6Ω
and 6000pF capacitance.
Application 2
VIDEO
One of the primary uses of the HA-2541 is in the area of
video applications. These applications include signal
construction, synchronization addition and removal, as well
as signal modification. A wide bandwidth device such as the
HA-2541 is well suited for use in this class of amplifier. This,
however, is a more involved group of applications than
ordinary amplifier applications since video signals contain
precise DC levels which must be retained.
The addition of a clamping circuit restores DC levels at the
output of an amplifier stage. The circuit shown in Figure 4
utilizes the HA-5320 sample and hold amplifier as the DC
clamp. Also shown is a 3.57MHz trap in series, which will
block the color burst portion of the video signal and allow the
DC level to be amplified and restored.
50Ω
R1
D3
+
HA-2541
-
R3
100Ω
532pF
R2
1kΩ D1
HP2835
2N5886
HP2835
D2
LOAD 16.6Ω; 6000pF
OR 12.5Ω; 6000pF
3.57MHz
TRAP
1kΩ
75Ω
1kΩ
1kΩ
HA-2541
1kΩ
1kΩ
FIGURE 3. DRIVING POWER TRANSISTORS TO GAIN
ADDITIONAL CURRENT BOOSTING
FIGURE 4. VIDEO DC RESTORER
Suggested Offset Voltage Adjustment
NC 1
NC 2
RT BAL 3
4
-IN
+IN 5
V- 6
NC 7
-
+
14 NC
13 NC
12 BAL
11 V+
10 OUT
9 NC
8 NC
NOTE: Tested Offset Adjustment Range is |VOS + 1mV|
minimum referred to output. Typical range is ±15mV for
RT = 5kΩ.
5
5 Page | ||
| Páginas | Total 9 Páginas | |
| PDF Descargar | [ Datasheet HA-2541.PDF ] | |
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