PA84ACE [CIRRUS]
Operational Amplifier, 1 Func, 1000uV Offset-Max, BIPolar, MBFM8, ROHS COMPLIANT, HERMETIC SEALED, TO-3, 8 PIN;
| 型号： | PA84ACE |
| 厂家： | 
CIRRUS LOGIC |
| 描述： | Operational Amplifier, 1 Func, 1000uV Offset-Max, BIPolar, MBFM8, ROHS COMPLIANT, HERMETIC SEALED, TO-3, 8 PIN 局域网 放大器 |
| 文件： | 总5页 (文件大小：404K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
P r o d u c t
I n n o v a t i o n
F r o m
PA84•PA84A•PA84S
Power Operational Amplifiers
FEATURES
• HIGH SLEW RATE — 200V/µs
• FAST SETTLING TIME — .1% in 1µs (PA84S)
• FULLY PROTECTED INPUT — Up to ±150v
• LOW BIAS CURRENT, LOW NOISE — FET Input
• WIDE SUPPLY RANGE — ±15V to ±150V
8-PIN TO-3
PACKAGE STYLE CE
100K 50K
APPLICATIONS
• HIGH VOLTAGE INSTRUMENTATION
• ELECTROSTATIC TRANSDUCERS & DEFLECTION
• PROGRAMMABLE POWER SUPPLIES UP TO 290V
• ANALOG SIMULATORS
+150V
4.7K
390pF
10V
DESCRIPTION
DAC
The PA84 is a high voltage operational amplifier designed
for output voltage swings up to ±±45V with a dual supply or
290V with a single supply. Two versions are available. The
new PA84S, fast settling amplifier can absorb differential input
overvoltagesupto±50VwhiletheestablishedPA84andPA84A
can handle differential input overvoltages of up to ±ꢀ00V.Both
versions are protected against common mode transients and
overvoltages up to the supply rails. High accuracy is achieved
with a cascode input circuit configuration. All internal biasing
is referenced to a zener diode fed by a FET constant current
source.As a result, the PA84 features an unprecedented sup-
ply range and excellent supply rejection. The output stage is
biased-on for linear operation. External phase compensation
allows for user flexibility in obtaining the maximum slew rate.
Fixed current limits protect these amplifiers against shorts
to common at supply voltages up to ±50V. For operation into
inductive loads, two external flyback pulse protection diodes
are recommended. However, a heatsink may be necessary to
maintain the proper case temperature under normal operating
conditions.
10K
PA84
• • • • • •
• • • • • •
• • • • • •
INK JET
CONTROL
–150V
TYPICAL APPLICATION
ThePA84isideallysuitedtodrivinginkjetcontrolunits(often
a piezo electric device) which require precise pulse shape
control to deposit crisp clear date or lot code information on
product containers. The external compensation network has
been optimized to match the gain setting of the circuit and the
complex impedance of the ink jet control unit.The combination
of speed and high voltage capabilities of the PA84 form ink
dropletsofuniformvolumeathighproductionratestoenhance
the value of the printer.
EQUIVALENT SCHEMATIC
4
This hybrid integrated circuit utilizes a beryllia (BeO) sub-
strate,thickfilmresistors,ceramiccapacitorsandsemiconduc-
tor 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-ꢀ package is hermetically sealed and electrically
isolated. The use of compressible thermal isolation washers
and/orimpropermountingtorquewillvoidtheproductwarranty.
Please see “General Operating Considerations”.
2
C1
D1
3
Q3
Q1
Q8
Q2
Q4
Q5
Q6
8
5
Q9
Q10
Q12B
Q7
C5
Q11
C4
*
*
1
EXTERNAL CONNECTION
Q12A
*
PHASE COMPENSATION
Q13
*
+VS
GAIN
CC
RC
Q17
Q14
BAL
*
2
Q16
3
*
6
7
Q15
OUT
1
1
10nF 200Ω
500pF 2KΩ
50pF 20KΩ
10
CC
BAL 4
C6
D2
100
TOP VIEW
1000 none
none
5
NOTES:
1. Phase Compensation required
for safe operation.
