1
HA-2620, HA-2625
100MHz, High Input Impedance, Very
Wideband, Uncompensated Operational
Amplifiers
HA-2620/2625 are bipolar operational amplifiers that feature
very high input impedance (500M
, HA-2620) coupled with
wideband AC performance. The high resistance of the input
stage is complemented by low offset voltage (0.5mV,
HA-2620) and low bias and offset current (1nA, HA-2620) to
facilitate accurate signal processing. Input offset can be
reduced further by means of an external nulling
potentiometer. The 100MHz gain bandwidth product
(HA-2620/2625 are stable for closed loop gains greater than
5), 35V/
s slew rate and 150kV/V open loop gain enables
HA-2620/2625 to perform high gain amplification of very fast,
wideband signals. These dynamic characteristics, coupled
with fast settling times, make these amplifiers ideally suited
to pulse amplification designs as well as high frequency
(e.g., video) applications. The frequency response of the
amplifier can be tailored to exact design requirements by
means of an external bandwidth control capacitor connected
from the Comp pin to GND.
In addition to its application in pulse and video amplifier
designs, HA-2620/2625 is particularly suited to other high
performance designs such as high-gain low distortion audio
amplifiers, high-Q and wideband active filters and high-
speed comparators. For more information, please refer to
Application Notes AN509, AN519 and AN546.
The HA-2620 is offered as /883 Military Grade. MIL-STD-
883 data sheet is available upon request. Intersil AnswerFAX
(321-724-7800) Document #3701.
Features
Gain Bandwidth Product (A
V
5) . . . . . . . . . . . . . 100MHz
High Input Impedance . . . . . . . . . . . . . . . . . . . . . 500M
Low Input Bias Current . . . . . . . . . . . . . . . . . . . . . . . . 1nA
Low Input Offset Current . . . . . . . . . . . . . . . . . . . . . . 1nA
Low Input Offset Voltage . . . . . . . . . . . . . . . . . . . . 0.5mV
High Gain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150kV/V
Slew Rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35V/
s
Output Short Circuit Protection
Compensation Pin for Unity Gain Capability
Applications
Video and RF Amplifier
Pulse Amplifier
Audio Amplifiers and Filters
High-Q Active Filters
High Speed Comparators
Low Distortion Oscillator
Pinouts
HA-2625 (PDIP, SOIC)
TOP VIEW
HA-2620, HA-2625 (METAL CAN)
TOP VIEW
Ordering Information
PART NUMBER
(BRAND)
TEMP.
RANGE (
o
C)
PACKAGE
PKG.
NO.
HA2-2620-2
-55 to 125
8 Pin Metal Can
T8.C
HA2-2625-5
0 to 75
8 Pin Metal Can
T8.C
HA3-2625-5
0 to 75
8 Ld PDIP
E8.3
HA9P2625-5
(H26255)
0 to 75
8 Ld SOIC
M8.15
HA9P2625-9
(H26259)
-40 to 85
8 Ld SOIC
M8.15
1
2
3
4
8
7
6
5
+
BAL
-IN
+IN
V-
COMP
V+
OUT
BAL
-
COMP
OUT
-IN
BAL
+IN
V+
BAL
2
4
6
1
3
7
5
8
+
V-
-
Data Sheet
November 1999
File Number
2903.4
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143 | Copyright Intersil Corporation 1999
2
Absolute Maximum Ratings
Thermal Information
Supply Voltage (Between V+ and V- Terminals) . . . . . . . . . . . . 45V
Differential Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12V
Peak Output Current . . . . . . . . . . . . . . . Full Short Circuit Protection
Operating Conditions
Temperature Range
HA-2620-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -55
o
C to 125
o
C
HA-2625-5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0
o
C to 75
o
C
HA-2625-9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -40
o
C to 85
o
C
Thermal Resistance (Typical, Note 1)
JA
(
o
C/W)
JC
(
o
C/W)
PDIP Package . . . . . . . . . . . . . . . . . . .
117
N/A
SOIC Package . . . . . . . . . . . . . . . . . . .
165
N/A
Metal Can Package . . . . . . . . . . . . . . .
