Burr Brown OPA549T Datasheet

®

For most current data sheet and other product

information, visit www.burr-brown.com

High-Voltage, High-Current
OPERATIONAL AMPLIFIER

OPA549

OPA549

FEATURES

● HIGH OUTPUT CURRENT:

8A Continuous
10A Peak

● WIDE POWER SUPPLY RANGE:

Single Supply: +8V to +60V
Dual Supply: ±4V to ±30V

● WIDE OUTPUT VOLTAGE SWING

● FULLY PROTECTED:

Thermal Shutdown
Adjustable Current Limit

● OUTPUT DISABLE CONTROL

● THERMAL SHUTDOWN INDICATOR

● HIGH SLEW RATE: 9V/µs

● CONTROL REFERENCE PIN

● 11-LEAD POWER ZIP PACKAGE

APPLICATIONS

● VALVE, ACTUATOR DRIVER

● SYNCHRO, SERVO DRIVER

● POWER SUPPLIES

● TEST EQUIPMENT

● TRANSDUCER EXCITATION

● AUDIO POWER AMPLIFIER

DESCRIPTION

The OPA549 is a low-cost, high-voltage/high-current
operational amplifier ideal for driving a wide variety
of loads. This laser-trimmed monolithic integrated
circuit provides excellent low-level signal accuracy,
and high output voltage and current.

The OPA549 operates from either single or dual sup­plies for design flexibility. The input common-mode
range extends below the negative supply.

The OPA549 is internally protected against over­temperature conditions and current overloads. In addi­tion, the OPA549 provides an accurate, user-selected
current limit. Unlike other designs which use a “power”
resistor in series with the output current path, the
OPA549 senses the load indirectly. This allows the
current limit to be adjusted from 0A to 10A with a
resistor/potentiometer, or controlled digitally with a
voltage-out or current-out DAC.

The Enable/Status (E/S) pin provides two functions. It
can be monitored to determine if the device is in
thermal shutdown, and it can be forced low to disable
the output stage and effectively disconnect the load.

The OPA549 is available in an 11-lead power ZIP
package. Its copper tab allows easy mounting to a heat
sink for excellent thermal performance. Operation is
specified over the extended industrial temperature
range, –40°C to +85°C.

V+

OPA549

ES Pin
Forced Low: Output disabled
Indicates Low: Thermal shutdown

International Airport Industrial Park • Mailing Address: PO Box 11400, Tucson, AZ 85734 • Street Address: 6730 S. Tucson Blvd., Tucson, AZ 85706 • Tel: [phone]

Twx: 910-952-1111 • Internet: http://www.burr-brown.com/ • Cable: BBRCORP • Telex: 066-6491 • FAX: [phone] • Immediate Product Info: [phone]

©

1999 Burr-Brown Corporation PDS-1450A Printed in U.S.A. November, 1999

E/S

V–

I

Ref

1 OPA549

V

LIM

R

O

R

sets the current limit

CL

value from 0A to 10A.
(Very Low Power Dissipation)

CL

®

SPECIFICATIONS: VS = ±2.25V to ±18V

Boldface limits apply over the specified temperature range, TA = –40°C to +85°C

At T

= +25°C, VS = ±30V, Ref = 0V, and E/S pin open, unless otherwise noted.

CASE

OPA549T

PARAMETER CONDITION MIN TYP MAX UNITS
OFFSET VOLTAGE V

Input Offset Voltage VCM = 0V, IO = 0 ±1 ±5mV

vs Temperature dV
vs Power Supply PSRR VS = ±4V to ±30V, Ref = V – 25 100 µV/V

INPUT BIAS CURRENT

Input Bias Current

(1)

(2)

vs Temperature T

Input Offset Current I

NOISE

Input Voltage Noise Density e
Current Noise Density i

INPUT VOLTAGE RANGE

Common-Mode Voltage Range: Positive V

Negative V

Common-Mode Rejection Ratio CMRR V

INPUT IMPEDANCE

Differential 10
Common-Mode 109 || 4 Ω || pF

OPEN-LOOP GAIN

Open-Loop Voltage Gain A

FREQUENCY RESPONSE

Gain Bandwidth Product GBW 0.9 MHz
Slew Rate SR G = 1, 50Vp-p Step, R
Full Power Bandwidth See Typical Curve
Settling Time: ±0.1% G = –10, 50V Step 20 µs
Total Harmonic Distortion + Noise

(3)

OUTPUT

Voltage Output, Positive I

Negative IO = –2A (V–) + 1.7 (V–) + 1.4 V
Positive I
Negative IO = –8A (V–) + 4.6 (V–) + 3.9 V
Negative R

Maximum Continuous Current Output: dc
Output Current Limit

Current Limit Range 0 to ±10 A
Current Limit Equation I
Current Limit Tolerance

(1)

