½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½
½½½½
½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½ ½
½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½
FEATURES
• LOW COST
• WIDE BANDWIDTH - 1.1 Mhz
• HIGH OUTPUT CURRENT - 1A PER AMPLIFIER
• 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
20-PIN PSOP
PACKAGE STYLE DK
against thermal overloads. Care must be exercised to observe
the Safe Operating Area (SOA) curve and proper heatsinking
will ensure maximum reliability.
The wide common mode input range includes the nega-
tive rail, facilitating single supply applications. This makes it
possible to have a ground-based input driving a single supply
amplifier with ground acting as the second or bottom supply
of the amplifier.
FIGURE 2.
Bi-directional speed control from a single supply
½½
½½
½½
½½
½½½½
APPLICATIONS
• HALF AND FULL BRIDGE MOTOR DRIVERS
• AUDIO POWER AMPLIFIER
Stereo
- 11.3W RMS per amplifier
Bridge
- 22.6W RMS per two amplifiers
Two Bridges - 45.2W RMS per package
• 3 PHASE MOTOR DRIVER
3 Channels - 33.9W RMS per package
• IDEAL FOR SINGLE SUPPLY SYSTEMS
5V
- Peripherals
12V
- Automotive
28V
- Avionic
• PACKAGING OPTIONS
20-Pin PSOP, JEDEC MO-166-AB (PA62DK)
½½½½½
½½½½½
½
½½½½½½½½
½
½
½
½
½
½½½½½½½½
½
½½
½½
DESCRIPTION
The amplifier design is a dual power op amp on a single
monolithic die. The quad output PA62 combines two dual op
amp die in a single PSOP package. This approach provides
a cost-effective solution to applications where multiple ampli-
fiers are required or a bridge configuration is needed. Four
independent amplifiers coupled with low quiescent current and
very low THD makes this an ideal low-distortion 4-channel
audio amplifier for applications such as laptops and computer
speakers.
The quad output PA62DK is available in a surface mount
20-pin PSOP, JEDEC MO-166-AB package. The heat slug
of the DK package is tied to -Vs.
Built-in thermal shutdown allows the devices to self-protect
½½½
½½½½½½
½½½½½½½
TYPICAL APPLICATION
R1 and R2 set up Amplifier A as non-inverting. Amplifier
B is set up as a unity gain inverter driven from the output of
Amplifier A. Note that Amplifier B inverts the signals about
the reference node, which is set at mid-supply by R5 and
R6. When the command input is midrange, so is the output
of Amplifier A. Since this is also equivalent to the reference
node voltage, the output of Amplifier B is the same resulting
in 0V across the motor. Inputs more positive than 5V result in
motor current flow from left to right (see Figure 2). Inputs less
than 5V drive the motor in the opposite direction.
The amplifiers are especially well-suited for applications
such as this. The extended common mode range allows
command inputs as low as 0V. The output swing lets it drive
within 2V of the supply at an output of 1A. This means that
a command input that ranges from 0 to 10V will drive a 24V
motor from full scale CCW to full scale CW at ±1A.
FIGURE 3.
External Connections
½
½½
½½½
½½½
½½½
½½½½½½½
½½½½½½½
½½½
FIGURE 1.
Equivalent schematic (one channel)
APEX MICROTECHNOLOGY CORPORATION • TELEPHONE (520) 690-8600 • FAX (520) 888-3329 • ORDERS (520) 690-8601 • EMAIL prodlit@apexmicrotech.com
½
½
½
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½½½½½½½½
½½½½½½
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½
½½
½
½½½
½
½
½
½
½
½
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½
½½
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½½
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½½½½½½½½
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1
PA62
ABSOLUTE MAXIMUM RATINGS
SUPPLY VOLTAGE, total
OUTPUT CURRENT
POWER DISSIPATION, internal (1 amplifier)
POWER DISSIPATION, internal (2 amplifiers)
4
POWER DISSIPATION, internal (3 amplifiers)
4
POWER DISSIPATION, internal (4 amplifiers)
4
INPUT VOLTAGE, differential
INPUT VOLTAGE, common mode
JUNCTION TEMPERATURE, max
1
TEMPERATURE, pin solder - 10 secs max.
