datasheet for PA51 by Apex Microtechnology

datasheet for PA51 by Apex Microtechnology
PA51PA51
• PA51A
• PA51A
PA51, PA51A
Power Operational Amplifier
FEATURES
•
•
•
•
WIDE SUPPLY RANGE — ±10 to ±40V
HIGH OUTPUT CURRENT — ±10A Peak
CLASS “C” OUTPUT — Low Cost
LOW QUIESCENT CURRENT — 2.6mA
APPLICATIONS
•
•
•
•
DC SERVO AMPLIFIER
MOTOR/SYNCHRO DRIVER
VALVE AND ACTUATOR CONTROL
DC OR AC POWER REGULATOR
8-PIN TO-3
PACKAGE STYLE CE
TYPICAL APPLICATION
C1
DESCRIPTION
The PA51 and PA51A are high voltage, high output current
operational ampliiers designed to drive resistive, inductive and
capacitive loads.Their complementary common emitter output
stage is the simple class C type optimized for low frequency
applications where crossover distortion is not critical. These
ampliiers are not recommended for audio, transducer or delection coil drive circuits. The safe operating area (SOA) is fully
speciied and can be observed for all operating conditions by
selection of user programmable current limiting resistors. Both
ampliiers are internally compensated for all gain settings. For
continuous operation under load, mounting on a heatsink of
proper rating is recommended. Do not use isolation washers!
This hybrid integrated circuit utilizes thick ilm conductors,
ceramic capacitors and semiconductor chips to maximize reliability, minimize size and give top performance. Ultrasonically
bonded aluminum wires provide reliable interconnections at
all operating temperatures. The 8-pin TO-3 package is electrically isolated and hermetically sealed. The use of compressible thermal washers and/or improper mounting torque will
void the product warranty. Please see “General Operating
Considerations”.
The linear relationship of torque output to current input of
the modern torque motor makes this simple control circuit
ideal for many material processing and testing applications.
The sense resistor develops a feedback voltage proportional
to motor current and the small signal properties of the Power
Op Amp insure accuracy. With this closed loop operation, temperature induced impedance variations of the motor winding
are automatically compensated.
EQUIVALENT SCHEMATIC
EXTERNAL CONNECTIONS
R3
+10V
0/+5V
DAC
R1
.1
4.16K
0/6A
PA51
R2
2.5K
R4
M
.1
–28V
MOTOR CURRENT IS A FUNCTION OF VIN
PROGRAMMABLE TORQUE CIRCUIT
N.C.
CL–
3
Q1A
7
8
RCLQ1B
–VS
6
5 –IN
TOP VIEW
2
4
OUTPUT
Q3
OUT
4
A1
R5
.5
1
RCL+
1
2
CL+
+IN
3
+VS
5
Q4
C1
8
Q6A
Q6B
6
www.apexanalog.com
PA51U
Copyright © Apex Microtechnology, Inc. 2012
(All Rights Reserved)
OCT 2012
1
PA51U REVU
PA51 • PA51A
ABSOLUTE MAXIMUM RATINGS
SUPPLY VOLTAGE, +VS to –VS
OUTPUT CURRENT, within SOA
POWER DISSIPATION, internal
INPUT VOLTAGE, differential
INPUT VOLTAGE, common mode
TEMPERATURE, junction1
TEMPERATURE, pin solder -10s
TEMPERATURE RANGE, storage
OPERATING TEMPERATURE RANGE, case
80V
10A
97W
±37V
±VS
200°C
350°C
–65 to +150°C
–55 to +125°C
SPECIFICATIONS
PARAMETER
TEST CONDITIONS 2, 5
INPUT
