DATASHEET

HA-2541
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Data
November 19, 2004
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1-888®
FN2898.4
40MHz, Fast Settling, Unity Gain Stable,
Operational Amplifier
Features
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.
• High Slew Rate . . . . . . . . . . . . . . . . . . . . . . . . . . 250V/μs
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.
• Unity Gain Bandwidth. . . . . . . . . . . . . . . . . . . . . . . 40MHz
• 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
MIL-STD-883 product and data sheets are available upon
request.
• Fast, Precise D/A Converters
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). Also see ‘Applications’
in this data sheet.
Part Number Information
For a lower power version of this product, please see
the HA-2841 data sheet.
• High Speed A/D Input Buffer
PART
NUMBER
HA1-2541-5
TEMP.
RANGE (oC)
PACKAGE
0 to 75
14 Ld CERDIP
PKG. NO.
F14.3
Pinout
HA1-2541
(CERDIP)
TOP VIEW
NC 1
14 NC
NC 2
13 NC
BAL 3
-IN 4
+IN 5
1
12 BAL
-
+
11 V+
10 OUT
V- 6
9 NC
NC 7
8 NC
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright Intersil Americas Inc. 1999, 2004. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
HA-2541
Absolute Maximum Ratings
Thermal Information
Voltage Between V+ and V- Terminals . . . . . . . . . . . . . . . . . . . 35V
Differential Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6V
Peak Output Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50mA
Continuous Output Current . . . . . . . . . . . . . . . . . . . . . . . 28mARMS
Thermal Resistance (Typical, Note 2)
θJA (oC/W) θJC (oC/W)
CERDIP Package. . . . . . . . . . . . . . . . .
75
20
Maximum Junction Temperature (Note 1) . . . . . . . . . . . . . . . .175oC
Maximum Storage Temperature Range . . . . . . . . . -65oC to 150oC
Maximum Lead Temperature (Soldering 10s) . . . . . . . . . . . . 300oC
Operating Conditions
Temperature Range
HA-2541-5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0oC to 75oC
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 175oC. By using Application Note AN556 on Safe Operating Area equations, along with the thermal resistances, proper load conditions can be determined. Heat
sinking is recommended above 75oC.
2. θJA is measured with the component mounted on an evaluation PC board in free air.
Electrical Specifications
VSUPPLY = ±15V, RL = 1kΩ, CL ≤ 10pF, Unless Otherwise Specified
PARAMETER
TEST
CONDITIONS
HA-2541-5
0oC TO 75oC
TEMP
(oC)
MIN
TYP
MAX
UNITS
INPUT CHARACTERISTICS
Offset Voltage
25
-
1
2
mV
Full
-
-
6
mV
Average Offset Voltage Drift
Full
-
9
-
μV/oC
Bias Current
25
-
11
35
μA
Full
-
-
50
μA
Average Bias Current Drift
Full
-
85
-
nA/oC
Offset Current
25
-
1
7
μA
Full
-
-
9
μA
Input Resistance
25
-
100
-
kΩ
Input Capacitance
25
-
1
-
pF
Full
±10
±11
-
V
Input Noise Voltage
f = 1kHz, Rg = 0Ω
25
-
10
-
nV/√Hz
Input Noise Current
f = 1kHz, Rg = 0Ω
25
-
4
-
pA/√Hz
VO = ±10V
25
10
16
-
kV/V
Full
5
-
-
kV/V
