SA07 Datasheet, PDF (1/5 Pages) Cirrus Logic – PULSE WIDTH MODULATION AMPLIFIERS

���������������
���������������������������������
����
��������������������������������������������������������������
FEATURES
• 500kHz SWITCHING
• FULL BRIDGE OUTPUT 5-40V (80V P-P)
• 5A OUTPUT
• 1 IN² FOOTPRINT
• FAULT PROTECTION
• SHUTDOWN CONTROL
• SYNCHRONIZABLE CLOCK
• HERMETIC PACKAGE
APPLICATIONS
• HIGH FIDELITY AUDIO AMPLIFIER
• BRUSH TYPE MOTOR CONTROL
• VIBRATION CANCELLING AMPLIFIER
DESCRIPTION
The SA07 amplifier is a 40 volt, 500kHz PWM amplifier. The
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 generated
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 overloads
as well as shorts to supply or ground. The current limit is pro-
grammable 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
������
����
�
��������
�����
�������
��������
�
��������� _{���}
�����
�������
��
���
�����
������
��
���
�
�������
�
�����
�
�����
�
�
�
�
�
�
�
�
�
�
�
�
�
����
EXTERNAL CONNECTIONS
18-PIN DIP
PACKAGE STYLE EL
������
�
����
�
����
�
��������
�
����
�
���������
�
���
�
��
�
��
�
��
��������
��
������
��
�_{���}�����
��
�_{�����}��
��
����� ^������^�
��
��_�
�
��
��
�����
�_{�����}��
��
� ^{��� �������}
�����������
Case tied to Pin 7. Allow no current in case. Bypassing of sup-
plies is required. If +PWM > RAMP then A OUT > B OUT.
������ _�
��_�
��
���
��
����
�����
��
��
�����
��
��
���������
��
���������
��
��
���������
����
�_{�������}
�_{�����}
�_{�������} ��
��_{������}
APEX MICROTECHNOLOGY CORPORATION • TELEPHONE [phone] • FAX [phone] • ORDERS [phone] • EMAIL [e-mail]
1