1
File Number
3403.3
ICL7621, ICL7641, ICL7642
Dual/Quad, Low Power CMOS Operational
Amplifiers
The ICL761X/762X/764X series is a family of monolithic
CMOS operational amplifiers. These devices provide the
designer with high performance operation at low supply
voltages and selectable quiescent currents. They are an
ideal design tool when ultra low input current and low power
dissipation are desired.
The basic amplifier will operate at supply voltages ranging
from
1V to
8V, and may be operated from a single Lithium
cell. The output swing ranges to within a few millivolts of the
supply voltages.
The quiescent supply current of these amplifiers is set to 3
different ranges at the factory. Both amps of the dual
ICL7621 are set to an I
Q
of 100
A, while each amplifier of
the quad ICL7641 and ICL7642 are set to an I
Q
of 1mA and
10
A respectively. This results in power consumption as low
as 20
W per amplifier.
Of particular significance is the extremely low (1pA) input
current, input noise current of 0.01pA/
Hz, and 10
12
input
impedance. These features optimize performance in very
high source impedance applications.
The inputs are internally protected. Outputs are fully
protected against short circuits to ground or to either supply.
AC performance is excellent, with a slew rate of 1.6V/
s, and
unity gain bandwidth of 1MHz at I
Q
= 1mA.
Because of the low power dissipation, junction temperature
rise and drift are quite low. Applications utilizing these
features may include stable instruments, extended life
designs, or high density packages.
Features
Wide Operating Voltage Range . . . . . . . . . . .
1V to
8V
High Input Impedance . . . . . . . . . . . . . . . . . . . . . . .10
12
Input Current Lower Than BIFETs . . . . . . . . . . . 1pA (Typ)
Output Voltage Swing . . . . . . . . . . . . . . . . . . . . V+ and V-
Available as Duals and Quads (Refer to ICL7611 for Singles)
Low Power Replacement for Many Standard Op Amps
Applications
Portable Instruments
Telephone Headsets
Hearing Aid/Microphone Amplifiers
Meter Amplifiers
Medical Instruments
High Impedance Buffers
Pinouts
ICL7621 (PDIP, SOIC)
TOP VIEW
ICL7621 (METAL CAN)
TOP VIEW
ICL7641 (PDIP), ICL7642 (PDIP)
TOP VIEW
Ordering Information
PART NUMBER
TEMP.
RANGE (
o
C)
PACKAGE
PKG.
NO.
ICL7621ACPA
0 to 70
8 Ld PDIP -
A Grade - I
Q
= 100
A
E8.3
ICL7621BCPA
0 to 70
8 Ld PDIP -
B Grade - I
Q
= 100
A
E8.3
ICL7621DCPA
0 to 70
8 Ld PDIP -
D Grade - I
Q
= 100
A
E8.3
ICL7621AMTV
-55 to 125
8 Pin Metal Can -
A Grade - I
Q
= 100
A
T8.C
ICL7621DCBA
0 to 70
8 Ld SOIC -
D Grade - I
Q
= 100
A
M8.15
ICL7621DCBA-T
0 to 70
8 Ld SOIC - D Grade -
Tape and Reel -
I
Q
= 100
A
M8.15
ICL7641ECPD
0 to 70
14 Ld PDIP - E Grade -
I
Q
= 1mA
E14.3
ICL7642ECPD
0 to 70
14 Ld PDIP - E Grade -
I
Q
= 10
A
E14.3
OUT
A
-IN
A
+IN
A
V-
1
2
3
4
8
7
6
5
V+
OUT
B
-IN
B
+IN
B
+
-
+
-
V+
-IN
B
-IN
A
V-
OUT
A
+IN
A
OUT
B
+IN
B
+
-
+
-
8
7
1
2
3
4
5
6
OUT
A
-IN
A
+IN
A
V+
+IN
B
-IN
B
OUT
B
OUT
D
-IN
D
+IN
D
V-
+IN
C
-IN
C
OUT
C
1
2
3
4
5
6
7
14
13
12
11
10
9
8
+
-
+
-
+
-
+
-
Data Sheet
April 1999
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
http://www.intersil.com or 407-727-9207
|
Copyright
Intersil Corporation 1999
2
Absolute Maximum Ratings
Thermal Information
Supply Voltage V+ to V- . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18V
Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . V- -0.3 to V+ +0.3V
Differential Input Voltage (Note 1) . . . . . . . . . [(V+ +0.3) - (V- -0.3)]V
Duration of Output Short Circuit (Note 2). . . . . . . . . . . . . . Unlimited
Operating Conditions
Temperature Range
ICL76XXM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -55
o
C to 125
o
C
ICL76XXC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0
o
C to 70
o
C
Thermal Resistance (Typical, Note 3)
JA
(
o
C/W)
JC
(
o
C/W)
SOIC Package . . . . . . . . . . . . . . . . . . .
