Datasheet

ManualsBrandsTEXAS INSTRUMENTS ManualsLinear ICsLinear IC - Op-amp Current feedback SOT 23 5

OPA694

+5V

402W

75W

LOAD

RG-59

75W

402W

-5V

OPA694

www.ti.com

SBOS319G –SEPTEMBER 2004–REVISED JANUARY 2010

Wideband, Low-Power, Current Feedback

Operational Amplifier

Check for Samples: OPA694

FEATURES

DESCRIPTION

• UNITY GAIN STABLE BANDWIDTH: 1.5GHz

• HIGH GAIN OF 2V/V BANDWIDTH: 690MHz

The OPA694 is an ultra-wideband, low-power, current

feedback operational amplifier featuring high slew

• LOW SUPPLY CURRENT: 5.8mA

rate and low differential gain/phase errors. An

• HIGH SLEW RATE: 1700V/msec

improved output stage provides ±80mA output drive

• HIGH FULL-POWER BANDWIDTH: 675MHz

with < 1.5V output voltage headroom. Low supply

current with > 500MHz bandwidth meets the

• LOW DIFFERENTIAL GAIN/PHASE:

requirements of high-density video routers. Being a

0.03%/0.015°

current feedback design, the OPA694 holds its

• Pb-FREE AND GREEN SOT23-5 PACKAGE

bandwidth to very high gains—at a gain of 10, the

OPA694 will still provide 200MHz bandwidth.

APPLICATIONS

RF applications can use the OPA694 as a low-power

• WIDEBAND VIDEO LINE DRIVER

SAW pre-amplifier. Extremely high 3rd-order intercept

• MATRIX SWITCH BUFFER

is provided through 70MHz at much lower quiescent

• DIFFERENTIAL RECEIVER

power than many typical RF amplifiers.

• ADC DRIVER

The OPA694 is available in an industry-standard

• IMPROVED REPLACEMENT FOR OPA658

pinout in both SO-8 and SOT23-5 packages.

OPA694 RELATED PRODUCTS

SINGLES DUALS TRIPLES QUADS FEATURES

— OPA2694 — — Dual Version

Low-Power,

OPA683 OPA2683 — —

CFBPlus

Low-Power,

OPA684 OPA2684 OPA3684 OPA4684

CFBPlus

OPA691 OPA2691 OPA3691 — High Output

OPA695 OPA2695 OPA3695 — High Intercept

Gain 2V/V Video Line 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 (28 pages)

