PA83A Cirrus Logic Inc, PA83A Datasheet - Page 4

• Manufacturer Part Number: PA83A
• Description: OP AMP HV 300V .075A TO-3-8 SG
• Manufacturer: Cirrus Logic Inc
• Series: Apex Precision Power™r

Specifications of PA83A

• Amplifier Type: Power
• Number Of Circuits: 1
• Slew Rate: 30 V/µs
• Gain Bandwidth Product: 3MHz
• Current - Input Bias: 3pA
• Voltage - Input Offset: 500µV
• Current - Supply: 6mA
• Current - Output / Channel: 75mA
• Voltage - Supply, Single/dual (±): 30 V ~ 300 V, ±15 V ~ 150 V
• Operating Temperature: -25°C ~ 85°C
• Mounting Type: Through Hole
• Package / Case: TO-3-8
• Number Of Channels: 1
• Voltage Gain Db: 116 dB
• Common Mode Rejection Ratio (min): 130 dB
• Input Offset Voltage: 1 mV
• Maximum Operating Temperature: + 85 C
• Mounting Style: Through Hole
• Maximum Dual Supply Voltage: +/- 150 V
• Minimum Operating Temperature: - 25 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Output Type: -
• -3db Bandwidth: -
• Lead Free Status / Rohs Status: Details
• Other names: 598-1323

PA83 • PA83A
GENERAL
ations" which covers stability, supplies, heat sinking, mounting,
current limit, SOA interpretation, and specification interpretation.
Visit www.Cirrus.com for design tools that help automate tasks
such as calculations for stability, internal power dissipation,
current limit and heat sink selection. The "Application Notes"
and "Technical Seminar" sections contain a wealth of informa-
tion on specific types of applications. Package outlines, heat
sinks, mounting hardware and other accessories are located
in the "Packages and Accessories" section. Evaluation Kits
are available for most Apex Precision Power product models,
consult the "Evaluation Kit" section for details. For the most
current version of all Apex Precision Power product data sheets,
visit www.Cirrus.com.
SAFE OPERATING AREA (SOA)
two distinct limitations.
1. The internal current limit, which limits maximum available
2. The second breakdown effect, which occurs whenever the
given application, the direction and magnitude of the output
current should be calculated or measured and checked against
the SOA curves. This is simple for resistive loads but more
complex for reactive and EMF generating loads. However,
the following guidelines may save extensive analytical efforts:
4
Please read Application Note 1 "General Operating Consider-
The bipolar output stage of this high voltage amplifier has
The SOA curves combine the effect of these limits. For a
output current.
simultaneous collector current and collector-emitter voltage
exceed specified limits.
150
100
200
70
50
40
30
20
80
INTERNAL CURRENT LIMIT
INTERNAL VOLTAGE DROP, SUPPLY TO OUTPUT (V)
100
120
SOA
150
200
250
300
P r o d u c t I n n o v a t i o n F r o m
1. The following capacitive and inductive loads are safe:
2. Short circuits to ground are safe with dual supplies up to
3. Short circuits to the supply rails are safe with total supply
4. The output stage is protected against transient flyback.
INDUCTIVE LOADS
to protect these amplifiers against flyback (kickback) pulses
exceeding the supply voltages of the amplifier when driving
inductive loads. For component selection, these external diodes
must be very quick, such as ultra fast recovery diodes with
no more than 200 nanoseconds of reverse recovery time. Be
sure the diode voltage rating is greater than the total of both
supplies. The diode will turn on to divert the flyback energy
into the supply rails thus protecting the output transistors from
destruction due to reverse bias.
pulse must be absorbed by the power supply. As a result, a tran-
sient will be superimposed on the supply voltage, the magnitude
of the transient being a function of its transient impedance and
current sinking capability. If the supply voltage plus transient
exceeds the maximum supply rating or if the AC impedance
of the supply is unknown, it is best to clamp the output and the
supply with a zener diode to absorb the transient.
FIGURE 1. PROTECTION, INDUCTIVE LOAD
Two external diodes as shown in Figure 1, are required
A note of caution about the supply. The energy of the flyback
120V or single supplies up to 120V.
voltages up to 120V, e.g. ±60V.
However, for protection against sustained, high energy
flyback, external fast-recovery diodes should be used.
150V
125V
100V
75V
50V
±V
S
–V
+V
S
S
C(MAX)
2.0µF
60µF
5.µF
ALL
.7 F
L(MAX)
6.0H
1.5H
2.5H
30H
ALL
PA83U