SEMICONDUCTOR
3-222
November 1996
HA-2542
70MHz, High Slew Rate, High Output
Current Operational Amplifier
Features
• Stable at Gains of 2 or Greater
• Gain Bandwidth . . . . . . . . . . . . . . . . . . . . . . . . . . 70MHz
• High Slew Rate. . . . . . . . . . . . . . . . . . . . . 300V/µs (Min)
• High Output Current . . . . . . . . . . . . . . . . . 100mA (Min)
• Power Bandwidth. . . . . . . . . . . . . . . . . . . . 5.5MHz (Typ)
• Output Voltage Swing . . . . . . . . . . . . . . . . . ±10V (Min)
• Monolithic Bipolar Dielectric Isolation Construction
Applications
• Pulse and Video Amplifiers
• Wideband Amplifiers
• Coaxial Cable Drivers
• Fast Sample-Hold Circuits
• High Frequency Signal Conditioning Circuits
Description
The HA-2542 is a wideband, high slew rate, monolithic
operational amplifier f eaturing an outstanding combination of
speed, bandwidth, and output drive capability.
Utilizing the advantages of the Harris D.I. technology this
amplifier offers 350V/µs slew rate, 70MHz gain bandwidth,
and ±100mA output current. Application of this device is
further enhanced through stable operation down to closed
loop gains of 2.
For additional flexibility, offset null and frequency
compensation controls are included in the HA-2542 pinout.
The capabilities of the HA-2542 are ideally suited for high
speed coaxial cable driver circuits where low gain and high
output drive requirements are necessary. With 5.5MHz full
power bandwidth, this amplifier is most suitable for high
frequency signal conditioning circuits and pulse video
amplifiers. Other applications utilizing the HA-2542
advantages include wideband amplifiers and fast sample-
hold circuits.
For more information on the HA-2542, please refer to
Application Note AN552 (Using the HA-2542), or Application
Note AN556 (Thermal Safe-Operating-Areas for High
Current Op Amps).
Pinouts
HA-2542
(PDIP, CERDIP)
TOP VIEW
HA-2542
(METAL CAN)
TOP VIEW
Ordering Information
PART NUMBER TEMP.
RANGE (oC) PACKAGE PKG.
NO.
HA1-2542-2 -55 to 125 14 Ld CERDIP F14.3
HA1-2542-5 0 to 75 14 Ld CERDIP F14.3
HA2-2542-2 -55 to 125 12 Pin Metal Can T12.C
HA2-2542-5 0 to 75 12 Pin Metal Can T12.C
HA3-2542-5 0 to 75 14 Ld PDIP E14.3
For a lower power version of this product, please see
the HA-2842 data sheet.
NC
NC
BAL
-IN
+IN
V-
NC
NC
BAL
COMP
V+
OUT
NC
NC
1
2
3
4
5
6
7
14
13
12
11
10
9
8
+
-
COMP
+IN
12
1
2
3
4
11 10
9
8
7
6
5
V+ OUTPUT
V-
NC
NC
NC
-IN
BAL
BAL
NC
+
-
CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures.
Copyright © Harris Corporation 1996 File Number 2899.2
3-223
Absolute Maximum Ratings Thermal Information
Supply Voltage (Between V+ and V- Terminals). . . . . . . . . . . . . 35V
Differential Input Voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6V
Output Current . . . . . . . . . . . . . . . . 50mA Continuous, 125mAPEAK
Operating Conditions
Temperature Range
HA-2542-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -55oC to 125oC
HA-2542-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0oC to 75oC
Thermal Resistance (Typical, Note 2) θJA (oC/W) θJC (oC/W)
CERDIP Package . . . . . . . . . . . . . . . . 75 20
PDIP Package . . . . . . . . . . . . . . . . . . . 100 N/A
Metal Can Package . . . . . . . . . . . . . . . 65 34
Maximum J unction Temperature (Note 1, Hermetic Packages) . 175oC
Maximum Junction Temperature (Plastic Package) . . . . . . . . 150oC
Maximum Storage Temperature Range . . . . . . . . . -65oC to 150oC
Maximum Lead Temperature (Soldering 10s). . . . . . . . . . . . .300oC
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 for
ceramic and can packages, and below 150oC for plastic packages. By using Application Note AN556 on Safe Operating Area equations,
along with the thermal resistances, proper load conditions can be determined. Heatsinking will be required in many applications. See the
“Application Information” section to determine if heat sinking is required for your application.
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 TEMP.
