Datasheet

ManualsBrandsTEXAS INSTRUMENTS ManualsLinear ICsLinear IC - Op-amp Voltage feedback VSSOP 10

200W

750W

1/2

OPA2890

750W

1/2

OPA2890

REF

200W

+6V

+5V

+6V

-6V

0.01 Fm

1kW 50W

500pF

375W

16W

0V 4V®

500kHzLP

Pole

16-Bit

1MSPS

SARADC

ADS8472

OPA2890

www.ti.com

SBOS364C –DECEMBER 2007–REVISED DECEMBER 2009

Low-Power, Wideband, Voltage-Feedback

OPERATIONAL AMPLIFIER with Disable

Check for Samples: OPA2890

FEATURES

DESCRIPTION

• FLEXIBLE SUPPLY RANGE:

The OPA2890 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: 90MHz

current-feedback op amps. These capabilities give

(G = 2V/V)

exceptional single-supply operation. Using a single

+5V supply, the OPA2890 can deliver a 0.9V to 4.1V

• OUTPUT VOLTAGE SWING: ±4.1V

output swing with over 30mA drive current and

• HIGH SLEW RATE: 400V/μs

210MHz bandwidth. This combination of features

• LOW QUIESCENT CURRENT: 1.1mA/ch

makes the OPA2890 an ideal RGB line driver or

single-supply analog-to-digital converter (ADC) input

• LOW DISABLE CURRENT: 30μA/ch

driver.

APPLICATIONS

The low 1.1mA/ch supply current of the OPA2890 is

• VIDEO LINE DRIVING

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

temperature drift, ensures lower maximum supply

• xDSL LINE DRIVERS/RECEIVERS

current than competing products. System power may

• HIGH-SPEED IMAGING CHANNELS

be reduced further using the optional disable control

• ADC BUFFERS

pin (MSOP-10 package only). Leaving this disable pin

• PORTABLE INSTRUMENTS

open, or holding it high, operates the OPA2890

normally. If pulled low, the OPA2890 supply current

• TRANSIMPEDANCE AMPLIFIERS

drops to less than 30μA/ch while the output goes into

• ACTIVE FILTERS

a high-impedance state.

OPERATIONAL AMPLIFIER

PRODUCTS

SINGLES DUALS TRIPLES

Low-power voltage-feedback

OPA890

with disable

Very low-power

OPA2889

voltage-feedback with disable

Voltage-feedback amplifier

OPA690 OPA2690 OPA3690

with disable (1800V/μs)

Low Power, DC-Coupled, Single-to-Differential

Driver for ≤100kHz Inputs

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 (37 pages)

