Datasheet

ManualsBrandsTEXAS INSTRUMENTS ManualsLinear ICsLinear IC - Amplifier - Video buffering Rail-to-rail 99 MHz SOT 23 5

FEATURES

D HIGH BANDWIDTH: 80MHz (G = +2)

D LOW SUPPLY CURRENT: 3.9mA

D FLEXIBLE SUPPLY RANGE:

+2.8V to +11V Single Supply

±1.4V to ±5.5V Dual Supply

D INPUT RANGE INCLUDES GROUND ON

SINGLE SUPPLY

D 4.9V

OUTPUT SWING ON +5V SUPPLY

D HIGH SLEW RATE: 350V/µsec

D LOW INPUT VOLTAGE NOISE: 9.3nV/√Hz

D Pb-FREE SOT23 PACKAGE

APPLICATIONS

D SINGLE-SUPPLY VIDEO LINE DRIVERS

D CCD IMAGING CHANNELS

D LOW-POWER ULTRASOUND

D PORTABLE CONSUMER ELECTRONICS

DESCRIPTION

The OPA832 is a low-power, high-speed, fixed-gain

amplifier designed to operate on a single +3.3V or +5V

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

ported. The input range extends below ground and to

within 1V of the positive supply. Using complementary

common-emitter outputs provides an output swing to

within 30mV of ground and 130mV of the positive sup-

ply. The high output drive current and low differential

gain and phase errors also make it ideal for single-sup-

ply consumer video products.

Low distortion operation is ensured by the high gain

bandwidth product (200MHz) and slew rate (850V/µs),

making the OPA832 an ideal input buffer stage to 3V

and 5V CMOS converters. Unlike other low-power,

single-supply amplifiers, distortion performance im-

proves as the signal swing is decreased. A low 9.3nV/√

Hz input voltage noise supports wide dynamic range op-

eration.

The OPA832 is available in an industry-standard SO-8

package. The OPA832 is also available in an ultra-small

SOT23-5 package. For gains other than +1, −1, or +2,

consider using the OPA830.

Summary of content (30 pages)

