HIGH VOLTAGE POWER OPERATIONAL AMPLIFIERS
PA60
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HTTP://WWW.APEXMICROTECH.COM (800) 546-APEX (800) 546-2739
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
12-pin SIP
20-pin PSOP
PACKAGE STYLE DX
PACKAGE STYLE DK
APPLICATIONS
• HALF AND FULL BRIDGE MOTOR DRIVERS
• AUDIO POWER AMPLIFIER
Stereo - 13.6W RMS per channel
Bridge - 27.2W RMS per 2 channels
• IDEAL FOR SINGLE SUPPLY SYSTEMS
surface mount version of the PA60, the PA60DK, is available
in a 20-Pin PSOP, JEDEC MO-166-AB package. The heat
slug of the DK package is tied to -VS.
R3
R4
R2
5V
12V
28V
- Peripherals
- Automotive
- Avionic
+28V
R1
_
_
A
B
R5
1/2 PA60
+
M
1/2 PA60
+
PACKAGING OPTIONS
• 20-Pin PSOP, JEDEC MO-166-AB (PA60DK)
• 12-Pin Molded Plastic SIP (PA60DX)
INPUT
0-10V
R6
DESCRIPTION
FIGURE 2. Bi-directional speed control from a single supply
The amplifier design is a dual power op amp on a single
monolithic die. This approach provides a cost-effective solu-
tion to applications where multiple amplifiers are required or a
bridge configuration is needed. Very low harmonic distortion
of 0.02% THD and low IQ makes the PA60 a good solution for
low power audio applications such as laptops and computer
speakers.
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
currentflowfromlefttoright(seeFigure2). Inputslessthan5V
drive the motor in the opposite direction.
+Vs
I BIAS
MONITOR
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.
+IN
-IN
OUT
THERMAL
PROTECT
1
20
-Vs
NC
-IN(A)
+IN(A)
NC
+IN(B)
-IN(B)
NC
-Vs
NC
OUT(A)
NC
+Vs
+Vs
NC
OUT(B)
NC
NC
SUB
+
+
_
+
A
-
B
-
A
B
SUB
SUB
3
SUB
9 10 11 12
1
2
4
5
6
7
8
-Vs
+
_
NC
NC
FIGURE 1. Equivalent schematic (one channel)
10
11
The dual output PA60 is available in two industry-standard
packages.ThethroughholeversionofthePA60,thePA60DX,
is available in a 12-Pin Molded Plastic SIP with standard 100
mil spacing. The heat tab of DX package is tied to -VS. The
PA60DX
PA60DK
FIGURE 3. External connections
APEX MICROTECHNOLOGY CORPORATION • TELEPHONE (520) 690-8600 • FAX (520) 888-3329 • ORDERS (520) 690-8601 • EMAIL prodlit@apexmicrotech.com
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