Datasheet

ManualsBrandsTEXAS INSTRUMENTS ManualsLinear ICsLinear IC - Op-amp Voltage feedback SOT 23 6

OPA890

5.56kW

DAC7822

DB0

DB1

DB2

DB3

DB4

DB5

DB6

DB7

DB8

DB9

DB10

DB11

REF

OUT1

OUT2

2_3

GNDV

+5V

2.5pF

+7.5V

-2.5V

OUT

0V V 5V£ £

OUT

0.1 Fm

-5V

OPA890

www.ti.com

SBOS369B –MAY 2007–REVISED DECEMBER 2009

Low-Power, Wideband, Voltage-Feedback

OPERATIONAL AMPLIFIER with Disable

Check for Samples: OPA890

FEATURES

DESCRIPTION

• FLEXIBLE SUPPLY RANGE:

The OPA890 represents a major step forward in

+3V to +12V Single Supply

unity-gain stable, voltage-feedback op amps. A new

±1.5V to ±6V Dual Supplies

internal architecture provides slew rate and full-power

• UNITY-GAIN STABLE

bandwidth previously found only in wideband,

• WIDEBAND +5V OPERATION: 115MHz

current-feedback op amps. These capabilities provide

(G = +2V/V)

exceptional full power bandwidth. Using a single +5V

supply, the OPA890 can deliver a 1V to 4V output

• OUTPUT VOLTAGE SWING: ±4V

swing with over 35mA drive current and 220MHz

• HIGH SLEW RATE: 500V/μs

bandwidth. This combination of features makes the

• LOW QUIESCENT CURRENT: 1.1mA

OPA890 an ideal RGB line driver or single-supply

analog-to-digital converter (ADC) input driver.

• LOW DISABLE CURRENT: 30μA

The low 1.1mA supply current of the OPA890 is

APPLICATIONS

precisely trimmed at +25°C. This trim, along with low

• VIDEO LINE DRIVING

temperature drift, ensures lower maximum supply

current than competing products. System power may

• xDSL LINE DRIVERS/RECEIVERS

be reduced further using the optional disable control

• HIGH-SPEED IMAGING CHANNELS

pin. Leaving this disable pin open, or holding it HIGH,

• ADC BUFFERS

operates the OPA890 normally. If pulled LOW, the

• PORTABLE INSTRUMENTS

OPA890 supply current drops to less than 30μA while

the output goes into a high-impedance state.

• TRANSIMPEDANCE AMPLIFIERS

• ACTIVE FILTERS

RELATED OPERATIONAL AMPLIFIER PRODUCTS

DESCRIPTION SINGLES DUALS TRIPLES

Low-Power Voltage-Feedback

— OPA2890 —

with Disable

Voltage-Feedback Amplifier

OPA690 OPA2690 OPA3690

with Disable (1800V/μs)

Current-Feedback Amplifier

OPA691 OPA2691 OPA3691

with Disable (2100V/μs)

Fixed Gain OPA692 — OPA3692

Multiplying DAC Transimpedance Amplifier

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas

Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

2All trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

Summary of content (34 pages)