(oC)
HA-2542-2
-55oC to 125oCHA-2542-5
0oC to 75oC
UNITSMIN TYP MAX MIN TYP MAX
INPUT CHARACTERISTICS
Offset Voltage 25 - 5 10 - 5 10 mV
Full - 8 20 - 8 20 mV
Average Offset Voltage Drift Full - 14 - - 14 - µV/oC
Bias Current 25 - 15 35 - 15 35 µA
Full - 26 50 - 26 50 µA
Average Bias Current Drift Full - 66 - - 45 - nA/oC
Offset Current 25 - 1 7 - 1 7 µA
Full - - 9 - - 9 µA
Input Resistance 25 - 100 - - 100 - kΩ
Input Capacitance 25 - 1 - - 1 - pF
Common Mode Range Full ±10 - - ±10 - - V
Input Noise Voltage 0.1Hz to 100Hz 25 - 2.2 - - 2.2 - µVP-P
Input Noise Density f = 1kHz, RG = 0Ω25 -10- -10-nV/√Hz
Input Noise Current Density f = 1kHz, RG = 0Ω25 - 3 - - 3 - pA/√Hz
TRANSFER CHARACTERISTICS
Large Signal Voltage Gain VO = ±10V 25 10 30 - 10 30 - kV/V
Full 5 15 - 5 20 - kV/V
Common Mode Rejection Ratio VCM = ±10V Full 70 100 - 70 100 - dB
Minimum Stable Gain 25 2 - - 2 - - V/V
Gain Bandwidth Product AV = 100 25 - 70 - - 70 - MHz
OUTPUT CHARACTERISTICS
Output Voltage Swing Full ±10 ±11 - ±10 ±11 - V
Output Current (Note 3) 25 100 - - 100 - - mA
Output Resistance 25 - 5 - - 5 - Ω
HA-2542
3-224
Full Power Bandwidth (Note 4) VPEAK = 10V 25 4.7 5.5 - 4.7 5.5 - MHz
Differential Gain (Note 5) 25 - 0.1 - - 0.1 - %
Differential Phase (Note 5) 25 - 0.2 - - 0.2 - Degree
Harmonic Distortion (Note 7) 25 - <0.04 - - <0.04 - %
TRANSIENT RESPONSE (Note 6)
Rise Time 25 - 4 - - 4 - ns
Overshoot 25 - 25 - - 25 - %
Slew Rate 25 300 350 - 300 350 - V/µs
Settling Time 10V Step to 0.1% 25 - 100 - - 100 - ns
10V Step to 0.01% 25 - 200 - - 200 - ns
POWER SUPPLY CHARACTERISTICS
Supply Current 25 - 30 - - 30 - mA
Full - 31 34.5 - 31 40 mA
Power Supply Rejection Ratio VS = ±5V to ±15V Full 70 79 - 70 79 - dB
NOTES:
3. RL = 50Ω, VO = ±5V, Output duty cycle must be reduced for IOUT > 50mA (e.g. ≤50% duty cycle for 100mA).
4. Full Power Bandwidth guaranteed based on slew rate measurement using: .
5. Differential gain and phase are measured at 5MHz with a 1V differential input voltage.
6. Refer to Test Circuits section of this data sheet.
7. VIN = 1VRMS; f = 10kHz; AV = 10.
Test Circuits and Waveforms
TEST CIRCUIT LARGE SIGNAL RESPONSE
Electrical Specifications VSUPPLY = ±15V, RL = 1kΩ, CL≤ 10pF, Unless Otherwise Specified (Continued)
PARAMETER TEST
CONDITIONS TEMP.
(oC)
HA-2542-2
-55oC to 125oCHA-2542-5
0oC to 75oC
UNITSMIN TYP MAX MIN TYP MAX
FPBW Slew Rate
2πVPEAK
-----------------------------=
IN OUT
+
-500Ω
500Ω
NOTES:
8. VS = ±15V.
9. AV = +2.
10. CL≤ 10pF.
VIN
VOUT
Vertical Scale: VIN = 2.0V/Div., VOUT = 5.0V/Div.
Horizontal Scale: 200ns/Div.
HA-2542
3-225
SMALL SIGNAL RESPONSE PROPAGATION DELAY
SETTLING TIME TEST CIRCUIT (See Notes 11 - 15.)
NOTES:
11. AV = -2.
12. Feedback and summing resistors must be matched (0.1%).
13. HP5082-2810 clipping diodes recommended.
14. Tektronix P6201 FET probe used at settling point.
15. For 0.01% settling time, heat sinking is suggested to reduce
thermal effects and an analog ground plane with supply
decoupling is suggested to minimize ground loop errors.
Test Circuits and Waveforms
(Continued)
VIN
VOUT
Vertical Scale: 100mV/Div.
