Burr Brown OPA2680N, OPA2680U, OPA2680U-2K5, OPA2680N-2K5 Datasheet

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®

OPA2680

©

1997 Burr-Brown Corporation PDS-1433C Printed in U.S.A. October, 1999

Dual Wideband, Voltage Feedback

OPERATIONAL AMPLIFIER With Disable

TM

FEATURES

● WIDEBAND +5V OPERATION: 220MHz (G = 2)

● HIGH OUTPUT CURRENT: 150mA

● OUTPUT VOLTAGE SWING: ±4.0V

● HIGH SLEW RATE: 1800V/µs

● LOW SUPPLY CURRENT: 6.4mA/Ch.

● LOW DISABLED CURRENT: 300µA/Ch.

● ENABLE/DISABLE TIME: 25ns/100ns

APPLICATIONS

● VIDEO LINE DRIVING

● xDSL LINE DRIVER/RECEIVER

● HIGH SPEED IMAGING CHANNELS

● ADC BUFFERS

● PORTABLE INSTRUMENTS

● TRANSIMPEDANCE AMPLIFIERS

● ACTIVE FILTERS

Single-Supply, DC-Coupled, Single-to-Differential ADC Driver

DESCRIPTION

The OPA2680 represents a major step forward in unity
gain stable, voltage feedback op amps. A new internal
architecture provides slew rate and full power band­width previously found only in wideband current feed­back op amps. A new output stage architecture delivers
high currents with a minimal headroom requirement.
These combine to give exceptional single supply opera­tion. Using a single +5V supply, the OPA2680 can
deliver a 1V to 4V output swing with over 100mA drive
current and 150MHz bandwidth. This combination of
features makes the OPA2680 an ideal RGB line driver
or single supply ADC input driver.

The OPA2680’s low 6.4mA/ch. supply current is pre­cisely trimmed at 25°C. This trim, along with low tem­perature drift, guarantees lower maximum supply current
than competing products. System power may be reduced
further using the optional disable control pin (SO-14
package only). Leaving this disable pin open, or holding
it high, will operate the OPA2680N normally. If pulled
low, the OPA2680N supply current drops to less than
600µA while the output goes into a high impedance state.

1/2

OPA2680

1/2

OPA2680

+5V

50Ω

V

IN

0V to +1V

1.5kΩ

1.5kΩ

50Ω

1.6kΩ

1.6kΩ

3.2kΩ

800Ω

400Ω 400Ω 50Ω

200Ω

0.1µF

IN

+3.5V

0.1µF

+1.5V

+5V

10pF

10pF

Clock

IN

0.1µF

+2.5V

+1.5V

REFT

REFB

ADS822

10-Bit

40MSPS

2.5V

CM

±1V

DIFF

OPA2680 RELATED PRODUCTS

SINGLES DUALS TRIPLES

Voltage Feedback OPA680 OPA2680 OPA3680
Current Feedback OPA681 OPA2681 OPA3681
Fixed Gain OPA682 OPA2682 OPA3682

OPA2680

OPA2680

2

®

OPA2680

SPECIFICATIONS: VS = ±5V

RF = 402Ω, RL = 100Ω, and G = +2, (Figure 1 for AC performance only), unless otherwise noted.

OPA2680U, N

TYP GUARANTEED

0°C to –40°C to

MIN/

TEST

PARAMETER CONDITIONS +25°C +25°C

(2)

70°C

(3)

+85°C

(3)

UNITS MAX

LEVEL

(1)

AC PERFORMANCE (Figure 1)

Small-Signal Bandwidth G = +1, V

O

= 0.5Vp-p, RF = 25Ω 400 MHz typ C

G = +2, V

O

= 0.5Vp-p 220 210 200 190 MHz min B

G = +10, V

O

= 0.5Vp-p 30 20 20 20 MHz min B
Gain-Bandwidth Product G ≥ 10 300 200 200 200 MHz min B
Bandwidth for 0.1dB Gain Flatness G = +2, V

