PB51 Datasheet, PDF (1/4 Pages) Cirrus Logic – POWER OPERATIONAL AMPLIFIER

P r o d u c t IInnnnoovvaa t i o n FFrroomm
PBP5B511
Power Booster Amplifier
FEATURES
• WIDE SUPPLY RANGE — ±15V to ±150V
• HIGH OUTPUT CURRENT —
1.5A Continuous (PB51), 2.0A Continuous (PB51A)
• VOLTAGE AND CURRENT GAIN
• HIGH SLEW —
50V/µs Minimum (PB51)
75V/µs Minimum (PB51A)
• PROGRAMMABLE OUTPUT CURRENT LIMIT
• HIGH POWER BANDWIDTH — 320 kHz Minimum
• LOW QUIESCENT CURRENT — 12mA Typical
• EVALUATION KIT — EK29
APPLICATIONS
• HIGH VOLTAGE INSTRUMENTATION
• ELECTROSTATIC TRANSDUCERS & DEFLECTION
• PROGRAMMABLE POWER SUPPLIES UP TO 280V P-P
DESCRIPTION
The PB51 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 PB51 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 12-pin Power
SIP package is electrically isolated.
TYPICAL APPLICATION
C_F
V_IN R_I
R_F
+15V
+Vs
R_CL
OP
AMP
IN
COM ^PB51
–15V
–Vs
OUT
C_C
R_L
R_G
12-pin SIP
PACKAGE STYLE DP
Formed leads available. See package styles ED & EE
EQUIVALENT SCHEMATIC
8 ^+VS
Q2
Q1
IN 1
GAIN 6
COM 2
Q4
Q6
3.1K
Q11
Q3
Q5
12 OUT
9 ILIM
Q7
CC 5
Q8
Q9
Q10
11 –VS
EXTERNAL CONNECTIONS
1 2 3 4 5 6 7 8 9 10 11 12
IN
NC NC
COM
NC
+V_S
C_C
R_G
NC _-VS
R_CL
OUT
PB51U
http://www.cirrus.com
Copyright © Cirrus Logic, Inc. 2009
(All Rights Reserved)
JUN 20091
APEX − PB51UREVE