Datasheet

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

FEATURES

D HIGH BANDWIDTH:

250MHz (G = +1)

110MHz (G = +2)

D LOW SUPPLY CURRENT: 3.9mA (V

= +5V)

D FLEXIBLE SUPPLY RANGE:

±1.4V to ±5.5V Dual Supply

+2.8V to +11V Single Supply

D INPUT RANGE INCLUDES GROUND ON

SINGLE SUPPLY

D 4.88V OUTPUT SWING ON +5V SUPPLY

D HIGH SLEW RATE: 550V/µs

D LOW INPUT VOLTAGE NOISE: 9.2nV/√Hz

D Pb-FREE SOT23 PACKAGE

APPLICATIONS

D SINGLE-SUPPLY ANALOG-TO-DIGITAL

CONVERTER (ADC) INPUT BUFFERS

D SINGLE-SUPPLY VIDEO LINE DRIVERS

D CCD IMAGING CHANNELS

D LOW-POWER ULTRASOUND

D PLL INTEGRATORS

D PORTABLE CONSUMER ELECTRONICS

OPA830

750Ω562Ω

2.26k

Ω

374Ω

22pF

+3V

100

Ω

+3V

THS1040

10−Bit

40MSPS

DC-Coupled, +3V ADC Driver

DESCRIPTION

The OPA830 is a low-power, single-supply, wideband,

voltage-feedback amplifier designed to operate on a single

+3V or +5V supply. Operation on ±5V or +10V supplies is also

supported. The input range extends below the negative

supply and to within 1.7V of the positive supply. Using

complementary common-emitter outputs provides an output

swing to within 25mV of either supply while driving 150Ω. High

output drive current (±80mA) and low differential gain and

phase errors also make them ideal for single-supply

consumer video products.

Low distortion operation is ensured by the high gain

bandwidth product (110MHz) and slew rate (550V/µs), making

the OPA830 an ideal input buffer stage to 3V and 5V CMOS

ADCs. Unlike other low-power, single-supply amplifiers,

distortion performance improves as the signal swing is

decreased. A low 9.2nV/√Hz

input voltage noise supports

wide dynamic range operation.

The OPA830 is available in an industry-standard SO-8

package. The OPA830 is also available in an ultra-small

SOT23-5 package. For fixed-gain line driver applications,

consider the OPA832.

Summary of content (37 pages)