PAGE 1
OP A6 94 OP A6 94 OPA694 www.ti.com SBOS319G – SEPTEMBER 2004 – REVISED JANUARY 2010 Wideband, Low-Power, Current Feedback Operational Amplifier Check for Samples: OPA694 FEATURES 1 • • • • • • 2 • UNITY GAIN STABLE BANDWIDTH: 1.5GHz HIGH GAIN OF 2V/V BANDWIDTH: 690MHz LOW SUPPLY CURRENT: 5.8mA HIGH SLEW RATE: 1700V/msec HIGH FULL-POWER BANDWIDTH: 675MHz LOW DIFFERENTIAL GAIN/PHASE: 0.03%/0.
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OPA694 SBOS319G – SEPTEMBER 2004 – REVISED JANUARY 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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OPA694 www.ti.com SBOS319G – SEPTEMBER 2004 – REVISED JANUARY 2010 ELECTRICAL CHARACTERISTICS: VS = ±5V Boldface limits are tested at +25°C. At RF = 402Ω, RL = 100Ω, and G = +2V/V, unless otherwise noted. OPA694ID, IDBV MIN/MAX OVER TEMPERATURE TYP 0°C to +70°C ( PARAMETER +25°C (2) 3) TEST CONDITIONS +25°C G = +1, VO = 0.5VPP, RF = 430Ω 1500 G = +2, VO = 0.5VPP, RF = 402Ω 690 350 340 G = +5, VO = 0.5VPP, RF = 318Ω 250 200 180 G = +10, VO = 0.
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OPA694 SBOS319G – SEPTEMBER 2004 – REVISED JANUARY 2010 www.ti.com ELECTRICAL CHARACTERISTICS: VS = ±5V (continued) Boldface limits are tested at +25°C. At RF = 402Ω, RL = 100Ω, and G = +2V/V, unless otherwise noted. OPA694ID, IDBV MIN/MAX OVER TEMPERATURE TYP 0°C to +70°C ( PARAMETER TEST CONDITIONS +25°C +25°C (2) 3) -40°C to +85°C (3) UNIT MIN/ MAX TEST LEVELS (1) OUTPUT Voltage Output Voltage No Load ±4 ±3.8 ±3.7 ±3.6 V min A RL = 100Ω ±3.4 ±3.1 ±3.1 ±3.
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OPA694 www.ti.com SBOS319G – SEPTEMBER 2004 – REVISED JANUARY 2010 TYPICAL CHARACTERISTICS: VS = ±5V At RF = 402Ω, RL = 100Ω, and G = +2V/V, unless otherwise noted. NONINVERTING SMALL−SIGNAL FREQUENCY RESPONSE INVERTING SMALL−SIGNAL FREQUENCY RESPONSE 3 3 -3 -6 G = +10V/V RF = 178W G = +5V/V RF = 318W -9 G = -5V/V RF = 318W 0 Normalized Gain (dB) G = +2V/V RF = 402W 0 Normalized Gain (dB) VO = 0.
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OPA694 SBOS319G – SEPTEMBER 2004 – REVISED JANUARY 2010 www.ti.com TYPICAL CHARACTERISTICS: VS = ±5V (continued) At RF = 402Ω, RL = 100Ω, and G = +2V/V, unless otherwise noted.
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OPA694 www.ti.com SBOS319G – SEPTEMBER 2004 – REVISED JANUARY 2010 TYPICAL CHARACTERISTICS: VS = ±5V (continued) At RF = 402Ω, RL = 100Ω, and G = +2V/V, unless otherwise noted. TWO−TONE, THIRD−ORDER INTERMODULATION INTERCEPT INPUT VOLTAGE AND CURRENT NOISE 55 1k 50W PI Intercept Point (+dBm) Voltage Noise (nV/ÖHz) Current Noise (pA/ÖHz) 50 Noninverting Current Noise (24pA/ÖHz) 100 Inverting Current Noise (22pA/ÖHz) 10 PO OPA694 50W 50W 402W 45 402W 40 35 30 Voltage Noise (2.
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OPA694 SBOS319G – SEPTEMBER 2004 – REVISED JANUARY 2010 www.ti.com TYPICAL CHARACTERISTICS: VS = ±5V (continued) At RF = 402Ω, RL = 100Ω, and G = +2V/V, unless otherwise noted. VIDEO DIFFERENTIAL GAIN/DIFFERENTIAL PHASE (No Pulldown) 0.08 TYPICAL DC DRIFT OVER TEMPERATURE 0.08 dG Negative Video 0.02 0.04 Input Offset Voltage (mV) Differential Gain (%) 0.04 Differential Phase (°) 0.12 dG Positive Video Input Offset Voltage (VOS) Left Scale 0.
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OPA694 www.ti.com SBOS319G – SEPTEMBER 2004 – REVISED JANUARY 2010 TYPICAL CHARACTERISTICS: VS = ±5V (continued) At RF = 402Ω, RL = 100Ω, and G = +2V/V, unless otherwise noted.
PAGE 10
OPA694 SBOS319G – SEPTEMBER 2004 – REVISED JANUARY 2010 www.ti.com APPLICATION INFORMATION WIDEBAND CURRENT FEEDBACK OPERATION The OPA694 provides exceptional AC performance for a wideband, low-power, current-feedback operational amplifier. Requiring only 5.8mA quiescent current, the OPA694 offers a 690MHz bandwidth at a gain of +2, along with a 1700V/ms slew rate. An improved output stage provides ±80mA output drive, along with < 1.5V output voltage headroom.
PAGE 11