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OPA890 www.ti.com SBOS369B – MAY 2007 – REVISED DECEMBER 2009 Low-Power, Wideband, Voltage-Feedback OPERATIONAL AMPLIFIER with Disable Check for Samples: OPA890 FEATURES 1 • 2 • • • • • • DESCRIPTION FLEXIBLE SUPPLY RANGE: +3V to +12V Single Supply ±1.5V to ±6V Dual Supplies UNITY-GAIN STABLE WIDEBAND +5V OPERATION: 115MHz (G = +2V/V) OUTPUT VOLTAGE SWING: ±4V HIGH SLEW RATE: 500V/μs LOW QUIESCENT CURRENT: 1.
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OPA890 SBOS369B – MAY 2007 – REVISED DECEMBER 2009 www.ti.com This integrated circuit can be damaged by ESD. Texas Instruments 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.
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OPA890 www.ti.com SBOS369B – MAY 2007 – REVISED DECEMBER 2009 ELECTRICAL CHARACTERISTICS: VS = ±5V Boldface limits are tested at +25°C. At RF = 750Ω, G = +2V/V, and RL = 100Ω, unless otherwise noted.
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OPA890 SBOS369B – MAY 2007 – REVISED DECEMBER 2009 www.ti.com ELECTRICAL CHARACTERISTICS: VS = ±5V (continued) Boldface limits are tested at +25°C. At RF = 750Ω, G = +2V/V, and RL = 100Ω, unless otherwise noted.
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OPA890 www.ti.com SBOS369B – MAY 2007 – REVISED DECEMBER 2009 ELECTRICAL CHARACTERISTICS: VS = +5V Boldface limits are tested at +25°C. At RF = 750Ω, G = +2V/V, and RL = 100Ω, unless otherwise noted. OPA890ID, IDBV TYP PARAMETER MIN/MAX OVER TEMPERATURE +25°C (2) 0°C to +70°C (3) –40°C to +85°C (3) 105 70 60 55 G = +10V/V, VO = 100mVPP 12 8 6.
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OPA890 SBOS369B – MAY 2007 – REVISED DECEMBER 2009 www.ti.com ELECTRICAL CHARACTERISTICS: VS = +5V (continued) Boldface limits are tested at +25°C. At RF = 750Ω, G = +2V/V, and RL = 100Ω, unless otherwise noted.
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OPA890 www.ti.com SBOS369B – MAY 2007 – REVISED DECEMBER 2009 TYPICAL CHARACTERISTICS: VS = ±5V At TA = +25°C, G = +2V/V, RF = 750Ω, and RL = 200Ω, unless otherwise noted. SMALL-SIGNAL FREQUENCY RESPONSE 3 G = +1V/V R F = 0W 0 1VPP 6 -3 2VPP 3 Gain (dB) Normalized Gain (dB) LARGE-SIGNAL FREQUENCY RESPONSE 9 -6 -9 0 4VPP G = +2V/V -3 -12 7VPP G = +5V/V -15 VO = 0.1VPP -6 G = +10V/V -18 1 10 RL = 200W G = +2V/V -9 100 1 600 10 Figure 1.
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OPA890 SBOS369B – MAY 2007 – REVISED DECEMBER 2009 www.ti.com TYPICAL CHARACTERISTICS: VS = ±5V (continued) At TA = +25°C, G = +2V/V, RF = 750Ω, and RL = 200Ω, unless otherwise noted. HARMONIC DISTORTION vs LOAD RESISTANCE 1MHz HARMONIC DISTORTION vs SUPPLY VOLTAGE -80 VO = 2VPP f = 1MHz G = +2V/V -85 3rd Harmonic -90 -95 2nd Harmonic -100 -105 Harmonic Distortion (dBc) Harmonic Distortion (dBc) -80 VO = 2VPP RL = 200W G = +2V/V -85 3rd Harmonic -90 2nd Harmonic -95 -100 -110 100 2.5 1k 3.
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OPA890 www.ti.com SBOS369B – MAY 2007 – REVISED DECEMBER 2009 TYPICAL CHARACTERISTICS: VS = ±5V (continued) At TA = +25°C, G = +2V/V, RF = 750Ω, and RL = 200Ω, unless otherwise noted.
PAGE 10
OPA890 SBOS369B – MAY 2007 – REVISED DECEMBER 2009 www.ti.com TYPICAL CHARACTERISTICS: VS = ±5V (continued) At TA = +25°C, G = +2V/V, RF = 750Ω, and RL = 200Ω, unless otherwise noted. 1.14 49 Supply Current Output Current, Sourcing 1.11 47 46 1.10 45 1.09 44 43 Output Current,Sinking 2.00 1.95 100 1.90 50 1.85 42 1.06 0 Input Offset Voltage (VOS) 1.80 -50 41 1.75 40 1.
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OPA890 www.ti.com SBOS369B – MAY 2007 – REVISED DECEMBER 2009 TYPICAL CHARACTERISTICS: VS = ±5V, Differential At TA = +25°C, Differential Gain = +2V/V, RF = 750Ω, and RL = 400Ω, unless otherwise noted. DIFFERENTIAL SMALL-SIGNAL FREQUENCY RESPONSE DIFFERENTIAL LARGE-SIGNAL FREQUENCY RESPONSE 3 9 GD = 1V/V 6 GD = 5VPP -3 3 Gain (dB) Normalized Gain (dB) 0 -6 GD = 2V/V -9 GD = 5V/V -12 0 GD = 14VPP -3 GD = 10V/V -15 -6 RF = 750W RL = 400W -18 GD = 8VPP -9 1 10 100 300 1 10 Figure 25.