Full
70
90
-
dB
25
1
-
-
V/V
VO = 90mV
25
-
40
-
MHz
Output Voltage Swing
RL = 1kΩ
Full
±10
±11
-
V
Output Current
RL = 1kΩ
Common Mode Range
TRANSFER CHARACTERISTICS
Large Signal Voltage Gain
VCM = ±10V
Common Mode Rejection Ratio
Minimum Stable Gain
Unity Gain Bandwidth
OUTPUT CHARACTERISTICS
Output Resistance
Full Power Bandwidth (Note 3)
VP = 10V
25
±10
±15
-
mA
25
-
2
-
Ω
25
3
4
-
MHz
Differential Gain
Note 4
25
-
0.1
-
%
Differential Phase
Note 4
25
-
0.2
-
Degrees
Harmonic Distortion
Note 6
25
-
<0.01
-
%
2
FN2898.4
November 19, 2004
HA-2541
Electrical Specifications
VSUPPLY = ±15V, RL = 1kΩ, CL ≤ 10pF, Unless Otherwise Specified (Continued)
TEST
CONDITIONS
HA-2541-5
0oC TO 75oC
TEMP
(oC)
MIN
Rise Time
25
-
Overshoot
25
-
PARAMETER
TYP
MAX
UNITS
4
-
ns
40
-
%
TRANSIENT RESPONSE (Note 5)
Slew Rate
Settling Time
25
200
250
-
V/μs
10V Step To 0.1%
25
-
90
-
ns
10V Step To 0.01%
25
-
175
-
ns
25
-
29
-
mA
Full
-
-
40
mA
Full
70
78
-
dB
POWER REQUIREMENTS
Supply Current
VS = ±5V to ±15V
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; AV = 5; VO = 14VP-P.
Test Circuits and Waveforms
SETTLING
POINT
VIN
+
VOUT
-
1kΩ
5kΩ
NOTES:
7. VS = ±15V.
2kΩ
8. AV = +1.
9. CL ≤ 10pF.
5kΩ
2kΩ
VIN
-
+
VOUT
NOTES:
10. AV = -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
VIN
VIN
0V
0V
VOUT
VOUT
0V
0V
Vertical Scale: 5V/Div.
Horizontal Scale: 50ns/Div.
LARGE SIGNAL RESPONSE
3
Vertical Scale: VIN = 100mV/Div., VOUT = 50mV/Div.
Horizontal Scale: 20ns/Div.
SMALL SIGNAL RESPONSE
FN2898.4
November 19, 2004
HA-2541
Test Circuits and Waveforms
(Continued)
NOTES:
14. VS = ±15V, RL = 1kΩ.
15. TA = 25oC.
VIN
16. Propagation delay variance is
negligible over full temperature range.
VOUT
Vertical Scale: 100mV/Div.
Horizontal Scale: 5ns/Div.
PROPAGATION DELAY
Schematic Diagram
BALANCE
R7
R8
R9
QP15
QP13
R11
R10
R12
QP14
QP16
QP33
BALANCE
R27
5K
R15
V+
R28
5K
QP55
R23
QN49
QP32
QP5
QP31
QP7
C1
QN23
QP11
+IN
QN45
QN44
QP30
-IN
QN2
QN1
R6
QN20
VOUT
QP25
R19
Z41
QN34
QN18
QP54
R24
QN51
QN52
QN17
QN9
QN8
R2
R3
C2
QN20
QN21
QN46
QN27
QN29
QN47
QN5
QN37
QN22
R30
R16
R4
R31
R21
QN10
QN3
R29
R1
QN4
R32
R17
R5
QN42
QN26
R13
QN43
QN28
R18
R20
R14
V-
4
FN2898.4
November 19, 2004
HA-2541
Typical Applications
(Also see Application Note AN550)
Application 1
Application 2
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.
VIDEO
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.
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.
532pF
50Ω
+
R1
-
1kΩ
R2
HA-2541
D3
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.
1kΩ
R3
2N5886
1kΩ
D1
HP2835
100Ω
D2
HP2835
HA-2541
3.57MHz
TRAP
1kΩ
1kΩ
1kΩ
LOAD 16.6Ω; 6000pF
OR 12.5Ω; 6000pF
FIGURE 3. DRIVING POWER TRANSISTORS TO GAIN
ADDITIONAL CURRENT BOOSTING
75Ω
FIGURE 4. VIDEO DC RESTORER
Suggested Offset Voltage Adjustment
RT
NC 1
14 NC
NC 2
13 NC
BAL
-IN
3
12
4
11
+IN 5
V- 6
NC 7
5
-
+
BAL
NOTE: Tested Offset Adjustment Range is |VOS +
1mV| minimum referred to output. Typical range is
±15mV for RT = 5kΩ.