O

< 0.5Vp-p 30 MHz typ C

Peaking at a Gain of +1 V

O

< 0.5Vp-p 4 dB typ C

Large Signal Bandwidth G = +2, V

O

= 5Vp-p 175 MHz typ C
Slew Rate G = +2, 4V Step 1800 1400 1200 900 V/µs min C
Rise/Fall Time G = +2, V

O

= 0.5V Step 1.4 ns typ C

G = +2, V

O

= 5V Step 2.8 ns typ C

Settling Time to 0.02% G = +2, V

O

= 2V Step 12 ns typ C

0.1% G = +2, V

O

= 2V Step 8 ns typ C

Harmonic Distortion G = +2, f = 5MHz, V

O

= 2Vp-p

2nd Harmonic R

L

= 100Ω –68 –63 –62 –60 dBc max ,

R

L

≥ 500Ω –80 –70 –68 –65 dBc max B

3rd Harmonic R

L

= 100Ω –80 –75 –73 –70 dBc max B

R

L

≥ 500Ω –88 –85 –83 –80 dBc max B
Input Voltage Noise f > 1MHz 4.8 5.3 5.9 6.1 nV/√Hz max B
Input Current Noise f > 1MHz 2.5 2.8 3.0 3.6 pA/√Hz max B
Differential Gain G = +2, NTSC, V

O

= 1.4Vp, RL = 150 0.05 % typ C

Differential Phase G = +2, NTSC, V

O

= 1.4Vp, RL = 150 0.03 deg typ C

Channel-to-Channel Crosstalk f = 5MHz –70 dBc typ C

DC PERFORMANCE

(4)

Open-Loop Voltage Gain (AOL)V

O

= 0V, RL = 100Ω 58 54 52 50 dB min A

Input Offset Voltage V

CM

= 0V ±1.0 ±4.5 ±5.2 ±6.0 mV max A

Average Offset Voltage Drift V

CM

= 0V ±10 ±10 µV/°C max B

Input Bias Current V

CM

= 0V +8 +14 +19 +32 µA max A

Average Bias Current Drift (magnitude) V

CM

= 0V –70 –150 nA/°C max B

Input Offset Current V

CM

= 0V ±0.1 ±0.7 ±1 ±1.2 µA max A

Average Offset Current Drift V

CM

= 0V ±1 ±1.5 nA/°C max B

INPUT

Common-Mode Input Range (CMIR)

(5)

±3.5 ±3.4 ±3.3 ±3.2 V min A

Common-Mode Rejection Ratio (CMRR) V

CM

= ±1V 59 56 53 52 dB min A

Input Impedance

Differential-Mode V

CM

= 0 190 || 0.6 kΩ || pF typ C

Common-Mode V

CM

= 0 3.2 || 0.9 MΩ || pF typ C

OUTPUT

Voltage Output Swing No Load ±4.0

±3.8 ±3.7 ±3.6 V min A

100Ω Load ±3.9

±3.7 ±3.6 ±3.3 V min A

Current Output, Sourcing V

O

= 0 +190 +160 +140 +80 mA min A

Current Output, Sinking V

O

= 0 –150 –135 –130 –80 mA min A

Closed-Loop Output Impedance G = +2, f = 100kHz 0.03 Ω typ C
DISABLE (SO-14 Only) Disabled Low

Power Down Supply Current (+V

S

)V

DIS

= 0, Both Channels –600 µA typ C
Disable Time 100 ns typ C
Enable Time 25 ns typ C
Off Isolation G = +2, 5MHz 70 dB typ C
Output Capacitance in Disable 4 pF typ C
Turn On Glitch G = +2, R

L

= 150Ω, VIN = 0 ±50 mV typ C

Turn Off Glitch G = +2, R

L

= 150Ω, VIN = 0 ±20 mV typ C
Enable Voltage 3.3 3.5 3.6 3.7 V min A
Disable Voltage 1.8 1.7 1.6 1.5 V max A
Control Pin Input Bias Current (V