PAGE 1
OPA2890 www.ti.com SBOS364C – DECEMBER 2007 – REVISED DECEMBER 2009 Low-Power, Wideband, Voltage-Feedback OPERATIONAL AMPLIFIER with Disable Check for Samples: OPA2890 FEATURES 1 • 2 • • • • • • DESCRIPTION FLEXIBLE SUPPLY RANGE: +3V to +12V Single Supply ±1.5V to ±6V Dual Supplies UNITY-GAIN STABLE WIDEBAND +5V OPERATION: 90MHz (G = 2V/V) OUTPUT VOLTAGE SWING: ±4.1V HIGH SLEW RATE: 400V/μs LOW QUIESCENT CURRENT: 1.
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OPA2890 SBOS364C – DECEMBER 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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OPA2890 www.ti.com SBOS364C – DECEMBER 2007 – REVISED DECEMBER 2009 ELECTRICAL CHARACTERISTICS: VS = ±5V At TA = +25°C, RF = 0Ω, G = +1V/V, and RL = 200Ω, unless otherwise noted.
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OPA2890 SBOS364C – DECEMBER 2007 – REVISED DECEMBER 2009 www.ti.com ELECTRICAL CHARACTERISTICS: VS = ±5V (continued) At TA = +25°C, RF = 0Ω, G = +1V/V, and RL = 200Ω, unless otherwise noted.
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OPA2890 www.ti.com SBOS364C – DECEMBER 2007 – REVISED DECEMBER 2009 ELECTRICAL CHARACTERISTICS: VS = +5V At RF = 0Ω, G = +1V/V, and RL = 100Ω, unless otherwise noted. OPA2890ID, IDGS TYP PARAMETER MIN/MAX OVER TEMPERATURE +25°C (2) 0°C to +70°C (3) –40°C to +85°C (3) 90 55 45 40 G = +10V/V, VO = 100mVPP 12 8 6.
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OPA2890 SBOS364C – DECEMBER 2007 – REVISED DECEMBER 2009 www.ti.com ELECTRICAL CHARACTERISTICS: VS = +5V (continued) At RF = 0Ω, G = +1V/V, and RL = 100Ω, unless otherwise noted.
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OPA2890 www.ti.com SBOS364C – DECEMBER 2007 – REVISED DECEMBER 2009 TYPICAL CHARACTERISTICS: VS = ±5V At TA = +25°C, G = +2V/V, RF = 750Ω, and RL = 200Ω, unless otherwise noted. See Figure 49. SMALL-SIGNAL FREQUENCY RESPONSE LARGE-SIGNAL FREQUENCY RESPONSE 9 3 G = +1V/V R F = 0W 2VPP 6 -3 3 G = +10V/V Gain (dB) Normalized Gain (dB) 0 -6 -9 7VPP -3 G = +5V/V -12 G = +2V/V -15 -6 VO = 0.5VPP RL = 200W G = +2V/V -9 -18 1 10 100 1 600 10 Frequency (MHz) 400 Figure 2.
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OPA2890 SBOS364C – DECEMBER 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. See Figure 49.
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OPA2890 www.ti.com SBOS364C – DECEMBER 2007 – REVISED DECEMBER 2009 TYPICAL CHARACTERISTICS: VS = ±5V (continued) At TA = +25°C, G = +2V/V, RF = 750Ω, and RL = 200Ω, unless otherwise noted. See Figure 49. LOW-FREQUENCY INVERTING HARMONIC DISTORTION TWO-TONE, 3RD-ORDER INTERMODULATION SPURIOUS -30 VO = 2VPP RL = 500W G = -1V/V -95 Load power at matched 50W load.
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OPA2890 SBOS364C – DECEMBER 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. See Figure 49. SUPPLY AND OUTPUT CURRENT vs TEMPERATURE TYPICAL DC DRIFT OVER TEMPERATURE 150 2.36 Sinking Output Current 43.5 2.32 Output Current (mA) Sourcing Output Current 42.5 2.24 42.0 2.20 Quiescent Supply Current 41.5 2.16 41.0 2.12 40.5 2.08 40.0 -20 0 20 40 60 80 100 100 0 50 0 -0.
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OPA2890 www.ti.com SBOS364C – DECEMBER 2007 – REVISED DECEMBER 2009 TYPICAL CHARACTERISTICS: VS = ±5V (continued) At TA = +25°C, G = +2V/V, RF = 750Ω, and RL = 200Ω, unless otherwise noted. See Figure 49. DISABLE FEEDTHROUGH -70 VDIS = 0 Disable Feedthrough (dB) -75 -80 -85 -90 -95 -100 -105 -110 -115 -120 1 10 100 Frequency (MHz) Figure 25.
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OPA2890 SBOS364C – DECEMBER 2007 – REVISED DECEMBER 2009 www.ti.com TYPICAL CHARACTERISTICS: VS = ±5V, Differential At TA = +25°C, Differential Gain = +2V/V, and RL = 400Ω, unless otherwise noted. See Figure 52.
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OPA2890 www.ti.com SBOS364C – DECEMBER 2007 – REVISED DECEMBER 2009 TYPICAL CHARACTERISTICS: VS = +5V At TA = +25°C, G = +2V/V, RF = 750Ω, and RL = 200Ω, unless otherwise noted. See Figure 49.
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OPA2890 SBOS364C – DECEMBER 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. See Figure 49. 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 -70 Harmonic Distortion (dBc) 4.5 Input Voltage (1V/div) Output Voltage (1V/div) NONINVERTING OVERDRIVE RECOVERY 6.5 0.5 -1.
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OPA2890 www.ti.com SBOS364C – DECEMBER 2007 – REVISED DECEMBER 2009 TYPICAL CHARACTERISTICS: VS = +5V, Differential At TA = +25°C, Differential Gain = +2V/V, and RL = 400Ω, unless otherwise noted. See Figure 58.
PAGE 16
OPA2890 SBOS364C – DECEMBER 2007 – REVISED DECEMBER 2009 www.ti.com APPLICATIONS INFORMATION WIDEBAND VOLTAGE-FEEDBACK OPERATION +5V +VS 0.1mF The OPA2890 provides an exceptional combination of high output power capability in a dual, wideband, unity-gain stable, voltage-feedback op amp using a new high slew rate input stage.
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OPA2890 www.ti.com SBOS364C – DECEMBER 2007 – REVISED DECEMBER 2009 +5V +VS +5V GD = 0.1mF + 1/2 OPA2830 6.8mF 698W 0.1mF 50W 698W 59W RG RF RG RF DIS VIN VD VI RF RG 1/2 OPA2890 VO 200W RL VOUT VS/2 RF 750W 1/2 OPA2830 RG 750W -5V 0.1mF Figure 51. Differential Inverting Specification and Test Circuit Figure 50.
PAGE 18
OPA2890 SBOS364C – DECEMBER 2007 – REVISED DECEMBER 2009 www.ti.com HIGH-PERFORMANCE DAC TRANSIMPEDANCE AMPLIFIER WIDEBAND VIDEO MULTIPLEXING One common application for video speed amplifiers that include a disable pin is to wire multiple amplifier outputs together, then select one of several possible video inputs to source onto a single line. This simple wired-OR video multiplexer can be easily implemented using the OP2890IDGS (MSOP-10 package only), as shown in Figure 54.
