Burr Brown OPA686U-2K5, OPA686U, OPA686N-3K, OPA686N-250 Datasheet

1

®

OPA686

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/ • FAXLine: [phone] (US/Canada Only) • Cable: BBRCORP • Telex: 066-6491 • FAX: [phone] • Immediate Product Info: [phone]

OPA686

®

Wideband, Low Noise,

Voltage Feedback OPERATIONAL AMPLIFIER

APPLICATIONS

● HIGH DYNAMIC RANGE ADC PREAMP

● LOW NOISE, WIDEBAND,

TRANSIMPEDANCE AMPLIFIER

● WIDEBAND, HIGH GAIN AMPLIFIER

● LOW NOISE DIFFERENTIAL RECEIVER

● VDSL LINE RECEIVER

● ULTRASOUND CHANNEL AMPLIFIER

● IMPROVED REPLACEMENT FOR THE

CLC425

FEATURES

● HIGH BANDWIDTH: 250MHz (G = +10)

● LOW INPUT VOLTAGE NOISE: 1.3nV/√Hz

● VERY LOW DISTORTION: –90dBc (5MHz)

● HIGH SLEW RATE: 600V/µs

● HIGH DC ACCURACY

● LOW SUPPLY CURRENT: 12mA

● HIGH GAIN BANDWIDTH PRODUCT:

1600MHz

● STABLE FOR GAINS ≥ 7

DESCRIPTION

The OPA686 combines very high gain bandwidth and large
signal performance with very low input voltage noise while
dissipating a low 12mA supply current. The classical differen­tial input stage, along with two stages of forward gain and a
high power output stage, combine to make the OPA686 an
exceptionally low distortion amplifier with excellent DC accu­racy and output drive. The voltage feedback architecture allows
all standard op amp applications to be implemented with very
high performance.

The combination of low input voltage and current noise, along
with a 1.6GHz gain bandwidth product, make the OPA686 an
ideal amplifier for wideband transimpedance stages. As a volt­age gain stage, the OPA686 is optimized for a flat response at a
gain of +10 and is guaranteed stable down to a noise gain of +7.

High Gain, 20MHz Transimpedance Amplifier

TM

A new external compensation technique can be used to give a
very flat frequency response below the minimum stable gain
for the OPA686, further improving its already exceptional
distortion performance. Using this compensation makes the
OPA686 one of the premier 12- to 14-bit analog-to-digital
converter input drivers. The supply current for the OPA686 is
precisely trimmed to 12.4mA at +25°C. This, along with
carefully defined supply current tempcos in the input and
output stages, combine to provide exceptional performance
over the full specified temperature range.

OPA686

OPA686

©

1997 Burr-Brown Corporation PDS-1370D Printed in U.S.A. May, 2000

OPA686

+5V

–5V

V

O

50kΩ

0.1µF100pF

50kΩ

0.2pF

10pF

Photodiode

I

S

–V

B

Supply decoupling

not shown.

λ

100

95
90
85
80
75
70
65
60

Frequency (MHz)

0.1 1 10 100

20•log (Z

T

) 5dB/div

20log (50kΩ) = 94dBΩ

OPA686 RELATED PRODUCTS

INPUT NOISE GAIN BANDWIDTH

SINGLES DUALS VOLTAGE (nV/

√Hz) PRODUCT (MHz)

OPA643 2.3 800

OPA2686 1.3 1600

OPA687 0.95 3600

For most current data sheet and other product

information, visit www.burr-brown.com

2

®

OPA686

OPA686U, 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)

SPECIFICATIONS: VS = ±5V

RF = 453Ω, RL = 100Ω, and G =+10, unless otherwise noted. Figure 1 for AC performance.

AC PERFORMANCE (Figure 1)

Closed-Loop Bandwidth G = +7, R

G

= 50Ω, VO = 200mVp-p 425 MHz typ C

G = +10, R

G

= 50Ω, VO = 200mVp-p 250 200 170 140 MHz min B

G = +20, R

G

= 50Ω, VO = 200mVp-p 100 80 65 55 MHz min B
Gain Bandwidth Product G ≥ [phone] 1000 MHz min B
Bandwidth for 0.1dB Gain Flatness G = +10, R

L

= 100Ω, VO = 200mVp-p 40 35 30 25 MHz min B
Peaking at a Gain of +7 2 dB typ C
Harmonic Distortion G = +10, f = 5MHz, V

