CIRRUS PA16

Product Innovation
PA16,
PA16A
PA16PA16
• PA16A
• PA16A
From
Power Operational Amplifiers
FEATURES
DESCRIPTION
The PA16 and PA16A are wideband, high output current operational amplifiers designed to drive resistive,
inductive and capacitive loads. Their complementary
“collector output” stage can swing close to the supply
rails and is protected against inductive kickback. For
optimum linearity, the output stage is biased for class
A/B operation. The safe operating area (SOA) can be
observed for all operating conditions by selection of
user programmable, current limiting resistors (down to
10mA). Both amplifiers are internally compensated but
are not recommended for use as unity gain followers.
For continuous operation under load, mounting on a
heatsink of proper rating is recommended.
These hybrid integrated circuits utilize thick film (cermet) resistors, ceramic capacitors and semiconductor
chips to maximize reliability, minimize size and give
top performance. Ultrasonically bonded aluminum
wires provide reliable interconnections at all operating
temperatures. The Power SIP package is electrically
isolated.
♦ HIGH POWER BANDWIDTH — 350kHz
♦ HIGH SLEW RATE — 20V/μs
♦ FAST SETTLING TIME — 600ns
♦ LOW CROSSOVER DISTORTION — Class A/B
♦ LOW INTERNAL LOSSES — 1.2V at 2A
♦ HIGH OUTPUT CURRENT — ±5A PEAK
♦ LOW INPUT BIAS CURRENT — FET Input
♦ ISOLATED CASE — 300 VDC
APPLICATIONS
♦ MOTOR, VALVE AND ACTUATOR CONTROL
♦ MAGNETIC DEFLECTION CIRCUITS UP TO
5A
♦ POWER TRANSDUCERS UP TO 350 kHz
♦ AUDIO AMPLIFIERS UP TO 44W RMS
EQUIVALENT SCHEMATIC
4
R1
R2
R5
R3
D1
Q1
R6
Q2
R4
Q4
2
R7
10
Q3
12
R15
A1
1
Q5
R8
Q7
R9
R10
R12
R13
Q6
8
R14
Q8
D2
R11
6
PA16U
www.cirrus.com
Copyright © Cirrus Logic, Inc. 2009
(All Rights Reserved)
NOV 20091
APEX − PA16REVI
PA16 • PA16A
Product Innovation From
EXTERNAL CONNECTIONS
1
2
–IN
+IN
3
4
5
6
7
8
9
10
11
12
–R CL
+VS
OUT
–VS
12-pin SIP
PACKAGE
STYLE DP
+R CL
Formed leads available
See package style EE
1. CHARACTERISTICS AND SPECIFICATIONS
ABSOLUTE MAXIMUM RATINGS – PA16/PA16A
Parameter
Max
Units
SUPPLY VOLTAGE, +VS to -VS
38
V
OUTPUT CURRENT, within SOA
5
A
62.5
W
-30
30
V
-VS + 2
+VS - 2
V
260
°C
POWER DISSIPATION, internal
Symbol
Min
(Note 2)
INPUT VOLTAGE, differential
INPUT VOLTAGE, common mode
TEMPERATURE, pin solder, 10s max.
TEMPERATURE, junction
150
°C
TEMPERATURE RANGE, storage
−40
85
°C
OPERATING TEMPERATURE RANGE, case
−25
85
°C
CAUTION
(Note 2)
The exposed substrate contains beryllia (BeO). Do not crush, machine, or subject to temperatures
in excess of 850°C to avoid generating toxic fumes.
SPECIFICATIONS
Parameter
Test Conditions3,7
PA16
Min
PA16A
Typ
Max
±5
±10
Min
Typ
Max
Units
±10
±1
±3
mV
±50
*
±25
µV/°C
INPUT
OFFSET VOLTAGE, initial
OFFSET VOLTAGE vs. temp
Full temp range
OFFSET VOLTAGE vs. supply
±10
*
µV/V
OFFSET VOLTAGE vs. power
±6
*
µV/W
BIAS CURRENT, initial
50
BIAS CURRENT, vs. temp
0.01
OFFSET CURRENT, initial
25
OFFSET CURRENT, vs. temp
INPUT CAPACITANCE
2
25
200
BIAS CURRENT, vs. supply
INPUT IMPEDANCE, DC
200
100
pA
*
pA/°C
*
100
15
100
pA/V
50
pA
*
pA/°C
1000
*
GΩ
3
*
pF
PA16U
PA16 • PA16A
Product Innovation From
PA16
PA16A
Test Conditions3,7
Min
Typ
Min
Typ
COMMON MODE VOLTAGE
RANGE, Pos.