Horizontal Scale: 50ns/Div. Vertical Scale: 100mV/Div.
Horizontal Scale: 10ns/Div.
VS = ±15V, RL = 1kΩ. Propagation delay variance
is negligible over full temperature range.
SETTLING
POINT
VOUT
5kΩ
V+
500Ω
V-
+
-
1kΩ
VIN
2.5kΩ
HA-2542
3-226
Schematic Diagram
Application Information
(Refer to Application Note AN552 for Further Information)
The Harris HA-2542 is a state of the art monolithic device
which also approaches the “ALL-IN-ONE” amplifier concept.
This device features an outstanding set of AC parameters
augmented by excellent output drive capability providing for
suitable application in both high speed and high output drive
circuits.
Primarily intended to be used in balanced 50Ω and 75Ω
coaxial cable systems as a driver, the HA-2542 could also be
used as a power booster in audio systems as well as a
power amp in power supply circuits. This device would also
be suitable as a small DC motor driver.
The applications shown in Figures 2 through Figure 4
demonstrate the HA-2542 at gains of +100 and +2 and as a
video cable driver for small signals.
Power Dissipation Considerations
At high output currents, especially with the PDIP package,
care must be taken to ensure that the Maximum Junction
Temperature (TJ, see “Absolute Maximum Ratings” table) is
not exceeded. As an example consider the HA-2542 in the
PDIP package, with a required output current of 20mA at
VOUT = 5V. The power dissipation is the quiescent power
(1.2W = 30V x 40mA) plus the power dissipated in the output
stage (POUT = 200mW = 20mA x (15V - 5V)), or a total of
1.4W. The thermal resistance (θJA) of the PDIP package is
100oC/W, which increases the junction temperature by 140oC
over the ambient temperature (TA). Remaining below TJMAX
requires that TA be restricted to ≤10oC (150oC - 140oC).
Heatsinking would be required for operation at ambient
temperatures greater than 10oC.
Note that the problem isn’t as severe with either the CERDIP
or Can packages due to their lower thermal resistances, and
higher TJMAX. Nevertheless, it is recommended that Figure
1 be used to ensure that heat sinking is not required.
R11 R7R8R9R10
75ΩR25
5kΩR12
75ΩR15
QP15 QP13 QP14 QP34 QP16 QP35 QP33
QP32
QN24
QP25
QN38
QP36
QN23
QP7
QP5
C1
COMP
QN40
QN29
QN10
QN4
QN38
QN2 -IN
C2
QN1
+IN R6
QN9
QN8
QN3
QN37
QN21
QN20
QN19
R22
R2
QN18
R27 R3R28 R4R16 R17 R5R13 R21
R1
QN17
QP43
R14
QN12
QP11
QP31
QN42
R18
QN44
DZ45
BAL BAL V+
V-
OUTPUT
R2A QN22 QN26 QN41
R26
5kΩ
HA-2542
3-227
Allowable output power can be increased by decreasing the
quiescent dissipation via lower supply voltages.
For more information please refer to Application Note
AN556, “Thermal Safe Operating Areas for High Current Op
Amps”.
Prototyping Guidelines
For best overall performance in any application, it is recom-
mended that high frequency layout techniques be used. This
should include: 1) mounting the device through a ground
plane: 2) connecting unused pins (NC) to the ground:
3) mounting feedback components on Teflon standoffs and
or locating these components as close to the device as pos-
sible: 4) placing power supply decoupling capacitors from
device supply pins to ground.
As a result of speed and bandwidth optimization, the
HA-2542 can’s case potential, when powered-up, is equal to
the V- potential. Therefore, contact with other circuitry or
ground should be avoided.
Frequency Compensation
The HA-2542 may be externally compensated with a single
capacitor to ground. This provides the user the additional
flexibility in tailoring the frequency response of the amplifier.
A guideline to the response is demonstrated on the typical
performance curve showing the normalized AC parameters
versus compensation capacitance. It is suggested that the
user check and tailor the accurate compensation value for
each application. As shown additional phase margin is
achieved at the loss of slew rate and bandwidth.
For example, for a voltage gain of +2 (or -1) and a load of
500pF/2kΩ, 20pF is needed for compensation to give a small
signal bandwidth of 30MHz with 40o of phase margin. If a full
power output voltage of ±10V is needed, this same configura-
tion will provide a bandwidth of 5MHz and a slew rate of
200V/µs.
If maximum bandwidth is desired and no compensation is
needed, care must be given to minimize parasitic capaci-
tance at the compensation pin. In some cases where mini-
mum gain applications are desired, bending up or totally
removing this pin may be the solution. In this case, care
must also be given to minimize load capacitance.
