PA33 [ETC]
Operational Amplifier ; 运算放大器\n
| 型号： | PA33 |
| 厂家： | 
ETC |
| 描述： | Operational Amplifier
|
| 文件： | 总4页 (文件大小：59K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
POWER OPERATIONAL AMPLIFIERS
PA33 • PA33A
M
I
C
R
O
T
E
C
H
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Y
HTTP:/ / WWW. APEXMICROTECH. COM (800) 546-APEX (800) 546-2739
FEATURES
• HIGH INTERNAL DISSIPATION — 250 WATTS
• HIGH VOLTAGE, HIGH CURRENT — 100V, 30A
• HIGH SLEW RATE — 100V/ µS
• 4 WIRE CURRENT LIMIT SENSING
• LOW DISTORTION
• EXTERNAL SHUTDOWN CONTROL
• OPTIONAL BOOST VOLTAGE INPUTS
• EVALUATION KIT — SEE EK04
APPLICATIONS
• LINEAR AND ROTARY MOTOR DRIVES
• SONAR TRANSDUCER DRIVER
• YOKE/ MAGNETIC FIELD EXCITATION
• PROGRAMMABLE POWER SUPPLIES TO ±45V
• AUDIO UP TO 500W
The DIP04 12-pin package (see Package Outlines) is
hermeticallysealedandisolatedfromtheinternalcircuits. The
use of compressible thermal washers and/or improper mount-
ing torque will void the product warranty. Please see “General
Operating Considerations”.
DESCRIPTION
TYPICAL APPLICATION
The PA33 is a high voltage MOSFET power operational
amplifier that extends the performance limits of power ampli-
fiers in slew rate and power bandwidth, while maintaining high
current and power dissipation ratings.
The high power bandwidth of the PA33 allows driving sonar
transducersviaaresonantcircuitincludingthetransducerand
a matching transformer. The load circuit appears resistive to
the PA33. Control logic turns off the amplifier's output during
shutdown.
ThePA33isahighlyflexibleamplifier. Theshutdowncontrol
feature allows the output stage to be turned off for standby
operation or load protection during fault conditions. 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.
Externalcompensationtailorsslewrateandbandwidthperfor-
mance to user needs. A four wire sense technique allows
precision current limiting without the need to consider internal
or external milliohm parasitic resistance in the output line. The
output stage is protected by thermal limiting circuits above
junction temperatures of 175°C.
R
f
CONTROL
LOGIC
R
ULTRA-
SONIC
DRIVE
i
1
2
12
7
PA33
R
CL
11
10
TUNED
TRANSFORMER
EQUIVALENT SCHEMATIC
SHUTDOWN
12
8
EXTERNAL CONNECTIONS
+Vs
9
–INPUT
SHUTDOWN
D1
4
+VBOOST
Q8
1
12
11
10
9
+INPUT
CURRENT LIMIT
Q1
Q13
Q4
2
Q5
COMP
D6
D9
Q12
Q16
CURRENT LIMIT
+VBOOST
3
COMP
3
TOP
VIEW
OUT
7
R C
CC
D5
Q18
4
5
6
Q10
Q22
COMP
–VBOOST
Q14
ILIM
11
8
*
+SUPPLY
Q17
D20
7
–IN
1
OUTPUT
10
ILIM
*
–SUPPLY
Q24
Q25
D19
Q21
BIAS
PHASE COMPENSATION
+IN
2
Q29
Gain
1
>3
≥10
CC
RC
D27
D31
470pF
220pF
82pF
120Ω
120Ω
120Ω
Q30
Q33
D4
–VBOOST
5
CC RATED FOR FULL SUPPLY VOLTAGE
6 –Vs
*See BOOST OPERATION paragraph.