Capacitive Load Drive (Stable Operation) C
Output Disabled

Leakage Current Output Disabled See Typical Curve
Output Capacitance Output Disabled 750 pF

OUTPUT ENABLE /STATUS (E/S) PIN

Shutdown Input Mode

High (output enabled) E/S Pin Open or Forced High (Ref) + 2.4 V

V

E/S

Low (output disabled) E/S Pin Forced Low (Ref) + 0.8 V

V

E/S

I

High (output enabled) E/S Pin Indicates High –50 µA

E/S

Low (output disabled) E/S Pin Indicates Low –55 µA

I

E/S

Output Disable Time 1 µs
Output Enable Time 3 µs
Thermal Shutdown Status Output

Normal Operation Sourcing 20µA (Ref) + 2.4 (Ref) + 3.5 V
Thermally Shutdown Sinking 5µA, T

Junction Temperature, Shutdown +160 °C

Reset from Shutdown +140 °C

Ref (Reference Pin for Control Signals)

Voltage Range V– (V+) – 8 V

(2)

Current

POWER SUPPLY

Specified Voltage V
Operating Voltage Range, (V+) – (V–) 8 60 V
Quiescent Current I
Quiescent Current in Shutdown Mode I

TEMPERATURE RANGE

Specified Range –40 +85 °C
Operating Range –40 +125 °C
Storage Range –55 +125 °C
Thermal Resistance,
Thermal Resistance,

NOTES: (1) High-speed test at T
Frequency” in the Typical Performance Curves section for additional power levels. (4) See “Safe Operating Area” (SOA) in the Typical Performance Curves section.

θ

JC

θ

JA

= +25°C. (2) Positive conventional current is defined as flowing into the terminal. (3) See “Total Harmonic Distortion + Noise vs

J

®

THD+N

(4)
(4)

ac

OS

OS

/dT T

I

B

OS

n
n

CM
CM

OL

= –40°C to +85°C ±20 µV/°C

CASE

V

= 0V –100 –500 nA

CM

= –40°C to +85°C ±0.5 nA/°C

CASE

V

= 0V ±5 ±50 nA

CM

f = 1kHz 70 nV/√Hz
f = 1kHz 1 pA/√Hz

Linear Operation (V+) – 3 (V+) – 2.3 V
Linear Operation (V–) – 0.1 (V–) – 0.2 V

= (V–) – 0.1V to (V+) – 3V 80 95 dB

CM

VO = ±25V, RL = 1kΩ 100 110 dB

VO = ±25V, RL = 4Ω 100 dB

f = 1kHz,RL = 4Ω,G = +3, Power = 25W

= 2A (V+) – 3.2 (V+) – 2.7 V

O

= 8A (V+) – 4.8 (V+) – 4.3 V

O

= 8Ω to V– (V–) + 0.3 (V–) + 0.1 V

L

Waveform Cannot Exceed 10A peak

R

LOAD

= 7.5kΩ (I

CL

S

I

Q

Connected to Ref IO = 0 ±26 ±35 mA

LIM

LIM

= ±5A), RL = 4Ω±200 ±500 mA

LIM

Connected to Ref ±6mA

No Heat Sink 30 °C/W

7

|| 6 Ω || pF

= 4Ω 9V/µs

L

0.015 %

±8A

8 Arms

= 15800 • 4.75V/(7500Ω + RCL)A

LIM

See Typical Curve

> 160°C (Ref) + 0.2 (Ref) + 0.8 V

J

–3.5 mA

±30 V

1.4 °C/W

2OPA549

ABSOLUTE MAXIMUM RATINGS

(1)

PACKAGE/ ORDERING INFORMATION

Output Current ................................................ See SOA Curve (Figure 6)

Supply Voltage, V+ to V– ................................................................... 60V

Input Voltage Range ....................................... (V–) – 0.5V to (V+) + 0.5V

Input Shutdown Voltage ................................................... Ref – 0.5 to V+

Operating Temperature ..................................................–40 °C to +125°C

Storage Temperature ..................................................... –55°C to +125°C

Junction Temperature ...................................................................... 150°C

Lead Temperature (soldering, 10s) ................................................. 300°C

ESD Capability (Human Body Model) ............................................. 2000V

NOTE: (1) Stresses above these ratings may cause permanent damage.
Exposure to absolute maximum conditions for extended periods may de­grade device reliability.

CONNECTION DIAGRAM

Tab connected to V–. Do not use to conduct current.

246810

1357911

+In

–In

Ref I

LIM

E/S

PACKAGE
DRAWING TEMPERATURE

PRODUCT PACKAGE NUMBER RANGE

OPA549T 11-Lead Power ZIP 242 –40°C to +85°C

ELECTROSTATIC
DISCHARGE SENSITIVITY

This integrated circuit can be damaged by ESD. Burr-Brown
recommends that all integrated circuits be handled with
appropriate precautions. Failure to observe proper handling
and installation procedures can cause damage.