160
N/A
Metal Can Package . . . . . . . . . . . . . . .
160
75
8 Lead PDIP Package . . . . . . . . . . . . .
120
N/A
14 Lead PDIP Package . . . . . . . . . . . .
80
N/A
Maximum Junction Temperature (Hermetic Packages). . . . . . . .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.
NOTES:
1. Long term offset voltage stability will be degraded if large input differential voltages are applied for long periods of time.
2. The outputs may be shorted to ground or to either supply, for V
SUPPLY
10V. Care must be taken to insure that the dissipation rating is not
exceeded.
3.
JA
is measured with the component mounted on an evaluation PC board in free air.
Electrical Specifications
V
SUPPLY
=
5V, Unless Otherwise Specified
PARAMETER
SYMBOL
TEST
CONDITIONS
TEMP.
(
o
C)
ICL7621A
ICL7621B
ICL7621D
UNITS
MIN
TYP MAX MIN
TYP MAX MIN
TYP
MAX
Input Offset Voltage
V
OS
R
S
100k
25
-
-
2
-
-
5
-
-
15
mV
Full
-
-
3
-
-
7
-
-
20
mV
Temperature
Coefficient of V
OS
V
OS
/
T R
S
100k
-
-
10
-
-
15
-
-
25
-
V/
o
C
Input Offset Current
I
OS
25
-
0.5
30
-
0.5
30
-
0.5
30
pA
0 to 70
-
-
300
-
-
300
-
-
300
pA
-55 to 125
-
-
800
-
800
-
800
pA
Input Bias Current
I
BIAS
25
-
1.0
50
-
1.0
50
-
1.0
50
pA
0 to 70
-
-
400
-
-
400
-
-
400
pA
-55 to 125
-
-
4000
-
-
4000
-
-
4000
pA
Common Mode Voltage
Range
V
CMR
I
Q
= 100
A
25
4.2
-
-
4.2
-
-
4.2
-
-
V
Output Voltage Swing
V
OUT
I
Q
= 100
A,
R
L
= 100k
25
4.9
-
-
4.9
-
-
4.9
-
-
V
0 to 70
4.8
-
-
4.8
-
-
4.8
-
-
V
-55 to 125
4.5
-
-
4.5
-
-
4.5
-
-
V
Large Signal
Voltage Gain
A
VOL
V
O
=
4.0V,
R
L
= 100k
,
I
Q
= 100
A
25
86
102
-
80
102
-
80
102
-
dB
0 to 70
80
-
-
75
-
-
75
-
-
dB
-55 to 125
74
-
-
68
-
-
68
-
-
dB
Unity Gain Bandwidth
GBW
I
Q
= 100
A
25
-
0.48
-
-
0.48
-
-
0.48
-
MHz
Input Resistance
R
IN
25
-
10
12
-
-
10
12
-
-
10
12
-
Common Mode
Rejection Ratio
CMRR
R
S
100k
,
I
Q
= 100
A
25
76
91
-
70
91
-
70
91
-
dB
Power Supply
Rejection Ratio
(V
SUPPLY
=
8V to
2V)
PSRR
R
S
100k
,
I
Q
= 100
A
25
80
86
-
80
86
-
80
86
-
dB
Input Referred Noise
Voltage
e
N
R
S
= 100
,
f = 1kHz
25
-
100
-
-
100
-
-
100
-
nV/
Hz
Input Referred Noise
Current
i
N
R
S
= 100
,
f = 1kHz
25
-
0.01
-
-
0.01
-
-
0.01
-
pA/
Hz
Supply Current
(Per Amplifier)
I
SUPPLY
No Signal, No Load,
I
Q
= 100
A
25
-
0.1
0.25
-
0.1
0.25
-
0.1
0.25
mA
ICL7621, ICL7641, ICL7642
3
Channel
Separation
V
O1
/V
O2
A
V
= 100
25
-
120
-
-
120
-
-
120
-
dB
Slew Rate
SR
A
V
= 1, C
L
= 100pF,
V
IN
= 8V
P-P
,
I
Q
= 100
A,
R
L
= 100k
25
-
0.16
-
-
0.16
-
-
0.16
-
V/
s
Rise Time
t
R
V
IN
= 50mV,
C
L
= 100pF,
I
Q
= 100
A,
R
L
= 100k
25
-
2
-
-
2
-
-
2
-
s
Overshoot
Factor
OS
V
IN
= 50mV,
C
L
= 100pF,
I
Q
= 100
A,
R
L
= 100k
25
-
10
-
-
10
-
-
10
-
%
Electrical Specifications
V
SUPPLY
=
5V, Unless Otherwise Specified (Continued)
PARAMETER
SYMBOL
TEST
CONDITIONS
TEMP.