DIS

)V

DIS

= 0, Each Channel 100 160 160 160 µA max A

POWER SUPPLY

Specified Operating Voltage ±5 V typ C
Maximum Operating Voltage Range

±6 ±6 ±6 V max A

Max Quiescent Current V

S

= ±5V 12.8 13.6 14.0 14.4 mA max A

Min Quiescent Current V

S

= ±5V 12.8 12.0 12.0 10.6 mA min A

Power Supply Rejection (+PSRR) Input Referred 65 60 58 56 dB min A

THERMAL CHARACTERISTICS

Specified Operating Range U, N Package

–40 to +85

°C typ C

Thermal Resistance,

θ

JA

Junction-to-Ambient
U SO-8 125 °C/W typ C
N SO-14 100 °C/W typ C

NOTES: (1) Test Levels: (A) 100% tested at 25°C. Over temperature limits by characterization and simulation. (B) Limits set by characterization and simulation.
(C) Typical value only for information. (2) Junction temperature = ambient for 25°C guaranteed specifications. (3) Junction temperature = ambient at low temperature
limit: junction temperature = ambient +23°C at high temperature limit for over temperature guaranteed specifications. (4) Current is considered positive-out-of node.
V

CM

is the input common-mode voltage. (5) Tested < 3dB below minimum CMRR specification at ±CMIR limits.

®

OPA2680

3

SPECIFICATIONS: VS = +5V

RF = 402Ω, RL = 100Ω to VS/2, G = +2, (Figure 2 for AC performance only), unless otherwise noted.

OPA2680U, N

TYP GUARANTEED

0°C to –40°C to

MIN/

TEST

PARAMETER CONDITIONS +25°C +25°C

(2)

70°C

(3)

+85°C

(3)

UNITS MAX

LEVEL

(1)

AC PERFORMANCE (Figure 2)

Small-Signal Bandwidth G = +1, V

O

< 0.5Vp-p, RF = ±25Ω 300 MHz typ C

G = +2, VO < 0.5Vp-p 220 120 160 140 MHz min B

G = +10, V

O

< 0.5Vp-p 25 20 19 18 MHz min B
Gain-Bandwidth Product G ≥ 10 250 200 190 180 MHz min B
Bandwidth for 0.1dB Gain Flatness G = +2, V

O

< 0.5Vp-p 20 MHz typ C

Peaking at a Gain of +1 V

O

< 0.5Vp-p 5 dB typ C
Large Signal Bandwidth G = +2, VO = 2Vp-p 200 MHz typ C
Slew Rate G = +2, 2V Step 1000 700 670 550 V/µs min B
Rise/Fall Time G = +2, V

O

= 0.5V Step 1.6 ns typ C

G = +2, V

O

= 2V Step 2.0 ns typ C

Settling Time to 0.02% G = +2, V

O

= 2V Step 12 ns typ C

0.1% G = +2, V

O

= 2V Step 8 ns typ C

Harmonic Distortion G = +2, f = 5MHz, V

O

= 2Vp-p

2nd Harmonic R

L

= 100Ω to VS/2 –60 –55 –54 –51 dBc max B

R

L

≥ 500Ω to VS/2 –70 –66 –63 –59 dBc max B

3rd Harmonic R

L

= 100Ω to VS/2 –72 –66 –64 –62 dBc max B

R

L

≥ 500Ω to VS/2 –80 –76 –74 –71 dBc max B
Input Voltage Noise f > 1MHz 5 5.3 6.0 6.2 nV/√Hz max B
Input Current Noise f > 1MHz 2.5 2.8 3.0 3.4 pA/√Hz max B
Differential Gain G = +2, NTSC, V

O

= 1.4Vp, RL = 150 to VS/2 0.06 % typ C

Differential Phase G = +2, NTSC, V

O

= 1.4Vp, RL = 150 to VS/2 0.03 deg typ C

DC PERFORMANCE

(4)

Open-Loop Voltage Gain VO = 2.5V, RL = 100Ω to 2.5V 58 54 52 50 dB min A
Input Offset Voltage V

