datasheet for PA75CX by Apex Microtechnology

datasheet for PA75CX by Apex Microtechnology
PA75
PA75
PA75
Dual Power Operational Amplifiers
FEATURES
• RoHS COMPLIANT
• LOW COST
• WIDE BANDWIDTH - 1.1 Mhz
• HIGH OUTPUT CURRENT - 2.5A (Combined)
• WIDE COMMON MODE RANGE Includes negative supply
• WIDE SUPPLY VOLTAGE RANGE Single supply: 5V to 40V
Split supplies: ± 2.5V to ± 20V
• LOW QUIESCIENT CURRENT
• VERY LOW DISTORTION
APPLICATIONS
• HALF AND FULL BRIDGE MOTOR DRIVERS
• AUDIO POWER AMPLIFIER
• IDEAL FOR SINGLE SUPPLY SYSTEMS
5V Peripherals, 12V Automotive, 28V Avionic
7 PIN DDPAK
PACKAGE STYLE CC
7 PIN TO220
STAGGERED LEADS
PACKAGE STYLE CX
TYPICAL APPLICATION
Ref: APPLICATION NOTES 8, 20, 26
PACKAGING OPTIONS
RI
• 7 TO-220 Plastic Package (PA75CD)
• 7 TO-220 with Staggered Lead Form (PA75CX)
• 7 DDPAK Surface Mount Package (PA75CC)
DESCRIPTION
+VS
1/2
PA75
RS
VO
2I
I
1/2
PA75
LOAD
RS
B
I
–VS
Combining the power op amp (master channel A) and the
unity gain buffer (slave channel B) in a parallel connection
yields a single 2.5A ampliier. RI and RF can set up channel A
for the required gain for the overall circuit. Small values of RS
(sense resistors) are used on the outputs to improve current
sharing characteristics.The master ampliier can be conigured
in inverting or non-inverting gain conigurations.
EXTERNAL
CONNECTIONS
PA75CD
PA75CX
PA75CC
SUB
SUB
A
EQUIVALENT SCHEMATIC ONE CHANNEL
PARALLEL CONNECTION
yields a single 2.5A amplifier
RF
A
VIN
The ampliier design consists of dual power op amp on a single
monolithic die. Side B of the dual monolithic is conigured as a
unity gain buffer to increase the current capability of the master
side A. The use of two PA75 ampliiers provides a cost-effective
solution to applications where multiple ampliiers are required or
a bridge coniguration is needed. Very low harmonic distortion
of .02% THD and low IQ makes the PA75 a good solution for
power audio applications.
The PA75 is available in three standard package designs. The
surface mount version of the PA75, the PA75CC, is an industry
standard non-hermetic plastic 7-pin DDPAK. The through hole
version of the PA75, the PA75CD and PA75CX, are industry
standard non-hermetic plastic 7-pin TO-220 packages. The
PA75CX is staggered lead formed and offers standard 100 mil
spacing. This allows for easier PC board layout. (Please refer to
the CX lead form package drawing for dimension of the PA75CX).
The monolithic ampliier is directly attached to the metal tabs
of the PA75CC, PA75CD, and PA75CX. The metal tabs of the
packages are directly tied to -Vs.
7 PIN TO220
PACKAGE STYLE CD
B
A
SUB
B
A
B
+Vs
CHANNEL A
CHANNEL B
-Vs
www.apexanalog.com
PA75U
Copyright © Apex Microtechnology, Inc. 2012
(All Rights Reserved)
OUT AMP A
-IN AMP A
+IN AMP A
-VS
+IN AMP B
+VS
OUT AMP B
OUT
THERMAL
PROTECT
OUT AMP A
-IN AMP A
+IN AMP A
-VS
+IN AMP B
+VS
OUT AMP B
+IN
-IN
OUT AMP A
-IN AMP A
+IN AMP A
-VS
+IN AMP B
+VS
OUT AMP B
I BIAS
MONITOR
OCT 20121
PA75U REVH
PA75
ABSOLUTE MAXIMUM RATINGS
SUPPLY VOLTAGE, total
OUTPUT CURRENT
POWER DISSIPATION, internal, (per ampliier)
POWER DISSIPATION, internal (both ampliiers)
INPUT VOLTAGE, differential
INPUT VOLTAGE, common mode
JUNCTION TEMPERATURE, max1
TEMPERATURE, pin solder—10 sec max
TEMPERATURE RANGE, storage
OPERATING TEMPERATURE RANGE, case
5V to 40V
SOA
19.5W
28.6W
±VS
+VS, -VS–0.5V
150°C
220°C
–55°C to 150°C
–40°C to 125°C