(
o
C)
ICL7621A
ICL7621B
ICL7621D
UNITS
MIN
TYP MAX MIN
TYP MAX MIN
TYP
MAX
Electrical Specifications
V
SUPPLY
=
5V, Unless Otherwise Specified
PARAMETER
SYMBOL
TEST
CONDITIONS
TEMP.
(
o
C)
ICL7641E, ICL7642E
UNITS
MIN
TYP
MAX
Input Offset Voltage
V
OS
R
S
100k
25
-
-
20
mV
Full
-
-
25
mV
Temperature Coefficient of V
OS
V
OS
/
T
R
S
100k
-
-
30
-
V/
o
C
Input Offset Current
I
OS
25
-
0.5
30
pA
0 to 70
-
-
300
pA
-55 to 125
-
800
pA
Input Bias Current
I
BIAS
25
-
1.0
50
pA
0 to 70
-
-
500
pA
-55 to 125
-
-
4000
pA
Common Mode Voltage Range
V
CMR
I
Q
= 10
A, ICL7642
25
4.4
-
-
V
I
Q
= 1mA, ICL7641
25
3.7
-
-
V
Output Voltage Swing
V
OUT
ICL7642, I
Q
= 10
A, R
L
= 1M
25
4.9
-
-
V
0 to 70
4.8
-
-
V
-55 to 125
4.7
-
-
V
ICL7641, I
Q
= 1mA, R
L
= 10k
25
4.5
-
-
V
0 to 70
4.3
-
-
V
-55 to 125
4.0
-
-
V
Large Signal Voltage Gain
A
VOL
ICL7642, V
O
=
4V, R
L
= 1M
,
I
Q
= 10
A
25
80
104
-
dB
0 to 70
75
-
-
dB
-55 to 125
68
-
-
dB
ICL7641, V
O
=
4V, R
L
= 10k
, I
Q
= 1mA
25
76
98
-
dB
0 to 70
72
-
-
dB
-55 to 125
68
-
-
dB
Unity Gain Bandwidth
GBW
ICL 7642, I
Q
= 10
A
25
-
0.044
-
MHz
ICL 7641, I
Q
= 1mA
25
-
1.4
-
MHz
Input Resistance
R
IN
25
-
10
12
-
Common Mode Rejection Ratio
CMRR
ICL7642, R
S
100k
,
I
Q
= 10
A
25
70
96
-
dB
ICL7641, R
S
100k
,
I
Q
= 1mA
25
60
87
-
dB
Power Supply Rejection Ratio
(V
SUPPLY
=
8V to
2V)
PSRR
ICL7642, R
S
100k
,
I
Q
= 10
A
25
80
94
-
dB
ICL7641, R
S
100k
,
I
Q
= 1mA
25
70
77
-
dB
ICL7621, ICL7641, ICL7642
4
Schematic Diagram
Application Information
Static Protection
All devices are static protected by the use of input diodes.
However, strong static fields should be avoided, as it is
possible for the strong fields to cause degraded diode
junction characteristics, which may result in increased input
leakage currents.
