Datasheet

ManualsBrandsTEXAS INSTRUMENTS ManualsLinear ICsLinear IC - Op-amp Voltage feedback SOIC 8

20W

20pF

10 Fm

0.1 Fm

THS1040

10-Bit

40MSPS

AIN+

AIN-

V =1V

REF

OPA690

+5V

0.1 Fm

2.5V

3.3V

OPA690

www.ti.com

SBOS223F –DECEMBER 2001–REVISED FEBRUARY 2010

Wideband, Voltage-Feedback

OPERATIONAL AMPLIFIER with Disable

Check for Samples: OPA690

FEATURES

DESCRIPTION

• FLEXIBLE SUPPLY RANGE:

The OPA690 represents a major step forward in

+5V to +12V Single Supply

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

±2.5V to ±5V Dual Supply

internal architecture provides slew rate and full-power

bandwidth previously found only in wideband,

• UNITY-GAIN STABLE: 500MHz (G = 1)

current-feedback op amps. A new output stage

• HIGH OUTPUT CURRENT: 190mA

architecture delivers high currents with a minimal

• OUTPUT VOLTAGE SWING: ±4.0V

headroom requirement. These combine to give

exceptional single-supply operation. Using a single

• HIGH SLEW RATE: 1800V/µs

+5V supply, the OPA690 can deliver a 1V to 4V

• LOW SUPPLY CURRENT: 5.5mA

output swing with over 150mA drive current and

• LOW DISABLE CURRENT: 100µA

150MHz bandwidth. This combination of features

makes the OPA690 an ideal RGB line driver or

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

single-supply Analog-to-Digital Converter (ADC) input

driver.

APPLICATIONS

• VIDEO LINE DRIVING

The low 5.5mA supply current of the OPA690 is

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

• xDSL LINE DRIVER/RECEIVER

temperature drift, gives lower maximum supply

• HIGH-SPEED IMAGING CHANNELS

current than competing products. System power may

• ADC BUFFERS

be reduced further using the optional disable control

• PORTABLE INSTRUMENTS

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

will operate the OPA690 normally. If pulled LOW, the

• TRANSIMPEDANCE AMPLIFIERS

OPA690 supply current drops to less than 100mA

• ACTIVE FILTERS

while the output goes to a high-impedance state. This

feature may be used for power savings.

OPA690 RELATED PRODUCTS

SINGLES DUALS TRIPLES

Voltage-Feedback — OPA2690 OPA3690

Current-Feedback OPA691 OPA2691 OPA3691

Fixed Gain OPA692 — OPA3692

Single-Supply ADC Driver

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)

