PA02DI
PA02DIU 1
PA02 Design Ideas
BACKGROUND
In 1985, Apex Microtechnology rst addressed inquiries on how the PA02 could be used to second source the LH0101. Now,
because of Apex Microtechnology’s commitment to continue production of the PA02, it is the part of choice for most new designs.
For retrot situations, the PA02 can be substituted for the LH0101 without requiring a PC layout change.
COMPARING THE LH0101 AND THE PA02
The PA02 can satisfy the majority of applications now using the 0101, and can often do it with improved frequency response,
linearity and distortion. The table below and the notes that follow compare the two devices.
KEY SPECIFICATION COMPARISON
LH0101 LH0101 LH0101 LH0101
K AK CK ACK PA02 PA02A PA02M Units
V
OS
, Initial 10 3 10 3 10 3 10 mV
V
OS
, vs. Temp 15 7 15 7 13 5.5 15 mV
Bias Current, Initial 1000 300 1000 300 200 100 200 pA
Offset Current, Initial 250 75 250 75 100 50 100 pA
Temp Range –55/+125 –55/+125 –25/+85 –25/+85 –25/+85 –55/+125 –55/+125 °C
Power Bandwidth 300 300 300 300 350 350 350 kHz
Slew Rate (minimum) N/A 7.5 N/A 7.5 13 13 13 V/µs
Distortion @ 0.5w, 0.008 0.008 0.008 0.008 0.004 0.004 0.004 %
1 kHz, 10 ohms (typical)
Note: The LH0101 is rated from ±5V to ±22V. The PA02 is rated from ±7V to ±19V. Do not use the PA02 below ±7V
(14V total) or above ±19V (38V total).
PIN-OUT COMPARISON
LH0101 Function Pin No. PA02 Function
SC+ 1 RCL+
V+ 2 +V
S
Feedback 3 Out
(Note 1) 4 Out
–IN 5 –IN
+IN 6 +IN
V�� 7 –V
S
SC– 8 RCL–
Out Case Isolated
NOTE 1: MAY BE “OUT” OR “N/C”, DEPENDING ON DATA SHEET REVISION
The PA02 can often drop into the LH0101 socket and improve performance in the areas noted above. This “drop in” status ap-
plies when the LH0101 does not employ the swing enhancement network. More simply stated, where Pin No. 3 is tied directly to
the output (i.e., the case), the 0101 and PA02 are often interchangeable. For circuits which do employ the swing enhancement,
one resistor should be removed and another replaced with a jumper. This retrot saves parts and assembly cost and improves
circuit efficiency by eliminating the drop across each of the two resistors. In both cases, the case of the PA02 is tied to the output.
This is acceptable.
Replacing the LH0101 with the APEX PA02
PA02 Design Ideas
Copyright © Apex Microtechnology, Inc. 2012
(All Rights Reserved)
www.apexanalog.com
SEP 2012
PA02DIU REV2
PA02DI
2 PA02DIU
QUESTIONS?
If you have questions, or would like further
assistance converting your design to the PA02,
please call the Apex Microtechnology Applications
Design Support Request at (800) 546-2739.
+V
S
–V
S
CASE
R
L
3
5Ω
+V
S
–V
S
CASE
R
L
3
5Ω
+V
S
–V
S
CASE
R
L
3
5Ω
51Ω
100Ω
+V
S
–V
S
CASE
R
L
3
5Ω
J1
REMOVE
LH0101 PA02
LH0101 PA02
“DROP IN” EXAMPLE
MODIFICATION EXAMPLE
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 apex.support@apexanalog.com.
International customers can also request support by contacting their local Apex Microtechnology Sales Representative.
To nd 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 specications or products mentioned herein to improve reliability. This document is the property of Apex Microtechnology and by furnishing this informa-
tion, 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 informa-
tion 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 UNDER-
STOOD 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.
Copyright © Apex Microtechnology, Inc. 2012
(All Rights Reserved)
www.apexanalog.com
SEP 2012
PA02DIU REV2