PDF OPA820IDR Data sheet ( Hoja de datos )

Número de pieza	OPA820IDR
Descripción	Unity-Gain Stable/ Low-Noise/ Voltage-Feedback Operational Amplifier
Fabricantes	Burr-Brown Corporation
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No Preview Available ! OPA820 SBOS303A − JUNE 2004 − REVISED JULY 2004 Unity-Gain Stable, Low-Noise, Voltage-Feedback Operational Amplifier FEATURES D HIGH BANDWIDTH (240MHz, G = +2) D HIGH OUTPUT CURRENT (±110mA) D LOW INPUT NOISE (2.5nV/√Hz) D LOW SUPPLY CURRENT (5.6mA) D FLEXIBLE SUPPLY VOLTAGE Dual ±2.5V to ±6V Single +5V to +12V D EXCELLENT DC ACCURACY Maximum 25°C Input Offset Voltage = ±750µV Maximum 25°C Input Offset Current = ±400nA APPLICATIONS D LOW-COST VIDEO LINE DRIVERS D ADC PREAMPLIFIERS D ACTIVE FILTERS D LOW-NOISE INTEGRATORS D PORTABLE TEST EQUIPMENT D OPTICAL CHANNEL AMPLIFIERS D LOW-POWER, BASEBAND AMPLIFIERS D CCD IMAGING CHANNEL AMPLIFIERS D OPA650 AND OPA620 UPGRADE DESCRIPTION The OPA820 provides a wideband, unity-gain stable, voltage-feedback amplifier with a very low input noise voltage and high output current using a low 5.6mA supply current. At unity-gain, the OPA820 gives > 800MHz bandwidth with < 1dB peaking. The OPA820 complements this high-speed operation with excellent DC precision in a low-power device. A worst-case input offset voltage of ±750µV and an offset current of ±400nA give excellent absolute DC precision for pulse amplifier applications. Minimal input and output voltage swing headroom allow the OPA820 to operate on a single +5V supply with > 2VPP output swing. While not a rail-to-rail (RR) output, this swing will support most emerging analog-to-digital converter (ADC) input ranges with lower power and noise than typical RR output op amps. Exceptionally low dG/dP (0.01%/0.03°) supports low-cost composite video line driver applications. Existing designs can use the industry-standard pinout SO-8 package while emerging high-density portable applications can use the SOT23-5. Offering the industry’s lowest thermal impedance in a SOT package, along with full specification over both the commercial and industrial temperature ranges, gives solid performance over a wide temperature range. RELATED PRODUCTS SINGLES DUALS TRIPLES OPA354 OPA690 — — — OPA2354 OPA2690 OPA2652 OPA2822 — — OPA3690 — — — QUADS OPA4354 — — — OPA4820 FEATURES CMOS RR Output High Slew Rate SOT23-8 Low Noise Quad OPA820 +5V +5V RS 2kΩ 2kΩ VIN 0.1µF 24.9Ω OPA820 50Ω 100pF REFT (+3V) IN −5V 402Ω 2kΩ ADS850 14−Bit 10MSPS IN 402Ω 0.1µF 2kΩ (+2V) (+1V) REFB VREF SEL AC-Coupled, 14-Bit ADS850 Interface 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. All 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 Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. Copyright  2004, Texas Instruments Incorporated www.ti.com 1 page www.ti.com TYPICAL CHARACTERISTICS: VS = ±5V RF = 402Ω, RL = 100Ω, and G = +2, unless otherwise noted. NONINVERTING SMALL−SIGNAL FREQUENCY RESPONSE 3 G = +1 0 RF = 0Ω G = +5 −3 G = +2 −6 G = +10 −9 −12 VO = 0.1VPP −15 RL = 100Ω See Figure 1 −18 1M 10M 100M Frequency (Hz) 1G NONINVERTING LARGE−SIGNAL FREQUENCY RESPONSE 9 VO = 0.5VPP 6 3 0 −3 −6 G = +2 −9 RL = 100Ω See Figure 1 −12 1 VO = 1VPP VO = 2VPP VO = 4VPP 10 100 Frequency (MHz) 500 NONINVERTING PULSE RESPONSE 0.4 0.3 Large Signal ± 1V Right Scale 0.2 0.1 Small Signal ± 100mV 0 Left Scale −0.1 −0.2 −0.3 G = +2 See Figure 1 −0.4 Time (10ns/div) 2.0 1.5 1.0 0.5 0 −0.5 −1.0 −1.5 −2.0 OPA820 SBOS303A − JUNE 2004 − REVISED JULY 2004 INVERTING SMALL−SIGNAL FREQUENCY RESPONSE 3 G = −1 0 G = −2 −3 G = −5 −6 −9 −12 −15 VO = 0.1VPP RL = 100Ω See Figure 2 −18 1 G = −10 10 100 Frequency (MHz) 500 INVERTING LARGE−SIGNAL FREQUENCY RESPONSE 3 VO = 0.5VPP 0 −3 −6 −9 −12 G = −1 −15 RL = 100Ω See Figure 2 −18 1 VO = 1VPP VO = 2VPP VO = 4VPP 10 100 Frequency (MHz) 500 INVERTING PULSE RESPONSE 0.4 G = −1 0.3 See Figure 2 0.2 0.1 0 Small Signal ± 100mV Left Scale −0.1 −0.2 Large Signal ± 1V −0.3 Right Scale −0.4 Time (10ns/div) 2.0 1.5 1.0 0.5 0 −0.5 −1.0 −1.5 −2.0 5 5 Page www.ti.com TYPICAL CHARACTERISTICS: VS = +5V (continued) RF = 402Ω, RL = 100Ω, and G = +2, unless otherwise noted. OPA820 SBOS303A − JUNE 2004 − REVISED JULY 2004 HARMONIC DISTORTION vs LOAD RESISTANCE −75 f = 1MHz −80 2nd−Harmonic VO = 2VPP G = +2V/V −85 −90 −95 −100 −105 100 3rd−Harmonic Resistance (Ω) See Figure 3 1k HARMONIC DISTORTION vs FREQUENCY −60 G = +2V/V RL = 200Ω −70 VO = 2VPP 2nd−Harmonic −80 −90 −100 See Figure 3 −110 0.1 3rd−Harmonic 1 Frequency (MHz) 10 HARMONIC DISTORTION vs OUTPUT VOLTAGE −70 VO = 2VPP f = 1MHz G = +2V/V −80 RL = 200Ω 2nd−Harmonic −90 −100 3rd−Harmonic See Figure 3 −110 0.1 1 Output Voltage Swing (VPP) 10 HARMONIC DISTORTION vs INVERTING GAIN −70 f = 1MHz −75 RL = 200Ω VO = 2VPP 2nd−Harmonic −80 −85 3rd−Harmonic −90 −95 See Figure 4 −100 1 Gain (\| V/V\| ) 10 HARMONIC DISTORTION vs NONINVERTING GAIN −60 f = 1MHz −70 RL = 200Ω VO = 2VPP 2nd−Harmonic −80 −90 −100 −110 1 3rd−Harmonic Gain (V/V) See Figure 3 10 40 35 30 25 20 15 0 TWO−TONE, 3RD−ORDER INTERMODULATION INTERCEPT +5 V 0.01µF 80 6Ω PI 57.6 Ω 806Ω OPA820 402Ω 4 02 Ω 0 .01 µF PO 200 Ω 5 10 15 20 25 30 Frequency (MHz) 11 11 Page

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