Analog Devices OP179GRT, OP179GS, OP179GRU Datasheet

PIN CONFIGURATIONS

a

Rail-to-Rail High Output

Current Operational Amplifiers

OP179/OP279

GENERAL DESCRIPTION

The OP179 and OP279 are rail-to-rail, high output current,
single-supply amplifiers. They are designed for low voltage
applications that require either current or capacitive load drive
capability. The OP179/OP279 can sink and source currents of
±60 mA (typical) and are stable with capacitive loads to 10 nF.

Applications that benefit from the high output current of the
OP179/OP279 include driving headphones, displays, transform­ers and power transistors. The powerful output is combined with a
unique input stage that maintains very low distortion with wide
common-mode range, even in single supply designs.

The OP179/OP279 can be used as a buffer to provide much
greater drive capability than can usually be provided by CMOS
outputs. CMOS ASICs and DAC often have outputs that can
swing to both the positive supply and ground, but cannot drive
more than a few milliamps.

Bandwidth is typically 5 MHz and the slew rate is 3 V/µs, making
these amplifiers well suited for single supply applications that
require audio bandwidths when used in high gain configurations.
Operation is guaranteed from voltages as low as 4.5 V, up to 12 V.

Very good audio performance can be attained when using the
OP179/OP279 in 5 volt systems. THD is below 0.01% with a
600 Ω load, and noise is a respectable 21 nV/√Hz. Supply current
is less than 3.5 mA per amplifier.

The single OP179 is available in the 5-lead SOT-23-5 package.
It is specified over the industrial (–40°C to +85°C) tempera­ture range.

The OP279 is available in 8-lead TSSOP and SO-8 surface
mount packages. They are specified over the industrial (–40°C
to +85°C) temperature range.

8-Lead SOIC and TSSOP

SO-8 (S) and RU-8

1

2

3

4

8

7

6

5

OP279

ⴚIN A

Vⴚ

+IN A

OUT B

ⴚIN B

V+

+IN B

OUT A

FEATURES
Rail-to-Rail Inputs and Outputs
High Output Current: ⴞ60 mA
Single Supply: 5 V to 12 V
Wide Bandwidth: 5 MHz
High Slew Rate: 3 V/␮s
Low Distortion: 0.01%
Unity-Gain Stable
No Phase Reversal
Short-Circuit Protected
Drives Capacitive Loads: 10 nF

APPLICATIONS
Multimedia
Telecom
DAA Transformer Driver
LCD Driver
Low Voltage Servo Control
Modems
FET Drivers

5-Lead SOT-23-5

(RT-5)

1

2

3

5

4

ⴚIN A

+IN A

V–

OUT A

OP179

V+

8-Lead SOIC

(S Suffix)

1

2

3

4

8

7

6

5

OP179

ⴚIN A

Vⴚ

+IN A

V+

OUT A

NC

NC

NC

NC = NO CONNECT

REV. G

Information furnished by Analog Devices is believed to be accurate and
reliable. However, no responsibility is assumed by Analog Devices for its
use, nor for any infringements of patents or other rights of third parties that
may result from its use. No license is granted by implication or otherwise
under any patent or patent rights of Analog Devices.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: [phone] www.analog.com
Fax: [phone] © Analog Devices, Inc., 2002

ELECTRICAL SPECIFICATIONS

(@ VS = 5.0 V, VCM = 2.5 V, –40ⴗC ≤ TA ≤ +85ⴗC unless otherwise noted.)