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OPA832 SBOS266E − JUNE 2003 − REVISED AUGUST 2008 Low-Power, Single-Supply, Fixed-Gain Video Buffer Amplifier FEATURES DESCRIPTION D HIGH BANDWIDTH: 80MHz (G = +2) D LOW SUPPLY CURRENT: 3.9mA D FLEXIBLE SUPPLY RANGE: D D D D D The OPA832 is a low-power, high-speed, fixed-gain amplifier designed to operate on a single +3.3V or +5V supply. Operation on ±5V or +10V supplies is also supported. The input range extends below ground and to within 1V of the positive supply.
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"#$ www.ti.com SBOS266E − JUNE 2003 − 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 SBOS266E − JUNE 2003 − REVISED AUGUST 2008 ELECTRICAL CHARACTERISTICS: VS = ±5V Boldface limits are tested at +25°C. At TA = 25°C, G = +2, and RL = 150Ω to GND, unless otherwise noted (see Figure 3). OPA832ID, IDBV TYP PARAMETER AC PERFORMANCE (see Figure 3) Small-Signal Bandwidth Peaking at a Gain of +1 Slew Rate Rise Time Fall Time Settling Time to 0.
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"#$ www.ti.com SBOS266E − JUNE 2003 − REVISED AUGUST 2008 ELECTRICAL CHARACTERISTICS: VS = +5V Boldface limits are tested at +25°C. At TA = 25°C, G = +2, and RL = 150Ω to VCM = 2V, unless otherwise noted (see Figure 1). OPA832ID, IDBV TYP PARAMETER AC PERFORMANCE (see Figure 1) Small-Signal Bandwidth Peaking at a Gain of +1 Slew Rate Rise Time Fall Time Settling Time to 0.
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"#$ www.ti.com SBOS266E − JUNE 2003 − REVISED AUGUST 2008 ELECTRICAL CHARACTERISTICS: VS = +3.3V Boldface limits are tested at +25°C. At TA = 25°C, G = +2, and RL = 150Ω to VCM = 0.75V, unless otherwise noted (see Figure 2). OPA832ID, IDBV TYP PARAMETER AC PERFORMANCE (see Figure 2) Small-Signal Bandwidth Peaking at a Gain of +1 Slew Rate Rise Time Fall Time Settling Time to 0.
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"#$ www.ti.com SBOS266E − JUNE 2003 − REVISED AUGUST 2008 TYPICAL CHARACTERISTICS: VS = ±5V At TA = 25°C, G = +2, and RL = 150Ω to GND, unless otherwise noted (see Figure 3). SMALL−SIGNAL FREQUENCY RESPONSE 3 −3 G = −1 −6 −9 G = +2 −6 VO = 4VPP −15 −15 100 VO = 0.5VPP −9 −12 10 VO = 1VPP −3 −12 1 RL = 150Ω G = +2V/V 0 Normalized Gain (dB) 0 Normalized Gain (dB) LARGE−SIGNAL FREQUENCY RESPONSE 3 VO = 0.
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"#$ www.ti.com SBOS266E − JUNE 2003 − REVISED AUGUST 2008 TYPICAL CHARACTERISTICS: VS = ±5V (continued) At TA = 25°C, G = +2, and RL = 150Ω to GND, unless otherwise noted (see Figure 3). HARMONIC DISTORTION vs LOAD RESISTANCE G = +2V/V VO = 2VPP f = 5MHz −50 −60 2nd−Harmonic −70 3rd−Harmonic −80 G = +2V/V RL = 500Ω f = 5MHz −60 −70 3rd−Harmonic −80 2nd−Harmonic −90 −100 −90 100 1 −40 2nd−Harmonic 3rd−Harmonic −90 −100 −110 0.
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"#$ www.ti.com SBOS266E − JUNE 2003 − REVISED AUGUST 2008 TYPICAL CHARACTERISTICS: VS = +5V At TA = 25°C, G = +2, and RL = 150Ω to VCM = 2V, unless otherwise noted (see Figure 1). SMALL−SIGNAL FREQUENCY RESPONSE 3 R L = 150Ω G = +2V/V 0 −3 Normalized Gain (dB) 0 Normalized Gain (dB) LARGE−SIGNAL FREQUENCY RESPONSE 3 VO = 0.
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"#$ www.ti.com SBOS266E − JUNE 2003 − REVISED AUGUST 2008 TYPICAL CHARACTERISTICS: VS = +5V (continued) At TA = 25°C, G = +2, and RL = 150Ω to VCM = 2V, unless otherwise noted (see Figure 1).
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"#$ www.ti.com SBOS266E − JUNE 2003 − REVISED AUGUST 2008 TYPICAL CHARACTERISTICS: VS = +5V (continued) At TA = 25°C, G = +2, and RL = 150Ω to VCM = 2V, unless otherwise noted (see Figure 1). COMPOSITE VIDEO dG/dP COMMON−MODE REJECTION RATIO AND POWER−SUPPLY REJECTION RATIO vs FREQUENCY 1.2 +5V 80 1.0 70 VI 60 0.8 50 dG/dP PSRR and CMRR (dB) Video Loads OPA832 CMRR +PSRR 40 dP 0.6 0.4 30 dG 20 0.
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"#$ www.ti.com SBOS266E − JUNE 2003 − REVISED AUGUST 2008 TYPICAL CHARACTERISTICS: VS = +5V (continued) At TA = 25°C, G = +2, and RL = 150Ω to VCM = 2V, unless otherwise noted (see Figure 1). TYPICAL DC DRIFT OVER TEMPERATURE Input Offset Voltage (mV) 0.8 8 Bias Current (IB) 0.6 6 4 0.4 0.2 0 2 10 × Input Offset (IOS) 0 −2 −0.2 −0.4 −4 Input Offset Voltage (VOS) −0.6 −6 −8 −0.8 −10 −20 0 20 40 60 80 100 120 130 −1.0 −40 Input Bias and Offset Voltage (µA) 10 1.
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"#$ www.ti.com SBOS266E − JUNE 2003 − REVISED AUGUST 2008 TYPICAL CHARACTERISTICS: VS = +3.3V At TA = 25°C, G = +2, and RL = 150Ω to VCM = 0.75V, unless otherwise noted (see Figure 2). SMALL−SIGNAL FREQUENCY RESPONSE 3 LARGE−SIGNAL FREQUENCY RESPONSE 3 VO = 0.2VPP RL = 150Ω 0 0 Normalized Gain (dB) G = −1 Normalized Gain (dB) RL = 150Ω G = +2V/V −3 G = +2 −6 −9 −12 VO = 1VPP −3 VO = 0.5VPP −6 −9 −12 −15 VO = 2VPP −15 1 10 100 300 1 10 Frequency (MHz) SMALL−SIGNAL PULSE RESPONSE 2.