2. Input offset trimpot optional.
Recommended value 100KΩ.
RC
COMP
–IN
*Not included in PA84S.
8
6
7
+IN
–VS
Copyright © Cirrus Logic, Inc. 2009
(All Rights Reserved)
MAY 2009
APEX − PA84UREVP
http://www.cirrus.com
P r o d u c t I n n o v a t i o n F r o m
PA84 • PA84A • PA84S
SUPPLY VOLTAGE, +VS to –VS
OUTPUT CURRENT, within SOA
ꢀ00V
Internally Limited
±7.5W
±ꢀ00V
±50V
ABSOLUTE MAXIMUM RATINGS
POWER DISSIPATION, internal at TC = 25°C2
INPUT VOLTAGE, differential PA84/PA84A±
INPUT VOLTAGE, differential PA84S
INPUT VOLTAGE, common mode±
±VS
TEMPERATURE, pins for ±0s max (solder)
ꢀ00°C
±75°C
TEMPERATURE, junction2
TEMPERATURE RANGE, storage
OPERATING TEMPERATURE RANGE, case
–65 to +±50°C
–55 to +±25°C
SPECIFICATIONS
PA84/PA84S
PA84A
TYP
PARAMETER
TEST CONDITIONS3
MIN
TYP
MAX
MIN
MAX
UNITS
INPUT
OFFSET VOLTAGE, initial
OFFSET VOLTAGE, vs. temperature
OFFSET VOLTAGE, vs. supply
OFFSET VOLTAGE, vs. time
BIAS CURRENT, initial4
TC = 25°C
TC = –25° to +85°C
TC = 25°C
TC = 25°C
TC = 25°C
±±.5
±±0
±.5
±75
5
±ꢀ
±25
±.5
±5
±.2
*
±±
±±0
mV
µV/°C
µV/V
µV/√kh
pA
50
ꢀ
±0
BIAS CURRENT, vs. supply
OFFSET CURRENT, initial4
OFFSET CURRENT, vs. supply
INPUT IMPEDANCE, DC
INPUT CAPACITANCE
TC = 25°C
TC = 25°C
TC = 25°C
TC = 25°C
TC = –25° to +85°C
TC = –25° to +85°C
TC = –25° to +85°C
.0±
*
pA/V
pA
pA/V
Ω
pF
V
±2.5
±.0±
±0±±
6
±50
±±.5
±±0
*
*
*
*
*
COMMON MODE VOLTAGE RANGE5
COMMON MODE REJECTION, DC
±VS–±0 ±VS–8.5
±ꢀ0
*
dB
GAIN
OPEN LOOP GAIN at ±0Hz
OPEN LOOP GAIN at ±0Hz.