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OPA890 SBOS369B – MAY 2007 – REVISED DECEMBER 2009 www.ti.com TYPICAL CHARACTERISTICS: VS = +5V At TA = +25°C, G = +2V/V, RF = 750Ω, and RL = 200Ω, unless otherwise noted. SMALL-SIGNAL FREQUENCY RESPONSE 3 G = +1V/V R F = 0W 0 6 1VPP -3 3 Gain (dB) Normalized Gain (dB) LARGE-SIGNAL FREQUENCY RESPONSE 9 -6 -9 G = +2V/V 2VPP -3 -12 3VPP G = +5V/V -6 -15 VO = 100mVPP 0 RL = 200W G = +2V/V G = +10V/V -18 -9 1 10 100 1 500 10 Figure 30. 300 Figure 31.
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OPA890 www.ti.com SBOS369B – MAY 2007 – REVISED DECEMBER 2009 TYPICAL CHARACTERISTICS: VS = +5V (continued) At TA = +25°C, G = +2V/V, RF = 750Ω, and RL = 200Ω, unless otherwise noted. HARMONIC DISTORTION vs LOAD RESISTANCE 5.5 4.0 4.5 3.5 3.5 3.0 Output Voltage Left Scale 2.5 2.5 Input Voltage Right Scale 1.5 2.0 0.5 1.5 -0.5 1.0 -75 Harmonic Distortion (dBc) 4.5 Input Voltage (1V/div) Output Voltage (1V/div) NONINVERTING OVERDRIVE RECOVERY 6.
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OPA890 SBOS369B – MAY 2007 – REVISED DECEMBER 2009 www.ti.com TYPICAL CHARACTERISTICS: VS = +5V, Differential At TA = +25°C, Differential Gain = +2V/V, RF = 750Ω, and RL = 400Ω, unless otherwise noted. DIFFERENTIAL SMALL-SIGNAL FREQUENCY RESPONSE DIFFERENTIAL LARGE-SIGNAL FREQUENCY RESPONSE 6 9 GD = 2V/V 6 0 3 -3 Gain (dB) Normalized Gain (dB) 3 GD = 1V/V RF = 0W -6 -9 -15 -18 1VPP -6 RF = 750W RL = 400W GD = 10V/V 10 1 0 -3 GD = 5V/V -12 4VPP -9 100 200 10 1 Figure 41.
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OPA890 www.ti.com SBOS369B – MAY 2007 – REVISED DECEMBER 2009 APPLICATION INFORMATION WIDEBAND VOLTAGE-FEEDBACK OPERATION +5V The OPA890 provides an exceptional combination of low quiescent current with a wideband, unity-gain stable, voltage-feedback op amp using a new high slew rate input stage. Typical differential input stages used for voltage-feedback op amps are designed to steer a fixed-bias current to the compensation capacitor, setting a limit to the achievable slew rate.
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OPA890 SBOS369B – MAY 2007 – REVISED DECEMBER 2009 www.ti.com The frequency response of the schematic shown in Figure 48 is shown in Figure 49. +5V +VS + 0.1mF 50W Source 0.1mF VI 59W +5V 6.8mF 698W 50W 698W DIS VO OPA890 100W VS/2 RF 750W RG 750W VDD GND DB0 DB1 VREF DB2 ½ DB3 R1 DAC7822 DB4 RFB DB5 DB6 IOUT1 DB7 IOUT2 DB8 DB9 R2 DB10 R2_3 DB11 R3 -5V +7.5V 2.5pF OPA890 VOUT 0V £ VOUT £ 5V 5.56kW 0.1mF -2.5V 0.1mF Figure 48. DAC Transimpedance Amplifier Figure 47.
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OPA890 www.ti.com SBOS369B – MAY 2007 – REVISED DECEMBER 2009 Driving a light load, the OPA890 can output ±4V over ±5V supplies. Setting the reference voltage to –5V results in an output voltage swing from 0V to 5V. In order to optimize the OPA2890 operation for this application, the supply voltages have been adjusted so that the output voltage swing is balanced around mid-supply of the amplifier.
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OPA890 SBOS369B – MAY 2007 – REVISED DECEMBER 2009 www.ti.com SINGLE-SUPPLY ACTIVE FILTERS The high bandwidth provided by the OPA890, while operating on a single +5V supply, lends itself well to high-frequency active filter designs. Again, the key additional requirement is to establish the dc operating point of the signal near the supply midpoint for highest dynamic range. See Figure 50 for an example design of a 5MHz low-pass Butterworth filter using the Sallen-Key topology.
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OPA890 www.ti.com SBOS369B – MAY 2007 – REVISED DECEMBER 2009 OPERATING SUGGESTIONS OPTIMIZING RESISTOR VALUES Because the OPA890 is a unity-gain stable, voltage-feedback op amp, a wide range of resistor values can be used for the feedback and gain setting resistors. The primary limits on these values are set by dynamic range (noise and distortion) and parasitic capacitance considerations. Usually, for G > 1 applications, the feedback resistor value should be between 200Ω and 1.5kΩ.
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OPA890 SBOS369B – MAY 2007 – REVISED DECEMBER 2009 www.ti.com DRIVING CAPACITIVE LOADS +5V + 0.1mF 6.8mF 0.1mF DIS RB 240W 50W Source RO 50W 0.1mF OPA890 50W Load RG 324W RF 750W RM 59W 0.1mF + 6.8mF -5V Figure 51. Gain of –2V/V Example Circuit The second major consideration, touched on in the previous paragraph, is that the signal source impedance becomes part of the noise gain equation and influences the bandwidth.