OFFSET VOLTAGE, initial
OFFSET VOLTAGE, vs. temperature
OFFSET VOLTAGE, vs. supply
OFFSET VOLTAGE, vs. power
BIAS CURRENT, initial
BIAS CURRENT, vs. temperature
BIAS CURRENT, vs. supply
OFFSET CURRENT, initial
OFFSET CURRENT, vs. temperature
INPUT IMPEDANCE, common mode
INPUT IMPEDANCE, differential
INPUT CAPACITANCE
COMMON MODE VOLTAGE RANGE3
COMMON MODE REJECTION, DC3
TC = 25°C
Full temperature range
TC = 25°C
TC = 25°C
TC = 25°C
Full temperature range
TC = 25°C
TC = 25°C
Full temperature range
TC = 25°C
TC = 25°C
TC = 25°C
Full temperature range
TC = 25°C, VCM = ±VS –6V
GAIN
OPEN LOOP GAIN at 10Hz
GAIN BANDWIDTH PRODUCT @ 1MHz
POWER BANDWIDTH
PHASE MARGIN
Full temp. range, full load
TC = 25°C, full load
TC = 25°C, IO = 8A, VO = 40VPP
Full temperature range
OUTPUT
VOLTAGE SWING3
VOLTAGE SWING3
VOLTAGE SWING3
CURRENT
SETTLING TIME to .1%
SLEW RATE
CAPACITIVE LOAD, unity gain
CAPACITIVE LOAD, gain > 4
TC = 25°C, IO = 10A
Full temp. range, IO = 4A
Full temp. range, IO = 68mA
TC = 25°C
TC = 25°C, 2V step
TC = 25°C, RL = 6Ω
Full temperature range
Full temperature range
POWER SUPPLY
VOLTAGE
CURRENT, quiescent
Full temperature range
TC = 25°C
THERMAL
RESISTANCE, AC, junction to case4
RESISTANCE, DC, junction to case
RESISTANCE, junction to air
TEMPERATURE RANGE, case
MIN
PA51
TYP
±VS–6
70
±5
±10
±35
±20
±15
±.05
±.02
±12
±.05
250
10
3
±VS–3
110
94
10
±VS–8
±VS–6
±VS–6
±10
1.0
MIN
PA51A
TYP
*
80
±2
*
*
*
*
*
*
±5
*
*
*
*
*
*
±10
±65
±40
±30
115
1
16
45
*
*
±VS–5
±VS–4
*
*
*
*
2
2.6
*
±10
–25
±28
2.6
±36
10
1.0
1.5
30
1.2
1.8
+85
MAX
UNITS
±8
±40
mV
µV/°C
µV/V
µV/W
nA
nA/°C
nA/V
nA
nA/°C
MΩ
MΩ
pF
V
dB
±30
±10
*
*
*
*
dB
MHz
kHz
°
*
*
V
V
V
A
µs
V/µs
nF
*
*
1.5
SOA
F > 60Hz
F < 60Hz
Meets full range speciications
MAX
*
*
*
–55
±34
*
±40
*
V
mA
*
*
*
*
*
°C/W
°C/W
°C/W
°C
+125
NOTES: * The speciication of PA51A is identical to the speciication for PA51 in applicable column to the left.
1. Long term operation at the maximum junction temperature will result in reduced product life. Derate internal power dissipation to
achieve high MTTF.
2. The power supply voltage speciied under the TYP rating applies unless otherwise noted as a test condition.
3. +VS and –VS denote the positive and negative supply rail respectively. Total VS is measured from +VS to –VS.
4. Rating applies if the output current alternates between both output transistors at a rate faster than 60Hz.
5. Full temperature range speciications are guaranteed but not 100% tested.
CAUTION
2
The internal substrate contains beryllia (BeO). Do not break the seal. If accidentally broken, do not crush, machine, or
subject to temperatures in excess of 850°C to avoid generating toxic fumes.
PA51U
POWER DERATING
OUTPUT VOLTAGE SWING
0
0
120
PA51A
25
50
75
100 125
TEMPERATURE, T (°C)
150
SMALL SIGNAL RESPONSE
6
4.5
2.5
10
100 1K 10K .1M 1M 10M
FREQUENCY, F (Hz)
OPEN LOOP GAIN, AOL (dB)
–210
0
–2
–4
–6
–8
0
DISTORTION (%)
6 8
4
TIME, (s)
2
VS = 36V
RL = 4
GAIN = 10
1W
PO
=.