Latchup Avoidance
Junction-isolated CMOS circuits employ configurations
which produce a parasitic 4-layer (PNPN) structure. The
4-layer structure has characteristics similar to an SCR, and
under certain circumstances may be triggered into a low
impedance state resulting in excessive supply current. To
avoid this condition, no voltage greater than 0.3V beyond the
supply rails may be applied to any pin. In general, the op
amp supplies must be established simultaneously with, or
before any input signals are applied. If this is not possible,
the drive circuits must limit input current flow to 2mA to
prevent latchup.
Input Referred Noise Voltage
e
N
R
S
= 100
, f = 1kHz
25
-
100
-
nV/
Hz
Input Referred Noise Current
i
N
R
S
= 100
, f = 1kHz
25
-
0.01
-
pA/
Hz
Supply Current (Per Amplifier)
(No Signal, No Load)
I
SUPPLY
ICL7642, I
Q
= 10
A Low Bias
25
-
0.01
0.03
mA
ICL7641, I
Q
= 1mA High Bias
25
-
1.0
2.5
mA
Channel Separation
V
O1
/V
O2
A
V
= 100
25
-
120
-
dB
Slew Rate (A
V
= 1, C
L
= 100pF,
V
IN
= 8V
P-P
)
SR
ICL7642, I
Q
= 10
A, R
L
= 1M
25
-
0.016
-
V/
s
ICL7641, I
Q
= 1mA, R
L
= 10k
25
-
1.6
-
V/
s
Rise Time
(V
IN
= 50mV, C
L
= 100pF)
t
R
ICL7642, I
Q
= 10
A, R
L
= 1M
25
-
20
-
s
ICL7641, I
Q
= 1mA, R
L
= 10k
25
-
0.9
-
s
Overshoot Factor
(V
IN
= 50mV, C
L
= 100pF)
OS
ICL7642, I
Q
= 10
A, R
L
= 1M
25
-
5
-
%
ICL7641, I
Q
= 1mA, R
L
= 10k
25
-
40
-
%
Electrical Specifications
V
SUPPLY
=
5V, Unless Otherwise Specified (Continued)
PARAMETER
SYMBOL
TEST
CONDITIONS
TEMP.
(
o
C)
ICL7641E, ICL7642E
UNITS
MIN
TYP
MAX
INPUT STAGE
SETTING STAGE
I
Q
OUTPUT STAGE
V+
OUTPUT
V-
Q
N11
Q
N10
Q
N9
C
FF
= 9pF
C
C
= 33pF
Q
P9
Q
P8
Q
P7
Q
P6
6.3V
Q
N7
Q
N6
Q
N5
Q
N4
Q
N8
Q
N3
Q
N1
Q
N2
Q
P1
Q
P2
3K
3K
100K
900K
Q
P5
Q
P4
Q
P3
+INPUT
-INPUT
V-
V-
V+
V+
A
C
V-
G
E
V+
TABLE OF JUMPERS
I
Q
ICL7621
C, E
100
A
ICL7641
C, G
1mA
ICL7642
A, E
10
A
6.3V
ICL7621, ICL7641, ICL7642
5
Choosing the Proper I
Q
Each device in the ICL76XX family has a similar I
Q
setup
scheme, which allows the amplifier to be set to nominal
quiescent currents of 10
A, 100
A or 1mA. These current
settings change only very slightly over the entire supply
voltage range. The ICL7611/12 have an external I
Q
control
terminal, permitting user selection of each amplifiers'
quiescent current. The ICL7621 and ICL7641/7642 have
fixed I
Q
settings:
ICL7621 (Dual) - I
Q
= 100
A
ICL7641 (Quad) - I
Q
= 1mA
ICL7642 (Quad) - I
Q
= 10
A
NOTE: The output current available is a function of the
quiescent current setting. For maximum peak-to-peak output
voltage swings into low impedance loads, I
Q
of 1mA should
be selected.
Output Stage and Load Driving Considerations
Each amplifiers' quiescent current flows primarily in the
output stage. This is approximately 70% of the I
Q
settings.
