MP240FC Cirrus Logic Inc, MP240FC Datasheet - Page 6

• Manufacturer Part Number: MP240FC
• Description: IC OPAMP 200V 20A OPEN 42DIP
• Manufacturer: Cirrus Logic Inc
• Series: Apex Precision Power™r

Specifications of MP240FC

• Package / Case: 42-DIP Module
• Amplifier Type: Power
• Number Of Circuits: 1
• Slew Rate: 14 V/µs
• Gain Bandwidth Product: 1.8MHz
• Current - Input Bias: 100pA
• Voltage - Input Offset: 1000µV
• Current - Supply: 16.5mA
• Current - Output / Channel: 20A
• Voltage - Supply, Single/dual (±): 30 V ~ 200 V, ±15 V ~ 100 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Through Hole
• Description/function: Audio Amplifiers
• Product: Audio Modules
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• For Use With: 598-1396 - KIT EVAL FOR MP230FC/MP240FC
• Output Type: -
• -3db Bandwidth: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 598-1411; MP240FC

MP240
select C
gains than with normal operation due to the increased capacitance of the output transistors when the output signal
swings close to the supply rails.
overvoltaGe Protection
Although the MP240 can withstand differential input voltages
up to ±25V, in some applications additional external protec-
tion may be needed. 1N4148 signal diodes connected anti-
parallel across the input pins is usually sufficient. In more
demanding applications where bias current is important
diode connected JFETs such as 2N4416 will be required.
See Q1 and Q2 in Figure 1. In either case the differential
input voltage will be clamped to ±0.7V. This is sufficient
overdrive to produce the maximum power bandwidth. Some
applications will also need over-voltage protection devices
connected to the power supply rails. Unidirectional zener di-
ode transient suppressors are recommended. The zeners
clamp transients to voltages within the power supply rating
and also clamp power supply reversals to ground. Whether
the zeners are used or not the system power supply should
be evaluated for transient performance including power-on
overshoot and power-off polarity reversals as well as line
regulation. See Z1 and Z2 in Figure 1.
PoWer sUPPlY bYPassinG
Bypass capacitors to power supply terminals +V
local parasitic oscillation in the output stage of the MP240. Use electrolytic capacitors at least 10µF per output amp
required. Bypass the electrolytic capacitors with high quality ceramic capacitors 0.1µF or greater. In most applica-
tions power supply terminals +V
bypassed internally it is recommended to bypass +V
40 must be connected to the system signal ground.
cUrrent liMit
The two current limit sense lines are to be connected directly
across the current limit sense resistor. For the current limit
to work correctly pin 36 must be connected to the amplifier
output side and pin 35 connected to the load side of the cur-
rent limit resistor R
will bypass any parasitic resistances R
and solder joints as well as internal amplifier losses. The
current limiting resistor may not be placed anywhere in the
output circuit except where shown in Figure 2. The value of
the current limit resistor can be calculated as follows: R
= .65/I
boost oPeration
With the boost feature the small signal stages of the amplifier are operated at a higher supply voltages than the
amplifier’s high current output stage. +V
tional 10V on the +V
region and improve the output voltage swing for extra efficient operation when required. When the boost feature
is not needed +V
voltages less than +V

LIMIT
C
. A 200V NPO (COG) type capacitor is required. Boost operation requires more compensation or higher
S
and -V
LIM
B
and -V
S
as shown in Figure 2. This connection
and -V
S
are connected to +V
B
pin is sufficient to allow the small signal stages to drive the output stage into the triode
S
respectively.
B
and -V
P
B
B
, formed by socket
(pin 1) and -V
will be connected to +V
B
S
and -V
and -V
B
P r o d u c t I n n o v a t i o n F r o m
and -V
B
B
S
(pin 38) are connected to the small signal stages. An addi-
respectively. +V
must be connected physically close to the pins to prevent
LIM
B
with 0.1µF externally. Additionally ground pins 2 and
S
and -V
B
S
and -V
respectively. Although +V
B
must not be operated at supply
MP240U
B
and -V
B
are