TC = 25°C, RL = ∞
TC = 25°C, RL = ꢀ.5KΩ
±20
±±8
75
250
±20
*
*
*
*
*
dB
dB
MHz
kHz
kHz
±00
*
GAIN BANDWIDTH PRODUCT@ ±MHz TC = 25°C, RL = ꢀ.5KΩ, RC = 20KΩ
POWER BANDWIDTH, high gain
POWER BANDWIDTH, low gain
TC = 25°C, RL = ꢀ.5KΩ, RC = 20KΩ
TC = 25°C, RL = ꢀ.5KΩ, RC = 20KΩ
±80
OUTPUT
VOLTAGE SWING5
TC = 25°C, IO = ±40mA
TC = –25° to +85°C, IO = ±±5mA
TC = 25°C
TC = 25°C
TC = 25°C, RL = ꢀ.5KΩ, RC = 20KΩ
TC = 25°C, RL = ꢀ.5KΩ, RC = 2KΩ
±VS–7 ±VS–ꢀ
±VS–5 ±VS–2
*
*
*
*
*
V
V
VOLTAGE SWING5
CURRENT, peak
40
50
200
±25
2
mA
mA
V/µs
V/µs
µs
µs
µs
CURRENT, short circuit
SLEW RATE, high gain
SLEW RATE, low gain
SETTLING TIME .0±% at gain = ±00
SETTLING TIME .±% at gain = ±00
SETTLING TIME .0±% at gain = ±00
SETTLING TIME .±% at gain = ±00
*
*
*
±50
TC = 25°C, RL = ꢀ.5KΩ
PA84S
RC = 20KΩ, VIN = 2V step ONLY
±
20
±2
TC = 25°C, RL = ꢀ.5KΩ
PA84/84A
20
±2
RC = 20KΩ, VIN = 2V step
µs
POWER SUPPLY
VOLTAGE
CURRENT, quiescent
TC = –55°C to +±25°C
TC = 25°C
±±5
5.5
±±50
7.5
*
*
*
*
V
mA
*
THERMAL
RESISTANCE, AC, junction to case6
RESISTANCE, DC, junction to case
RESISTANCE, case to air
TEMPERATURE RANGE, case
TC = –55°C to +±25°C, F > 60Hz
TC = –55°C to +±25°C, F < 60Hz
TC = –55°C to +±25°C
4.26
6.22
*
*
*
°C/W
°C/W
°C/W
°C
8.57
+85
*
*
ꢀ0
Meets full range specifications
–25
NOTES:
*
The specification of PA84A is identical to the specification for PA84/PA84S in applicable column to the left.
±. Signal slew rates at pins 5 and 6 must be limited to less than ±V/ns to avoid damage. When faster waveforms are unavoidable,
resistors in series with those pins, limiting current to ±50mA will protect the amplifier from damage.
2. Long term operation at the maximum junction temperature will result in reduced product life. Derate internal power dissipation to
achieve high MTTF.
ꢀ. The power supply voltage for all tests is ±±50V, unless otherwise noted as a test condition.
4. Doubles for every ±0°C of temperature increase.
5. +VS and –VS denote the positive and negative power supply rail respectively.
6. Rating applies if the output current alternates between both output transistors at a rate faster than 60Hz.
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.
CAUTION
2
PA84U
P r o d u c t I n n o v a t i o n F r o m
PA84 • PA84A • PA84S
POWER DERATING
CURRENT LIMIT
OPEN LOOP GAIN
20
17.5
15
80
70
4
2
TC = 85°C
RL = 3.5KΩ
60
50
40
30
20
0
12.5
10
TC = 25°C
–2
7.5
5
–4
T
C = –25°C
–6
–8
2.5
0
0
25
50
75
100 125 150
–55 –25
0
25 50 75 100 125
CASE TEMPERATURE, TC (°C)
0
50
100 150 200 250 300
TOTAL SUPPLY VOLTAGE, VS (V)
TEMPERATURE, T (°C)
SMALL SIGNAL RESPONSE
OUTPUT VOLTAGE SWING
POWER RESPONSE
300
5.0
4.5
4.0
3.5
120
100
80
200
150
100
60
60
40
3.0
2.5
2.0
1.5
= –25°C
20
0
C
T
30
15
RL = 3.5KΩ
VS = ±150V
–20
1
10 100 1K 10K .1M 1M 10M
FREQUENCY, F (Hz)
50K
0
10 20 30 40 50 60 70
OUTPUT CURRENT, IO (mA)
.1M
.2M .3M .5M 1M
.7M
FREQUENCY, F (Hz)
SLEW RATE VS. SUPPLY
SLEW RATE VS. COMP
INPUT NOISE
1.6
1.4
200
150
100
20
15
10
7
1.2
1.0
.8
70
50
5
30
20
3
2
.6
RL = 3.5KΩ
RL = 3.5KΩ
.4
30 50
200
500 1K 2K
5K 10K 20K
.1M
100
150
200
250 300
10
100
1K
10K
EXT. COMPENSATION RESISTANCE, RC (Ω)
TOTAL SUPPLY VOLTAGE, VS (V)
FREQUENCY, F (Hz)
COMMON MODE REJECTION
POWER SUPPLY REJECTION
COMMON MODE VOLTAGE
300
140
140
120
200
150
120
100
80
100
80
100
50
30
60
40
20
60
40
20
VS = ±150V
15
1
10
100
FREQUENCY, F (Hz)
1M
1
10
100 1K 10K .1M 1M
FREQUENCY, F (Hz)
10K .1M
10K 20K
50K .1M .2M
.5M 1M
1K
FREQUENCY, F (Hz)
PA84U
3
P r o d u c t I n n o v a t i o n F r o m
PA84 • PA84A • PA84S
GENERAL
OUTPUT PROTECTION
PleasereadApplicationNote±"GeneralOperatingConsider-
ations"whichcoversstability,supplies,heatsinking,mounting,
currentlimit,SOAinterpretation,andspecificationinterpretation.