Parameter Symbol Conditions Min Typ Max Unit

INPUT CHARACTERISTICS

Offset Voltage

OP179 V

OS

V

OUT

= 2.5 V ±5mV

OP279 V

OS

V

OUT

= 2.5 V ±4mV

Input Bias Current I

B

V

OUT

= 2.5 V, TA = 25°C ±300 nA

V

OUT

= 2.5 V ±700 nA

Input Offset Current I

OS

V

OUT

= 2.5 V, TA = 25°C ±50 nA

V

OUT

= 2.5 V ±100 nA

Input Voltage Range V

CM

05V

Common-Mode Rejection Ratio CMRR V

CM

= 0 V to 5 V 56 66 dB

Large Signal Voltage Gain A

VO

RL = 1 kΩ, 0.3 V ≤ V

OUT

≤ 4.7 V 20 V/mV

Offset Voltage Drift ∆VOS/∆T4µV/°C

OUTPUT CHARACTERISTICS

Output Voltage High V

OH

IL = 10 mA Source +4.8 V

Output Voltage Low V

OL

IL = 10 mA Sink, TA = 25°C75mV
I

L

= 10 mA Sink 100 mV

Short-Circuit Limit I

SC

TA = 25°C ±40 mA

Output Impedance Z

OUT

f = 1 MHz, AV = 1 22 Ω

POWER SUPPLY

Power Supply Rejection Ratio PSRR V

S

= 4.5 V to 12 V 70 88 dB

Supply Current/Amplifier I

SY

V

OUT

= 2.5 V 3.5 mA

Supply Voltage Range V

S

+4.5 +12 V

DYNAMIC PERFORMANCE

Slew Rate SR R

L

= 1 kΩ, 1 nF 3 V/µs

Gain Bandwidth Product GBP 5 MHz
Phase Margin φm 60 Degrees
Capacitive Load Drive No Oscillation 10 nF

AUDIO PERFORMANCE

Total Harmonic Distortion THD 0.01 %
Voltage Noise Density e

n

f = 1 kHz 22 nV/√Hz

ELECTRICAL SPECIFICATIONS

(@ VS = ⴞ5.0 V, –40ⴗC ≤ TA ≤ +85ⴗC unless otherwise noted.)

Parameter Symbol Conditions Min Typ Max Unit

INPUT CHARACTERISTICS

Offset Voltage

OP179 V

OS

V

OUT

= 0 ±5mV

OP279 V

OS

V

OUT

= 0 ±4mV

Input Bias Current I

B

TA = 25°C ±300 nA

±700 nA

Input Offset Current I

OS

TA = 25°C ±50 nA

±100 nA

Input Voltage Range V

CM

–5 +5 V

Common-Mode Rejection Ratio CMRR V

CM

= –5 V to +5 V 56 66 dB

Large Signal Voltage Gain A

VO

RL = 1 kΩ, –4.7 V ≤ V

OUT

≤ 4.7 V 20 V/mV

Offset Voltage Drift ∆VOS/∆T3µV/°C

OUTPUT CHARACTERISTICS

Output Voltage High V

OH

IL = 10 mA Source +4.8 V

Output Voltage Low V

OL

IL = 10 mA Sink –4.85 V

Short Circuit Limit I

SC

TA = 25°C ±50 mA

Open-Loop Output Impedance Z

OUT

f = 1 MHz, AV = +1 22 Ω

POWER SUPPLY

Supply Current/Amplifier I

SY

VS = ±6 V, V

OUT

= 0 V 3.75 mA

DYNAMIC PERFORMANCE

Slew Rate SR R

L

= 1 kΩ, 1 nF 3 V/µs

Full-Power Bandwidth BW

p

1% Distortion kHz

Gain Bandwidth Product GBP 5 MHz
Phase Margin φm 69 Degrees

NOISE PERFORMANCE

Voltage Noise e

n

p-p 0.1 Hz to 10 Hz 2 µV p-p

Voltage Noise Density e

n

f = 1 kHz 22 nV/√Hz

Current Noise Density i

n

1

pA/√Hz

Specifications subject to change without notice.