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OPA830 SBOS263F − AUGUST 2004 − REVISED AUGUST 2008 Low-Power, Single-Supply, Wideband Operational Amplifier FEATURES DESCRIPTION D HIGH BANDWIDTH: D D D D D D D 250MHz (G = +1) 110MHz (G = +2) LOW SUPPLY CURRENT: 3.9mA (VS = +5V) FLEXIBLE SUPPLY RANGE: ±1.4V to ±5.5V Dual Supply +2.8V to +11V Single Supply INPUT RANGE INCLUDES GROUND ON SINGLE SUPPLY 4.88V OUTPUT SWING ON +5V SUPPLY HIGH SLEW RATE: 550V/µs LOW INPUT VOLTAGE NOISE: 9.
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"#$ www.ti.com SBOS263F − AUGUST 2004 − REVISED AUGUST 2008 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. ABSOLUTE MAXIMUM RATINGS(1) Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12VDC Internal Power Dissipation . . . . . . . . . . . . . .
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"#$ www.ti.com SBOS263F − AUGUST 2004 − REVISED AUGUST 2008 ELECTRICAL CHARACTERISTICS: VS = ±5V Boldface limits are tested at +25°C. At TA = 25°C, G = +2, RF = 750Ω, and RL = 150Ω to GND, unless otherwise noted (see Figure 3). OPA830ID, IDBV PARAMETER AC PERFORMANCE (see Figure 3) Small-Signal Bandwidth Gain-Bandwidth Product Peaking at a Gain of +1 Slew Rate Rise Time Fall Time Settling Time to 0.
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"#$ www.ti.com SBOS263F − AUGUST 2004 − REVISED AUGUST 2008 ELECTRICAL CHARACTERISTICS: VS = +5V Boldface limits are tested at +25°C. At TA = 25°C, G = +2, RF = 750Ω, and RL = 150Ω to VS/2, unless otherwise noted (see Figure 1). OPA830ID, IDBV PARAMETER AC PERFORMANCE (see Figure 1) Small-Signal Bandwidth Gain-Bandwidth Product Peaking at a Gain of +1 Slew Rate Rise Time Fall Time Settling Time to 0.
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"#$ www.ti.com SBOS263F − AUGUST 2004 − REVISED AUGUST 2008 ELECTRICAL CHARACTERISTICS: VS = +3V Boldface limits are tested at +25°C. At TA = 25°C, G = +2, and RL = 150Ω to VS/3, unless otherwise noted (see Figure 2). OPA830ID, IDBV TYP PARAMETER AC PERFORMANCE (see Figure 2) Small-Signal Bandwidth Gain-Bandwidth Product Slew Rate Rise Time Fall Time Settling Time to 0.
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"#$ www.ti.com SBOS263F − AUGUST 2004 − REVISED AUGUST 2008 TYPICAL CHARACTERISTICS: VS = ±5V At TA = 25°C, G = +2, RF = 750Ω, and RL = 150Ω to GND, unless otherwise noted (see Figure 3). INVERTING SMALL−SIGNAL FREQUENCY RESPONSE NONINVERTING SMALL−SIGNAL FREQUENCY RESPONSE 3 6 0 0 Normalized Gain (dB) Normalized Gain (dB) G = −2 G = +1 RF = 0Ω 3 G = +2 −3 G = +5 −6 −9 G = +10 −12 VO = 0.2VPP RL = 150Ω See Figure 3 −15 −18 1 G = −1 −3 −6 G = −5 −9 G = −10 −12 VO = 0.
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"#$ www.ti.com SBOS263F − AUGUST 2004 − REVISED AUGUST 2008 TYPICAL CHARACTERISTICS: VS = ±5V (continued) At TA = 25°C, G = +2, RF = 750Ω, and RL = 150Ω to GND, unless otherwise noted (see Figure 3). 5MHz HARMONIC DISTORTION vs SUPPLY VOLTAGE HARMONIC DISTORTION vs LOAD RESISTANCE −40 −60 3rd−Harmonic −65 −70 2nd−Harmonic −75 −80 −50 −55 Input Limited for VCM = 0V −60 −65 2nd−Harmonic −70 −75 −80 3rd−Harmonic −85 −85 100 −90 2.0 1000 2.5 3.
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"#$ www.ti.com SBOS263F − AUGUST 2004 − REVISED AUGUST 2008 TYPICAL CHARACTERISTICS: VS = ±5V (continued) At TA = 25°C, G = +2, RF = 750Ω, and RL = 150Ω to GND, unless otherwise noted (see Figure 3).
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"#$ www.ti.com SBOS263F − AUGUST 2004 − REVISED AUGUST 2008 TYPICAL CHARACTERISTICS: VS = ±5V, Differential Configuration At TA = 25°C, GD = +2, RF = 604Ω, and RL = 500Ω, unless otherwise noted.
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"#$ www.ti.com SBOS263F − AUGUST 2004 − REVISED AUGUST 2008 TYPICAL CHARACTERISTICS: VS = +5V At TA = 25°C, G = +2, RF = 750Ω, RL = 150Ω to VS/2, and input VCM = 2.5V, unless otherwise noted (see Figure 1). INVERTING SMALL−SIGNAL FREQUENCY RESPONSE NONINVERTING SMALL−SIGNAL FREQUENCY RESPONSE 3 6 G = +1 RF = 0Ω G = −2 0 Normalized Gain (dB) 0 G = +2 −3 G = +5 −6 −9 G = +10 −12 VO = 0.2VPP RL = 150Ω See Figure 1 −15 −18 1 G = −1 −3 −6 G = −5 −9 G = −10 −12 VO = 0.