CM

= 2.5V ±2.0 ±6.0 ±7 ±8.5 mV max A

Average Offset Voltage Drift V

CM

= 2.5V –10 –12 µV/°C max B

Input Bias Current V

CM

= 2.5V +8 +15 +18 +32 µA max A

Average Bias Current Drift (magnitude) V

CM

= 2.5V –52 –52 nA/°C max B

Input Offset Current V

CM

= 2.5V ±0.1 ±0.6 ±1.0 ±1.2 µA max A

Average Offset Current Drift V

CM

= 2.5V ±0.5 ±1.0 nA/°C max B

INPUT

Least Positive Input Voltage

(5)

1.5 1.6 1.7 1.8 V max A

Most Positive Input Voltage

(5)

3.5 3.4 3.3 3.2 V min A

Common-Mode Rejection Ratio (CMRR) V

CM

= 2.5V ±0.5V 59 56 53 52 dB min A

Input Impedance

Differential-Mode V

CM

= 2.5V 92 || 1.4 kΩ || pF typ C

Common-Mode V

CM

= 2.5V 2.2 || 1.5 MΩ || pF typ C

OUTPUT

Most Positive Output Voltage No Load 4 3.8 3.6 3.5 V min A

R

L

= 100Ω to 2.5V 3.9 3.7 3.5 3.4 V min A
Least Positive Output Voltage No Load 1 1.2 1.4 1.5 V max A

R

L

= 100Ω to 2.5V 1.1 1.3 1.5 1.7 V max A
Current Output, Sourcing +150 +110 +110 +60 mA min A
Current Output, Sinking –110 –75 –70 –50 mA min A
Closed-Loop Output Impedance G =+2, f = 100kHz 0.03 Ω typ C

DISABLE (SO-14 Only) Disabled Low
Power Down Supply Current (+V

S

)V

DIS

= 0, Both Channels –500 µA typ C
Disable Time 100 ns typ C
Enable Time 25 ns typ C
Off Isolation G = +2, 5MHz 65 dB typ C
Output Capacitance in Disable 4 pF typ C
Turn On Glitch G = +2, R

L

= 150Ω, VIN = VS /2 ±50 mV typ C

Turn Off Glitch G = +2, R

L

= 150Ω, VIN = VS /2 ±20 mV typ C
Enable Voltage 3.3 3.5 3.6 3.7 V min A
Disable Voltage 1.8 1.7 1.6 1.5 V max A
Control Pin Input Bias Current (V

DIS

)V

DIS

= 0, Each Channel 100 µA typ C

POWER SUPPLY

Specified Single Supply Operating Voltage 5 V typ C
Maximum Single Supply Operating Voltage 12 12 12 V max B
Max Quiescent Current V

S

= +5V 10.2 12.0 12.0 12.0 mA max A

Min Quiescent Current V

S

= +5V 10.2 8.0 8.0 7.6 mA min A

Power Supply Rejection (+PSRR) Input Referred 55 dB typ C

TEMPERATURE RANGE

Specification: U, N

–40 to +85

°C typ C

Thermal Resistance,

θ

JA

Junction-to-Ambient
U SO-8 125 °C/W typ C
N SO-14 100 °C/W typ C

NOTES: (1) Test Levels: (A) 100% tested at 25°C. Over temperature limits by characterization and simulation. (B) Limits set by characterization and simulation.
(C) Typical value only for information. (2) Junction temperature = ambient for 25°C guaranteed specifications. (3) Junction temperature = ambient at low temperature
limit: Junction temperature = ambient +23°C at high temperature limit for over temperature guaranteed specifications. (4) Current is considered positive-out-of node.
V

CM

is the input common-mode voltage. (5) Tested < 3dB below minimum CMRR specification at ±CMIR limits.

4

®

OPA2680

PIN CONFIGURATIONS

Top View SO-8

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.

