SA07U Apex Microtechnology Corporation, SA07U Datasheet
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SA07U
Manufacturer Part Number
SA07U
Description
PWM Amplifier
Manufacturer
Apex Microtechnology Corporation
Datasheet
1.SA07U.pdf
(5 pages)
FEATURES
• 500kHz SWITCHING
• FULL BRIDGE OUTPUT 5-40V (80V P-P)
• 5A OUTPUT
• 1 IN
• FAULT PROTECTION
• SHUTDOWN CONTROL
• SYNCHRONIZABLE CLOCK
• HERMETIC PACKAGE
APPLICATIONS
• HIGH FIDELITY AUDIO AMPLIFIER
• BRUSH TYPE MOTOR CONTROL
• VIBRATION CANCELLING AMPLIFIER
DESCRIPTION
full bridge output circuit provides 5 amps of continuous drive
current for applications as diverse as high fidelity audio and
brush type motors. Clock output and input pins can be used for
synchronization with other amplifiers or an externally gener-
ated clock. An integrator amplifier is provided. Direct access
to the pwm input is provided for connection to digital motion
control circuits. Protection circuits guard against thermal over-
loads as well as shorts to supply or ground. The current limit
is programmable with one or two external resistors depending
on the application. A shutdown input disables all output bridge
drivers. The 18 pin steel package is hermetically sealed.
BLOCK DIAGRAM AND
TYPICAL APPLICATION
CONNECTIONS
HIGH FIDELITY
AUDIO
M I C R O T E C H N O L O G Y
APEX MICROTECHNOLOGY CORPORATION • TELEPHONE (520) 690-8600 • FAX (520) 888-3329 • ORDERS (520) 690-8601 • EMAIL prodlit@apexmicrotech.com
The SA07 amplifier is a 40 volt, 500kHz PWM amplifier. The
2
FOOTPRINT
SIGNAL
18
17
5
6
7
4
3
2
+PWM
RAMP/–PWM
CLK OUT
CLK IN
GND
INT OUT
INT +
INT –
H T T P : / / W W W . A P E X M I C R O T E C H . C O M
OSC
100pF
THERMAL,
PROTECT.
CIRCUIT
18K
SHORT
CLK/2
PULSE WIDTH MODULATION AMPLIFIER
SA07
R
D
G
D
R
R
B
E
V
E
I
I
INT OUT*
RAMP/–PWM
EXTERNAL CONNECTIONS
Case tied to Pin 7. Allow no current in case. Bypassing of supplies is
required. Package is Apex DIP6. See Outline Dimensions/Packages. If
+PWM > RAMP then A OUT > B OUT.
* See text.
SA07
+PWM
5V OUT
–INT
+INT
GND
NC
NC
( 8 0 0 ) 5 4 6 - A P E X
5V
REG.
5V
ILIM/SHDN
I SENSE A
I SENSE B
5V OUT
1
2
3
4
5
6
7
8
9
B OUT
A OUT
+V
Vcc
S
12
14
11
15
13
10
16
1
R
C
FILTER
FILTER
( 8 0 0 ) 5 4 6 - 2 7 3 9
LOAD
18
17
16
15
14
13
12
11
10
1K
R
R
SHDN
LIMIT
Ilim/SHDN
Isense B
B OUT
+Vs
A OUT
Isense A
Vcc
CLK OUT*
CLK IN
Rlimit*
*
Rlimit*
*