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"#$ www.ti.com SBOS263F − AUGUST 2004 − REVISED AUGUST 2008 TYPICAL CHARACTERISTICS: VS = +5V (continued) At TA = 25°C, G = +2, RF = 750Ω, RL = 150Ω to VS/2, and input VCM = 2.5V, unless otherwise noted (see Figure 1).
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"#$ www.ti.com SBOS263F − AUGUST 2004 − REVISED AUGUST 2008 TYPICAL CHARACTERISTICS: VS = +5V (continued) At TA = 25°C, G = +2, RF = 750Ω, RL = 150Ω to VS/2, and input VCM = 2.5V, unless otherwise noted (see Figure 1). INPUT VOLTAGE AND CURRENT NOISE DENSITY CLOSED−LOOP OUTPUT IMPEDANCE vs FREQUENCY 100 Output Impedance (Ω) Voltage Noise (nV/√Hz) Current Noise (pA/√Hz) 100 Voltage Noise (9.2nV/√Hz) 10 Current Noise (3.5pA/√Hz) 10 1 0.1 0.
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"#$ www.ti.com SBOS263F − AUGUST 2004 − REVISED AUGUST 2008 TYPICAL CHARACTERISTICS: VS = +5V (continued) At TA = 25°C, G = +2, RF = 750Ω, RL = 150Ω to VS/2, and input VCM = 2.5V, unless otherwise noted (see Figure 1). TYPICAL DC DRIFT OVER TEMPERATURE SUPPLY AND OUTPUT CURRENT vs TEMPERATURE 6 2 4 1 2 10 × Input Offset Current (IOS) 0 0 −1 −2 −2 −4 Input Offset Voltage (VOS) −3 −8 −50 −25 −6 25 50 75 100 90 85 5.0 4.5 Output Current, Sinking 80 4.0 75 3.5 70 3.
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"#$ www.ti.com SBOS263F − AUGUST 2004 − REVISED AUGUST 2008 TYPICAL CHARACTERISTICS: VS = +5V, Differential Configuration At TA = 25°C, G = +2, RF = 604Ω, and RL = 500Ω differential, unless otherwise noted. DIFFERENTIAL SMALL−SIGNAL FREQUENCY RESPONSE +5V 3 1.2kΩ GD = 1 2.5V 0 R 0.1µF OPA830 Normalized Gain (dB) 1.2kΩ 60 4Ω G 60 4Ω VI R VO L +5V R GD = 2 −3 −6 GD = 5 −9 GD = 10 −12 G 1.2kΩ 1.2kΩ VO = 200mVPP RL = 500Ω OPA830 2.5V 0.
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"#$ www.ti.com SBOS263F − AUGUST 2004 − REVISED AUGUST 2008 TYPICAL CHARACTERISTICS: VS = +3V At TA = 25°C, G = +2, and RL = 150Ω to VS/3, unless otherwise noted (see Figure 2). INVERTING SMALL−SIGNAL FREQUENCY RESPONSE 3 3 0 Normalized Gain (dB) Normalized Gain (dB) NONINVERTING SMALL−SIGNAL FREQUENCY RESPONSE 6 0 G = +2 −3 G = +5 −6 −9 G = +10 −12 RL = 150Ω VO = 0.2VPP See Figure 2 −15 −18 1 G = −1 −3 G = −2 −6 G = −5 −9 G = −10 −12 RL = 150Ω VO = 0.
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"#$ www.ti.com SBOS263F − AUGUST 2004 − REVISED AUGUST 2008 TYPICAL CHARACTERISTICS: VS = +3V (continued) At TA = 25°C, G = +2, and RL = 150Ω to VS/3, unless otherwise noted (see Figure 2).
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"#$ www.ti.com SBOS263F − AUGUST 2004 − REVISED AUGUST 2008 TYPICAL CHARACTERISTICS: VS = +3V (continued) At TA = 25°C, G = +2, and RL = 150Ω to VS/3, unless otherwise noted (see Figure 2). OUTPUT SWING vs LOAD RESISTANCE 3.5 Output Voltage (V) 3.0 2.5 2.0 G = +5V/V 1.5 1.0 0.5 0 −0.
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"#$ www.ti.com SBOS263F − AUGUST 2004 − REVISED AUGUST 2008 TYPICAL CHARACTERISTICS: VS = +3V, Differential Configuration At TA = 25°C, G = +2, RF = 604Ω, and RL = 500Ω differential, unless otherwise noted. +3V DIFFERENTIAL SMALL−SIGNAL FREQUENCY RESPONSE 3 2kΩ 1V 0 OPA830 Normalized Gain (dB) 0.1µF 1kΩ 60 4Ω RG 60 4Ω VI RL VO +3V RG GD = 1 −3 GD = 5 −9 GD = 10 −12 2kΩ OPA830 1V −15 0.
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"#$ www.ti.com SBOS263F − AUGUST 2004 − REVISED AUGUST 2008 APPLICATIONS INFORMATION WIDEBAND VOLTAGE-FEEDBACK OPERATION The OPA830 is a unity-gain stable, very high-speed voltage-feedback op amp designed for single-supply operation (+3V to +10V). The input stage supports input voltages below ground and to within 1.7V of the positive supply. The complementary common-emitter output stage provides an output swing to within 25mV of ground and the positive supply.
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"#$ www.ti.com SBOS263F − AUGUST 2004 − REVISED AUGUST 2008 +5V 0.1µF +VS 6.8µF + R2 50Ω Source R1 348Ω VIN VIN VO 50Ω 150Ω 0.01µF RF 750Ω RG 750Ω + R3 6.8µF 0.1µF −5V Figure 3. DC-Coupled, G = +2, Bipolar Supply Specification and Test Circuit SINGLE-SUPPLY ADC INTERFACE The ADC interface on the front page shows a DC-coupled, single-supply ADC driver circuit. Many systems are now requiring +3V supply capability of both the ADC and its driver.