TEMP RANGE STORAGE
OPERATING TEMP RANGE, case
1
MIN
ABSOLUTE MAXIMUM RATINGS
SPECIFICATIONS
SPECIFICATIONS (PER AMPLIFIER)
PARAMETER
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
GAIN
OPEN LOOP GAIN
GAIN BANDWIDTH PRODUCT
PHASE MARGIN
POWER BANDWIDTH
OUTPUT
CURRENT, peak
SLEW RATE
VOLTAGE SWING
VOLTAGE SWING
HARMONIC DISTORTION
POWER SUPPLY
VOLTAGE, Vss
3
CURRENT, quiescent +Vs (A/B)
CURRENT, quiescent +Vs (C/D)
CURRENT, quiescent total
THERMAL
RESISTANCE, junction to case
DC, 1 amplifier
DC, 2 amplifiers
4
DC, 3 amplifiers
4
DC, 4 amplifiers
4
AC, 1 amplifier
AC, 2 amplifiers
4
AC, 3 amplifiers
4
AC, 4 amplifiers
4
RESISTANCE, junction to air
6
Notes
5V to 40V
SOA
15.88W
24.21W
36.90W
45.20W
±Vs
+Vs,-Vs-.5V
150°C
220°C
-55°C to 150°C
-40°C to 125°C
TYP
1
20
100
MAX
15
500
+Vs
UNTS
mV
µV/°C
nA
V
dB
dB
dB
nV/√Hz
dB
MHz
°C
kHz
A
V/µS
V
V
%
TEST CONDITIONS
1,2
Full temp range
Full temp range
Full temp range
I
OUT
= 500mA, ƒ = 1kHz
R
S
= 100Ω, ƒ = 1 to 100kHz
V
O
= ±10V, R
L
= 2.0KΩ
ƒ = 100kHz, C
L
= 100pF, R
L
= 2.0KΩ
Full temp range
V
O
(P-P) = 28V
-Vs
60
60
50
90
90
68
22
100
0.9
65
13.6
89
1.4
1.0
Full temp range, I
O
= 100mA
Full temp range, I
O
= 1A
A
V
= 1, R
L
= 50Ω,
V
O
= .5VRMS, ƒ = 1kHz
1.0
|Vs| -1.1
|Vs| -1.8
1.4
|Vs| -0.8
|Vs| -1.4
.02
5
30
8
8
16
40
10
10
20
V
mA
mA
mA
7.16
4.69
3.08
2.51
5.37
3.52
2.31
1.89
25
7.87
5.16
3.39
2.77
5.90
3.87
2.54
2.07
°C/W
°C/W
°C/W
°C/W
°C/W
°C/W
°C/W
°C/W
°C/W
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: ±V
S
= ±15V, T
C
=25°C.
3. +V
S
and -V
S
denote the positive and negative rail respectively. V
SS
denotes total rail-to-rail supply.
4. Rating applies when power dissipation is equal in each of the amplifiers. Power and thermal ratings are based on two separate
dual monolithic power op-amps on one integrated copper heatslug. Amplifiers A and B are combined on one monolithic die while
amplifiers C and D are on the other.
5. If -V
S
is disconnected before +V
S
, a diode between -V
S
and ground is recommended to avoid damage.
6. Rating applies when the heatslug of the DK package is soldered to a minimum of 1 square inch foil area of a printed circuit
board.