.3
PO
.1
=
5W
W
PO
.03
100
=
80
60
40
20
0
50
300
1K
3K 10K
FREQUENCY, F (Hz)
30K
1.6
1
10
100 1K 10K .1M
FREQUENCY, F (Hz)
1M
QUIESCENT CURRENT
1.4
1.2
1.0
.8
T C = 125°C
T C = 25°C
°C
TC
=
5
–5
.6
.4
3
2
1
RCL = 0.3
0
25
75 100 125
50
CASE TEMPERATURE, TC (°C)
VS = 40V
50
36
RL = 8
26
19
13
RL = 3
9.7
7
10K
20K 30K
50K 70K .1M
FREQUENCY, F (Hz)
COMMON MODE REJECTION
100
12
HARMONIC DISTORTION
1
PA51U
10
120
4
70
100 1K 10K .1M 1M 10M
FREQUENCY, F (Hz)
10
RCL = .12
POWER RESPONSE
PHASE RESPONSE
1
CURRENT LIMIT
5
0
-25
10
–150
COMMON MODE REJECTION, CMR (dB)
RL = 5
2
.01
30
2
4
6
8
OUTPUT CURRENT, IO (A)
–120
NORMALIZED QUIESCENT CURRENT, IQ (X)
OUTPUT VOLTAGE, VO (V)
GAIN = +1
4
3
0
–90
PULSE RESPONSE
8
10
5 to
=2
C
85°
–180
0
6
TC
0
–60
–20
1
=–
3.0
80
20
TC
3.5
–30
40
C
25°
4.0
100
60
CURRENT LIMIT, ILIM (A)
PA51
20
5.0
OUTPUT VOLTAGE, VO (VP-P)
40
7
20 30 40 50 60 70 80 90
TOTAL SUPPLY VOLTAGE, VS (V)
NORMALIZED BIAS CURRENT, IB (X)
60
5.5
BIAS CURRENT
2.5
2.2
1.9
1.6
1.3
1.0
.7
.4
–50 –25
0
25
50
75
100 125
CASE TEMPERATURE, TC (°C)
100
INPUT NOISE VOLTAGE, VN (nV/ Hz)
80
VOLTAGE DROP FROM SUPPLY (V)
100
PHASE, Ф (°)
INTERNAL POWER DISSIPATION, P (W)
PA51 • PA51A
INPUT NOISE
70
50
40
30
20
10
10
100
1K
10K
FREQUENCY, F (Hz)
.1M
3
PA51 • PA51A
GENERAL
Please read Application Note 1 "General Operating Considerations" which covers stability, supplies, heat sinking,
mounting, current limit, SOA interpretation, and speciication
interpretation. Visit www.apexanalog.com for design tools that
help automate tasks such as calculations for stability, internal
power dissipation, current limit and heat sink selection. The
"Application Notes" and "Technical Seminar" sections contain a
wealth of information on speciic types of applications. Package
outlines, heat sinks, mounting hardware and other accessories
are located in the "Packages and Accessories" section. Evaluation Kits are available for most Apex Microtechnology product
models, consult the "Evaluation Kit" section for details. For the
most current version of all Apex Microtechnology product data
sheets, visit www.apexanalog.com.
SAFE OPERATING AREA (SOA)
The output stage of most power ampliiers has three distinct
limitations:
1. The current handling capability of the transistor geometry
and the wire bonds.
2. The second breakdown effect which occurs whenever the
simultaneous collector current and collector-emitter voltage
exceeds speciied limits.
3. The junction temperature of the output transistors.
SOA
L
T
C
=1
=2
5°C
=8
5°C
25
°C
ady
ste
te
sta
0.7
0.5
C
s
1.0
MA
5m
1.5
T
t=
2.0
C
ER
s
3.0
T
TH
1m
5.0
t=
OUTPUT CURRENT FROM +VS OR – VS (A)
10
7.0
0.3
0.2
±VS
40V
35V
30V
25V
20V
15V
CAPACITIVE LOAD
ILIM = 5A
ILIM = 10A
400µF
200µF
800µF
400µF
1,600µF
800µF
5.0mF
2.5mF
10mF
5.0mF
20mF
10mF
INDUCTIVE LOAD
ILIM = 5A
ILIM = 10A
11mH
4.3mH
20mH
5.0mH
35mH
6.2mH
50mH
15mH
400mH
20mH
**
100mH
* If the inductive load is driven near steady state conditions,
allowing the output voltage to drop more than 8V below the
supply rail with ILIM = 10A or 15V below the supply rail with
ILIM = 5A while the ampliier is current limiting, the inductor
should be capacitively coupled or the current limit must be
lowered to meet SOA criteria.