V+
10 OUT
9 NC
8 NC
FN2898.4
November 19, 2004
HA-2541
Typical Performance Curves
3.0
TA = 25oC, VS = ±15V
2.5
2.0
OFFSET VOLTAGE (mV)
INPUT RESISTANCE (Ω)
100K
10K
V+
1000
+
-
V100
900Ω
1.5
1.0
0.5
0
-0.5
-1.0
-1.5
-2.0
100Ω
-2.5
10
100K
1M
10M
FREQUENCY (Hz)
TA = 25oC
100
100
ENI
10
10
INI
1
100
1K
FREQUENCY (Hz)
BIAS CURRENT (μA)
1000
10
-20
0
20
40
60
80
100
120
100
120
FIGURE 6. OFFSET VOLTAGE vs TEMPERATURE
(6 REPRESENTATIVE UNITS)
INPUT NOISE CURRENT (pA/√Hz)
INPUT NOISE VOLTAGE (nV/√Hz)
1000
1
-40
TEMPERATURE (oC)
FIGURE 5. INPUT RESISTANCE vs FREQUENCY
1
100K
10K
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
-60
-40
-20
0
20
40
60
80
TEMPERATURE (oC)
FIGURE 7. NOISE DENSITY vs FREQUENCY
FIGURE 8. BIAS CURRENT vs TEMPERATURE
(6 REPRESENTATIVE UNITS)
60
12
10
125oC
+VOUT
25oC
8
-55oC
+VOUT
6
4
50
IOUT (mA)
-2
-4
-12
10
-55oC
-IOUT
0
5
25oC
-IOUT
125oC
-IOUT
-30
125oC
+VOUT
-14
3
+IOUT
-20
25oC
+VOUT
-10
125oC
+IOUT
20
-10
-55oC
+VOUT
-8
-55oC
+IOUT
30
0
-6
25oC
40
+VOUT
2
VOUT (V)
-3.0
-60
100M
7
9
11
SUPPLY VOLTAGE (±V)
-40
13
15
FIGURE 9. OUTPUT VOLTAGE SWING vs SUPPLY VOLTAGE
6
3
5
7
9
11
SUPPLY VOLTAGE (±V)
13
15
FIGURE 10. OUTPUT CURRENT vs SUPPLY VOLTAGE
FN2898.4
November 19, 2004
HA-2541
Typical Performance Curves
(Continued)
30
1.2
28
1.1
NORMALIZED SLEW RATE
SUPPLY CURRENT (mA)
26
24
22
20
125oC
18
16
25oC
14
12
0.9
125oC
0.8
0.7
V+
0.6
VIN
-55oC
8
0.3
25oC
6
0.2
VOUT
RL
V-
CL
RL = 2kΩ
CL ≤ 10pF
0.1
3
5
11
7
9
SUPPLY VOLTAGE (±V)
13
15
FIGURE 11. SUPPLY CURRENT vs SUPPLY VOLTAGE
5
86
85
84
82
25oC
+PSRR
+PSRR
81
125oC
80
-PSRR
79
78
77
125oC
-55oC
25oC
-55oC
-PSRR
-PSRR
+PSRR
CMRR (dB)
83
76
3
5
7
9
11
13
15
122
120
118
116
114
112
110
108
106
104
102
100
98
96
94
92
90
15
25oC
-55oC
3
5
7
9
11
13
15
FIGURE 14. CMRR vs SUPPLY VOLTAGE (AVERAGE OF 3 LOTS)
20
VS = ±15V, RL = 2kΩ, TA = 25oC
19
18
CMRR
17
+PSRR
±AVOL AT TA ≥ 25oC
AVOL (kV/V)
16
80
60
13
SUPPLY VOLTAGE (±V)
FIGURE 13. PSRR vs SUPPLY VOLTAGE (AVERAGE OF 3 LOTS)
100
9
11
SUPPLY VOLTAGE (±V)
125oC
SUPPLY VOLTAGE (±V)
120
7
FIGURE 12. SLEW RATE vs SUPPLY VOLTAGE
(NORMALIZED WITH VS = ±15V AT 25oC)
87
(dB)
+
-
0.5
0.4
-55oC
10
4
PSRR (dB)
1.0
-PSRR
40
15
14
13
±AVOL AT TA = -55oC