APEX MICROTECHNOLOGY CORPORATION • 5980 NORTH SHANNON ROAD • TUCSON, ARIZONA 85741 • USA • APPLICATIONS HOTLINE: 1 (800) 546-2739
2
TYPICAL PERFORMANCE
GRAPHS
PA62
½½½½½½½½½½½½½½½½½½½½½½½
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½
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½
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½
½½½ ½½½ ½½½ ½½½ ½½½½ ½½½½ ½½½½
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½
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½
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APEX MICROTECHNOLOGY CORPORATION • TELEPHONE (520) 690-8600 • FAX (520) 888-3329 • ORDERS (520) 690-8601 • EMAIL prodlit@apexmicrotech.com
3
PA62
TYPICAL APPLICATION (CONT.)
The PA62 can be used in a three amplifier configuration for
a three phase inverter or motor as shown in Figure 4.
GENERAL
CONSIDERATIONS
SAFE OPERATING AREA (SOA)
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. The following guidelines may save extensive analyti-
cal efforts.
½
½
½
THERMAL CONSIDERATIONS
The PA62DK has a large exposed integrated copper heatslug
to which the monolithic is directly attached. The solder connec-
tion 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 PA62DK. Solder connec-
tion to an area of 1 to 2 square inches of foil is required for
minimal power applications
Where the PA62DK is used in higher power applications,
it is necessary to use surface mount techniques of heatsink-
ing. 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.
The Power Derating graph shown below assumes that the
power dissipation is equal in each of the amplifiers. Power and
thermal ratings are based on two separate dual monolithic
power op amps on one integrated copper heat slug. Amps A
and B are combined on one monolithic die while amps C and
D are combined on the other. This multi chip configuration
provides superior thermal performance by isolating each of
the dual amplifiers. When loading either of the dual amplifiers
it is possible to achieve better thermal performance by loading
any combination of amplifiers (A or B) + (C or D).
½½½½½½½½½½½½½½
½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½
½½½½
½½½½
½½½½½½½½½½½½½½½½½½½½½½½½½½½½
½½½½½½½½½½½½½½½½½½½½½½½½
FIGURE 4.
3 Phase Inverter
GENERAL
Please read Application Note 1 "General Operating Consider-
ations" which covers stability, supplies, heatsinking, mounting,
SOA interpretation, and specification interpretation. Visit www.
apexmicrotech.com for design tools that help automate tasks
such as calculations for stability, internal power dissipation,
heatsink selection; Apex's complete Application Notes library;
Technical Seminar Workbook; and Evaluation Kits.
STABILITY CONSIDERATIONS
All monolithic power op amps use output stage topologies
that present special stability problems. This is primarily due to
non-complementary (both devices are NPN) output stages with
a mismatch in gain and phase response for different polarities
of output current. It is difficult for the op amp manufacturer to
optimize compensation for all operating conditions.
½½½
½½½½½½½½½½½½½½½½½½½½½½
½
½½½½½½
½
½½½½½
½½
½½
½½
½½
½½
½½½
½½
½½
½½½
½½
½½
½½
½½
½½½
½½
½½½
½½½½
½½½
½½½
½½
½½½½½½½½½½½½½½½½½½½
½½½½½½½½½½½½½½½½½½½
½½½½½½½½½½½½½½½½½½½
½½½½½½½½½½½½½½½½½½½
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½
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½
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½
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½
½
½
½½
½½
½½½
½½
½½½½½½½½½½½½½½½½½½½½½½½
½
½½½½½
½½½
MOUNTING PRECAUTIONS
½½½½½
½
½½½½½½½
½½½
½
½½
½½
1. Always use a heat sink. Even unloaded the PA62DK can
dissipate up to .8 watts.
2. Avoid bending the leads. Such action can lead to internal
damage.
½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½
½
½½½½
½
½½½½
This data sheet has been carefully checked and is believed to be reliable,
SHANNON ROAD •
is assumed
ARIZONA 85741 • USA • APPLICATIONS
are subject
1 (800) 546-2739
APEX MICROTECHNOLOGY CORPORATION • 5980 NORTH
however, no responsibility
TUCSON,
for possible inaccuracies or omissions. All specifications
HOTLINE:
to change without notice.
4
PA62U REV C OCTOBER 2005 © 2005 Apex Microtechnology Corp.
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