SPECIFICATIONS
PARAMETER
TEST CONDITIONS 2
MIN
TYP
MAX
UNITS
1
20
100
15
90
90
68
22
mV
µV/°C
nA
V
dB
dB
dB
nV/√Hz
dB
MHz
°
kHz
INPUT
OFFSET VOLTAGE, initial
OFFSET VOLTAGE, vs. temperature
BIAS CURRENT, initial
COMMON MODE RANGE
COMMON MODE REJECTION, DC
POWER SUPPLY REJECTION
CHANNEL SEPARATION
INPUT NOISE VOLTAGE
Full temperature range
Full temperature range
Full temperature range
IOUT = 500mA, ƒ = 1kHz
RS = 100Ω, ƒ = 1 to 100kHz
–VS
60
60
50
GAIN
OPEN LOOP GAIN
GAIN BANDWIDTH PRODUCT
PHASE MARGIN
POWER BANDWIDTH
Full temperature range
AV = 40dB
Full temperature range, RL = 2KΩ, CL = 100pF
VO(P-P) = 28V
89
0.9
100
1.4
65
13.6
1
|VS| - 1.1
|VS| - 1.8
1.4
|VS| - .8
|VS| - 1.4
.02
5
OUTPUT
CURRENT, peak
SLEW RATE
VOLTAGE SWING
VOLTAGE SWING
HARMONIC DISTORTION
Full temperature range
Full Temperature Range, IO = 100mA
Full Temperature Range, IO = 1A
AV = 1, R2 = 50Ω, VO = .5VRMS, ƒ = 1kHz
POWER SUPPLY
VOLTAGE, VSS3
CURRENT, quiescent, total
THERMAL
RESISTANCE,DC junction to case (single)
RESISTANCE,AC junction to case (single)
RESISTANCE,DC junction to case (both)
RESISTANCE,AC junction to case (both)
RESISTANCE,junction to air (CD,CX)
RESISTANCE,junction to air (CC)4
TEMPERATURE RANGE,case
Meets full range speciications
–25
500
+VS–1.3
1.5
A
V/µs
V
V
%
30
8
40
10
V
mA
5.84
4.38
3.97
2.98
60
27
6.42
4.81
4.36
3.27
°C/W
°C/W
°C/W
°C/W
°C/W
°C/W
°C
85
NOTES: 1. Long term operation at the maximum junction temperature will result in reduced product life. Derate internal power dissipation to
achieve high MTTF.
2. Unless otherwise noted, the following conditions apply: ±VS = ±15V, TC = 25°C.
3. +VS and –VS denote the positive and negative supply rail respectively. VSS denotes the total rail-to-rail supply voltage.
4. Heat tab attached to 3/32" FR-4 board with 2oz. copper. Topside copper area (heat tab directly attached) = 1000 sq. mm, backside copper area = 2500 sq. mm, board area = 2500 sq. mm.
2
PA75U
PA75
TYPICAL PERFORMANCE GRAPHS
12
40
8
0
4
-40
0
-80
1.5 0.7 0.9 1.1 1.3 1.5 1.7 1.9
NORMALIZED QUIESCENT CURRENT, IQ (mA)
PHASE MARGIN vs. OUTPUT LOAD CAPACITANCE
1
0.5
0
-0.5
-100
45
150
2.5
2
1.5
1
0.5
0
-100
100
40
20
110
+VS = +15V
-VS = -15V
RL = 2K
-20
1
PULSE RESPONSE
120
100
1K
10
FREQUENCY, f (KHz)
130
10K
-50
0
50
100
TEMPERATURE, TC (°C)
150
OUTPUT VOLTAGE SWING
90
0
35
25
2.0
0.4
0.8
1.2
1.6
0.0
OUTPUT LOAD CAPACITANCE, CL (nF)
2
1.8
1.6
1.4
1.2
1
0.8
0.6
0.4
0.2
0
0.1
0.5
0.9
0.7
0.3
OUTPUT CURRENT, IO (A)
PULSE RESPONSE
10
10
8
8
OUTPUT VOLTAGE, VO (V)
OUTPUT VOLTAGE, VO (V)
-50
0
50
-100
CASE TEMPERATURE, TC (°C)
60
GAIN, A (dB)
PHASE MARGIN, Ф (°)
1.5
3
VOLTAGE GAIN & PHASE vs. FREQUENCY
+VS = +15V
-VS = -15V
RL = 2K
AV = -100
55
NORMALIZED OFFSET VOLTAGE, VOS (mV)
80
2
PHASE, Ф (°)
16
2.5
VOLTAGE DROP FROM SUPPLY, (V)
120
CASE TEMPERATURE, TC (°C)
20
NORMALIZED BIAS CURRENT, IB (mA)
TOTAL SUPPLY VOLTAGE, VS (V)
160
65
OFFSET VOLTAGE
BIAS CURRENT
QUIESCENT CURRENT
24
+VS = +15V
AV = +1
VIN = 10Vp
6
4
2
0
-2
-VS = -15V
RL = 20
fIN = 20kHz
-4
-6
-8
+VS = +15V
AV = +1
VIN = 10Vp
6
4
2
0
-2
-4
-6
-VS = -15V
fIN = 1kHz
-8
-10
-10
0
PA75U
10
20
30 40 50
TIME, t (µs)
60
70
0
200 400 600 800 1000 1200 1400
TIME, t (µs)
3
PA75
GENERAL
THERMAL CONSIDERATIONS
Please read Application Note 1 “General Operating Considerations” which covers stability, supplies, heatsinking, mounting,
SOA interpretation, and speciication interpretation. Visit www.