** Second breakdown effect imposes no limitation but thermal
limitations must still be observed.
2. The ampliier can handle any EMF generating or reactive
load and short circuits to the supply rail or shorts to common
if the current limits are set as follows at TC = 85°C.
±VS
45V
40V
35V
30V
25V
20V
15V
SHORT TO ±VS
C, L, OR EMF LOAD
0.1A
0.2A
0.3A
0.5A
1.2A
1.5A
2.0A
SHORT TO
COMMON
1.3A
1.5A
1.6A
2.0A
2.4A
3.0A
4.0A
These simpliied limits may be exceeded with further analysis
using the operating conditions for a speciic application.
3.The output stage is protected against transient lyback. However, for protection against sustained, high energy lyback,
external fast-recovery diodes should be used.
CURRENT LIMIT
5
15
20
30
40 50
70 80
7
10
SUPPLY TO OUTPUT DIFFERENTIAL VOLTAGE VS – VO (V)
The SOA curves combine the effect of of all limits for this
Power Op Amp. For a given application, the direction and
magnitude of the output current should be calculated or measured and checked against the SOA curves. This is simple
for resistive loads but more complex for reactive and EMF
generating loads. The following guidelines may save extensive
analytical efforts.
4
1. Under transient conditions, capacitive and dynamic* inductive loads up to the following maximums are safe:
Proper operation requires the use of two current limit resistors, connected as shown in the external connection diagram.
The minimum value for RCL is .06 ohm, however for optimum
reliability it should be set as high as possible. Refer to the
“General Operating Considerations” section of the handbook
for current limit adjust details.
PA51U
PA51 • PA51A
NEED TECHNICAL HELP? CONTACT APEX SUPPORT!
For all Apex Microtechnology product questions and inquiries, call toll free 800-546-2739 in North America.
For inquiries via email, please contact [email protected]
International customers can also request support by contacting their local Apex Microtechnology Sales Representative.
To ind the one nearest to you, go to www.apexanalog.com
IMPORTANT NOTICE
Apex Microtechnology, Inc. has made every effort to insure the accuracy of the content contained in this document. However, the information is subject to change
without notice and is provided "AS IS" without warranty of any kind (expressed or implied). Apex Microtechnology reserves the right to make changes without further
notice to any speciications or products mentioned herein to improve reliability. This document is the property of Apex Microtechnology and by furnishing this information, Apex Microtechnology grants no license, expressed or implied under any patents, mask work rights, copyrights, trademarks, trade secrets or other intellectual
property rights. Apex Microtechnology owns the copyrights associated with the information contained herein and gives consent for copies to be made of the information only for use within your organization with respect to Apex Microtechnology integrated circuits or other products of Apex Microtechnology. This consent does not
extend to other copying such as copying for general distribution, advertising or promotional purposes, or for creating any work for resale.
APEX MICROTECHNOLOGY PRODUCTS ARE NOT DESIGNED, AUTHORIZED OR WARRANTED TO BE SUITABLE FOR USE IN PRODUCTS USED FOR
LIFE SUPPORT, AUTOMOTIVE SAFETY, SECURITY DEVICES, OR OTHER CRITICAL APPLICATIONS. PRODUCTS IN SUCH APPLICATIONS ARE UNDERSTOOD TO BE FULLY AT THE CUSTOMER OR THE CUSTOMER’S RISK.
Apex Microtechnology, Apex and Apex Precision Power are trademarks of Apex Microtechnolgy, Inc. All other corporate names noted herein may be trademarks
of their respective holders.
www.apexanalog.com
PA51U
Copyright © Apex Microtechnology, Inc. 2012
(All Rights Reserved)
OCT 20125
PA51U REVU
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