OP179/OP279–SPECIFICATIONS

–2–

REV. G

OP179/OP279

–3–

REV. G

ABSOLUTE MAXIMUM RATINGS

Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 V

Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 V

Differential Input Voltage

1

. . . . . . . . . . . . . . . . . . . . . . . . .±1 V

Output Short-Circuit Duration to GND . . . . . . . . . . Indefinite

Storage Temperature Range

S, RT, RU Package . . . . . . . . . . . . . . . . . . –65°C to +150°C

Operating Temperature Range

OP179G/OP279G . . . . . . . . . . . . . . . . . . . . –40°C to +85°C

Junction Temperature Range

S, RT, RU Package . . . . . . . . . . . . . . . . . . . –65°C to +150°C

Lead Temperature Range (Soldering, 60 sec) . . . . . . . . 300°C

CAUTION

ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily
accumulate on the human body and test equipment and can discharge without detection.
Although the OP179/OP279 features proprietary ESD protection circuitry, permanent damage
may occur on devices subjected to high energy electrostatic discharges. Therefore, proper ESD
precautions are recommended to avoid performance degradation or loss of functionality.

ORDERING GUIDE

Package Temperature Range Package Description Package Option Brand Code

OP179GRT –40°C to +85°C 5-Lead SOT-23 RT-5 A2G
OP279GS –40°C to +85°C 8-Lead SOIC SO-8
OP279GRU –40°C to +85°C 8-Lead TSSOP RU-8

WARNING!

ESD SENSITIVE DEVICE

Package Types ␪

JA

2

␪

JC

Unit

5-Lead SOT-23 (RT) 256 81 °C/W
8-Lead SOIC (S) 158 43 °C/W
8-Lead TSSOP (RU) 240 43 °C/W

NOTES

1

The inputs are clamped with back-to-back diodes. If the differential input voltage

exceeds 1 volt, the input current should be limited to 5 mA.

2

θJA is specified for the worst-case conditions, i.e., θJA is specified for device soldered

in circuit board for SOIC packages.

