CIRRUS PA52

PA52PA52
• PA52A
• PA52A
P r o d u c t IPA52A
Innnnoovvaa t i o n FFr roomm
PA52,
Power Operational Amplifiers
FEATURES
• HIGH INTERNAL DISSIPATION — 400 Watts
• HIGH CURRENT — 40A Continuous, 80A PEAK
• HIGH SLEW RATE — 50V/µs
• OPTIONAL BOOST VOLTAGE INPUTS
APPLICATIONS
• SEMI-CONDUCTOR TESTING
12-pin DIP
PACKAGE STYLE CR
DESCRIPTION
The PA52 is a MOSFET power operational amplifier that
extends the performance limits of power amplifiers in slew
rate and power bandwidth, while maintaining high current and
power dissipation ratings.
Boost voltage inputs allow the small signal portion of the
amplifier to operate at a higher voltage than the high current
output stage. The amplifier is then biased to achieve close
linear swings to the supply rails at high currents for extra efficient operation.
The JEDEC MO-127 12-pin Power Dip™ package (see
Package Outlines) is hermetically sealed and isolated from
the internal circuits. The use of compressible thermal washers
and/or improper mounting torque will void the product warranty.
Please see “General Operating Considerations”.
EXTERNAL CONNECTIONS
EQUIVALENT SCHEMATIC
-Vb
–IN
+IN
http://www.cirrus.com
12
2
11
+Vs
9
+Vs
3
-Vs
4
-OUT
5
8
6
7
Copyright © Cirrus Logic, Inc. 2009
(All Rights Reserved)
TOP
VIEW
+Vb
10
-Vs
-OUT
PA52U
1
+OUT
+OUT
MAY 20091
APEX − PA52UREVG
PA52 • PA52A
SUPPLY VOLTAGE, +VS to –VS
BOOST VOLTAGE, +Vb to -Vb
OUTPUT CURRENT, within SOA
POWER DISSIPATION, internal
INPUT VOLTAGE, differential
INPUT VOLTAGE, common mode
TEMPERATURE, pin solder - 10s
TEMPERATURE, junction2
TEMPERATURE, storage
OPERATING TEMPERATURE RANGE, case
INPUT
OFFSET VOLTAGE, initial
OFFSET VOLTAGE, vs. temperature
OFFSET VOLTAGE, vs. supply
BIAS CURRENT, initial
BIAS CURRENT vs. supply
OFFSET CURRENT, initial
INPUT IMPEDANCE, DC
IMPUT CAPACITANCE
COMMON MODE VOLTAGE RANGE
Full temperature range
COMMON MODE REJECTION,DC
INPUT NOISE
Full temp, range, VCM= ±20V
100KHZ BW, Rs=1KΩ
GAIN
OPEN LOOP,@ 15Hz
GAIN BANDWIDTH PRODUCT
POWER BANDWIDTH
OUTPUT
VOLTAGE SWING
VOLTAGE SWING, PA52
VOLTAGE SWING, PA52A
CURRENT, peak
SETTLING TIME TO.1%
SLEW RATE
RESISTANCE
POWER SUPPLY
VOLTAGE, ±VBOOST
VOLTAGE, ±VS
CURRENT,quiescent, boost supply
CURRENT, quiescent, total
THERMAL
RESISTANCE,AC,junction to case3
RESISTANCE,DC,junction to case
RESISTANCE, junction to air
TEMPERATURE RANGE, case
MIN
Full temperature range
Full temperature range
RL=10Ω
RL=4Ω, Vo=180VP-P, Av=-10
Full temperature range
-VB +12
+VB -14
90
94
MAX
MIN
5
20
10
10
.01
10
10"
13
10
50
30
50
50
100
10
102
3
90
Io=40A
±VBOOST=±VS±10V, Io=40A
±VBOOST=±VS±10V, Io=50A
3ms 10% Duty Cycle
AV= -10,10V STEP,RL=4Ω
AV=-10
IO=0, NO LOAD, 2MHZ
±VS
±VS
Full temperature range
Full temperature range
+14, -12
±3
Full temperature range, F>60HZ
Full temperature range, F>60HZ
Full temperature range
Meets full range specification
PA52
TYP
9.5 ±VS 8.0
5.8 ±VS 4.0
80
50
-25
1
2.5
±30
26
30
.2
.25
12
PA52A
TYP
MAX UNITS
2
5
*
*
*
*
*
*
*
*
*
*
*
mV
µV/°V
µV/V
pA
pA/V
pA
Ω
pF
*
*
*
*
V
dB
µVrms
*
*
*
*
dB
MHz
kHz
*
*
±VS 5.8 ±VS 5.0
*
*
*
*
V
V
V
A
µs
V/µs
Ω
±
TEST CONDITIONS1
±
±
PARAMETER
200V
230V
80A
400W
±20V
±Vb
300°C
150°C
–65 to +150°C
–55 to +125°C
±
SPECIFICATIONS
±
±
ABSOLUTE MAXIMUM RATINGS
P r o d u c t I n n o v a t i o nF r o m
±115
*
*
±100
*
32
*
36
*
*
*
*
*
.25
*
*
.31
*
*
*
85
*
*
V
V
mA
mA
°C/W
°C/W
°C/W
°C
NOTES: *
1.
2.