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OPA690 www.ti.com SBOS223F – DECEMBER 2001 – REVISED FEBRUARY 2010 Wideband, Voltage-Feedback OPERATIONAL AMPLIFIER with Disable Check for Samples: OPA690 FEATURES DESCRIPTION • The OPA690 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.
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OPA690 SBOS223F – DECEMBER 2001 – REVISED FEBRUARY 2010 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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OPA690 www.ti.com SBOS223F – DECEMBER 2001 – REVISED FEBRUARY 2010 ELECTRICAL CHARACTERISTICS: VS = ±5V Boldface limits are tested at +25°C. At RF = 402Ω, RL = 100Ω, and G = +2 (see Figure 36 for ac performance only), unless otherwise noted. OPA690ID, IDBV MIN/MAX OVER TEMPERATURE TYP PARAMETER +25°C (2) 0°C to +70°C (3) -40°C to +85°C (3) 220 165 160 150 G = +10, VO = 0.5VPP 30 20 19 G ≥ 10 300 200 190 G = +2, VO < 0.5VPP 30 TEST CONDITIONS +25°C G = +1, VO = 0.
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OPA690 SBOS223F – DECEMBER 2001 – REVISED FEBRUARY 2010 www.ti.com ELECTRICAL CHARACTERISTICS: VS = ±5V (continued) Boldface limits are tested at +25°C. At RF = 402Ω, RL = 100Ω, and G = +2 (see Figure 36 for ac performance only), unless otherwise noted. OPA690ID, IDBV MIN/MAX OVER TEMPERATURE TYP PARAMETER TEST CONDITIONS +25°C +25°C (2) 0°C to +70°C (3) -40°C to +85°C (3) UNIT MIN/ MAX TEST LEVELS (1) OUTPUT Voltage Output Swing No Load ±4.0 ±3.8 ±3.7 ±3.6 V min A RL = 100Ω ±3.9 ±3.
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OPA690 www.ti.com SBOS223F – DECEMBER 2001 – REVISED FEBRUARY 2010 ELECTRICAL CHARACTERISTICS: VS = +5V Boldface limits are tested at +25°C. At RF = 402Ω, RL = 100Ω, and G = +2 (see Figure 37 for ac performance only), unless otherwise noted. OPA690ID, IDBV MIN/MAX OVER TEMPERATURE TYP PARAMETER +25°C (2) 0°C to +70°C (3) -40°C to +85°C (3) 190 150 145 140 G = +10, VO < 0.5VPP 25 18 17 G ≥ 10 250 180 170 G = +2, VO < 0.5VPP 20 TEST CONDITIONS +25°C G = +1, VO = 0.
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OPA690 SBOS223F – DECEMBER 2001 – REVISED FEBRUARY 2010 www.ti.com ELECTRICAL CHARACTERISTICS: VS = +5V (continued) Boldface limits are tested at +25°C. At RF = 402Ω, RL = 100Ω, and G = +2 (see Figure 37 for ac performance only), unless otherwise noted. OPA690ID, IDBV MIN/MAX OVER TEMPERATURE TYP PARAMETER TEST CONDITIONS +25°C +25°C (2) 0°C to +70°C (3) -40°C to +85°C (3) UNIT MIN/ MAX TEST LEVELS (1) OUTPUT Most Positive Output Voltage No Load 4 3.8 3.6 3.5 V min A RL = 100Ω to 2.
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OPA690 www.ti.com SBOS223F – DECEMBER 2001 – REVISED FEBRUARY 2010 TYPICAL CHARACTERISTICS: VS = ±5V At TA = +25°C, G = +2, RF = 402Ω, and RL = 100Ω (see Figure 36 for ac performance only), unless otherwise noted. SMALL−SIGNAL FREQUENCY RESPONSE 9 6 VO = 0.5VPP G = +1 RF = 25W 3 6 0 G=5 -3 -6 VO = 2VPP Gain (3dB/div) Normalized Gain (dB) LARGE−SIGNAL FREQUENCY RESPONSE G=2 G = 10 3 VO = 1VPP 0 VO = 4VPP -9 -3 -12 VO = 7VPP -6 0.5 -15 0.
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OPA690 SBOS223F – DECEMBER 2001 – REVISED FEBRUARY 2010 www.ti.com TYPICAL CHARACTERISTICS: VS = ±5V (continued) At TA = +25°C, G = +2, RF = 402Ω, and RL = 100Ω (see Figure 36 for ac performance only), unless otherwise noted.
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OPA690 www.ti.com SBOS223F – DECEMBER 2001 – REVISED FEBRUARY 2010 TYPICAL CHARACTERISTICS: VS = ±5V (continued) At TA = +25°C, G = +2, RF = 402Ω, and RL = 100Ω (see Figure 36 for ac performance only), unless otherwise noted. INPUT VOLTAGE AND CURRENT NOISE DENSITY TWO−TONE, 3RD−ORDER INTERMODULATION SPURIOUS -30 -35 3rd-Order Spurious Level (dBc) Voltage Noise (nV/ÖHz) Current Noise (pA/ÖHz) 100 10 Voltage Noise 5.5nV/ÖHz Current Noise 3.
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OPA690 SBOS223F – DECEMBER 2001 – REVISED FEBRUARY 2010 www.ti.com TYPICAL CHARACTERISTICS: VS = ±5V (continued) At TA = +25°C, G = +2, RF = 402Ω, and RL = 100Ω (see Figure 36 for ac performance only), unless otherwise noted. OUTPUT VOLTAGE AND CURRENT LIMITATIONS 1 0 25W Load Line 50W Load Line -1 -2 100W Load Line -3 -200 0 -100 100 200 10 Input Offset Current (IOS) 0 0 -0.5 -10 -1.0 Input Offset Voltage (VOS) -1.5 -20 -2.0 -50 300 0 -25 25 50 100 Figure 19. Figure 20.