APEX MICROTECHNOLOGY CORPORATION • TELEPHONE (520) 690-8600 • FAX (520) 888-3329 • ORDERS (520) 690-8601 • EMAIL prodlit@apexmicrotech.com
ABSOLUTE MAXIMUM RATINGS
SPECIFICATIONS
PA33 • PA33A
SUPPLY VOLTAGE, +VS to –VS
BOOST VOLTAGE
100V
SUPPLY VOLTAGE +20V
ABSOLUTE MAXIMUM RATINGS
OUTPUT CURRENT, continuous within SOA 30A
POWER DISSIPATION, internal
INPUT VOLTAGE, differential
INPUT VOLTAGE, common mode
TEMPERATURE, pin solder - 10s
TEMPERATURE, junction2
250W
±20V
±VB
300°C
175°C
TEMPERATURE, storage
–65 to +150°C
OPERATING TEMPERATURE RANGE, case –55 to +125°C
PA33
TYP
PA33A
TYP
SPECIFICATIONS
PARAMETER
TEST CONDITIONS1
MIN
MAX
MIN
MAX
UNITS
INPUT
OFFSET VOLTAGE, initial
OFFSET VOLTAGE, vs. temperature
OFFSET VOLTAGE, vs. supply
OFFSET VOLTAGE, vs. power
BIAS CURRENT, initial
BIAS CURRENT, vs. supply
OFFSET CURRENT, initial
INPUT IMPEDANCE, DC
5
20
10
30
10
.01
10
1011
13
10
50
30
2
10
*
10
5
*
5
*
*
5
30
*
mV
µV/°C
µV/V
µV/W
pA
pA/V
pA
Ω
Full temperature range
Full temperature range
50
50
20
20
INPUT CAPACITANCE
pF
COMMON MODE VOLTAGE RANGE
COMMON MODE REJECTION, DC
INPUT NOISE
Full temperature range
Full temp. range, VCM = ±20V
100KHz BW, RS = 1KΩ
±VB–8
90
*
*
V
dB
µVrms
100
10
*
*
GAIN
OPEN LOOP, @ 15Hz
GAIN BANDWIDTH PRODUCT
POWER BANDWIDTH
Full temperature range, CC = 82pF
RL = 10Ω
RL = 4Ω, VO = 80VP-P, AV = –10
CC = 82pF, RC = 120Ω
94
102
3
400
*
*
*
*
dB
MHz
kHz
PHASE MARGIN
Full temperature range, CC = 470pF
60
*
°
OUTPUT
VOLTAGE SWING
VOLTAGE SWING
CURRENT, peak
SETTLING TIME to .1%
SLEW RATE
IO = 20A
VBOOST = Vs + 5V, IO = 30A
±VS–9.5 ±VS–8.7
±VS–5.8 ±VS–5.0
30
*
*
*
*
*
V
V
A
µs
V/µs
nF
Ω
AV = +1, 10V step, RL = 4Ω
AV = –10, CC = 82pF, RC = 120Ω
Full temperature range, AV = +1
IO = 0, No load, 2MHz
2.5
*
*
80
100
CAPACITIVE LOAD
RESISTANCE
2.2
*
*
5
2
*
*
IO = 1A, 2MHz
Ω
POWER SUPPLY
VOLTAGE
CURRENT, quiescent, boost supply
CURRENT, quiescent, total
CURRENT, quiescent, total, shutdown
Full temperature range
±15
±45
46
±50
56
120
56
*
*
*
*
*
*
*
*
V
mA
mA
mA
90
46
THERMAL
RESISTANCE, AC, junction to case3
RESISTANCE, DC, junction to case
RESISTANCE, junction to air4
Full temperature range, F>60Hz
Full temperature range, F<60Hz
Full temperature range
.3
.4
12
.4
.5
*
*
*
*
*
°C/W
°C/W
°C/W
°C
TEMPERATURE RANGE, case
Meets full range specification
–25
85
*
*
NOTES:
*
The specification of PA33A is identical to the specification for PA33 in applicable column to the left.
1. Unless otherwise noted: TC = 25°C, CC = 470pF, RC = 120 ohms. DC input specifications are ± value given. Power supply
voltage is typical rating. ±VBOOST = ±VS.
2. 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.
4. The PA33 must be used with a heatsink or the quiescent power may drive the unit to junction temperatures higher than 150°C.
The PA33 is constructed from MOSFET transistors. ESD handling procedures must be observed.
CAUTION
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.
APEX MICROTECHNOLOGY CORPORATION • 5980 NORTH SHANNON ROAD • TUCSON, ARIZONA 85741 • USA • APPLICATIONS HOTLINE: 1 (800) 546-2739
TYPICAL PERFORMANCE
GRAPHS
PA33 • PA33A
POWER DERATING
POWER SUPPLY REJECTION
SLEW RATE VS. COMP.