O

= 2Vp-p

2nd Harmonic R

L

= 100Ω –72 –67 –65 –60 dBc max B

R

L

= 500Ω –90 –85 –80 –75 dBc max B

3rd Harmonic R

L

= 100Ω –95 –90 –85 –80 dBc max B

R

L

= 500Ω –110 –105 –100 –95 dBc max B
Two-Tone, 3rd-Order Intercept G = +10, f = 10MHz 43 40 39 37 dBm min B
Input Voltage Noise f > 1MHz 1.3 1.5 1.6 1.7 nV/√Hz max B
Input Current Noise f > 1MHz 1.8 2.3 2.4 2.5 pA/√Hz max B
Rise/Fall Time 0.2V Step 1.4 1.75 2 2.5 ns max B
Slew Rate 2V Step 600 500 400 310 V/µs min B
Settling Time to 0.01% 2V Step 18 ns typ C

0.1% 2V Step 16 14 21 25 ns max B
1% 2V Step 11 12 14 18 ns max B

Differential Gain G = +10, NTSC, R

L

= 150Ω 0.02 % typ C

Differential Phase G = +10, NTSC, R

L

= 150Ω 0.02 deg typ C

DC PERFORMANCE

(4)

Open-Loop Voltage Gain (AOL)V

O

= 0V 80 75 70 70 dB min A

Input Offset Voltage V

CM

= 0V ±0.35 ±1.0 ±1.2 ±1.5 mV max A

Average Offset Voltage Drift V

CM

= 0V 5 10 µV/°C max B

Input Bias Current V

CM

= 0V –10 –17 –18 –20 µA max A

Input Bias Current Drift V

CM

= 0V 50 100 nA/°C max B

Input Offset Current V

CM

= 0V ±0.5 ±1.0 ±1.5 ±1.8 µA max A

Input Offset Current Drift V

CM

= 0V 5 10 nA/°C max B

INPUT

Common-Mode Input Range (CMIR)

(5)

±3.2 ±3.0 ±2.9 ±2.8 V min A

Common-Mode Rejection (CMR) V

CM

= ±1V, Input Referred 100 90 85 75 dB min A

Input Impedance

Differential-Mode V

CM

= 0V 6 || 2 kΩ || pF typ C

Common-Mode V

CM

= 0V 2.9 || 1 MΩ || pF typ C

OUTPUT

Output Voltage Swing ≥ 400Ω Load ±3.5

±3.2 ±3.1 ±3.0 V min A

100Ω Load ±3.3

±3.0 ±2.8 ±2.8 V min A

Current Output, Sourcing V

O

= 0V 80 60 55 50 mA min A

Current Output, Sinking V

O

= 0V –80 –60 –55 –40 mA min A

Closed-Loop Output Impedance G = +10, f = 100kHz 0.008 Ω typ C

POWER SUPPLY

Specified Operating Voltage ±5 V typ C
Maximum Operating Voltage

±6 ±6 ±6 V max A

Max Quiescent Current V

S

= ±5V 12.4 12.9 13 13.9 mA max A

Min Quiescent Current V

S

= ±5V 12.4 11.9 11.9 11 mA min A

Power Supply Rejection Ratio

+PSRR, –PSRR |V

S

| = 4.5 to 5.5, Input Referred 78 70 70 65 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 8-Pin, SO-8 125 °C/W typ C
N 5-Pin, SOT23 150 °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 specified CMR at ±CMIR limits.

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®

OPA686

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.

PIN CONFIGURATIONS

1

2

3

4

8

7

6

5

NC

Inverting Input

Non-Inverting Input

–V

S

DNC

+V

S

Output

NC

DNC: Do Not Connect

NC: No Connection

1

2

3

5

4

Output

–V

S

Non-Inverting Input

+V

S

Inverting Input

1

2

3

5

4

Pin Orientation/Package Marking

A86

Top View SOT23-5

Top View SO-8

PACKAGE
DRAWING TEMPERATURE PACKAGE ORDERING TRANSPORT

PRODUCT PACKAGE NUMBER

(1)

RANGE MARKING NUMBER

(2)

MEDIA

OPA686U SO-8 Surface Mount 182 –40°C to +85°C OPA686U OPA686U Rails

" """"OPA686U/2K5 Tape and Reel

OPA686N 5-Lead SOT23-5 331 –40°C to +85°C A86 OPA686N/250 Tape and Reel

" " " " OPA686N/3K 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 “OPA686U/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

ABSOLUTE MAXIMUM RATINGS

Power Supply ............................................................................... ±6.5V

DC

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

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.

