PA107DP Datasheet PDF - Cirrus Logic
| Part Number | PA107DP | |
| Description | Power Operational Amplifiers | |
| Manufacturers | Cirrus Logic | |
| Logo |  |
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Power Operational Amplifiers
PA1P0A170D7DPP
FEATURES
♦ High Voltage 180 Vp-p
♦ High Slew Rate 2500 V/µs Minimum
with A CL = 20
♦ High Gain Bandwidth 180 MHz
♦ High Output Current ±1.5 A Steady State
Within SOA
♦ High Peak Output Current ±5 A
APPLICATIONS
♦ Piezo Drive
♦ CRT Beam Intensity Control
♦ ATE Applications
♦ Line Driver
GENERAL DESCRIPTION
The PA107DP is a state of the art wideband high pow-
er operational amplifier designed to drive resistive, ca-
pacitive or inductive loads. For optimum linearity the
output stage is biased for class A/B operation. Feed
forward technology is used to obtain wide bandwidth
and excellent DC performance, but constricts use to
inverting mode only. External compensation allows the
user to obtain both high gain and wide bandwidth. Use
of a heatsink is required to realize the SOA.
This hybrid integrated circuit uses thick film resistors,
ceramic capacitors, and semiconductors to maximize
reliability, minimize size, and give top performance.
Ultrasonically bonded aluminum wires provide reliable
interconnections at all operating temperatures. The 12
pin SIP package occupies only 2 square inches. The
use of compressible insulation washers voids the war-
ranty.
+VAUX
2+VAUX
EQUIVALENT SCHEMATIC
+VAUX
R4
Q10
Q4
D9
R18
+VS
R6
Q8
Q11
R12
Q14
D1
IN 1
D
R1 G Q1:1
S
C2
-VAUX
3
R2
D
G Q1:2
S
-VAUX D3
+VAUX
Q5
Q2
D5
-VAUX
+VAUX
D6 Q3
Q6
GND 4
C1
R3
+ U1
-
VEE C3
Q7
R19
D2 D4 Q13
D10
R5
D7
D8
-VAUX
C4 R7 R10
R14
R15
C5 R8 R11
Q12
Q9
R9
-VS
Q15
R13
8 +VS
R16 Q19
Q17
12 +Vsp
Q20
Q16 11 OUT
Q21
Q18
10 -VSP
R17 Q22
9 -VS
PA10h7tDtpP://Uwww.cirrus.com
Copyright © Cirrus Logic, Inc. 2009
(All Rights Reserved)
AUG 20091
APEX − PA107DPUREVA
|
| |
 
Product Innova tionFrom
PA107DP
PIN DESCRIPTIONS
Pin #
Pin name
Description
1 IN Summing Junction Input for Inverting Operational Amplifier
2
+VAUX
+10V to +18V Supply for Input Circuits
3
-VAUX
-10V to -18V Supply for Input Circuits
4
GND
Ground
5 Open Pin
6 Open Pin
7 Open Pin
8 +VS +20V to +100V Supply for Gain and Gate Driver Circuits
9 -VS -20V to -100V Supply for Gain and Gate Driver Circuits
10 -VSP -20V to -100V Supply for Output Source Follower
11
OUT
High Power Output of Amplifier
12
+VSP
+20V to +100V Supply for Output Source Follower
3. GENERAL
Please read Application Note 1 “General Operating Considerations” which covers stability, power 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, complete Application Notes library, Technical Seminar Workbook and Evaluation Kits.
CAUTION
In order to achieve the highest speed with limited space short circuit protection and thermal protection were sacri-
ficed. Do not short the output. Note that if current limiting at 1.5 A could be used, and the output was shorted, internal
dissipation would be 150 W. This would still destroy the amplifier, albeit more slowly.
4. INTERNAL POWER DISSIPATION AND HEATSINK SELECTION
With the unique combination of high voltage and speed of the PA107, traditional formulas for heatsink selection will
falsely lower the apparent power handling capability of this amplifier. To more accurately predict operating tempera-
tures use Power Design1 revision 10 or higher, or use the following procedure:
Find internal dissipation (PD) resulting from driving the load. Use Power Design or refer to Apex Applications Note
1, General Operating Considerations, paragraph 7. Find total quiescent power (PDQ) by multiplying 0.035 A by VSS
(total supply voltage), plus 0.021 times the total VAUX (+VAUX + |-VAUX|). Find output stage quiescent power (PDQOUT)
by multiplying 0.001 by VSS.
Calculate a heatsink rating which will maintain the case at 85°C or lower.
RØSA
=
TC -
PD +
TA
PDQ
-0.1°C/W
Where:
TC = maximum case temperature allowed
TA = maximum ambient temperature encountered
RØSA =
TJ - TA - (PD + PDQOUT) • RØJC
PD + PDQ
-0.1°C/W
Calculate a heatsink rating which will maintain output transistor junctions at 150°C or lower.
Where:
TJ = maximum junction temperature allowed.
RØJC = AC or DC thermal resistance from the specification table.
Use the larger heatsink of these two calculations.
Power Design is an Excel spreadsheet available free from www.cirrus.com
PA107DPU
5
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Part DetailsOn this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for PA107DP electronic component. |
| Information | Total 7 Pages | |
| Link URL | [ Copy URL to Clipboard ] | |
| Download | [ PA107DP.PDF Datasheet ] | |
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