165
80
Maximum Junction Temperature (Hermetic Package) . . . . . . . .175
o
C
Maximum Junction Temperature (Plastic Package) . . . . . . . .150
o
C
Maximum Storage Temperature Range . . . . . . . . . . -65
o
C to 150
o
C
Maximum Lead Temperature (Soldering 10s) . . . . . . . . . . . . 300
o
C
(SOIC - Lead Tips Only)
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.
NOTE:
1.
JA
is measured with the component mounted on an evaluation PC board in free air.
Electrical Specifications
V
SUPPLY
=
15V, Unless Otherwise Specified
PARAMETER
TEMP.
(
o
C)
HA-2620-2
HA-2625-5, -9
UNITS
MIN
TYP
MAX
MIN
TYP
MAX
INPUT CHARACTERISTICS
Offset Voltage
(Note 3)
25
-
0.5
4
-
3
5
mV
Full
-
2
6
-
-
7
mV
Average Offset
Voltage Drift
Full
-
5
-
-
5
-
V/
o
C
Bias Current
25
-
1
15
-
5
25
nA
Full
-
10
35
-
-
40
nA
Offset Current
25
1
15
-
5
25
nA
Full
-
5
35
-
-
40
nA
Differential Input
Resistance (Note 2)
25
65
500
-
40
300
-
M
Input Noise Voltage Density
(f = 1kHz)
25
-
11
-
-
11
-
nV/
Hz
Input Noise Current Density
(f = 1kHz)
25
-
0.16
-
-
0.16
-
pA/
Hz
Common Mode Range
Full
11
12
-
11
12
-
V
TRANSFER CHARACTERISTICS
Large Signal Voltage Gain
(Notes 4, 5)
25
100
150
-
80
150
-
kV/V
Full
70
-
-
70
-
-
kV/V
Common Mode Rejection Ratio
(Note 6)
Full
80
100
-
74
100
-
dB
Minimum Stable Gain
25
5
-
-
5
-
-
V/V
Gain Bandwidth Product
(Notes 4, 7, 8)
25
-
100
-
-
100
-
MHz
OUTPUT CHARACTERISTICS
Output Voltage Swing (Note 4)
Full
10
12
-
10
12
-
V
Output Current (Note 5)
25
15
22
-
10
18
-
mA
Full Power Bandwidth
(Notes 4, 5, 9, 13)
25
400
600
-
320
600
-
kHz
TRANSIENT RESPONSE (Note 8)
Rise Time
(Notes 4, 9, 10)
25
-
17
45
-
17
45
ns
Slew Rate
(Notes 4, 9, 10, 12)
25
25
35
-
20
35
-
V/
s
HA-2620, HA-2625
3
POWER SUPPLY CHARACTERISTICS
Supply Current
25
-
3
3.7
-
3
4
mA
Power Supply Rejection Ratio
(Note 11)
Full
80
90
-
74
90
-
dB
NOTES:
2. This parameter value guaranteed by design calculations.
3. Offset may be externally adjusted to zero.
4. R
L
= 2k
.
5. V
OUT
=
10V.
6. V
CM
=
10V.
7. V
OUT
< 90mV.
8. 40dB Gain.
9. See Transient Response Test Circuits and Waveforms.
10. A
V
= 5 (The HA-2620 family is not stable at unity gain without external compensation).
11.
V
S
=
5V.
12. V
OUT
=
5V.
13. Full Power Bandwidth guaranteed by slew rate measurement:
.
Electrical Specifications
V
SUPPLY
=
15V, Unless Otherwise Specified (Continued)
PARAMETER
TEMP.
(
o
C)
HA-2620-2
HA-2625-5, -9
UNITS
MIN
TYP
MAX
MIN
TYP
MAX
FPBW
Slew Rate
2
V
PEAK
-----------------------------
=
Test Circuits and Waveforms
NOTE: Measured on both positive and negative transitions from 0V
to +200mV and 0V to -200mV at output.
TRANSIENT RESPONSE
SLEW RATE
NOTE: Tested Offset Adjustment is |V
OS
+ 1mV| minimum referred to
output. Typical range is
10mV with R
T
= 100k
.