ESD damage can range from subtle performance degrada­tion to complete device failure. Precision integrated circuits
may be more susceptible to damage because very small
parametric changes could cause the device not to meet its
published specifications.

O

Connect both pins 1 and 2 to output.
Connect both pins 5 and 7 to V–.
Connect both pins 10 and 11 to V+.

V–

V+V

The information provided herein is believed to be reliable; however, BURR-BROWN assumes no responsibility for inaccuracies or omissions. BURR-BROWN assumes
no responsibility for the use of this information, and all use of such information shall be entirely at the user’s own risk. Prices and specifications are subject to change
without notice. No patent rights or licenses to any of the circuits described herein are implied or granted to any third party. BURR-BROWN does not authorize or warrant
any BURR-BROWN product for use in life support devices and/or systems.

3 OPA549

®

TYPICAL PERFORMANCE CURVES

At T

= +25°C, VS = ±30V and E/S pin open, unless otherwise noted.

CASE

OPEN-LOOP GAIN AND PHASE

vs FREQUENCY

120
100

80
60
40

Gain (dB)

20

0
–20
–40

1 10 100 1k 10k 100k 1M 10M

Frequency (Hz)

CURRENT LIMIT vs TEMPERATURE

9

8

7

6

8A

5A

5

4

3

Current Limit (A)

2A

2

1

0

–75 –50 –25 0 25 50 75 100 125

Temperature (°C)

0
–20
–40
–60
–80
–100
–120
–140
–160

–130
–120
–110
–100

–90
–80

Phase (°)

–70

Input Bias Current (nA)

–60
–50
–40

–60 –40 –20 0 20 40 60 80 140120100

9
8
7
6
5
4
3

Current Limit (A)

2
1
0

0 5 10 15 20 25 30

INPUT BIAS CURRENT vs TEMPERATURE

–I

B

+I

B

Temperature (°C)

CURRENT LIMIT vs SUPPLY VOLTAGE

+I

, 8A

LIM

–I

, 8A

LIM

+I

, 5A

LIM

–I

, 5A

LIM

+I

, 2A

LIM

–I

, 2A

LIM

Supply Voltage (V)

INPUT BIAS CURRENT

vs COMMON-MODE VOLTAGE

–200
–180
–160
–140
–120
–100

–80
–60

Input Bias Current (nA)

–40
–20

–0

–30 –20 –10 0 10 20 30

Common-Mode Voltage (V)

®

30

QUIESCENT CURRENT vs TEMPERATURE

VS = ±30V

25

20

VS = ±5V

15

10

Quiescent Current (mA)

5

IQ Shutdown (output disabled)

0

–75 –50 –25 0 25 50 75 100 125

Temperature (°C)

4OPA549

TYPICAL PERFORMANCE CURVES (Cont.)

10 100 1k 10k 100k 1M

120

100

80

60

40

20

0

Power Supply Rejection Ratio (dB)

Frequency (Hz)

POWER SUPPLY REJECTION RATIO

vs FREQUENCY

–PSRR

+PSRR

At T

= +25°C, VS = ±30V and E/S pin open, unless otherwise noted.

CASE

COMMON-MODE REJECTION RATIO vs FREQUENCY

100

90

80

70

60

50

Common-Mode Rejection (dB)

40

10 100 1k 10k 100k

Frequency (Hz)

OPEN-LOOP GAIN, COMMON-MODE REJECTION RATIO

300

VOLTAGE NOISE DENSITY vs FREQUENCY

120

AND POWER SUPPLY REJECTION RATIO

vs TEMPERATURE

250

200

150

100

Voltage Noise (nV/√Hz)

50

0

1 10 100 1k 10k 100k

Frequency (Hz)

GAIN-BANDWIDTH PRODUCT AND

1

0.9

0.8

0.7

0.6

0.5

0.4

0.3

0.2

Gain-Bandwidth Product (MHz)

0.1
0

–75 –50 –25 0 25 50 75 100 125

SLEW RATE vs TEMPERATURE

GBW

SR+

Temperature (°C)

SR–

16
15
14
13
12
11
10

Slew Rate (V/µs)

9
8
7
6

110

100

, CMRR, PSRR (dB)

OL

90

A

80

–75 –50 0 50 100

TOTAL HARMONIC DISTORTION + NOISE

1

G = +3

R

= 4Ω

L

0.1

0.1W

THD+N (%)

0.01

0.001
20 100 1k 10k 20k

A

OL

PSRR

CMRR

Temperature (°C)

vs FREQUENCY

1W

Frequency (Hz)

75W

10W

125

®

5 OPA549