The ELH0021 is a general purpose operational amplifier capa-
ble of delivering large output currents not usually associated
with conventional IC op amps the ELH0021 will provide out-
put currents in excess of 1A at voltage levels of
g
12V In addi-
tion both the inputs and outputs are protected against over-
load The device is compensated with a single external capacitor
and are free of any unusual oscillation or latch-up problems
The excellent input characteristics and high output capability
of the ELH0021 make it an ideal choice for power applications
such as DC servos capstan drivers deflection yoke drivers and
programmable power supplies
Other applications include torque drivers for inertial guidance
systems diddle yoke drivers for alphanumeric CRT displays
cable drivers and programmable power supplies for automatic
test equipment
The ELH0021 is supplied in an 8-pin TO-3 package rated at
20W with suitable heatsink The ELH0021 is guaranteed over
the temperature range of
b
55 C to
a
125 C
Elantec facilities comply with MIL-I-45208A and other applica-
ble quality specifications Elantec’s Military devices are 100%
fabricated and assembled in our rigidly controlled ultra-clean
facilities in Milpitas California For additional information on
Elantec’s Quality and Reliability Assurance policy and proce-
dures request brochure QRA-1
Ordering Information
Part No
Temp Range
Pkg
Outline
ELH0021K 883B
b
55 C to
a
125 C TO-3 MDP0003
8508801YX is the SMD version of this device
Connection Diagram
Equivalent Schematic
0021 – 1
Top View
July 1991 Rev G
0021 – 2
Note
All information contained in this data sheet has been carefully checked and is believed to be accurate as of the date of publication however this data sheet cannot be a ‘‘controlled document’’ Current revisions if any to these
specifications are maintained at the factory and are available upon your request We recommend checking the revision level before finalization of your design documentation Patent pending
CMS 0021DS
1989 Elantec Inc
ELH0021K 883 8508801YX
1 Amp Power Operational Amplifier
Absolute Maximum Ratings
(T
A
e
25 C)
V
S
V
IN
P
D
Supply Voltage
Input Voltage (Note 1)
Power Dissipation (See Curves)
Differential Input Voltage
Peak Output Current (Note 2)
Output Short
Circuit Duration (Note 3)
g
18V
g
15V
T
A
T
ST
g
30V
2A
Continuous
Operating Temperature Range
ELH0021
Storage Temperature
Lead Temperature
(Soldering 10 seconds)
b
55 C to
a
125 C
b
65 C to
a
150 C
300 C
Important Note
All parameters having Min Max specifications are guaranteed The Test Level column indicates the specific device testing actually
performed during production and Quality inspection Elantec performs most electrical tests using modern high-speed automatic test
equipment specifically the LTX77 Series system Unless otherwise noted all tests are pulsed tests therefore T
J
e
T
C
e
T
A
Test Level
I
II
III
IV
V
Test Procedure
100% production tested and QA sample tested per QA test plan QCX0002
100% production tested at T
A
e
25 C and QA sample tested at T
A
e
25 C
T
MAX
and T
MIN
per QA test plan QCX0002
QA sample tested per QA test plan QCX0002
Parameter is guaranteed (but not tested) by Design and Characterization Data
Parameter is typical value at T
A
e
25 C for information purposes only
DC Electrical Characteristics
V
S
e
g
15V
Parameter
Description
T
MIN
s
T
A
s
T
MAX
C
C
e
3000 pF
ELH0021
Test Conditions
Min
Typ
1
Max
3
5
3
5
25
Test
Level
I
I
IV
V
Units
V
OS
Input Offset
Voltage
Voltage Drift
with Temperature
Offset Voltage Drift
with Time
R
S
s
100X T
C
e
25 C (Note 4)
R
S
s
100X (Note 4)
R
S
s
100X
T
A
e
25 C
mV
mV
mV
C
mV
0
wk
DV
OS
DT
DV
OS
DP
Offset Voltage
Change with
Output Power
Input Offset
Current
Offset Current Drift
with Temperature
Offset Current Drift
with Time
T
A
e
25 C
T
C
e
25 C (Note 4)
(Note 4)
T
C
e
25 C (Note 4)
(Note 4)
5
30
15
100
300
I
I
I
IV
V
mV
W
nA
nA
nA C
nA
0
wk
nA
mA
MX
TD is 4 1in
dB
V
I
OS
01
2
100
1
I
B
Input Bias Current
300
1
I
I
I
I
IV
R
IN
CMRR
V
INCM
Input Resistance
Common-Mode
Rejection Ratio
Input Voltage
Range
T
C
e
25 C
R
S
s
100X V
CM
e
g
10V
03
70
g
12
1
90
2
ELH0021K 883 8508801YX
1 Amp Power Operational Amplifier
DC Electrical Characteristics
V
S
e
g
15V
Parameter
Description
Test Conditions
Min
PSRR
A
VOL
Power Supply
Rejection Ratio
Voltage Gain
(Note 5)
Output Voltage
Swing
Output Short
Circuit Current
Supply Current
Power
Consumption
1
2
3
4
5
R
S
s
100X V
S
e
g
5V to
g
15V
V
O
e
g
10V R
L
e
1 kX T
C
e
25 C
V
O
e
g
10V R
L
e
100X
R
L
e
100X
R
L
e
10X T
C
e
25 C
T
C
e
25 C R
SC
e
0 5X
V
OUT
e
0V
V
OUT
e
0V
80
100
25
g
13 5
g
11
T
MIN
s
T
A
s
T
MAX
C
C
e
3000 pF
ELH0021
Typ
96
200
Max
Contd
Test
Level
I
I
I
Units
dB
V mV
V mV
V
V
A
mA
mW
TD is 2 4in
TD is 3 2in
V
O
14
g
12
I
I
16
35
105
I
I
I
I
SC
I
S
P
C
Note
Note
Note
Note
Note
08
12
25
75
Rating applies for supply voltages above
g
15V For supplies less than
g
15V rating is equal to supply voltage
Rating applies for ELH0021K with R
SC
e
0X
Rating applies as long as package power rating is not exceeded
Specifications apply for
g
5V
s
V
S
s g
18V
The ELH0021 like all Class B amplifiers has a ‘‘dead band’’ when V
OUT
is near 0V Typical values for the ‘‘dead band’’ are
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