ABSOLUTE MAXIMUM RATINGS

Power Supply .............................................................................. ±6.5VDC

Internal Power Dissipation ..................................... See Thermal Analysis

Differential Input Voltage .................................................................. ±1.2V

Input Voltage Range ............................................................................ ±V

S

Storage Temperature Range: U, N................................ –40°C to +125°C

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

Junction Temperature (T

J

) ........................................................... +175°C

1
2
3
4

8
7
6
5

+V

S

Out B
–In B
+In B

Out A

–In A
+In A

–V

S

A

B

SO-14

1

2

3

4

5

6

7

14

13

12

11

10

9

8

–In A

+In A

DISA

–V

S

DISB

+In B

–In B

Out A

NC

NC

+V

S

NC

NC

Out B

PACKAGE SPECIFIED
DRAWING TEMPERATURE PACKAGE ORDERING TRANSPORT

PRODUCT PACKAGE NUMBER

(1)

RANGE MARKING NUMBER

(2)

MEDIA

OPA2680U SO-8 Surface Mount 182 –40°C to +85°C OPA2680U OPA2680U Rails

"""""OPA2680U/2K5 Tape and Reel

OPA2680N SO-14 Surface mount 235 –40°C to +85°C OPA2680N OPA2680N Rails

"""""OPA2680N/2K5 Tape and Reel

NOTES: (1) For detailed drawing and dimension table, please see end of data sheet, or Appendix C of Burr-Brown IC Data Book. (2) Models with a slash (/ ) are
available only in Tape and Reel in the quantities indicated (e.g., /2K5 indicates 2500 devices per reel). Ordering 2500 pieces of “OPA2680U/2K5” will get a single
2500-piece Tape and Reel. For detailed Tape and Reel mechanical information, refer to Appendix B of Burr-Brown IC Data Book.

PACKAGE/ORDERING INFORMATION

ELECTROSTATIC
DISCHARGE SENSITIVITY

Electrostatic discharge can cause damage ranging from perfor­mance degradation to complete device failure. Burr-Brown Corpo­ration recommends that all integrated circuits be handled and stored
using appropriate ESD protection methods.

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 published specifications.

®

OPA2680

5

TYPICAL PERFORMANCE CURVES: VS = ±5V

At TA = +25°C, G = +2, RF = 402Ω, and RL = 100Ω, unless otherwise noted. See Figure 1.

6
3

0
–3
–6
–9

–12
–15
–18
–21
–24

SMALL-SIGNAL FREQUENCY RESPONSE

Frequency (MHz)

Normalized Gain (3dB/div)

0.5 10 100 500

G = +5

VO = 0.5Vp-p

G = +10

G = +2

G = +1

R

F

= 25Ω

15
12

9
6
3

0
–3
–6
–9

–12
–15

LARGE-SIGNAL FREQUENCY RESPONSE

Frequency (MHz)

0.5 10 100 500

VO = 7Vp-p

VO = 1Vp-p

VO = 2Vp-p

VO = 4Vp-p

Gain (3dB/div)

400
300
200
100

0
–100
–200
–300
–400

SMALL-SIGNAL PULSE RESPONSE

Time (5ns/div)

Output Voltage (100mV/div)

G = +2

V

O

= 0.5Vp-p

+4
+3
+2
+1

0
–1
–2
–3
–4

LARGE-SIGNAL PULSE RESPONSE

Time (5ns/div)

Output Voltage (1V/div)

G = +2

V

O

= 5Vp-p

CHANNEL-TO-CHANNEL CROSSTALK

0
–10
–20
–30
–40
–50
–60
–70
–80
–90

–100

Frequency (MHz)

1 10 100

Crosstalk (10dB/div)

2.0

1.6

1.2

0.8

0.4
0

5.0

4.0

2.0
0

LARGE-SIGNAL DISABLE/ENABLE RESPONSE

Time (50ns/div)

V

O

(0.4V/div)

V

DIS

(2V/div)

Output Voltage

V

DIS

G = +2

V

IN

= +1V

Each Channel

SO-14 Package

Only

6

®

OPA2680

TYPICAL PERFORMANCE CURVES: VS = ±5V (CONT)

At TA = +25°C, G = +2, RF = 402Ω, and RL = 100Ω, unless otherwise noted. See Figure 1.

