APEX MICROTECHNOLOGY CORPORATION • TELEPHONE (520) 690-8600 • FAX (520) 888-3329 • ORDERS (520) 690-8601 • EMAIL prodlit@apexmicrotech.com

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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

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

PACKAGING OPTIONS

• 20-Pin PSOP, JEDEC MO-166-AB (PA60DK)

• 12-Pin Molded Plastic SIP (PA60EU)

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

low power audio applications such as laptops and computer

speakers.

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

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.

FIGURE 2. Bi-directional speed control from a single supply

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

20-PIN PSOP

PACKAGE STYLE DK

12-PIN SIP

PACKAGE STYLE EU