CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the
device at these or any other conditions above those indicated in the operational sections of this specification is not implied.
NOTES:
1. Maximum power dissipation with load conditions must be designed to maintain the maximum junction temperature below 175
o
C. By using Ap-
plication Note AN556 on Safe Operating Area equations, along with the thermal resistances, proper load conditions can be determined. Heat
sinking is recommended above 75
o
C.
2.
θ
JA
is measured with the component mounted on an evaluation PC board in free air.
Electrical Specifications
V
SUPPLY
=
±15V,
R
L
= 1kΩ, C
L
≤
10pF, Unless Otherwise Specified
0
o
C TO 75
o
C
MIN
TYP
MAX
UNITS
HA-2541-5
PARAMETER
INPUT CHARACTERISTICS
Offset Voltage
TEST
CONDITIONS
TEMP
(
o
C)
25
Full
-
-
-
-
-
-
-
-
-
-
±10
-
-
1
-
9
11
-
85
1
-
100
1
±11
10
4
2
6
-
35
50
-
7
9
-
-
-
-
-
mV
mV
µV/
o
C
µA
µA
nA/
o
C
µA
µA
kΩ
pF
V
nV/√Hz
pA/√Hz
Average Offset Voltage Drift
Bias Current
Full
25
Full
Average Bias Current Drift
Offset Current
Full
25
Full
Input Resistance
Input Capacitance
Common Mode Range
Input Noise Voltage
Input Noise Current
TRANSFER CHARACTERISTICS
Large Signal Voltage Gain
V
O
=
±10V
V
CM
=
±10V
V
O
= 90mV
R
L
= 1kΩ
R
L
= 1kΩ
V
P
= 10V
Note 4
Note 4
Note 6
f = 1kHz, R
g
= 0Ω
f = 1kHz, R
g
= 0Ω
25
25
Full
25
25
25
Full
10
5
70
1
-
±10
±10
-
3
-
-
-
16
-
90
-
40
±11
±15
2
4
0.1
0.2
<0.01
-
-
-
-
-
kV/V
kV/V
dB
V/V
MHz
Common Mode Rejection Ratio
Minimum Stable Gain
Unity Gain Bandwidth
OUTPUT CHARACTERISTICS
Output Voltage Swing
Output Current
Output Resistance
Full Power Bandwidth (Note 3)
Differential Gain
Differential Phase
Harmonic Distortion
Full
25
25
Full
25
25
25
25
25
25
-
-
-
-
-
-
-
V
mA
Ω
MHz
%
Degrees
%
2
HA-2541
Electrical Specifications
V
SUPPLY
=
±15V,
R
L
= 1kΩ, C
L
≤
10pF, Unless Otherwise Specified
(Continued)
0
o
C TO 75
o
C
MIN
TYP
MAX
UNITS
HA-2541-5
PARAMETER
TRANSIENT RESPONSE
(Note 5)
Rise Time
Overshoot
Slew Rate
Settling Time
TEST
CONDITIONS
TEMP
(
o
C)
25
25
25
10V Step To 0.1%
10V Step To 0.01%
25
25
-
-
200
-
-
4
40
250
90
175
-
-
-
-
-
ns
%
V/µs
ns
ns
POWER REQUIREMENTS
Supply Current
V
S
=
±5V
to
±15V
25
Full
Power Supply Rejection Ratio
NOTES:
Slew Rate
3. Full Power Bandwidth guaranteed based on slew rate measurement using: FPBW
= ----------------------------
.
-
2πV PEAK
4. Differential Gain and Phase are measured with a 1V differential voltage at 5MHz.
5. Refer to Test Circuits section of this data sheet.
6. f = 10kHz; A
V
= 5; V
O
= 14V
P-P.
Full
-
-
70
29
-
78
-
40
-
mA
mA
dB
Test Circuits and Waveforms
SETTLING
POINT
V
IN
+
5kΩ
5kΩ
2kΩ
2kΩ
V
IN
+
-
V
OUT
1kΩ
NOTES:
7. V
S
=
±15V.
8. A
V
= +1.
9. C
L
≤
10pF.
-
V
OUT
NOTES:
10. A
V
= -1.
11. Feedback and summing resistor ratios should be 0.1% matched.
12. HP5082-2810 clipping diodes recommended.
13. Tektronix P6201 FET probe used at settling point.
FIGURE 1. TRANSIENT RESPONSE TEST CIRCUIT
FIGURE 2. SETTLING TIME TEST CIRCUIT
V
IN
V
IN
0V
0V
V
OUT
V
OUT
0V
0V
Vertical Scale: 5V/Div.
Horizontal Scale: 50ns/Div.
LARGE SIGNAL RESPONSE
Vertical Scale: V
IN
= 100mV/Div., V
OUT
= 50mV/Div.
Horizontal Scale: 20ns/Div.
SMALL SIGNAL RESPONSE
3
HA-2541
Test Circuits and Waveforms
(Continued)
NOTES:
V
IN
14. V
S
=
±15V,
R
L
= 1kΩ.
15. T
A
= 25
o
C.
V
OUT
16. Propagation delay variance is
negligible over full temperature range.
Vertical Scale: 100mV/Div.
Horizontal Scale: 5ns/Div.
PROPAGATION DELAY
Schematic Diagram
BALANCE
R
7
Q
P15
R
11
Q
P31
Q
P13
R
23
Q
N49
Q
P5
Q
P32
Q
P7
C
1
Q
P11
+IN
Q
N45
Q
N1
R
6
Q
N44
Z
41
Q
P54
R
24
Q
N51
Q
N52
Q
N17
R
29
R
1
R
2
R
3
R
31
R
4
R
32
V-
Q
N20
Q
N21
Q
N37
R
30
R
16
R
17
R
5
R
19
Q
N18
Q
N8
Q
N9
C
2
Q
N3
Q
N5
Q
N22
Q
N26
R
13
Q
N43
R
18
R
20
Q
N34
Q
N4
Q
N10
Q
N29
Q
N47
Q
N42
Q
N28
R
14
R
21
Q
N46
Q
N27
Q
N2
Q
P25
V
OUT
-IN
Q
N23
Q
P30
Q
N20
R
8
R
9
R
10
Q
P14
R
12
Q
P16
Q
P33
R
15
R
27
5K
Q
P55
BALANCE
V+
R
28
5K
4
HA-2541
Typical Applications
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.
532pF
50Ω
+
R
1
D
3
HA-2541
R
2
2N5886
1kΩ
R
3
100Ω
HP2835
HP2835
D
2
3.57MHz
TRAP
1kΩ
1kΩ
1kΩ
LOAD 16.6Ω; 6000pF
OR 12.5Ω; 6000pF
75Ω
D
1
HA-2541
1kΩ
1kΩ
(Also see Application Note AN550)
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
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