(Note 6)
Full temp range
+VS - 6
+VS - 3
*
*
V
COMMON MODE VOLTAGE
RANGE, Neg.
(Note 6)
Full temp range
-VS + 6
-VS + 5
*
*
V
70
100
*
*
dB
*
dB
*
dB
Parameter
COMMON MODE REJECTION, Full temp range
DC
Max
Max
Units
GAIN
OPEN LOOP GAIN @ 10Hz
1KΩ load
OPEN LOOP GAIN @ 10Hz
Full temp range,
10KΩ load
103
86
100
*
GAIN BANDWIDTH PRODUCT 10Ω load
@ 1MHz
4.5
*
MHz
POWER BANDWIDTH
10Ω load
350
*
kHz
PHASE MARGIN
Full temp range,
10Ω load
30
*
°
OUTPUT
VOLTAGE SWING
(Note 4)
IO = 5A,
RCL = 0.08Ω
±VS - 4
±VS - 3
±VS - 3
*
V
VOLTAGE SWING
(Note 4)
IO = 2A
±VS - 2
±VS - 1.2
±VS - 1.2
*
V
CURRENT, peak
SETTLING TIME to 0.1%
5
2V step
SLEW RATE
*
0.6
13
20
*
A
*
µS
*
V/µS
CAPACITIVE LOAD
Full temp range,
A V > 10
SOA
*
HARMONIC DISTORTION
PO = 5W, F =
1kHz, RL = 4Ω
0.028
*
%
SMALL SIGNAL rise/fall time
RL = 10Ω,
AV = 1
100
*
nS
SMALL SIGNAL overshoot
RL = 10Ω,
AV = 1
10
*
%
POWER SUPPLY
VOLTAGE
Full temp range
±7
CURRENT, quiescent
±15
±19
27
*
*
*
V
40
*
*
mA
THERMAL
RESISTANCE, AC,
junction to case (Note 5)
F > 60Hz
1.4
1.63
*
*
°C/W
RESISTANCE, DC,
junction to case
F < 60Hz
1.8
2.0
*
*
°C/W
RESISTANCE, DC,
junction to air
TEMPERATURE RANGE, case Meets full range
specification
PA16U
30
-25
*
+85
*
°C/W
*
°C
3
PA16 • PA16A
Product Innovation From
NOTES:
1. (All Min/Max characteristics and specifications are guaranteed over the Specified Operating Conditions. Typical performance characteristics and specifications are derived from measurements taken
at typical supply voltages and TC = 25°C).
2. Long term operation at the maximum junction temperature will result in reduced product life. Derate
power dissipation to achieve high MTTF.
* The specification of PA16A is identical to the specification for PA16 in applicable column to the left.
3. The power supply voltage for all specifications is the TYP rating unless otherwise noted as a test
condition.
4. +VS and –VS denote the positive and negative supply rail respectively. Total VS is measured from +VS
to –VS.
5. Rating applies if the output current alternates between both output transistors at a rate faster than
60Hz.
6. Exceeding CMV range can cause the output to latch.
7. Full temperature specifications are guaranteed but not 100% tested.
8. The absolute maximum negative input voltage is equal to the negative power supply voltage plus 1V
(-VS + 1V).
TYPICAL APPLICATION
Vehicular Sound System Power Stage
100K
When system voltages are low and power is at a premium, the PA16 is a natural choice. The circuit above
utilizes not only the feature of low internal loss of the
PA16, but also its very low distortion level to implement a crystal clear audio amplifier suitable even for
airborne applications. This circuit uses AC coupling
of both the input signal and the gain circuit to render
DC voltage across the speaker insignificant. The resistor and capacitor across the inputs form a stability enhancement network. The 0.27 ohm current limit
resistors provide protection in the event of an output
short circuit.