This allows output swings to almost the supply rails for
output loads of 1M
, 100k
, and 10k
, using the output
stage in a highly linear class A mode. In this mode,
crossover distortion is avoided and the voltage gain is
maximized. However, the output stage can also be operated
in Class AB for higher output currents. (See graphs under
Typical Operating Characteristics). During the transition from
Class A to Class B operation, the output transfer
characteristic is nonlinear and the voltage gain decreases.
Frequency Compensation
The ICL76XX are internally compensated, and are stable
for closed loop gains as low as unity with capacitive loads
up to 100pF.
Operation At V
SUPPLY
=
1V
Operation at V
SUPPLY
=
1V is guaranteed for the
ICL7642C only.
Output swings to within a few millivolts of the supply rails are
achievable for R
L
1M
. Guaranteed input CMVR is
0.6V
minimum and typically +0.9V to -0.7V at V
SUPPLY
=
1V. For
applications where greater common mode range is
desirable, refer to the ICL7612 data sheet.
Typical Applications
The user is cautioned that, due to extremely high input
impedances, care must be exercised in layout, construction,
board cleanliness, and supply filtering to avoid hum and
noise pickup.
Note that in no case is I
Q
shown. The value of I
Q
must be
chosen by the designer with regard to frequency response
and power dissipation.
FIGURE 1. SIMPLE FOLLOWER
FIGURE 2. LEVEL DETECTOR
FIGURE 3. PHOTOCURRENT INTEGRATOR
FIGURE 4. TRIANGLE/SQUARE WAVE GENERATOR
ICL76XX
+
-
V
IN
V
OUT
R
L
10k
ICL76XX
+
-
V
IN
V
OUT
100k
+5
+5
1M
TO CMOS OR
LPTTL LOGIC
V
OUT
1
F
ICL76XX
+
-
+
NOTE: Low leakage currents allow integration times up to
several hours.
1M
+
-
1M
DUTY CYCLE
V-
V+
680k
1M
WAVEFORM GENERATOR
+
-
1/2
ICL7621
1/2
ICL7621
NOTE: Since the output range swings exactly from rail to rail, fre-
quency and duty cycle are virtually independent of power supply
variations.
ICL7621, ICL7641, ICL7642
6
FIGURE 5. AVERAGING AC TO DC CONVERTER FOR A/D
CONVERTERS SUCH AS ICL7106, ICL7107,
ICL7109, ICL7116, ICL7117
FIGURE 6. BURN-IN AND LIFE TEST CIRCUIT
FIGURE 7. FIFTH ORDER CHEBYCHEV MULTIPLE FEEDBACK LOW PASS FILTER
10
F
1/2
+
-
20k
V
IN
20k
V
OH
V
OL
1M
2.2M
COMMON
10k
0.5
F
1.8k = 5%
SCALE
ADJUST
TO
SUCCEEDING
INPUT
STAGE
+
-
ICL7621
1/2
ICL7621
+
-
V-
OUT
V+
V+
-8V
+8V
T
A
= 125
o
C
+
-
+
-
INPUT
30k
160k
0.2
F
0.2
F
0.2
F
0.2
F
0.1
F
0.1
F
51k
100k
680k
360k
360k
1M
1M
OUTPUT
1/2
ICL7621
1/2
ICL7621
NOTE 4
NOTE 4
NOTES:
4. Small capacitors (25 - 50pF) may be needed for stability in some cases.
5. The low bias currents permit high resistance and low capacitance values to be used to achieve low frequency cutoff. f
C
= 10Hz, AV
CL
= 4,
Passband ripple = 0.1dB.