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OPA690 www.ti.com SBOS223F – DECEMBER 2001 – REVISED FEBRUARY 2010 TYPICAL CHARACTERISTICS: VS = ±5V (continued) At TA = +25°C, G = +2, RF = 402Ω, and RL = 100Ω (see Figure 36 for ac performance only), unless otherwise noted. 5 10 4 8 3 6 2 4 1 Output Voltage 2 0 0 -1 -2 -2 -4 -3 -4 Input Voltage -5 Output Voltage (V) Input Voltage (V) NONINVERTING OVERDRIVE RECOVERY -6 -8 -10 Time (10ns/div) Figure 25.
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OPA690 SBOS223F – DECEMBER 2001 – REVISED FEBRUARY 2010 www.ti.com TYPICAL CHARACTERISTICS: +5V At TA = +25°C, G = +2, RF = 402Ω, and RL = 100Ω (see Figure 37 for ac performance only), unless otherwise noted. SMALL−SIGNAL FREQUENCY RESPONSE 6 LARGE−SIGNAL FREQUENCY RESPONSE 9 VO = 0.5VPP 3 6 VO = 3VPP G = +2 0 3 G = +5 Gain (dB) Normalized Gain (dB) VO = 2VPP G = +1 RF = 25W -3 VO = 1VPP 0 G = +10 -6 -3 -9 -6 0.7 1 100 10 700 0.5 1 Figure 26. Figure 27.
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OPA690 www.ti.com SBOS223F – DECEMBER 2001 – REVISED FEBRUARY 2010 TYPICAL CHARACTERISTICS: +5V (continued) At TA = +25°C, G = +2, RF = 402Ω, and RL = 100Ω (see Figure 37 for ac performance only), unless otherwise noted. HARMONIC DISTORTION vs LOAD RESISTANCE HARMONIC DISTORTION vs FREQUENCY -40 -60 Harmonic Distortion (dBc) Harmonic Distortion (dBc) VO = 2VPP f = 5MHz -65 -70 2nd-Harmonic 3rd-Harmonic -75 -50 VO = 2VPP RL = 100W to 2.
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OPA690 SBOS223F – DECEMBER 2001 – REVISED FEBRUARY 2010 www.ti.com APPLICATION INFORMATION WIDEBAND VOLTAGE-FEEDBACK OPERATION The OPA690 provides an exceptional combination of high output power capability 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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OPA690 www.ti.com SBOS223F – DECEMBER 2001 – REVISED FEBRUARY 2010 Again, an additional resistor (50Ω in this case) is included directly in series with the noninverting input. This minimum recommended value provides part of the dc source resistance matching for the noninverting input bias current. It is also used to form a simple parasitic pole to roll off the frequency response at very high frequencies ( > 500MHz) using the input parasitic capacitance to form a bandlimiting pole.
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OPA690 SBOS223F – DECEMBER 2001 – REVISED FEBRUARY 2010 www.ti.com HIGH-PERFORMANCE DAC TRANSIMPEDANCE AMPLIFIER The 5pF capacitor in the feedback loop provides added bandwidth control for the signal path. High-frequency, direct digital synthesis (DDS) Digital-to-Analog Converters (DACs) require a low distortion output amplifier to retain their SFDR performance into real-world loads. See Figure 40 for a single-ended output drive implementation.
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OPA690 www.ti.com SBOS223F – DECEMBER 2001 – REVISED FEBRUARY 2010 SINGLE-SUPPLY ACTIVE FILTERS The high bandwidth provided by the OPA690, 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 42 for an example design of a 5MHz low-pass Butterworth filter using the Sallen-Key topology.
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OPA690 SBOS223F – DECEMBER 2001 – REVISED FEBRUARY 2010 www.ti.com DESIGN-IN TOOLS DEMONSTRATION FIXTURES Two printed circuit boards (PCBs) are available to assist in the initial evaluation of circuit performance using the OPA690 in its two package options. Both of these are offered free of charge as unpopulated PCBs, delivered with a user’s guide. The summary information for these fixtures is shown in Table 1. Table 1.
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OPA690 www.ti.com SBOS223F – DECEMBER 2001 – REVISED FEBRUARY 2010 OPERATING SUGGESTIONS OPTIMIZING RESISTOR VALUES Since the OPA690 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.
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OPA690 SBOS223F – DECEMBER 2001 – REVISED FEBRUARY 2010 www.ti.com INVERTING AMPLIFIER OPERATION Since the OPA690 is a general-purpose, wideband voltage-feedback op amp, all of the familiar op amp application circuits are available to the designer. Inverting operation is one of the more common requirements and offers several performance benefits. Figure 43 shows a typical inverting configuration where the I/O impedances and signal gain from Figure 36 are retained in an inverting circuit configuration.