The specification of PA52A is identical to the specification for PA52 in applicable column to the left
Unless otherwise noted: TC = 25°C, DC input specifications are ± value given. Power supply voltage is typical rating.
±VBOOST = ±VS.
Long term operation at the maximum junction temperature will result in reduced product life. Derate internal power dissipation to
achieve high MTTF. For guidance, refer to the heatsink data sheet.
3. Rating applies if the output current alternates between both output transistors at a rate faster than 60 Hz.
CAUTION
The PA52 is constructed from MOSFET transistors. ESD handling procedures must be observed.
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.
2
PA52U
PA52 • PA52A
T = TC
200
100
25
50
75
TEMPERATURE, T (°C)
SMALL SIGNAL GAIN
80
40
0
COMMON MODE REJECTION, CMR (dB)
100
10
40
20
0
10
80
60
40
20
PA52U
10M
–90
–135
1M
OUTPUT VOLTAGE SWING
10
8
6
= VS
T
V BOOS
4
0V
2
0
200
RL = 4Ω
–45
ST
= VS
+1
V BOO
0
10
20
30
40
OUTPUT CURRENT, IO (A)
50
POWER RESPONSE
100
10
100 1K 10K 100K 1M 10M
FREQUENCY,Ff (Hz)
100
1K
10K 100K
FREQUENCY, F (Hz)
1K 10K 100K 1M
FREQUENCY F (Hz)
SMALL SIGNAL PHASE
1
COMMON MODE REJECTION
0
10
100
–180
RL = 4Ω
1
60
0
OPEN LOOP PHASE, Ф (°)
120
OPEN LOOP GAIN RESPONSE, A (dB)
100
80
OUTPUT VOLTAGE, VO (VP-P)
0
POWER SUPPLY REJECTION
10
100 1K 10K 100K 1M 10M
FREQUENCY, F (Hz)
100K
FREQUENCY, F (Hz)
QUIESCENT CURRENT
1.18
80
1.16
OUTPUT CURRENT, (A)
0
100
VOLTAGE DROP FROM SUPPLY, VS – VO (V)
300
POWER SUPPLY REJECTION, PSR (dB)
POWER DERATING
400
NORMALIZED QUIESCENT CURRENT, IQ(X)
INTERNAL POWER DISSIPATION, P (W)
P r o d u c t I n n o v a t i o nF r o m
1.14
1.12
1.10
1.08
1.06
1.04
SAFE OPERATING AREA
t=
1m
s
DC 1
0m
DC
T
s
T C =2
DC
C =
5
85 °C
T
C =
°C
12
5°
C
t=
10
1M
1
1.02
1
0
50
100
150
200
TOTAL SUPPLY VOLTAGE, VSS (V)
0.1
1
10
100
SUPPLY TO OUTPUT DIFFERENTIAL, (V)
3
PA52 • PA52A
P r o d u c t I n n o v a t i o nF r o m
GENERAL
COMPENSATION
Please read Application Note 1 "General Operating Considerations" which covers stability, supplies, heat sinking,
mounting, current limit, SOA interpretation, and specification
interpretation. Visit www.Cirrus.com for design tools that help
automate tasks such as calculations for stability, internal power
dissipation, current limit; heat sink selection; Apex Precision
Power’s complete Application Notes library; Technical Seminar
Workbook; and Evaluation Kits.
Compensation is internally fixed for a gain of 3 or more and
is not adjustable by the user. The PA52 therefore is not unity
gain stable.
CURRENT LIMIT
There is no internal circuit provision for current limit in the
PA52. However, the PA52 circuit board in the PA52 evaluation
kit does provide a means whereby the output current can be
sensed. An external circuit current limit can thereby be implemented if needed.
POWER SUPPLY BYPASSING
Proper and sufficient power supply bypassing is crucial to
proper operation of the PA52. Bypass the +Vb and -Vb supply
pins with a minimum .1µF ceramic capacitors directly at the
supply pins. On the +Vs and -Vs pins use a combination of
ceramic and electrolytic capacitors. Use 1µF ceramic capacitors and an electrolytic capacitor at least 10µF for each amp
of output current required.
BOOST OPERATION
With the VBOOST feature the small signal stages of the
amplifier are operated at higher supply voltages than the
amplifier’s high current output stage. +VBOOST (pin 11) and
–VBOOST (pin 12) are connected to the small signal circuitry of
the amplifier. +VS (pin 9,10) and –VS (pin 3,4) are connected to
the high current output stage. An additional 10V on the VBOOST
pins is sufficient to allow the small signal stages to drive the
output transistors into saturation and improve the output voltage
swing for extra efficient operation when required. When close
swings to the supply rails is not required the +VBOOST and +VS
pins must be strapped together as well as the –VBOOST and –VS
pins. The boost voltage pins must not be at a voltage lower
than the VS pins.
Contacting Cirrus Logic Support
For all Apex Precision Power 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 Cirrus Logic Sales Representative.
To find the one nearest to you, go to www.cirrus.com
IMPORTANT NOTICE
Cirrus Logic, Inc. and its subsidiaries ("Cirrus") believe that the information contained in this document is accurate and reliable. However, the information is subject
to change without notice and is provided "AS IS" without warranty of any kind (express or implied). Customers are advised to obtain the latest version of relevant
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4
PA52U