–60

–65

–70

–75

–80

–85

–90

5MHz 2nd HARMONIC DISTORTION

vs OUTPUT VOLTAGE

Output Voltage Swing (Vp-p)

0.1 1 10

2nd Harmonic Distortion (dBc)

RL = 200Ω

RL = 500Ω

RL = 100Ω

–60

–65

–70

–75

–80

–85

–90

5MHz 3rd HARMONIC DISTORTION

vs OUTPUT VOLTAGE

Output Voltage Swing (Vp-p)

0.1 1 10

3rd Harmonic Distortion (dBc)

RL = 200Ω

RL = 100Ω

RL = 500Ω

–60

–65

–70

–75

–80

–85

–90

10MHz 2nd HARMONIC DISTORTION

vs OUTPUT VOLTAGE

Output Voltage Swing (Vp-p)

0.1 1 10

2nd Harmonic Distortion (dBc)

RL = 500Ω

RL = 100Ω

RL = 200Ω

–60

–65

–70

–75

–80

–85

–90

10MHz 3rd HARMONIC DISTORTION

vs OUTPUT VOLTAGE

Output Voltage Swing (Vp-p)

0.1 1 10

3rd Harmonic Distortion (dBc)

RL = 500Ω

RL = 100Ω

RL = 200Ω

–50

–55

–60

–65

–70

–75

–80

20MHz 2nd HARMONIC DISTORTION

vs OUTPUT VOLTAGE

Output Voltage Swing (Vp-p)

0.1 1 10

2nd Harmonic Distortion (dBc)

RL = 500Ω

RL = 100Ω

RL = 200Ω

–50

–55

–60

–65

–70

–75

–80

20MHz 3rd HARMONIC DISTORTION

vs OUTPUT VOLTAGE

Output Voltage Swing (Vp-p)

0.1 1 10

3rd Harmonic Distortion (dBc)

RL = 500Ω

RL = 100Ω

RL = 200Ω

®

OPA2680

7

TYPICAL PERFORMANCE CURVES: VS = ±5V (CONT)

At TA = +25°C, G = +2, RF = 402Ω, and RL = 100Ω, unless otherwise noted. See Figure 1.

–40
–45
–50
–55
–60
–65
–70
–75
–80
–85
–90

2nd HARMONIC DISTORTION vs FREQUENCY

Frequency (MHz)

0.1 1 10 20

2nd Harmonic Distortion (dBc)

VO = 2Vp-p
R

L

= 100Ω

G = +2

G = +10

G = +5

–40
–45
–50
–55
–60
–65
–70
–75
–80
–85
–90

3rd HARMONIC DISTORTION vs FREQUENCY

Frequency (MHz)

0.1 1 10 20

3rd Harmonic Distortion (dBc)

VO = 2Vp-p
R

L

= 100Ω

G = +2

G = +10

G = +5

–40

–50

–60

–70

–80

–90

TWO-TONE, 3rd-ORDER SPURIOUS LEVEL

Single-Tone Load Power (dBm)

–8–6–4–20246810

3rd-Order Spurious Level (dBc)

50MHz

20MHz

10MHz

Load Power at matched 50Ω load

80
70
60
50
40
30
20
10

0

RECOMMENDED R

S

vs CAPACITIVE LOAD

Capacitive Load (pF)

10 100

R

S

(Ω)

12

9
6
3

0
–3
–6
–9

–12
–15
–18

FREQUENCY RESPONSE vs CAPACITIVE LOAD

Frequency (20MHz/div)

0 200MHz100MHz

Gain-to-Capacitive Load (3dB/div)

1/2

OPA2680

R

S

V

IN

V

O

C

L

1kΩ

402Ω

402Ω

1kΩ is optional

CL = 22pF

CL = 10pF

G = +2

CL = 47pF

CL = 100pF

100

10

1

INPUT VOLTAGE AND CURRENT NOISE DENSITY

Frequency (Hz)

100 1k 10k 100k 1M 10M

Voltage Noise (nV/√Hz)

Current Noise (pA/√Hz)

Voltage Noise

Current Noise

2.5pA/√Hz

4.8nV/√Hz