SLEW RATE AND TRANSIENT RESPONSE
SUGGESTED V
OS
ADJUSTMENT AND
COMPENSATION HOOK-UP
40mV
INPUT
0V
200mV
90%
OUTPUT
10%
0V
RISE TIME
INPUT
1V
-1V
+5V
90%
OUTPUT
10%
-5V
SLEW RATE
=
V/
t
t
V
IN
1.6k
400
OUT
50pF
+
-
V+
OUT
V-
BAL
100k
IN
COMP
C
C
HA-2620, HA-2625
4
Schematic Diagram
BAL
R
1
1K
R
2
4.18K
R
3
1.56K
R
4
1.56K
Q
1
Q
3
Q
4
Q
5
Q
6
Q
7
Q
11
+INPUT
Q
8
Q
13
Q
16
Q
30
Q
29
Q
31
Q
28
Q
26
Q
25
Q
9
Q
10
Q
17
Q
18
Q
27
Q
12
Q
15
Q
2
Q
40
Q
38
Q
37
Q
24
Q
19
R
7
1.35
R
19
2.5K
R
P1
BAL
C
2
9pF
R
5
600
R
6
15
V+
Q
41
Q
42
Q
60
Q
61
Q
59
Q
58
Q
57
Q
55
Q
54
Q
43
Q
44
Q
45
Q
46
Q
47
COMPENSATION
OUT
R
18
30
R
17
30
Q
52
Q
51
R
11
4.0K
Q
49
Q
50
C
1
16pF
R
12
1.6K
R
13
1.6K
R
14
1.6K
Q
22
Q
23
R
9
4.5K
R
10
2.0K
Q
21
Q
48
R
15
800
Q
36
Q
35
Q
32
Q
33
Q
56
Q
53
R
16
15
V-
Q
20
R
8
1K
-INPUT
Q
39
Typical Applications
FIGURE 1. HIGH INPUT IMPEDANCE COMPARATOR
FIGURE 2. FUNCTION GENERATOR
50pF (NOTE)
+
V
REF
4.25V
1N916
1N916
-15V
V
IN
V
OUT
+5.0V, 0V
+15V
2.2k
HA-2620
-
2
3
7
8
4
6
50pF
+
OUTPUT
COMP
+
~OUTPUT
R
2
R
1
10k
100k
2.2k
2.2k
f =
1
4 (R
1
+ R
2
) C
HA-2620
HA-2600
C
0.01
F
-
-
(NOTE)
HA-2620, HA-2625
5
NOTE: A small load capacitance of at least 30pF (including stray capacitance) is recommended to prevent possible high frequency oscillations.
FIGURE 3. VIDEO AMPLIFIER
Typical Applications
(Continued)
50pF (NOTE)
5pF
+
V
OUT
V
IN
BW = 1MHz
GAIN = 40dB
2.2k
22
HA- 2620
-
Typical Performance Curves
V
S
=
15V, T
A
= 25
o
C, Unless Otherwise Specified
FIGURE 4. INPUT BIAS CURRENT AND OFFSET CURRENT
vs TEMPERATURE
FIGURE 5. BROADBAND NOISE CHARACTERISTICS
FIGURE 6. OPEN LOOP FREQUENCY RESPONSE
FIGURE 7. INPUT IMPEDANCE vs TEMPERATURE, 100Hz
15
10
5
0
-5
-10
-15
-50
-25
0
25
50
75
100
CURRENT (nA)
TEMPERATURE (
o
C)
BIAS
OFFSET
100
10
1
-1
100Hz
1kHz
10kHz
100kHz
1MHz
EQ
UIV
ALENT INPUT NOISE (
V)
10MHz
UPPER 3dB FREQUENCY
LOWER 3dB FREQUENCY = 10Hz
10k
SOURCE
0
SOURCE
THERMAL NOISE OF
EQUIVALENT INPUT
NOISE vs BANDWIDTH
10K RESISTOR
RESISTANCE
RESISTANCE
120
80
20
-20
10Hz
OPEN LOOP V
O
L
T
A
GE GAIN (dB)
FREQUENCY
100
60
40
0
100Hz
1kHz
10kHz 100kHz
1MHz
10MHz 100MHz
GAIN
PHASE
0
100
20
60
180
140
PHASE ANGLE (DEGREES)
TEMPERATURE (
o
C)
0
-35
5
45
105
125
INPUT IMPED
ANCE (M
)
1000
800
600
400
200
-55
25
-15
65
85
HA-2620, HA-2625
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