PA61 Cirrus Logic Inc, PA61 Datasheet - Page 4

• Manufacturer Part Number: PA61
• Description: OP AMP 90V 10A TO-3-8 CE
• Manufacturer: Cirrus Logic Inc
• Series: Apex Precision Power™r

Specifications of PA61

• Amplifier Type: Power
• Number Of Circuits: 1
• Slew Rate: 2.8 V/µs
• Gain Bandwidth Product: 1MHz
• Current - Input Bias: 12nA
• Voltage - Input Offset: 2000µV
• Current - Supply: 3mA
• Current - Output / Channel: 10A
• Voltage - Supply, Single/dual (±): 20 V ~ 90 V, ±10 V ~ 45 V
• Operating Temperature: -25°C ~ 85°C
• Mounting Type: Through Hole
• Package / Case: TO-3-8
• Number Of Channels: 1
• Voltage Gain Db: 108 dB
• Common Mode Rejection Ratio (min): 74 dB
• Input Offset Voltage: 6 mV
• Maximum Operating Temperature: + 85 C
• Mounting Style: Through Hole
• Maximum Dual Supply Voltage: +/- 45 V
• Minimum Operating Temperature: - 25 C
• Lead Free Status / RoHS Status: Request inventory verification / Request inventory verification
• Output Type: -
• -3db Bandwidth: -
• Lead Free Status / Rohs Status: Details
• Other names: 598-1317

PA61 • PA61A
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)
limitations:
1. The current handling capability of the transistor geometry
2. The second breakdown effect which occurs whenever the
3. The junction temperature of the output transistors.
Op Amp. For a 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.
The following guidelines may save extensive analytical efforts.
1. Under transient conditions, capacitive and dynamic* induc-
4
Please read Application Note 1 "General Operating Consider-
The output stage of most power amplifiers has 3 distinct
The SOA curves combine the effect of all limits for this Power
and the wire bonds.
simultaneous collector current and collector-emitter voltage
exceeds specified limits.
8.0
6.0
4.0
3.0
2.0
1.5
1.0
10
.8
.6
.4
.3
.2
.1
10
SUPPLY TO OUTPUT DIFFERENTIAL VOLTAGE V
15
SAFE OPERATING AREA (SOA)
20
25
30
40
50
60 70
S
– V
O
(V)
80
90
P r o d u c t I n n o v a t i o n F r o m
* If the inductive load is driven near steady state conditions,
** Second breakdown effect imposes no limitation but thermal
2. The amplifier can handle any EMF generating or reactive
using the operating conditions for a specific application.
However, for protection against sustained, high energy flyback,
external fast-recovery diodes should be used.
45V
40V
35V
30V
25V
20V
15V
3. The output stage is protected against transient flyback.
V
tive loads up to the following maximum are safe:
allowing the output voltage to drop more than 8V below the
supply rail with I
I
should be capacitively coupled or the current limit must be
lowered to meet SOA criteria.
limitations must still be observed.
load and short circuits to the supply rail or shorts to common
if the current limits are set as follows at T
These simplified limits may be exceeded with further analysis
LIM
S
CAPACITIVE LOAD
= 5A while the amplifier is current limiting, the inductor
45V
40V
35V
30V
25V
20V
15V
±V
I
S
LIM
1600 F
5.0mF
200 F
400 F
800 F
10mF
20mF
= 5A
LIM
C, L, OR EMF LOAD
= 10A or 15V below the supply rail with
SHORT TO V
I
LIM
2.5mF
5.0mF
150 F
200 F
400 F
800 F
10mF
= 10A
0.1A
0.2A
0.3A
0.5A
2.0A
1.2A
1.5A
S
±
I
INDUCTIVE LOAD
400mH
LIM
11mH
20mH
35mH
50mH
8mH
**
= 5A
C
=85°C.
SHORT TO
COMMON
3.0A
4.0A
1.3A
1.5A
1.6A
2.0A
2.4A
I
LIM
100mH
2.8mH
4.3mH
5.0mH
6.2mH
20mH
15mH
PA61U
= 10A