4

®

OPA686

TYPICAL PERFORMANCE CURVES: VS = ±5V

At TA = +25°C, G = +10, RF = 453Ω, and RL = 100Ω, unless otherwise noted.

6
3

0
–3
–6
–9

–12
–15
–18
–21
–24

NON-INVERTING SMALL-SIGNAL

FREQUENCY RESPONSE

Frequency (MHz)

Normalized Gain (3dB/div)

0.5 10 100 500

G = +50

See Figure 1

RG = 50Ω

V

O

= 0.2Vp-p

G = +20

G = +7

G = +10

26
23
20
17
14
11

8

5

2
–1
–4

NON-INVERTING LARGE-SIGNAL

FREQUENCY RESPONSE

Frequency (MHz)

Gain (3dB/div)

0.5 10 100 500

RG = 50Ω

G = +10V/V

VO = 0.2Vp-p

VO = 1Vp-p

VO = 2Vp-p
V

O

= 5Vp-p

See Figure 1

30
29
26
23
20
17
14
11

8
5
2

INVERTING LARGE-SIGNAL FREQUENCY RESPONSE

Frequency (MHz)

Gain (3dB/div)

0.1 10 100 500

RG = RS = 50Ω

G = –20V/V

VO = 0.2Vp-p

VO = 1Vp-p

VO = 2Vp-p

V

O

= 5Vp-p

See Figure 2

100

0

–100

1.5

1.0

0.5
0
–0.5
–1.0
–1.5

NON-INVERTING PULSE RESPONSE

Time (5ns/div)

Output Voltage (100mV/div)

Output Voltage (500mV/div)

G = +10V/V

Large Signal ±1V

Small Signal ±100mV

Right Scale

Left Scale

See Figure 1

100

0

–100

1.5

1.0

0.5
0
–0.5
–1.0
–1.5

INVERTING PULSE RESPONSE

Time (5ns/div)

Output Voltage (100mV/div)

Output Voltage (500mV/div)

G = –20V/V

Large Signal ±1V

Small Signal ±100mV

Right Scale

Left Scale

See Figure 2

6
3

0
–3
–6
–9

–12
–15
–18
–21
–24

INVERTING SMALL-SIGNAL FREQUENCY RESPONSE

Frequency (MHz)

Normalized Gain (3dB/div)

0.5 10 100 500

RG = RS = 50Ω

V

O

= 0.2Vp-p

G = –12

G = –50

G = –20

See Figure 2

5

®

OPA686

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

At TA = +25°C, G = +10, RG = 50Ω, and RL = 100Ω, unless otherwise noted. See Figure 1.

–70

–80

–90

–100

–110

Output Voltage (Vp-p)

0.1 101

5MHz 2nd HARMONIC DISTORTION

vs OUTPUT VOLTAGE

2nd Harmonic Distortion (dBc)

RL = 200Ω

RL = 100Ω

RL = 500Ω

–70

–80

–90

–100

–110

Output Voltage (Vp-p)

0.1 101

5MHz 3rd HARMONIC DISTORTION

vs OUTPUT VOLTAGE

3rd Harmonic Distortion (dBc)

RL = 200Ω

RL = 100Ω

RL = 500Ω

–60

–70

–80

–90

–100

Output Voltage (Vp-p)

0.1 101

10MHz 2nd HARMONIC DISTORTION

vs OUTPUT VOLTAGE

2nd Harmonic Distortion (dBc)

RL = 200Ω

RL = 100Ω

RL = 500Ω

–60

–70

–80

–90

–100

Output Voltage (Vp-p)

0.1 101

10MHz 3rd HARMONIC DISTORTION

vs OUTPUT VOLTAGE

3rd Harmonic Distortion (dBc)

RL = 200Ω

RL = 500Ω

RL = 500Ω

–50

–60

–70

–80

–90

Output Voltage (Vp-p)

0.1 101

20MHz 2nd HARMONIC DISTORTION

vs OUTPUT VOLTAGE

2nd Harmonic Distortion (dBc)

RL = 200Ω

RL = 100Ω

RL = 500Ω

–50

–60

–70

–80

–90

20MHz 3rd HARMONIC DISTORTION

vs OUTPUT VOLTAGE

Output Voltage (Vp-p)

0.1 1 10

3rd Harmonic Distortion (dBc)

RL = 100Ω

RL = 200Ω

RL = 500Ω