+12
.47µF 16K
.27Ω
1K
PA16
.001µF
IN
.47µF
RCL+
3.2Ω
16W
RCL–
16K
–12
.27Ω
LOW INTERNAL LOSS MAXIMIZES EFFICIENCY
50
40
30
20
10
0
0
25
50
75
100
125
CASE TEMPERATURE, TC (°C)
SMALL SIGNAL RESPONSE
2.5
TC = 25 to 85°C
2.0
1.5
±VO
1.0
.5
0
PHASE, Ф (°)
–60
N LOOP GAIN, AOL (dB)
80
20
1
2
3
4
OUTPUT CURRENT, IO (A)
2.5
RCL = 0.3Ω
2.0
1.5
RCL = 0.62Ω
1.0
.5
0
–25
5
PHASE RESPONSE
30
50
0
25
75 100 125
CASE TEMPERATURE, TC (°C)
POWER RESPONSE
| +VS | + | –VS | = 36V
–30
40
0
CURRENT LIMIT
3.0
3.0
100
60
OUTPUT VOLTAGE SWING
3.5
CURRENT LIMIT, ILIM (A)
60
120
4
POWER DERATING
–90
–120
–150
UT VOLTAGE, VO (VP-P)
70
SATURATION VOLTAGE, VS –VO (V)
INTERNAL POWER DISSIPATION, PD (W)
TYPICAL PERFORMANCE GRAPHS
23
18
13
10
| +VS | + | –VS | = 30V
PA16U
40
30
20
10
±VO
1.0
0
25
50
75
100
125
CASE TEMPERATURE, TC (°C)
SMALL SIGNAL RESPONSE
.5
0
1
2
3
4
OUTPUT CURRENT, IO (A)
1.5
RCL = 0.62Ω
1.0
PA16 • PA16A
.5
0
–25
5
PHASE RESPONSE
0
50
0
25
75 100 125
CASE TEMPERATURE, TC (°C)
POWER RESPONSE
30
40
20
–90
–120
–150
0
–180
10
100 1K 10K .1M 1M 10M
FREQUENCY, F (Hz)
BIAS CURRENT
256
64
16
4
1
.25
.06
–15
5
45
65
85
25
CASE TEMPERATURE, TC (C)
105
–210
COMMON MODE REJECTION, CMR (dB)
1
INPUT NOISE
40
120
1
10
COMMON MODE REJECTION
80
60
40
1
10
100 1K 10K .1M 1M 10M
FREQUENCY, F (Hz)
SETTLING TIME
3
35
2.5
25
2
TIME, t (µs)
30
15
AD
V
1.5
0.1
HARMONIC DISTORTION
PO = .5W
RL = 4Ω
PO = 5W
RL = 4Ω
0.01
0.001
.1K
PA16U
PO = 25W
RL = 2Ω
1.0K
10K
FREQUENCY, F (Hz)
100K
D
OA
OL
N
mV
10
1
AD
0Ω LO
10mV 1
2
5
6
1
3
4
7
8
OUTPUT CHANGE FROM ZERO, VOLTS
.1M
AV = 10
VPS = 15V
LO
0
15
OUTPUT VOLTAGE, VO (V)
1
100
1K
10K
FREQUENCY, F (Hz)
NO
1m
.5
10
10
7.8
6
.1M
140
5
0
–5
–10
0
1
2
3
4
TIME, t (µs)
POWER SUPPLY REJECTION
100
+VS
80
60
–VS
40
20
0
10
1.08
100
1K 10K .1M 1M
FREQUENCY, F(Hz)
10M
QUIESCENT CURRENT
1.06
1.04
1.02
1
.98
.96
.94
.92
–25
0
25
50
75
100 125
CASE TEMPERATURE, TC (°C)
PULSE RESPONSE
VIN = ±.2V, tr = 50ns
.2
.1
0
–.1
–.2
–.3
5
.2M
.5M .7M 1M
.3M
FREQUENCY, F (Hz)
120
.3
VIN = ±1V, tr = 100ns
LOAD = 10Ω
| +VS | + | –VS | = 30V
10
PULSE RESPONSE
10
–15
13
OUTPUT VOLTAGE, VO (V)
20
18
100 1K 10K .1M 1M 10M
FREQUENCY, F (Hz)
100
20
23
POWER SUPPLY REJECTION, PSR (dB)
60
NORMALIZED QUIESCENT CURRENT IQ (X)
–60
PHASE, Ф (°)
80
OUTPUT VOLTAGE, VO (VP-P)
| +VS | + | –VS | = 36V
–30
OPEN LOOP GAIN, AOL (dB)
NORMALIZED BIAS CURRENT, IB (X)
1.5
100
–20
INPUT NOISE VOLTAGE, eN (nV/√Hz)
2.0
CL
2.0
Product Innovation From
120
DISTORTION, THD (%)
TC = 25 to 85°C
AD, ∆A (dB)
0
2.5
CURRENT LIMIT, ILI
SATURATION VOLTAGE,
INTERNAL POWER DISSIPA
50
0
0
.5
1.0
TIME, t (µs)
1.5
LOADING EFFECTS
5
–.3
I = 150mA
OUTPUT VOLTAGE,
.1
0
–.1
–.2
PA16 • PA16A
–.3
DELTA GAIN WITH LOAD, ∆A (dB)
5
0
0
Product Innovation From
.5
1.0
TIME, t (µs)
1.5
LOADING EFFECTS
–.3
IO = 150mA
–.6
GENERAL
–.9
IO = 400mA
–1.2
–1.5
100
10K
1K
FREQUENCY, F (Hz)
.1M
Please read Application Note 1 "General Operating Considerations" 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; heat sink selection; Apex Precision Power’s complete
Application Notes library; Technical Seminar Workbook; and Evaluation Kits.