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"#$ www.ti.com SBOS266E − JUNE 2003 − REVISED AUGUST 2008 TYPICAL CHARACTERISTICS: VS = +3.3V (continued) At TA = 25°C, G = +2, and RL = 150Ω to VCM = 0.75V, unless otherwise noted (see Figure 2). HARMONIC DISTORTION vs OUTPUT VOLTAGE HARMONIC DISTORTION vs LOAD RESISTANCE −40 G = +2V/V VO = 1VPP f = 5MHz −55 Harmonic Distortion (dBc) Harmonic Distortion (dBc) −50 −60 3rd−Harmonic −65 −70 2nd−Harmonic −75 100 1k −60 −70 2nd−Harmonic −80 −90 0.50 1.00 1.
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"#$ www.ti.com SBOS266E − JUNE 2003 − REVISED AUGUST 2008 APPLICATIONS INFORMATION WIDEBAND VOLTAGE-FEEDBACK OPERATION The OPA832 is a fixed-gain, high-speed, voltagefeedback op amp designed for single-supply operation (+3V to +10V). It features internal RF and RG resistors which make it easy to select a gain of +2, +1, and −1 without external resistors.The input stage supports input voltages below ground and to within 1.7V of the positive supply.
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"#$ www.ti.com SBOS266E − JUNE 2003 − REVISED AUGUST 2008 available through the TI web page (www.ti.com). The applications group is also available for design assistance. These models predict typical small signal AC, transient steps, DC performance, and noise under a wide variety of operating conditions. The models include the noise terms found in the electrical specifications of the data sheet. These models do not attempt to distinguish between the package types in their smallsignal AC performance.
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"#$ www.ti.com SBOS266E − JUNE 2003 − REVISED AUGUST 2008 CML output impedance, and connected to the transformer center tap, biasing the OPA832s. This input bias voltage is then amplified to provide the correct common-mode voltage to the input of the ADC. Using only 25.1mW power (3.8mA × 2 amplifiers × 3.3V), this configuration (amplifier + ADC) provides greater than 59dB SNR and 70dB SFDR to 2MHz, with all the components running on a low +3.3V supply.
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"#$ www.ti.com SBOS266E − JUNE 2003 − REVISED AUGUST 2008 This circuit removes the peaking by bootstrapping out any parasitic effects on RG. The input impedance is still set by RM as the apparent impedance looking into RG is very high. RM may be increased to show a higher input impedance, but larger values will start to impact DC output offset voltage. This circuit creates an additional input offset voltage as the difference in the two input bias current times the impedance to ground at VIN.
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"#$ www.ti.com SBOS266E − JUNE 2003 − REVISED AUGUST 2008 The criterion for setting this RS resistor is a 1dB peaked frequency response at the load. Increasing the noise gain will also reduce the peaking (see Figure 7). DISTORTION PERFORMANCE The OPA832 provides good distortion performance into a 150Ω load. Relative to alternative solutions, it provides exceptional performance into lighter loads and/or operating on a single +3.3V supply.
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"#$ www.ti.com SBOS266E − JUNE 2003 − REVISED AUGUST 2008 Dividing this expression by the noise gain (NG = (1 + RF/RG)) will give the equivalent input-referred spot noise voltage at the noninverting input, as shown in Equation 2: EN + Ǹ ENI ) ǒIBNR SǓ ) 4kTRS ) 2 2 ǒ Ǔ IBIRF NG 2 ) 4kTRF NG (2) Evaluating these two equations for the circuit and component values shown in Figure 1 will give a total output spot noise voltage of 19.3nV/√Hz and a total equivalent input spot noise voltage of 9.
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"#$ www.ti.com SBOS266E − JUNE 2003 − REVISED AUGUST 2008 should not be in close proximity to the signal I/O pins. Avoid narrow power and ground traces to minimize inductance between the pins and the decoupling capacitors. Each power-supply connection should always be decoupled with one of these capacitors. An optional supply decoupling capacitor (0.1µF) across the two power supplies (for bipolar operation) will improve 2ndharmonic distortion performance. Larger (2.2µF to 6.
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www.ti.com SBOS266E − JUNE 2003 − REVISED AUGUST 2008 Revision History DATE REV PAGE SECTION 8/08 E 2 Absolute Maximum Ratings 3/06 D 15 Design-In Tools DESCRIPTION Changed Storage Temperature minimum value from −40°C to −65°C. Board part number changed. 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 Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties.
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PACKAGE MATERIALS INFORMATION www.ti.com 12-Dec-2011 TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Pins Type Drawing SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) OPA832IDBVR SOT-23 DBV 5 3000 180.0 8.4 OPA832IDBVT SOT-23 DBV 5 250 180.0 8.4 Pack Materials-Page 1 B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant 3.2 3.1 1.39 4.0 8.0 Q3 3.2 3.1 1.39 4.0 8.
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PACKAGE MATERIALS INFORMATION www.ti.com 12-Dec-2011 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) OPA832IDBVR SOT-23 DBV 5 3000 210.0 185.0 35.0 OPA832IDBVT SOT-23 DBV 5 250 210.0 185.0 35.
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