For wideband positive unity gain applications, the HA-2542
can also be over-compensated with capacitance greater
than 30pF to achieve bandwidths of around 25MHz. This
over-compensation will also improve capacitive load han-
dling or lower the noise bandwidth. This versatility along with
the ±100mA output current makes the HA-2542 an excellent
high speed driver for many power applications.
OUTPUT CURRENT (100% DUTY CYCLE, mA)
MAXIMUM TA WITHOUT HEATSINK (oC)
0 5 10 15 20 25 30 35 40 45 50
0
20
40
60
80
100
120
CAN
CERDIP
PDIP
VOUT = ±5V
VS = ±15V
FIGURE 1. MAXIMUM OPERA TING TEMPERATURE vs
OUTPUT CURRENT
Typical Applications
FIGURE 2. NONINVERTING CIRCUIT (AVCL = 100)
IN OUT
+
-990Ω
10Ω
GAIN (dB)
40
30
20
10
00
-45
-90
-135
-180
PHASE (DEGREES)
Frequency (0dB) = 44.9MHz,
Phase Margin (0dB) = 40o
FREQUENCY RESPONSE
HA-2542
3-228
FIGURE 3. NONINVERTING CIRCUIT (AVCL = 2)
PULSE RESPONSE
FIGURE 4. VIDEO CABLE DRIVER (AVCL = 2)
FIGURE 5. SUGGESTED OFFSET VOLTAGE ADJUSTMENT AND FREQUENCY COMPENSATION
Typical Applications
(Continued)
IN OUT
+
-50Ω
50Ω
GAIN (dB)
8
6
4
2
00
-45
-90
-135
-180
PHASE (DEGREES)
Frequency (dB) = 56MHz, Phase Margin (3dB) = 40o
FREQUENCY RESPONSE
IN OUT
+
-1kΩ75Ω
1kΩ
75Ω
IN
OUT
1V/Div.; 100ns/Div.
CCOMP
12
1
2
3
4
11 10
9
8
7
6
5
+
-
RT
V+ NOTES:
16. Suggested compensation scheme 5pF - 20pF.
17. Tested Offset Adjustment Range is |VOS +1mV|
minimum referred to output.
18. Typical range is ±20mV with RT = 5kΩ.
HA-2542
3-229
Typical Performance Curves
FIGURE 6. INPUT NOISE VOLTAGE AND INPUT NOISE
CURRENT vs FREQUENCY FIGURE 7. OFFSET VOLTAGE vs TEMPERATURE
FIGURE 8. INPUT RESISTANCE vs FREQUENCY FIGURE 9. BIAS CURRENT vs TEMPERATURE
FIGURE 10. BIAS CURRENT vs SUPPLY VOLTAGE FIGURE 11. PSRR AND CMRR vs TEMPERATURE
INPUT NOISE VOLTAGE (nV/√Hz)
FREQUENCY (Hz)
INPUT NOISE VOLTAGE
INPUT NOISE CURRENT
1000
100
10
1 10 100 1K 10K 100K
1000
100
10
INPUT NOISE CURRENT (pA/√Hz)
1
1
OFFSET VOLTAGE (mV)
TEMPERATURE (oC)
10
8
6
4
2
0
-2
-4
-6
-8
-10 -60 -40 -20 0 20 40 60 80 100 120
VS = ±12V
SIX REPRESENTATIVE UNITS
INPUT RESISTANCE (Ω)
FREQUENCY (Hz)
100K
10K
1000
100
10
100K 1M 10M 100M
TA = 25oC
VS = ±15V
+
-V- 900Ω
100Ω
V+
BIAS CURRENT (µA)
TEMPERATURE (oC)
-60 -40 -20 0 20 40 60 80 100 120
29
27
25
23
21
19
17
15
13
11
9
7
VS = ±12V
SIX REPRESENTATIVE UNITS
BIAS CURRENT (µA)
SUPPLY VOLTAGE (±V)
18
17
16
15
14
13
12
11
10
9
8
7579111315
T
A
= 25oCSIX REPRESENTATIVE UNITS
TEMPERATURE (oC)
(dB)
CMRR
PSRR
120
110
100
90
80
70-60 -40 -20 0 20 40 60 80 100 120
VS = ±15V
HA-2542
3-230
FIGURE 12. SUPPLY CURRENT vs SUPPLY VOLTAGE,