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OPA890 www.ti.com SBOS369B – MAY 2007 – REVISED DECEMBER 2009 DC ACCURACY AND OFFSET CONTROL ENI RS EO OPA890 IBN RF ERS Ö 4kTRS IBI RG 4kT RG Ö 4kTRF 4kT = 1.6E - 20J at 290°K Figure 52. Op Amp Noise Analysis Model The total output spot noise voltage can be computed as the square root of the sum of all squared output noise voltage contributors. Equation 4 shows the general form for the output noise voltage using the terms shown in Figure 52.
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OPA890 SBOS369B – MAY 2007 – REVISED DECEMBER 2009 www.ti.com +5V Power-supply decoupling not shown. 0.1mF 226W OPA890 RG 324W +5V 5kW -5V VO RF 750W VI 20kW ±150mV Output Adjustment 10kW VO 0.1mF VI 5kW =- RF RG = -2 -5V Figure 53. DC-Coupled, Inverting Gain of -2V/V, with Offset Adjustment DISABLE OPERATION The OPA890 provides an optional disable feature that may be used either to reduce system power or to implement a simple channel multiplexing operation.
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OPA890 www.ti.com SBOS369B – MAY 2007 – REVISED DECEMBER 2009 BOARD LAYOUT GUIDELINES Achieving optimum performance with a high-frequency amplifier such as the OPA890 requires careful attention to board layout parasitics and external component types. Recommendations that optimize performance include the following: a. Minimize parasitic capacitance to any ac ground for all of the signal I/O pins.
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OPA890 SBOS369B – MAY 2007 – REVISED DECEMBER 2009 www.ti.com series-terminated at the source end only. Treat the trace as a capacitive load in this case, and set the series resistor value as shown in the plot of Recommended RS vs Capacitive Load. This configuration does not preserve signal integrity as well as a doubly-terminated line.
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OPA890 www.ti.com SBOS369B – MAY 2007 – REVISED DECEMBER 2009 REVISION HISTORY NOTE: Page numbers for previous revisions may differ from page numbers in the current version. Changes from Revision A (May 2008) to Revision B Page • Changed min/max over temperature specifications for Input, Common-Mode Input Range (CMIR) parameter of ±5V electrical characteristics ...............................................................................................................................................
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE OPTION ADDENDUM www.ti.com 11-Apr-2013 (4) Multiple Top-Side Markings will be inside parentheses. Only one Top-Side Marking contained in parentheses and separated by a "~" will appear on a device. If a line is indented then it is a continuation of the previous line and the two combined represent the entire Top-Side Marking for that device. Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided.
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PACKAGE MATERIALS INFORMATION www.ti.com 26-Jan-2013 TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Pins Type Drawing SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) OPA890IDBVR SOT-23 DBV 6 3000 180.0 OPA890IDBVT SOT-23 DBV 6 250 OPA890IDR SOIC D 8 2500 B0 (mm) K0 (mm) P1 (mm) 8.4 3.2 3.1 1.39 4.0 180.0 8.4 3.2 3.1 1.39 330.0 12.4 6.4 5.2 2.1 Pack Materials-Page 1 W Pin1 (mm) Quadrant 8.0 Q3 4.0 8.0 Q3 8.0 12.
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PACKAGE MATERIALS INFORMATION www.ti.com 26-Jan-2013 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) OPA890IDBVR SOT-23 DBV 6 3000 210.0 185.0 35.0 OPA890IDBVT SOT-23 DBV 6 250 210.0 185.0 35.0 OPA890IDR SOIC D 8 2500 367.0 367.0 35.
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IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, enhancements, improvements and other changes to its semiconductor products and services per JESD46, latest issue, and to discontinue any product or service per JESD48, latest issue. Buyers should obtain the latest relevant information before placing orders and should verify that such information is current and complete.