FEATURES
• RoHS COMPLIANT
• 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
PACKAGE STYLE EU
20-PIN PSOP
PACKAGE STYLE DK
APPLICATIONS
• HALF AND FULL BRIDGE MOTOR DRIVERS
• AUDIO POWER AMPLIFIER
Stereo - 15.91W RMS per channel
Bridge - 31.82W RMS per 2 channels
• IDEAL FOR SINGLE SUPPLY SYSTEMS
5V
- Peripherals
12V
- Automotive
28V
- Avionic
mil spacing. The heat tab of EU package is tied to -VS. The
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.
PACKAGING OPTIONS
• 20-Pin PSOP, JEDEC MO-166-AB (PA60DK)
• 12-Pin Molded Plastic SIP (PA60EU)
FIGURE 2.
Bi-directional speed control from a single supply
DESCRIPTION
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 I
Q
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 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 1.
Equivalent schematic (one channel)
The dual output PA60 is available in two industry-standard
packages. The through hole version of the PA60, the PA60EU,
is available in a 12-Pin Molded Plastic SIP with standard 100
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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