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PA12H
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PA12H
PA12H
Power Operational Amplifier
FEATURES
• LOW COST 200°C VERSION OF PA12
• OUTPUT CURRENT at 200°C — ±1A
• FULL SPECIFICATIONS — –25°C to +125°C
• WIDE SUPPLY RANGE — ±10 to ±45V
• CURRENT FOLDOVER PROTECTION
• EXCELLENT LINEARITY — Class A/B Output
APPLICATIONS
• MOTOR, VALVE AND ACTUATOR CONTROL
• POWER TRANSDUCERS UP TO 100kHz
• PROGRAMMABLE POWER SUPPLIES UP TO 80V
• TRANSMISSION LINE DRIVER
8-PIN TO-3
PACKAGE STYLE CE
SPECIFICATIONS
Specifications of the standard PA12 apply to the PA12H with
the exception of the temperature range extensions
1. The operating and storage temperature ABSOLUTE MAXI-
MUM RATINGS extend to +200°C.
2. Static and dynamic tests are performed at +125°C as shown
in SG 2 and SG 5 of the military PA12M data sheet.
3. Additional tests at T
C
= 200°C:
A. Quiescent current = 100mA max at ±V
S
= 45.
B. Voltage swing = ±V
S
–4 (I
O
= 1A, ±V
S
= 15)
DESCRIPTION
The PA12H is a low cost, high temperature Power Op Amp
made especially for short term use in extreme environmental
situations such as down hole instrumentation. The amplifier
can power mechanical or electronic transducers and can drive
the long transmission lines associated with these applications.
The PA12H, based on the standard PA12’s very high
power level, leaves a six watt capability after being derated
for operation at a case temperature of 200°C. To meet the
high temperature requirements for up to 200 hours, polyimid
has replaced the standard epoxy for attaching the small signal
devices.
These hybrid integrated circuits utilize thick film conductors,
ceramic capacitors and silicon semiconductors to maximize
reliability, minimize size and give top performance. Ultrasoni-
cally bonded aluminum wires provide reliable interconnections
at all operating temperatures. The 8-pin TO-3 package (see
Package Outlines) is hermetically sealed and isolated.The use
of compressible thermal washers and/or improper mounting
torque will void the product warranty. Please see “General
Operating Considerations”
.
CALCULATED LIFE EXPECTANCY
EXPECTED LIFE, HOURS
1000
GENERAL CONSIDERATIONS
The primary aim of the PA12H is to provide a reasonable
level of power output at a minimum cost. To achieve this end,
full dynamic tests are performed up to 125°C, with only minimal
100% testing at 200°C. This approach saves nearly an order
of magnitude over the cost of a fully tested long life product,
but does require recognition of two limitations.
First, input parameters such as voltage offset and bias cur-
rent are not tested above 125°C. This could lead to accuracy
problems if the PA12H is used as a precision computational
element. Solutions to this limitation include contacting the
factory regarding additional testing at higher temperatures or
using high temperature small signal amplifiers for computa-
tional tasks.
The second limitation of life span requires the PA12H to
be used in short term applications. This requirement is man-
dated by the low cost design concept. At 200°C component
degradation is nearly as severe during storage as during actual
operation. This must be taken into account when scheduling
actual implementation of the finished package.
Please consult the PA12 data sheet for basic information
on this amplifier; the PA12M data sheet for details on +125°C
tests, and Power Operational Amplifier handbook section
“General Operating Considerations,” for recommendations
on supplies, stability, heatsinks and bypassing.
100
EXTERNAL CONNECTIONS
R
CL+
CL+
+V
S
2
1
10
188
3
OUT
OUTPUT
192
196
200
+IN
4
TOP VIEW
–IN
5
8
CL–
–V
S
6
7
R
CL-
F.O.
PA12HU
http://www.cirrus.com
Copyright © Cirrus Logic, Inc. 2009
(All Rights Reserved)
MAY 2009
1
APEX − PA12HUREVJ
PA12H
P r o d u c t I n n o v a t i o nF r o m
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-
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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.
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