Visit www.Cirrus.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 informa-
tion on specific 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 Precision Power product models,
consult the "Evaluation Kit" section for details. For the most
currentversionofallApexPrecisionPowerproductdatasheets,
visit www.Cirrus.com.
Two external diodes as shown in Figure ±, are required
to protect these amplifiers against flyback (kickback) pulses
exceeding the supply voltages of the amplifier when driving
inductiveloads. Forcomponentselection,theseexternaldiodes
must be very quick, such as ultra fast recovery diodes with
no more than 200 nanoseconds of reverse recovery time. Be
sure the diode voltage rating is greater than the total of both
supplies. The diode will turn on to divert the flyback energy
into the supply rails thus protecting the output transistors from
destruction due to reverse bias.
+VS
FIGURE 1. PROTECTIVE,
INDUCTIVE LOAD
SAFE OPERATING AREA (SOA)
The bipolar output stage of this high voltage operational
amplifier has two output limitations:
±. The internal current limit which limits maximum available
output current.
2. The second breakdown effect, which occurs whenever the
simultaneous collector current and collector-emitter voltage
exceeds specified limits.
–VS
A note of caution about the supply.The energy of the flyback
pulse must be absorbed by the power supply. As a result, a
transient will be superimposed on the supply voltage, the
magnitude of the transient being a function of its transient
impedance and current sinking capability.If the supply voltage
plus transient exceeds the maximum supply rating or if the AC
impedance of the supply is unknown, it is best to clamp the
outputandthesupplywithazenerdiodetoabsorbthetransient.
SOA
50
t = 1ms
STEADY STATE
40
35
STABILITY
Due to its large bandwidth the PA84 is more likely to oscillate
than lower bandwidth Power Operational Amplifiers such as
the PA8ꢀ or PA08.To prevent oscillations, a reasonable phase
margin must be maintained by:
30
25
±. Selection of the proper phase compensation capacitor and
resistor. Use the values given in the table under external
connectionsandinterpolateifnecessary.Thephasemargin
can be increased by using a large capacitor and a smaller
resistor than the slew rate optimized values listed in the
table. The compensation capacitor may be connected to
common (in lieu of +VS) if the positive supply is properly
bypassed to common.Because the voltage at pin 8 is only a
few volts below the positive supply, this ground connection
requires the use of a high voltage capacitor.
2. Keeping the external sumpoint stray capacitance to ground
at a minimum and the sumpoint load resistance (input and
feedback resistors in parallel) below 500Ω.Larger sumpoint
load resistance can be used with increased phase compen-
sation (see ± above).
