錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;
錕?frac12;錕?frac12;錕?frac12;錕?frac12;
錕?frac12; 錕?frac12; 錕?frac12; 錕?frac12; 錕?frac12; 錕?frac12; 錕?frac12; 錕?frac12; 錕?frac12; 錕?frac12; 錕?frac12; 錕?frac12; 錕?frac12; 錕?frac12; 錕?frac12;
錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕斤拷½錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;
FEATURES
鈥?LOW COST
鈥?WIDE BANDWIDTH - 1.1 Mhz
鈥?HIGH OUTPUT CURRENT - 1A PER AMPLIFIER
鈥?WIDE COMMON MODE RANGE Includes negative supply
鈥?WIDE SUPPLY VOLTAGE RANGE Single supply: 5V to
40V Split supplies: 鹵 2.5V to 鹵 20V
鈥?LOW QUIESCIENT CURRENT
鈥?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
ampli鏗乪r with ground acting as the second or bottom supply
of the ampli鏗乪r.
FIGURE 2.
Bi-directional speed control from a single supply
錕?frac12;錕?frac12;
錕?frac12;錕?frac12;
錕?frac12;錕?frac12;
錕?frac12;錕?frac12;
錕?frac12;錕?frac12;錕?frac12;錕?frac12;
APPLICATIONS
鈥?HALF AND FULL BRIDGE MOTOR DRIVERS
鈥?AUDIO POWER AMPLIFIER
Stereo
- 11.3W RMS per ampli鏗乪r
Bridge
- 22.6W RMS per two ampli鏗乪rs
Two Bridges - 45.2W RMS per package
鈥?3 PHASE MOTOR DRIVER
3 Channels - 33.9W RMS per package
鈥?IDEAL FOR SINGLE SUPPLY SYSTEMS
5V
- Peripherals
12V
- Automotive
28V
- Avionic
鈥?PACKAGING OPTIONS
20-Pin PSOP, JEDEC MO-166-AB (PA62DK)
錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;
錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;
錕?frac12;
錕?frac12;
錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;
錕?frac12;
錕?frac12;
錕?frac12;
錕?frac12;
錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;
錕?frac12;
錕?frac12;錕?frac12;
錕?frac12;錕?frac12;
DESCRIPTION
The ampli鏗乪r 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-
鏗乪rs are required or a bridge con鏗乬uration is needed. Four
independent ampli鏗乪rs coupled with low quiescent current and
very low THD makes this an ideal low-distortion 4-channel
audio ampli鏗乪r 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
錕?frac12;錕?frac12;錕?frac12;
錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;
錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;
TYPICAL APPLICATION
R1 and R2 set up Ampli鏗乪r A as non-inverting. Ampli鏗乪r
B is set up as a unity gain inverter driven from the output of
Ampli鏗乪r A. Note that Ampli鏗乪r 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 Ampli鏗乪r A. Since this is also equivalent to the reference
node voltage, the output of Ampli鏗乪r B is the same resulting
in 0V across the motor. Inputs more positive than 5V result in
motor current 鏗俹w from left to right (see Figure 2). Inputs less
than 5V drive the motor in the opposite direction.
The ampli鏗乪rs 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 鹵1A.
FIGURE 3.
External Connections
錕?frac12;
錕?frac12;錕?frac12;
錕?frac12;錕?frac12;錕?frac12;
錕?frac12;錕?frac12;錕?frac12;
錕?frac12;錕?frac12;錕?frac12;
錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;
錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;
錕?frac12;錕?frac12;錕?frac12;
FIGURE 1.
Equivalent schematic (one channel)
APEX MICROTECHNOLOGY CORPORATION 鈥?TELEPHONE (520) 690-8600 鈥?FAX (520) 888-3329 鈥?ORDERS (520) 690-8601 鈥?EMAIL prodlit@apexmicrotech.com
錕?frac12;
錕?frac12;
錕?frac12;
錕?frac12;錕?frac12;錕?frac12;
錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;
錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;
錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;
錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;
錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;
錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;
錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;
錕?frac12;錕?frac12;
錕?frac12;錕?frac12;錕?frac12;
錕?frac12;
錕?frac12;錕?frac12;
錕?frac12;
錕?frac12;
錕?frac12;
錕?frac12;
錕?frac12;
錕?frac12;
錕?frac12;
錕?frac12;錕?frac12;錕?frac12;
錕?frac12;
錕?frac12;錕?frac12;
錕?frac12;錕?frac12;錕?frac12;
錕?frac12;錕?frac12;
錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;
錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;
錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;
錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;
錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;
錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;
錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;錕?frac12;
錕?frac12;錕?frac12;錕?frac12;
1
1
2
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