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OPA690 www.ti.com SBOS223F – DECEMBER 2001 – REVISED FEBRUARY 2010 OUTPUT CURRENT AND VOLTAGE The OPA690 provides output voltage and current capabilities that are unsurpassed in a low-cost monolithic op amp. Under no-load conditions at +25°C, the output voltage typically swings closer than 1V to either supply rail; the specified swing limit is within 1.2V of either rail. Into a 15Ω load (the minimum tested load), it will deliver more than ±160mA.
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OPA690 SBOS223F – DECEMBER 2001 – REVISED FEBRUARY 2010 www.ti.com This gain of +2 circuit includes a noise gain tuning resistor across the two inputs to increase the noise gain, increasing the unloaded phase margin for the op amp. Although this technique will reduce the required RS resistor for a given capacitive load, it does increase the noise at the output. It also will decrease the loop gain, slightly decreasing the distortion performance.
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OPA690 www.ti.com SBOS223F – DECEMBER 2001 – REVISED FEBRUARY 2010 The total output spot noise voltage can be computed as the square root of the sum of all squared output noise voltage contributors. Equation 3 shows the general form for the output noise voltage using the terms shown in Figure 46.
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OPA690 SBOS223F – DECEMBER 2001 – REVISED FEBRUARY 2010 DISABLE OPERATION The OPA690 provides an optional disable feature that may be used either to reduce system power or to implement a simple channel multiplexing operation. If the DIS control pin is left unconnected, the OPA690 will operate normally. To disable, the control pin must be asserted LOW. Figure 48 shows a simplified internal circuit for the disable control feature. +VS IS Control -VS Figure 48.
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OPA690 www.ti.com SBOS223F – DECEMBER 2001 – REVISED FEBRUARY 2010 THERMAL ANALYSIS Due to the high output power capability of the OPA690, heatsinking or forced airflow may be required under extreme operating conditions. Maximum desired junction temperature will set the maximum allowed internal power dissipation as described below. In no case should the maximum junction temperature be allowed to exceed 175°C. Operating junction temperature (TJ) is given by TA + PD × qJA.
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OPA690 SBOS223F – DECEMBER 2001 – REVISED FEBRUARY 2010 www.ti.com BOARD LAYOUT GUIDELINES Achieving optimum performance with a high-frequency amplifier like the OPA690 requires careful attention to board layout parasitics and external component types. Recommendations that will optimize performance include: a. Minimize parasitic capacitance to any ac ground for all of the signal I/O pins.
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OPA690 www.ti.com SBOS223F – DECEMBER 2001 – REVISED FEBRUARY 2010 destination devices to be handled as separate transmission lines, each with their own series and shunt terminations. If the 6dB attenuation of a doubly-terminated transmission line is unacceptable, a long trace can be series-terminated at the source end only.
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OPA690 SBOS223F – DECEMBER 2001 – REVISED FEBRUARY 2010 www.ti.com REVISION HISTORY NOTE: Page numbers for previous revisions may differ from page numbers in the current version. Changes from Revision E (November 2008) to Revision F Page • Changed data sheet format to current standards ................................................................................................................. 1 • Deleted Lead Temperature specification from Absolute Maximum Ratings table .........................
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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) OPA690IDBVR SOT-23 DBV 6 3000 180.0 OPA690IDBVT SOT-23 DBV 6 250 OPA690IDR 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) OPA690IDBVR SOT-23 DBV 6 3000 210.0 185.0 35.0 OPA690IDBVT SOT-23 DBV 6 250 210.0 185.0 35.0 OPA690IDR 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.