SAFE OPERATING AREA CURVES
20
150
200
250
300
170
SUPPLY TO OUTPUT DIFFERENTIAL VOLTAGE (V)
The SOA curves combine the effect of these limits. For a
given application, the direction and magnitude of the output
currentshouldbecalculatedormeasuredandcheckedagainst
the SOA curves. This is simple for resistive loads but more
complex for reactive and EMF generating loads. However,
the following guidelines may save extensive analytical efforts:
±. The following capacitive and inductive loads are safe:
±±S
±50V
±25V
±00V
75V
C(MAX)
±.2µF
6.0µF
±2µF
L(MAX)
.7H
25H
90H
ALL
ꢀ. Connecting the amplifier case to a local AC common thus
preventing it from acting as an antenna.
ALL
2. Short circuits to ground are safe with dual supplies up to
±±50V or single supplies up to ±50V.
ꢀ. Short circuits to the supply rails are safe with total supply
voltages up to ±50V (i.e. ±75V).
4
PA84U
P r o d u c t I n n o v a t i o n F r o m
PA84 • PA84A • PA84S
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 apex.support@cirrus.com.
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
information to verify, before placing orders, that information being relied on is current and complete. All products are sold subject to the terms and conditions of sale
supplied at the time of order acknowledgment, including those pertaining to warranty, indemnification, and limitation of liability. No responsibility is assumed by Cirrus
for the use of this information, including use of this information as the basis for manufacture or sale of any items, or for infringement of patents or other rights of third
parties. This document is the property of Cirrus and by furnishing this information, Cirrus grants no license, express or implied under any patents, mask work rights,
copyrights, trademarks, trade secrets or other intellectual property rights. Cirrus owns the copyrights associated with the information contained herein and gives con-
sent for copies to be made of the information only for use within your organization with respect to Cirrus integrated circuits or other products of Cirrus. 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.
CERTAIN APPLICATIONS USING SEMICONDUCTOR PRODUCTS MAY INVOLVE POTENTIAL RISKS OF DEATH, PERSONAL INJURY, OR SEVERE PROP-
ERTY OR ENVIRONMENTAL DAMAGE (“CRITICAL APPLICATIONS”). CIRRUS PRODUCTS ARE NOT DESIGNED, AUTHORIZED OR WARRANTED TO BE
SUITABLE FOR USE IN PRODUCTS SURGICALLY IMPLANTED INTO THE BODY, AUTOMOTIVE SAFETY OR SECURITY DEVICES, LIFE SUPPORT PROD-
UCTS OR OTHER CRITICAL APPLICATIONS. INCLUSION OF CIRRUS PRODUCTS IN SUCH APPLICATIONS IS UNDERSTOOD TO BE FULLY AT THE CUS-
TOMER’S RISK AND CIRRUS DISCLAIMS AND MAKES NO WARRANTY, EXPRESS, STATUTORY OR IMPLIED, INCLUDING THE IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS FOR PARTICULAR PURPOSE, WITH REGARD TO ANY CIRRUS PRODUCT THAT IS USED IN SUCH A MANNER. IF THE
CUSTOMER OR CUSTOMER’S CUSTOMER USES OR PERMITS THE USE OF CIRRUS PRODUCTS IN CRITICAL APPLICATIONS, CUSTOMER AGREES,
BY SUCH USE, TO FULLY INDEMNIFY CIRRUS, ITS OFFICERS, DIRECTORS, EMPLOYEES, DISTRIBUTORS AND OTHER AGENTS FROM ANY AND ALL
LIABILITY, INCLUDING ATTORNEYS’ FEES AND COSTS, THAT MAY RESULT FROM OR ARISE IN CONNECTION WITH THESE USES.
Cirrus Logic, Cirrus, and the Cirrus Logic logo designs, Apex Precision Power, Apex and the Apex Precision Power logo designs are trademarks of Cirrus Logic, Inc.
All other brand and product names in this document may be trademarks or service marks of their respective owners.
PA84U
5
相关型号：
PA85CE
Operational Amplifier, 1 Func, 2000uV Offset-Max, Hybrid, MBFM8, ROHS COMPLIANT, HERMETIC SEALED, TO-3, 8 PIN
CIRRUS
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