250
200
150
100
80
100
80
60
60
100
40
40
20
50
0
20
0
0
25
50 75 100 125 150
10 100 1K 10K 100K 1M 10M
FREQUENCY f (Hz)
100
200
300
400
500
CASE TEMPERATURE, T(°C)
EXT. COMPENSATION CAPACITOR CC (pF)
SMALL SIGNAL RESPONSE
PHASE RESPONSE
OUTPUT VOLTAGE SWING
100
0
–45
12
ꢀ
RL = 8Ωꢀ ꢀ
RC = 12ꢀ 0Ωꢀ
CC = 82pf
80
60
40
10
8
ꢀ
CC = 82pf
CC = 220pf CC = 470pf
–90
CC = 470pf
CC = 220pf
CC = 220pf
CC = 470pf
–135
6
CC = 82pf
ꢀ
–180
–225
20
0
4
2
RL = 8Ωꢀ ꢀ
RC = 12ꢀ 0Ωꢀ
ꢀ
10 100 1K 10K 100K 1M 10M
FREQUENCY, f (Hz)
10 100 1K 10K 100K 1M 10M
FREQUENCY, f (Hz)
0
5
10
15
20 25
30
OUTPUT CURRENT, IO (A)
COMMON MODE REJECTION
PULSE RESPONSE
CURRENT LIMIT
7.5
130
100
AV = +1
CC = 470pF
120
110
100
90
5
80
60
40
2.5
0
–2.5
–5
80
70
60
20
0
–7.5
10
100
1K
10K 100K 1M
0
5
10
15
20
25
30
–50 –25
0
25 50 75 100 125
FREQUENCY, f (Hz)
TIME, t (µs)
CASE TEMPERATURE, TC (°C)
HARMONIC DISTORTION
QUIESCENT CURRENT
POWER RESPONSE
.2
100
1.2
1.1
1.0
AV = 10ꢀ
RL = 2Ωꢀ
.1
60
40
Ωꢀ
ꢀ
CC = 82ꢀ pF, R C = 120
±Vs = 31V
.05
C
= 220pF
C
20
10
.02
.01
P
= 1W
O
.005
6
4
.9
.8
.002
.001
P O = 200W
2
30 100 300 1K 3K 10K 30K
FREQUENCY, f (Hz)
20
40
60
80
100
40K 100K
.4M
1M
4M
TOTAL SUPPLY VOLTAGE, VS (V)
FREQUENCY, f (Hz)
APEX MICROTECHNOLOGY CORPORATION • TELEPHONE (520) 690-8600 • FAX (520) 888-3329 • ORDERS (520) 690-8601 • EMAIL prodlit@apexmicrotech.com
OPERATING
CONSIDERATIONS
PA33 • PA33A
GENERAL
SHUTDOWN OPERATION
Please read Application Note 1 "General Operating Consid-
erations" which covers stability, supplies, heat sinking, mount-
ing, current limit, SOA interpretation, and specification inter-
pretation. Visit www.apexmicrotech.com for design tools that
help automate tasks such as calculations for stability, internal
power dissipation, current limit; heat sink selection; Apex’s
complete Application Notes library; Technical Seminar Work-
book; and Evaluation Kits.
To disable the output stage, pin 12 is connected to ground
via relay contacts or via an electronic switch. The switching
device must be capable of sinking 2mA to complete shutdown
andcapableofstandingoffthesupplyvoltage+VS. SeeFigure
2 for suggested circuits.
–LOGIC
K1
12
SHUTDOWN
CURRENT LIMIT
Thetwocurrentlimitsenselinesaretobeconnecteddirectly
across the current limit sense resistor. For the current limit to
work correctly, pin 11 must be connected to the amplifier
output side and pin 10 connected to the load side of the current
limit resistor, RCL, as shown in Figure 1. This connection will
bypass any parasitic resistances, RP formed by sockets and
solder joints as well as internal amplifier losses. The current
limiting resistor may not be placed anywhere in the output
circuit except where shown in Figure 1. If current limiting is not
used, pins 10 and 11 must be tied to pin 7.
A
12
SHUTDOWN
–LOGIC
Q1
The value of the current limit resistor can be calculated as
470Ω
follows:
Rf
B
FIGURE 2. SHUTDOWN OPERATION
10
R
i
1
11
CL
R
R
CL
P
7
INPUT
CL
PA33
From an internal circuitry standpoint, shutdown is just a
special case of current limit where the allowed output current
iszero.Aswithcurrentlimit,however,asmallcurrentdoesflow
in the output during shutdown. A load impedance of 100 ohms
orlessisrequiredtoinsuretheoutputtransistorsareturnedoff.
Note that even though the output transistors are off the output
pin is not open circuited because of the shutdown operating
current.
2
R
L
ILIMIT = .7/RCL
FIGURE 1. CURRENT LIMIT
SAFE OPERATING AREA (SOA)
BOOST OPERATION
The MOSFET output stage of this power operational ampli-
fier has two distinct limitations:
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 9), and
–VBOOST (pin 5) are connected to the small signal circuitry of
the amplifier. +VS (pin 8) and –VS (pin 6) are connected to the
high current output stage. An additional 5V 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.Theboostvoltagepinsmustnotbeatavoltagelowerthan
the VS pins.
1. The current handling capability of the MOSFET geometry
and the wire bonds.
2. The junction temperature of the output MOSFETs.
NOTE: The output stage is protected against transient flyback.
However, for protection against sustained, high energy
flyback, external fast-recovery diodes should be used.
30
15
12
9
6
COMPENSATION
3
The external compensation components CC and RC are
connected to pins 3 and 4. Unity gain stability can be achieved
at any compensation capacitance greater than 470 pF with at
least60degreesofphasemargin. Athighergains, morephase
shift can be tolerated in most designs and the compensation
capacitance can accordingly be reduced, resulting in higher
bandwidth and slew rate. Use the typical operating curves as
a guide to select CC and RC for the application.
1.5
1.2
.9
.6
.3
1
2
3
4 5
10
20 30 40 50
100
SUPPLY TO OUTPUT DIFFERENTIAL (V)
This data sheet has been carefully checked and is believed to be reliable, however, no responsibility is assumed for possible inaccuracies or omissions. All specifications are subject to change without notice.
PA33U REV. A JULY 2001 © 2001 Apex Microtechnology Corp.
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