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"#$ www.ti.com SBOS263F − AUGUST 2004 − REVISED AUGUST 2008 +5V 1.87kΩ Video DAC 47µF 75Ω VO OPA830 78.7Ω 75Ω Load 22µF 845Ω 325Ω 528Ω 650Ω Figure 5. Video Line Driver with SAG Correction The input is shifted slightly positive in Figure 5 using the voltage divider from the positive supply. This gives about a 200mV input DC offset that will show up at the output pin as a 400mV DC offset when the DAC output is at zero current during the sync tip portion of the video signal.
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"#$ www.ti.com SBOS263F − AUGUST 2004 − REVISED AUGUST 2008 SINGLE-SUPPLY ACTIVE FILTER The OPA830, while operating on a single +3V or +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. Figure 8 shows an example design of a 1MHz low-pass Butterworth filter using the Sallen-Key topology.
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"#$ www.ti.com SBOS263F − AUGUST 2004 − REVISED AUGUST 2008 MACROMODEL AND APPLICATIONS SUPPORT Computer simulation of circuit performance using SPICE is often a quick way to analyze the performance of the OPA830 and its circuit designs. This is particularly true for video and RF amplifier circuits where parasitic capacitance and inductance can play a major role on circuit performance. A SPICE model for the OPA830 is available through the TI web page (www.ti.com).
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"#$ www.ti.com SBOS263F − AUGUST 2004 − REVISED AUGUST 2008 +5V + 0.1µF 6.8µF 2RT 1.5kΩ 150Ω 0.1µF 50Ω Source 0.1µF 2RT 1.5kΩ RG 374Ω OPA830 +VS 2 RF 750Ω RM 57.6Ω Figure 9. AC-Coupled, G = −2 Example Circuit In the inverting configuration, three key design considerations must be noted. The first consideration is that the gain resistor (RG) becomes part of the signal channel input impedance.
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"#$ www.ti.com SBOS263F − AUGUST 2004 − REVISED AUGUST 2008 is to isolate the capacitive load from the feedback loop by inserting a series isolation resistor between the amplifier output and the capacitive load. The Typical Characteristic curves show the recommended RS versus capacitive load and the resulting frequency response at the load. Parasitic capacitive loads greater than 2pF can begin to degrade the performance of the OPA830.
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"#$ www.ti.com SBOS263F − AUGUST 2004 − REVISED AUGUST 2008 resistances), using worst-case +25°C input offset voltage and current specifications, gives a worst-case output offset voltage equal to: (NG = noninverting signal gain at DC) ±(NG × VOS(MAX)) + (RF × IOS(MAX)) = ±(2 × 7mV) × (375Ω × 1µA) = ±14.38mV A fine-scale output offset null, or DC operating point adjustment, is often required. Numerous techniques are available for introducing DC offset control into an op amp circuit.
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"#$ www.ti.com SBOS263F − AUGUST 2004 − REVISED AUGUST 2008 significant time constants that can degrade performance. Good axial metal film or surface-mount resistors have approximately 0.2pF in shunt with the resistor. For resistor values > 1.5kΩ, this parasitic capacitance can add a pole and/or zero below 500MHz that can effect circuit operation. Keep resistor values as low as possible consistent with load driving considerations.
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www.ti.com SBOS263F − AUGUST 2004 − REVISED AUGUST 2008 Revision History DATE REV PAGE SECTION 8/08 F 2 Absolute Maximum Ratings 8/07 E 1 Features DESCRIPTION Changed Storage Temperature minimum value from −40°C to −65°C. Changed 550V/ns to 550V/µs. NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
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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) OPA830IDBVR SOT-23 DBV 5 3000 180.0 OPA830IDBVT SOT-23 DBV 5 250 OPA830IDR 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) OPA830IDBVR SOT-23 DBV 5 3000 210.0 185.0 35.0 OPA830IDBVT SOT-23 DBV 5 250 210.0 185.0 35.0 OPA830IDR 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.