Typical Performance Curves
FIGURE 8. SUPPLY CURRENT PER AMPLIFIER vs SUPPLY
VOLTAGE
FIGURE 9. SUPPLY CURRENT PER AMPLIFIER vs FREE-AIR
TEMPERATURE
10K
1K
100
10
1
SUPPL
Y CURRENT (
A)
0
2
4
6
8
10
12
14
16
SUPPLY VOLTAGE (V)
T
A
= 25
o
C
NO LOAD
NO SIGNAL
I
Q
= 1mA
I
Q
= 100
A
I
Q
= 1mA
I
Q
= 10
A
10
4
10
3
10
2
10
1
SUPPL
Y CURRENT (
A)
-50
-25
0
25
50
75
100
125
FREE-AIR TEMPERATURE (
o
C)
V+ - V- = 10V
NO LOAD
NO SIGNAL
I
Q
= 1mA
I
Q
= 100
A
I
Q
= 10
A
ICL7621, ICL7641, ICL7642
7
FIGURE 10. INPUT BIAS CURRENT vs TEMPERATURE
FIGURE 11. LARGE SIGNAL DIFFERENTIAL VOLTAGE GAIN
vs FREE-AIR TEMPERATURE
FIGURE 12. LARGE SIGNAL FREQUENCY RESPONSE
FIGURE 13. COMMON MODE REJECTION RATIO vs FREE-AIR
TEMPERATURE
FIGURE 14. POWER SUPPLY REJECTION RATIO vs FREE-AIR
TEMPERATURE
FIGURE 15. EQUIVALENT INPUT NOISE VOLTAGE vs
FREQUENCY
Typical Performance Curves
(Continued)
-50
-25
0
25
50
75
100
125
FREE-AIR TEMPERATURE (
o
C)
1000
100
10
1.0
0.1
INPUT BIAS CURRENT (pA)
V
S
=
5V
-50
-25
0
25
50
75
100
125
FREE-AIR TEMPERATURE (
o
C)
-75
1000
100
10
1
DIFFERENTIAL V
O
L
T
A
GE GAIN (kV/V)
V
SUPPLY
= 10V
V
OUT
= 8V
R
L
= 100k
I
Q
= 100
A
R
L
= 10k
I
Q
= 1mA
R
L
= 1M
I
Q
= 10
A
10
7
10
6
10
4
10
3
10
2
10
1
10
5
DIFFERENTIAL V
O
L
T
A
GE GAIN (V/V)
0.1
1.0
10
100
1K
10K
100K
1M
FREQUENCY (Hz)
T
A
= 25
o
C
V
SUPPLY
= 15V
0
45
90
135
180
PHASE SHIFT (DEGREES)
I
Q
= 1mA
I
Q
= 100
A
PHASE SHIFT
(I
Q
= 1mA)
I
Q
= 10
A
-50
-25
0
25
50
75
100
125
FREE-AIR TEMPERATURE (
o
C)
-75
105
100
95
90
85
80
75
70
COMMON MODE REJECTION RA
TIO (dB)
V
SUPPLY
= 10V
I
Q
= 10
A
I
Q
= 100
A
I
Q
= 1mA
100
95
90
85
80
75
70
65
SUPPL
Y V
O
L
T
A
GE REJECTION RA
TIO (dB)
-50
-25
0
25
50
75
100
125
-75
FREE-AIR TEMPERATURE (
o
C)
I
Q
= 1mA
I
Q
= 100
A
I
Q
= 10
A
V
SUPPLY
= 10V
600
500
400
300
200
100
0
EQ
UIV
ALENT INPUT NOISE V
O
L
T
A
GE (nV/
Hz)
10
100
1K
10K
100K
FREQUENCY (Hz)
T
A
= 25
o
C
3V
V
SUPPLY
16V
ICL7621, ICL7641, ICL7642
8
FIGURE 16. OUTPUT VOLTAGE vs FREQUENCY
FIGURE 17. OUTPUT VOLTAGE vs FREQUENCY
FIGURE 18. OUTPUT VOLTAGE vs SUPPLY VOLTAGE
FIGURE 19. OUTPUT VOLTAGE vs FREE-AIR TEMPERATURE
FIGURE 20. OUTPUT SOURCE CURRENT vs SUPPLY VOLTAGE
FIGURE 21. OUTPUT SINK CURRENT vs SUPPLY VOLTAGE
Typical Performance Curves
(Continued)
16
14
12
10
8
6
4
2
0
MAXIMUM PEAK-T
O-PEAK
OUTPUT V
O
L
T
A
GE (V
P-P
)
100
1K
10K
100K
1M
10M
FREQUENCY (Hz)
V
SUPPLY
=
8V
V
SUPPLY
=
5V
V
SUPPLY
=
2V
I
Q
= 1mA
I
Q
= 10
A
I
Q
= 100
A
T
A
= 25
o
C
V
SUPPLY
= 10V
I
Q
