P r o d u c t
I
PB58A
o
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F r o m
PB58,
I
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PB58 • PB58A
PB58 • PB58A
Power Booster Amplifier
FEATURES
• WIDE SUPPLY RANGE — ±15V to ±150V
• HIGH OUTPUT CURRENT —
1.5A Continuous (PB58)
2.0A Continuous (PB58A)
• VOLTAGE AND CURRENT GAIN
• HIGH SLEW — 50V/µs Minimum (PB58)
75V/µs Minimum (PB58A)
• PROGRAMMABLE OUTPUT CURRENT LIMIT
• HIGH POWER BANDWIDTH — 320 kHz Minimum
• LOW QUIESCENT CURRENT — 12mA Typical
• EVALUATION KIT — See EK50
8-PIN TO-3
PACKAGE STYLE CE
EQUIVALENT SCHEMATIC
3
+Vs
Q1
APPLICATIONS
• HIGH VOLTAGE INSTRUMENTATION
• Electrostatic TRANSDUCERS & DEFLECTION
• Programmable Power Supplies Up to 280V p-p
Q2
Q3
IN
4
GAIN 6.2K
7
50K
COM
5
COMP
8
Q9
Q10
3.1K
Q7
Q11
Q8
Q4
Q6
Q5
DESCRIPTION
The PB58 is a high voltage, high current amplifier designed
to provide voltage and current gain for a small signal, general
purpose op amp. Including the power booster within the feed-
back loop of the driver amplifier results in a composite amplifier
with the accuracy of the driver and the extended output voltage
range and current capability of the booster. The PB58 can also
be used without a driver in some applications, requiring only
an external current limit resistor to function properly.
The output stage utilizes complementary MOSFETs, pro-
viding symmetrical output impedance and eliminating second
breakdown limitations imposed by Bipolar Transistors. Internal
feedback and gainset resistors are provided for a pin-strapable
gain of 3. Additional gain can be achieved with a single external
resistor. Compensation is not required for most driver/gain
configurations, but can be accomplished with a single external
capacitor. Enormous flexibility is provided through the choice
of driver amplifier, current limit, supply voltage, voltage gain,
and compensation.
This hybrid circuit utilizes a beryllia (BeO) substrate, thick
film resistors, ceramic capacitors and semiconductor chips to
maximize reliability, minimize size and give top performance.
Ultrasonically bonded aluminum wires provide reliable inter-
connections at all operating temperatures. The 8-pin TO-3
package is electrically isolated and hermetically sealed using
one-shot resistance welding. The use of compressible isolation
washers voids the warranty.
OUT
1
2
CL
–Vs
6
EXTERNAL CONNECTIONS
+V
S
IN 4
TOP VIEW
COM
5
–V
S
6
7
GAIN
8
COMP
C
C
CL
3
2
1
OUT
R
CL
TYPICAL APPLICATION
C
F
R
F
Figure 1. Inverting
composite amplifier.
+Vs
IN
COM
PB58
OUT
C
C
R
G
R
L
R
CL
V
IN
R
I
+15V
OP
AMP
R
G
–15V
–Vs
PB58U
http://www.cirrus.com
Copyright © Cirrus Logic, Inc. 2009
(All Rights Reserved)
MAY 2009
1
APEX − PB58UREVK
CIRRUS [ CIRRUS LOGIC ]