AT VARIOUS TEMPERATURES FIGURE 13. PSRR AND CMRR vs FREQUENCY
FIGURE 14. SLEW RATE vs TEMPERATURE AT VARIOUS
SUPPLY VOLTAGES FIGURE 15. OPEN LOOP GAIN vs TEMPERATURE,
AT VARIOUS SUPPLY VOLTAGES
FIGURE 16. OUTPUT V OLTAGE SWING vs SUPPLY V OLT AGE,
AT VARIOUS TEMPERATURES FIGURE 17. NORMALIZED AC P ARAMETERS vs COMPENSATION
CAPACITANCE
Typical Performance Curves
(Continued)
25oC
125oC
-55oC
SUPPLY CURRENT (mA)
SUPPLY VOLTAGE (±V)
32
30
28
26
24
22
20
18
16
14
12468101214
(dB)
FREQUENCY (Hz)
120
100
80
60
40
20
0
100 1K 10K 100K 1M 10M
-PSRR
+PSRR
CMRR
VS = ±15V
TA = 25oC
RL = 2kΩ
TEMPERATURE (oC)
SLEW RATE (V/µs)
500
400
300
200
100
0-50 -25 0 25 50 75 100 125
RL = 100Ω
±15V
±5V
±10V
AV= 10
AV= 2
AV= 2
AV= 2
AV= 10
AV= 10
±5V
±10V
±15V
AVOL (kV/V)
TEMPERATURE (oC)
55
50
45
40
35
30
25
20
15
10-60 -40 -20 0 20 40 60 80 100 120
VS = ±12
VS = ±7
VS = ±8
VS = ±15
OUTPUT VOLTAGE SWING (V)
SUPPLY VOLTAGE (±V)
12.0
10.0
8.0
6.0
4.0
2.0
0.0
-2.0
-4.0
-6.0
-8.0
-10.0
-12.0
-14.0 579111315
-55oC
+VOUT 25oC
+VOUT
125oC
+VOUT
-55oC
-VOUT
25oC
-VOUT 125oC
-VOUT
NORMALIZED TO VALUE AT 0pF
COMPENSATION CAPACITANCE (pF)
1.4
1.3
1.2
1.1
1.0
0.9
0.8
0.7
0.6
0.5 5 10152025
SLEW RATE
PHASE MARGIN
BANDWIDTH
0
HA-2542
3-231
FIGURE 18. OUTPUT VOLTAGE SWING vs FREQUENCY FIGURE 19. OUTPUT VOLTAGE SWING vs FREQUENCY
FIGURE 20. FREQUENCY RESPONSE CURVES FIGURE 21. HA-2542 CLOSED LOOP GAIN vs TEMPERATURE
Typical Performance Curves
(Continued)
FREQUENCY (Hz)
12
10
8
6
4
2
00.1 1 10 100
UNDISTORTED
AV = 10
VS = ±15V
TA = 25oC
HA-2542
SWING
RL = 1kΩ
MAXIMUM SWING
OUTPUT VOLTAGE (V)
RL = 100Ω
MAXIMUM SWING
UNDISTORTED SWING
FREQUENCY (Hz)
OUTPUT VOLTAGE (V)
12
10
8
6
4
2
00.1 1 10 100
RL = 100Ω
MAXIMUM SWING
UNDISTORTED SWING
RL = 1kΩ
MAXIMUM SWING
UNDISTORTED SWING
AV = 10
VS = ±10V
TA = 25oC
HA-2542
AV = 1000
FREQUENCY (MHz)
GAIN (dB)
70
60
50
40
30
20
10
00.1 1 10 100
AV = 100
AV = 10
AV = 2
TA = 25oC
RL = 1kΩ
VS = ±15V
HA-2542
GAIN (dB)
12
9
6
3
100K 1M 10M 100M
+
-V- 500Ω
500Ω
V+
0VIN
-180
-135
-90
-45
0
PHASE (DEGREES)
GAIN = +2
VS = ±8V
RL = 1kΩ
CL≤ 10pF
VIN ≤ 90mV
GAIN
PHASE
25oC
125oC
-55oC
FREQUENCY (Hz)
25oC
125oC
-55oC
HA-2542
3-232
Die Characteristics
DIE DIMENSIONS:
106 mils x 73 mils x 19 mils
2700µm x 1850µm x 483µm
METALLIZATION:
Type: Al, 1% Cu
Thickness: 16kű2kÅ
PASSIVATION
Type: Nitride (Si3N4) over Silox (SiO2, 5% Phos.)
Silox Thickness: 12kű2kÅ
Nitride Thickness: 3.5kű1.5kÅ
SUBSTRATE POTENTIAL (Powered Up):
V-
TRANSISTOR COUNT:
43
PROCESS:
Bipolar Dielectric Isolation
Metallization Mask Layout
HA-2542
COMPV+OUTPUTV-
+IN
-IN
BAL
BAL
HA-2542