±VS
SHORT TO ±VS
C, L OR EMF LOAD
SHORT TO
COMMON
18V
15V
10V
.9A
1.0A
1.6A
1.8A
2.1A
3.2A
SOA
5.0
T
4.0
3.0
2.0
1.5
1.0
=6
C
T
C
0°
=8
5°
C
C
wn
do
s
ak
re
5m
db
t=
on
ec
es
tat
ys
ad
ste
The SOA curves combine the effect of all limits for this Power 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:
The amplifier can handle any EMF generating or reactive
load and short circuits to the supply rails or shorts to common if the current limits are set as follows at TC = 85°C.
OUTPUT CURRENT FROM +VS OR –VS (A)
SAFE OPERATING AREA (SOA)
0.8
0.6
0.5
6 7 8 9 10
15
20 25 30
38
SUPPLY TO OUTPUT DIFFERENTIAL VOLTAGE VS –VO (V)
These simplified limits may be exceeded with further analysis using the operating conditions for a specific application.
CURRENT LIMIT
Proper operation requires the use of two current limit resistors, connected as shown in the external connection diagram. The minimum value for RCL is 0.12 ohm, however for optimum reliability it should be set as high as possible.
Refer to the “General Operating Considerations” section of the handbook for current limit adjust details.
RCL = 0.65 - 0.01
ILIM (A)
DEVICE MOUNTING
The case (mounting flange) is electrically isolated and should be mounted directly to a heatsink with thermal compound. Screws with Belville spring washers are recommended to maintain positive clamping pressure on heatsink
mounting surfaces. Long periods of thermal cycling can loosen mounting screws and increase thermal resistance.
Since the case is electrically isolated (floating) with respect to the internal circuits it is recommended to connect it
to common or other convenient AC ground potential.
6
PA16U
Product Innovation From
PA16 • PA16A
CONTACTING CIRRUS LOGIC SUPPORT
For all Apex Precision Power product questions and inquiries, call toll free 800-546-2739 in North America.
For inquiries via email, please contact [email protected]
International customers can also request support by contacting their local Cirrus Logic Sales Representative.
To find the one nearest to you, go to www.cirrus.com
IMPORTANT NOTICE
Cirrus Logic, Inc. and its subsidiaries ("Cirrus") believe that the information contained in this document is accurate and reliable. However, the information is subject
to change without notice and is provided "AS IS" without warranty of any kind (express or implied). Customers are advised to obtain the latest version of relevant
information to verify, before placing orders, that information being relied on is current and complete. All products are sold subject to the terms and conditions of sale
supplied at the time of order acknowledgment, including those pertaining to warranty, indemnification, and limitation of liability. No responsibility is assumed by Cirrus
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does not extend to other copying such as copying for general distribution, advertising or promotional purposes, or for creating any work for resale.
CERTAIN APPLICATIONS USING SEMICONDUCTOR PRODUCTS MAY INVOLVE POTENTIAL RISKS OF DEATH, PERSONAL INJURY, OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE (“CRITICAL APPLICATIONS”). CIRRUS PRODUCTS ARE NOT DESIGNED, AUTHORIZED OR WARRANTED TO BE
SUITABLE FOR USE IN PRODUCTS SURGICALLY IMPLANTED INTO THE BODY, AUTOMOTIVE SAFETY OR SECURITY DEVICES, LIFE SUPPORT PRODUCTS OR OTHER CRITICAL APPLICATIONS. INCLUSION OF CIRRUS PRODUCTS IN SUCH APPLICATIONS IS UNDERSTOOD TO BE FULLY AT THE CUSTOMER’S RISK AND CIRRUS DISCLAIMS AND MAKES NO WARRANTY, EXPRESS, STATUTORY OR IMPLIED, INCLUDING THE IMPLIED WARRANTIES OF
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BY SUCH USE, TO FULLY INDEMNIFY CIRRUS, ITS OFFICERS, DIRECTORS, EMPLOYEES, DISTRIBUTORS AND OTHER AGENTS FROM ANY AND ALL
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Cirrus Logic, Cirrus, and the Cirrus Logic logo designs, Apex Precision Power, Apex and the Apex Precision Power logo designs are trademarks of Cirrus Logic, Inc.
All other brand and product names in this document may be trademarks or service marks of their respective owners.
PA16U
7