OPA694 www.ti.com SBOS319G – SEPTEMBER 2004 – REVISED JANUARY 2010 Two OPA694s are used in the circuit of Figure 33 to form a differential driver for a 12-bit ADC. The two OPA694s offer > 250MHz bandwidth at a differential gain of 5V/V, with a 2VPP output swing. A 2nd-order RLC filter is used in order to limit the noise from the amplifier and provide some attenuation for higher-frequency harmonic distortion. have been adjusted to maintain both maximum bandwidth and input impedance matching.
PAGE 12
OPA694 SBOS319G – SEPTEMBER 2004 – REVISED JANUARY 2010 www.ti.com SAW FILTER BUFFER One common requirement in an IF strip is to buffer the output of a mixer with enough gain to recover the insertion loss of a narrowband SAW filter. Figure 35 shows one possible configuration driving a SAW filter. The Two-Tone, Third-Order Intermodulation Intercept plot (Figure 14) is shown in the Typical Characteristics curves.
PAGE 13
OPA694 www.ti.com SBOS319G – SEPTEMBER 2004 – REVISED JANUARY 2010 The demonstration fixtures can be requested at the Texas Instruments web site (www.ti.com) through the OPA694 product folder. MACROMODELS AND APPLICATIONS SUPPORT Computer simulation of circuit performance using SPICE is often useful when analyzing the performance of analog circuits and systems.
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OPA694 SBOS319G – SEPTEMBER 2004 – REVISED JANUARY 2010 www.ti.com gain reduces to 1 (and the curves intersect). This point of equality is where the amplifier closed-loop frequency response given by Equation 1 starts to roll off, and is exactly analogous to the frequency at which the noise gain equals the open-loop voltage gain for a voltage-feedback op amp.
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OPA694 www.ti.com SBOS319G – SEPTEMBER 2004 – REVISED JANUARY 2010 DRIVING CAPACITIVE LOADS One of the most demanding and yet very common load conditions for an op amp is capacitive loading. Often, the capacitive load is the input of an ADC—including additional external capacitance that may be recommended to improve ADC linearity.
PAGE 16
OPA694 SBOS319G – SEPTEMBER 2004 – REVISED JANUARY 2010 www.ti.com 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 40.
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OPA694 www.ti.com SBOS319G – SEPTEMBER 2004 – REVISED JANUARY 2010 requirement for the circuit in Figure 41. Perfect cancellation over process and temperature is not possible. However, this initial resistor setting and precise gain matching will minimize long-term pulse settling tails. THERMAL ANALYSIS Due to the high output power capability of the OPA694, heatsinking or forced airflow may be required under extreme operating conditions.
PAGE 18
OPA694 SBOS319G – SEPTEMBER 2004 – REVISED JANUARY 2010 www.ti.com resistor used in the Electrical Characteristic tables at a gain of +2 on ±5V supplies is a good starting point for design. Note that a 430Ω feedback resistor, rather than a direct short, is recommended for the unity-gain follower application. A current-feedback op amp requires a feedback resistor even in the unity-gain follower configuration to control stability.
PAGE 19
OPA694 www.ti.com SBOS319G – SEPTEMBER 2004 – REVISED JANUARY 2010 REVISION HISTORY NOTE: Page numbers for previous revisions may differ from page numbers in the current version. Changes from Revision F (August, 2008) to Revision G Page • Updated document format to current standards ................................................................................................................... 1 • Deleted lead temperature specifications 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 14-Jul-2012 TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Pins Type Drawing SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) OPA694IDBVR SOT-23 DBV 5 3000 180.0 OPA694IDBVT SOT-23 DBV 5 250 OPA694IDR 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 14-Jul-2012 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) OPA694IDBVR SOT-23 DBV 5 3000 210.0 185.0 35.0 OPA694IDBVT SOT-23 DBV 5 250 210.0 185.0 35.0 OPA694IDR SOIC D 8 2500 367.0 367.0 35.
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