= 1mA
16
14
12
10
8
6
4
2
0
MAXIMUM PEAK-T
O-PEAK
OUTPUT V
O
L
T
A
GE (V
P-P
)
10K
100K
1M
10M
FREQUENCY (Hz)
T
A
= -55
o
C
T
A
= 25
o
C
T
A
= 125
o
C
16
14
12
10
8
6
4
MAXIMUM PEAK-T
O-PEAK
OUTPUT V
O
L
T
A
GE (V
P-P
)
2
4
6
8
10
12
14
16
SUPPLY VOLTAGE (V)
T
A
= 25
o
C
R
L
= 100k
- 1M
R
L
= 10k
12
10
8
6
4
2
0
MAXIMUM PEAK-T
O-PEAK
OUTPUT V
O
L
T
A
GE (V
P-P
)
-75
-50
-25
0
25
50
75
100
125
FREE-AIR TEMPERATURE (
o
C)
R
L
= 100k
R
L
= 10k
R
L
= 2k
V
SUPPLY
= 10V
I
Q
= 1mA
40
30
20
10
0
MAXIMUM OUTPUT SOURCE CURRENT (mA)
0
2
4
6
8
10
12
14
16
SUPPLY VOLTAGE (V)
I
Q
= 1mA
0.01
0.1
1.0
10
MAXIMUM OUTPUT SINK CURRENT (mA)
0
2
4
6
8
10
12
14
16
SUPPLY VOLTAGE (V)
I
Q
= 10
A
I
Q
= 100
A
I
Q
= 1mA
ICL7621, ICL7641, ICL7642
9
All Intersil semiconductor products are manufactured, assembled and tested under ISO9000 quality systems certification.
Intersil semiconductor products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design and/or specifications at any time with-
out 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 web site http://www.intersil.com
Sales Office Headquarters
NORTH AMERICA
Intersil Corporation
P. O. Box 883, Mail Stop 53-204
Melbourne, FL 32902
TEL: (407) 724-7000
FAX: (407) 724-7240
EUROPE
Intersil SA
Mercure Center
100, Rue de la Fusee
1130 Brussels, Belgium
TEL: (32) 2.724.2111
FAX: (32) 2.724.22.05
ASIA
Intersil (Taiwan) Ltd.
7F-6, No. 101 Fu Hsing North Road
Taipei, Taiwan
Republic of China
TEL: (886) 2 2716 9310
FAX: (886) 2 2715 3029
FIGURE 22. OUTPUT VOLTAGE vs LOAD RESISTANCE
FIGURE 23. VOLTAGE FOLLOWER LARGE SIGNAL PULSE
RESPONSE (I
Q
= 1mA)
FIGURE 24. VOLTAGE FOLLOWER LARGE SIGNAL PULSE
RESPONSE (I
Q
= 100
A)
FIGURE 25. VOLTAGE FOLLOWER LARGE SIGNAL PULSE
RESPONSE (I
Q
= 10
A)
Typical Performance Curves
(Continued)
16
14
12
10
8
6
4
2
0
MAXIMUM PEAK-T
O-PEAK
OUTPUT V
O
L
T
A
GE (V
P-P
)
0.1
1.0
10
100
LOAD RESISTANCE (k
)
V+ - V- = 10V
I
Q
= 1mA
T
A
= 25
o
C
8
6
4
2
0
-2
-4
-6
INPUT AND OUTPUT V
O
L
T
A
GE (V)
0
2
4
6
8
10
12
TIME (
s)
T
A
= 25
o
C, V
SUPPLY
= 10V
R
L
= 10k
, C
L
= 100pF
OUTPUT
INPUT
8
6
4
2
0
-2
-4
-6
INPUT AND OUTPUT V
O
L
T
A
GE (V)
0
20
40
60
80
100
120
TIME (
s)
T
A
= 25
o
C, V
SUPPLY
= 10V
R
L
= 100k
, C
L
= 100pF
OUTPUT
INPUT
8
6
4
2
0
-2
-4
-6
INPUT AND OUTPUT V
O
L
T
A
GE (V)
0
200
400
600
800
1000
1200
TIME (
s)
T
A
= 25
o
C, V
SUPPLY
= 10V
R
L
= 1M
, C
L
= 100pF
OUTPUT
INPUT
ICL7621, ICL7641, ICL7642
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