12
20
11
0
10
9
100
1K
10K
100K
1M
FREQUENCY (Hz)
FIGURE 15. REJECTION RATIOS vs FREQUENCY
7
10M
8
8
10
12
14
SUPPLY VOLTAGE (±V)
FIGURE 16. OPEN LOOP GAIN vs SUPPLY VOLTAGE
(AVERAGE OF 3 LOTS)
FN2898.4
November 19, 2004
HA-2541
Typical Performance Curves
(Continued)
100
15
40
10
GAIN (dB)
20
180
135
10
OPEN LOOP
100
90
45
PHASE
0
1K
10K 100K
1M
FREQUENCY (Hz)
AV = -100
10M
AV = -10
5
PHASE
0
-5
PHASE (DEGREES)
0
GAIN
-10
0
RS
VIN
VOUT
900Ω
-
50Ω
-90
-135
100Ω
AV +10
PHASE
VS = ±15V
o
T = 25 C
100M
1K
10K
100K
1M
FREQUENCY (Hz)
RS = 0Ω
AV = -1
FIGURE 17. GAIN AND PHASE FREQUENCY RESPONSE
-45
+
RS = 5kΩ
-180
10M
100M
RS = 50kΩ
FIGURE 18. SMALL SIGNAL BANDWIDTH vs SOURCE
RESISTANCE
VS = ±8V, AV = +1
RL = 2kΩ, CL ≤ 10pF
9
TA = 125oC
GAIN (dB)
6
GAIN
TA = 25oC
TA = -55oC
3
0
0
-45
-3
-90
-6
-9
PHASE
TA = 125oC
TA = 25oC
TA = -55oC
-135
-180
-225
100K
1M
10M
FREQUENCY (Hz)
PHASE (DEGREES)
GAIN (dB)
60
VS = ±15V
RL = 1kΩ
CL ≤ 10pF
TA = 25oC
VS = ±15V, RL = 1kΩ
20
PHASE (DEGREES)
GAIN
80
100M
FIGURE 19. CLOSED LOOP FREQUENCY RESPONSE
8
FN2898.4
November 19, 2004
HA-2541
Die Characteristics
DIE DIMENSIONS:
SUBSTRATE POTENTIAL (Powered Up):
80 mils x 90 mils x 19 mils
2020μm x 2280μm x 483μm
VTRANSISTOR COUNT:
METALLIZATION:
41
Type: Al, 1% Cu
Thickness: 16kÅ ±2kÅ
PROCESS:
Bipolar Dielectric Isolation
PASSIVATION:
Type: Nitride(Si3N4) over Silox (SiO2, 5% Phos.)
Silox Thickness: 12kÅ ±2kÅ
Nitride Thickness: 3.5kÅ ±1.5kÅ
Metallization Mask Layout
HA-2541
-IN
+IN
BAL
V-
NC
BAL
OUTPUT
V+
All Intersil U.S. products are manufactured, assembled and tested utilizing ISO9000 quality systems.
Intersil Corporation’s quality certifications can be viewed at www.intersil.com/design/quality
Intersil products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design, software and/or specifications at any time without
notice. Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and
reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result
from its use. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries.
For information regarding Intersil Corporation and its products, see www.intersil.com
9
FN2898.4
November 19, 2004
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