OP179/OP279

–4–

REV. G

160

0

2.5

40

20

–2.5

80

60

100

120

140

1.50.5–0.5–1.5

INPUT OFFSET – mV

UNITS

VS ⴝ 5V
T

A

ⴝ 25ⴗC

620 ⴛ OP AMPS

TPC 1. Input Offset Distribution

COMMON-MODE VOLTAGE – Volts

OFFSET VOLTAGE – mV

3.0

0

5

1.5

0.5

1

1.0

0

2.5

2.0

432

VS ⴝ 5V
T

A

ⴝ 25ⴗC

TPC 4. Offset Voltage vs.
Common-Mode Voltage

1000

0

100

600

200

–25

400

–50

800

7550250

TEMPERATURE – ⴗC

RL ⴝ 2k⍀

RL ⴝ 1k⍀

OPEN-LOOP GAIN – V/mV

VS ⴝ 15V

0.3

V

OUT

4.7V

TPC 7. Open-Loop Gain vs.
Temperature

VS ⴝ 5V
V

CM

ⴝ 2.5V

90

40

100

70

50

–25

60

–50

80

7550250

TEMPERATURE – ⴗC

–I

SC

SHORT-CIRCUIT CURRENT – mA

+I

SC

TPC 2. Short-Circuit Current vs.
Temperature

VS ⴝ ⴞ5V

100

50

100

80

60

–25

70

–50

90

7550250

TEMPERATURE – ⴗC

SHORT-CIRCUIT CURRENT – mA

–I

SC

+I

SC

TPC 5. Short-Circuit Current vs.
Temperature

5

0

100

3

1

–25

2

–50

4

7550250

TEMPERATURE – ⴗC

SLEW RATE – VⲐ␮s

VS ⴝ 5V
R

L

ⴝ 1k⍀

C

L

ⴝ +1nF

+EDGE

–EDGE

TPC 8. Slew Rate vs.
Temperature

400

–400

5

–200

–300

10

0

–100

100

200

300

432

+85ⴗC

+25ⴗC

COMMON-MODE VOLTAGE – Volts

INPUT BIAS CURRENT – nA

VS ⴝ 5V

–40ⴗC

TPC 3. Input Bias Current
vs. Common-Mode Voltage

COMMON-MODE VOLTAGE – Volts

7

0

5

3

1

1

2

0

6

4

5

432

BANDWIDTH – MHz

VS ⴝ 5V
TA ⴝ 25ⴗC

TPC 6. Bandwidth vs.
Common-Mode Voltage

PHASE

GAIN

40

–40

100 1k 10M1M100k10k

60

80

100

–20

0

20

90

–90

135

180

225

–45

0

45

FREQUENCY – Hz

OPEN-LOOP GAIN – dB

PHASE – Degrees

120 270

VS ⴞ2.5V
T

A

–40ⴗC

R

L

ⴝ 2k⍀

TPC 9. Open-Loop Gain and
Phase vs. Frequency

–

Typical Performance Characteristics

OP179/OP279

–5–

REV. G

VS ⴝ 5V
V

CM

ⴝ 2.5V

6.5

4.0
100

5.5

4.5

–25

5.0

–50

6.0

7550250

TEMPERATURE – ⴗC

SUPPLY CURRENT – mA

VS ⴝ ⴞ6V

VS ⴝ ⴞ5V

TPC 10. Supply Current vs.
Temperature

FREQUENCY – Hz

POWER SUPPLY REJECTION – dB

120

60

0

10 100 10M1M100k10k1k

80

100

20

40

VS ⴞ2.5V
T

A

ⴝ 25ⴗC

–PSRR

+PSRR

TPC 13. Power Supply Rejection vs.
Frequency

12

6

0

10k 10M1M100k1k

4

2

8

10

FREQUENCY – Hz

MAXIMUM OUTPUT SWING – Volts

TA ⴝ 25ⴗC
V

S

ⴝ ⴞ5V

A

VCL

ⴝ +1

R

L

1k⍀

TPC 16. Maximum Output Swing vs.
Frequency

5

0

100

3

1

–25

2

–50

4

7550250

TEMPERATURE – ⴗC

SLEW RATE – V/␮s

VS ⴝ ⴞ5V
R

L

ⴝ 1k⍀

C

L

ⴝ +1nF

+EDGE

–EDGE

TPC 11. Slew Rate vs. Temperature

6

3

0

10k

10M

1M100k1k

2

1

4

5

FREQUENCY – Hz

MAXIMUM OUTPUT SWING – Volts

TA ⴝ 25ⴗC
V

S

ⴝ ⴞ2.5V

A

VCL

ⴝ +1

R

L

1k⍀

TPC 14. Maximum Output
Swing vs. Frequency

50

10

–30

1k 10k 100M10M1M100k

20

30

40

–20

–10

0

FREQUENCY – Hz

CLOSED-LOOP GAIN – dB

A

VCL

ⴝ +100

A

VCL

ⴝ +10

A

VCL

ⴝ +1

VS ⴞ2.5V
T

A

ⴝ 25ⴗC

R

L

1k

⍀

TPC 17. Closed-Loop Gain vs.
Frequency

PHASE

GAIN

120

40

–40

100 1k 10M1M100k10k

60

80

100

–20

0

20

270

90

–90

135

180

225

–45

0

45

FREQUENCY – Hz

OPEN-LOOP GAIN – dB

PHASE – Degrees

VS ⴞ2.5V
T

A

– 40ⴗC

R

L

ⴝ 2k⍀

C

L

ⴝ 500pF

TPC 12. Open-Loop Gain and
Phase vs. Frequency

180

160

140

120

100

80

60

40

20

0

10 100 10M1M100k10k1k

TA ⴝ 25ⴗC
V

S

ⴝ ⴞ2.5V OR ⴞ5V

FREQUENCY – Hz

IMPEDANCE – ⍀

A

VCL

ⴝ 1

A

VCL

ⴝ 10 OR 100

TPC 15. Closed-Loop Output
Impedance vs. Frequency

80

0

10k

20

10

0

40

30

50

60

70

8k6k4k2k

LOAD CAPACITANCE – pF

OVERSHOOT – %

TA ⴝ 25ⴗC
A

VCL

ⴝ +1

R

L

1k⍀

V

S

ⴞ2.5V

V

IN

ⴝ 100mV p-p

POSITIVE EDGE AND
NEGATIVE EDGE

TPC 18. Small Signal Overshoot vs.
Load Capacitance