apexanalog.com for design tools that help automate tasks such
as calculations for stability, internal power dissipation, heatsink
selection; Apex Microtechnology’s complete Application Notes
library; Technical Seminar Workbook; and Evaluation Kits.
The PA75CD and CX have a large exposed copper heat
tab to which the monolithic is directly attached. The PA75CD
and CX may require a thermal washer, which is electrically
insulating since the tab is directly tied to -VS. This can result
in a thermal impedance RCS of up to 1˚C/W or greater.
The PA75CC has a large exposed integrated copper heatslug
to which the monolithic is directly attached. The solder connection of the heatslug to a minimum of 1 square inch foil area of
the printed circuit board will result in thermal performance of
25°C/W junction to air rating of the PA75CC. Solder connection
to an area of 1 to 2 square inches of foil is required for minimal
power applications
Where the PA75CC is used in higher power applications,
it is necessary to use surface mount techniques of heatsinking. Surface mount techniques include the use of a surface
mount fan in combination with a surface mount heatsink on
the backside of the FR4/ PC board with through hole thermal
vias. Other highly thermal conductive substrate board materials
are available for maximum heat sinking.
POWER DERATING
All monolithic power
+
op amps use output
stage topologies that
present special stabil–
C SN
ity problems. This is
0.01µF
primarily due to noncomplementary (both
R SN
d ev i c e s a re N P N )
10Ω
output stages with a
mismatch in gain and
phase response for
different polarities of
output current. It is dificult for the op amp manufacturer to optimize compensation
for all operating conditions. For applications with load current
exceeding 300ma, oscillation may appear. The oscillation may
occur only with the output voltage swing at the negative or
positive half cycle. Under most operating and load conditions
acceptable stability can be achieved by providing a series RC
snubber network connected from the output to ground. The
recommended component values of the network are,RSN =
10Ω and CSN = 0.01µF. Please refer to Application Note 1 for
further details.
SAFE OPERATING AREA (SOA)
OUTPUT CURRENT FROM +VS or -VS (A)
The SOA curves combine the effect of all limits for this power
op amp. For a given application, the direction and magnitude
of the output current should be calculated or measured and
checked against the SOA curves. This is simple for resistive
loads but more complex for reactive and EMF generating loads.
SOA
10.0
TWO AMPLIFIERS
LOADED
DC, TC = 25°C
35
INTERNAL POWER DISSIPATION, P (W)
STABILITY CONSIDERATIONS
TWO AMPLIFIERS
LOADED
30
25
ONE AMPLIFIER
LOADED
20
15
10
5
0
0
25
50
75
100
CASE TEMPERATURE, TC (°C)
125
MOUNTING PRECAUTIONS
1. Always use a heat sink. Even unloaded the PA75 can dissipate up to .4 watts.
2. Avoid bending the leads. Such action can lead to internal
damage.
3. Always fasten the tab of the CD and CX package to the
heat sink before the leads are soldered to ixed terminals.
4. Strain relief must be provided if there is any probability of
axial stress to the leads.
1.0 ONE AMPLIFIER
LOADED
DC, TC = 85°C
0.1
1.0
10.0
100.0
SUPPLY TO OUTPUT DIFFERENTIAL VOLTAGE, VS - VO (V)
4
PA75U
PA75
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 [email protected]
International customers can also request support by contacting their local Apex Microtechnology Sales Representative.
To ind 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 speciications or products mentioned herein to improve reliability. This document is the property of Apex Microtechnology and by furnishing this information, 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 information 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 UNDERSTOOD 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.
www.apexanalog.com
PA75U
Copyright © Apex Microtechnology, Inc. 2012
(All Rights Reserved)
OCT 20125
PA75U REVH
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