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OPA2890 www.ti.com SBOS364C – DECEMBER 2007 – REVISED DECEMBER 2009 Typically, channel switching is performed either on sync or retrace time in the video signal. The two inputs are approximately equal at this point. The make-before-break disable characteristic of the OPA2890 ensures that there is always one amplifier controlling the line when using a wired-OR circuit such as that shown in Figure 54.
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OPA2890 SBOS364C – DECEMBER 2007 – REVISED DECEMBER 2009 www.ti.com DIFFERENTIAL RECEIVER/DRIVER A very versatile application for a dual operational amplifier is the differential amplifier configuration shown in Figure 56. With both amplifiers of the OPA2890 connected for noninverting operation, the circuit provides a high input impedance, while the gain can easily be set by just one resistor, RG.
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OPA2890 www.ti.com SBOS364C – DECEMBER 2007 – REVISED DECEMBER 2009 +12V 6kW 50W VCM 1/2 OPA2890 1000pF 6kW C1A 128.7pF R3A 232W R1A 402W R2A 402W C2 257.4pF VIN R1B 402W R2B 402W R3B 232W 50W VOUT C1B 128.7pF 1/2 OPA2890 VCM Figure 58.
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OPA2890 SBOS364C – DECEMBER 2007 – REVISED DECEMBER 2009 www.ti.com OPERATING RECOMMENDATIONS OPTIMIZING RESISTOR VALUES Because the OPA2890 is a unity-gain stable, voltage-feedback op amp, a wide range of resistor values may 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.
PAGE 23
OPA2890 www.ti.com SBOS364C – DECEMBER 2007 – REVISED DECEMBER 2009 discussed in the previous section. The amplifier output, however, now sees the 100Ω feedback resistor in parallel with the external load. In general, the feedback resistor should be limited to the 200Ω to 1.5kΩ range. In this case, it is preferable to increase both the RF and RG values (see Figure 56), and then achieve the input matching impedance with a third resistor (RM) to ground.
PAGE 24
OPA2890 SBOS364C – DECEMBER 2007 – REVISED DECEMBER 2009 signal reaches very high frequency or power levels, the 2nd harmonic dominates the distortion with a negligible 3rd harmonic component. Focusing then on the 2nd harmonic, increasing the load impedance improves distortion directly. Remember that the total load includes the feedback network; in the noninverting configuration (see Figure 49), this value is the sum of RF + RG, while in the inverting configuration it is only RF.
PAGE 25
OPA2890 www.ti.com SBOS364C – DECEMBER 2007 – REVISED DECEMBER 2009 DC ACCURACY AND OFFSET CONTROL The balanced input stage of a wideband voltage-feedback op amp allows good output dc accuracy in a wide variety of applications. The power-supply current trim for the OPA2890 gives even tighter control than comparable amplifiers.
PAGE 26
OPA2890 SBOS364C – DECEMBER 2007 – REVISED DECEMBER 2009 In normal operation, base current to Q1 is provided through the 2MΩ resistor, while the emitter current through the 50kΩ resistor sets up a voltage drop that is inadequate to turn on the two diodes in the Q1 emitter. As V DIS is pulled LOW, additional current is pulled through the 50kΩ resistor, eventually turning on those two diodes ( 30μA).
PAGE 27
OPA2890 www.ti.com SBOS364C – DECEMBER 2007 – REVISED DECEMBER 2009 BOARD LAYOUT GUIDELINES Achieving optimum performance with a high-frequency amplifier such as the OPA2890 requires careful attention to board layout parasitics and external component types. Recommendations that optimize performance include: a) Minimize parasitic capacitance to any ac ground for all of the signal I/O pins.
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OPA2890 SBOS364C – DECEMBER 2007 – REVISED DECEMBER 2009 www.ti.com INPUT AND ESD PROTECTION +VCC The OPA2890 is built using a very high-speed complementary bipolar process. The internal junction breakdown voltages are relatively low for these very small geometry devices. These breakdowns are reflected in the Absolute Maximum Ratings table. All device pins are protected with internal ESD protection diodes to the power supplies, as shown in Figure 63.
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OPA2890 www.ti.com SBOS364C – DECEMBER 2007 – REVISED DECEMBER 2009 REVISION HISTORY NOTE: Page numbers for previous revisions may differ from page numbers in the current version. Changes from Revision B (May 2008) to Revision C Page • Changed min/max over temperature specifications for the Input, Common-mode input range (CMIR) parameter of the ±5V electrical characteristics table ...........................................................................................................................
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE OPTION ADDENDUM www.ti.com (4) 18-Oct-2013 There may be additional marking, which relates to the logo, the lot trace code information, or the environmental category on the device. (5) Multiple Device Markings will be inside parentheses. Only one Device 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 Device Marking for that device.
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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 OPA2890IDGSR VSSOP DGS 10 OPA2890IDGST VSSOP DGS OPA2890IDR SOIC D SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant 2500 330.0 12.4 5.3 3.4 1.4 8.0 12.0 Q1 10 250 180.0 12.4 5.3 3.4 1.4 8.0 12.0 Q1 8 2500 330.0 12.4 6.4 5.2 2.1 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) OPA2890IDGSR VSSOP DGS 10 2500 367.0 367.0 35.0 OPA2890IDGST VSSOP DGS 10 250 210.0 185.0 35.0 OPA2890IDR 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.