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OPA2652

Dual, 700MHz, Voltage-Feedback

FEATURES DESCRIPTION

APPLICATIONS

1/2

OPA2652

1/2

OPA2652

DifferentialADCDriver

ADS807

12-Bit

53MHz

+In

-In

+5V

402W

+5V

24.9W

133W

200W

22pF

1.00kW

0.1 Fm

-5V

402W

24.9W

133W

200W

22pF

0.1 Fm

1.00kW

OPA2652

SBOS125A – JUNE 2000 – REVISED MAY 2006

OPERATIONAL AMPLIFIER

• WIDEBAND BUFFER: 700MHz, G = +1

The OPA2652 is a dual, low-cost, wideband voltage

feedback amplifier intended for price-sensitive

• WIDEBAND LINE DRIVER: 200MHz, G = +2

applications. It features a high gain bandwidth

• HIGH OUTPUT CURRENT: 140mA

product of 200MHz on only 5.5mA/channel quiescent

• LOW SUPPLY CURRENT: 5.5mA/Ch

current. Intended for operation on ± 5V supplies, it

• ULTRA-SMALL PACKAGE: SOT23-8 also supports applications on a single supply from

+6V to +12V with 140mA output current. Its classical

• LOW dG/d φ : 0.05%/0.03 °

differential input, voltage-feedback design allows

• HIGH SLEW RATE: 335V/ µ sec

wide application in active filters, integrators,

• SUPPLY VOLTAGE: ± 3V to ± 6V

transimpedance amplifiers, and differential receivers.

The OPA2652 is internally compensated for unity

gain stability. It has exceptional bandwidth (700MHz)

• A/D DRIVERS

as a unity gain buffer, with little peaking (0dB typ).

• CONSUMER VIDEO Excellent DC accuracy is achieved with a low 1.5mV

input offset voltage and 300nA input offset current.

• ACTIVE FILTERS

• PULSE DELAY CIRCUITS

Summary of content (23 pages)

PAGE 1
OP A2 OPA2652 652 SBOS125A – JUNE 2000 – REVISED MAY 2006 TM Dual, 700MHz, Voltage-Feedback OPERATIONAL AMPLIFIER FEATURES DESCRIPTION • • • • • • • • The OPA2652 is a dual, low-cost, wideband voltage feedback amplifier intended for price-sensitive applications. It features a high gain bandwidth product of 200MHz on only 5.5mA/channel quiescent current.
PAGE 2
OPA2652 www.ti.com SBOS125A – JUNE 2000 – REVISED MAY 2006 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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OPA2652 www.ti.com SBOS125A – JUNE 2000 – REVISED MAY 2006 ELECTRICAL CHARACTERISTICS: VS = ±5V At TA = +25°C, G = +2, RF = 402Ω, and RL = 100Ω, unless otherwise noted. See Figure 28 and Figure 29 for AC performance only.
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OPA2652 www.ti.com SBOS125A – JUNE 2000 – REVISED MAY 2006 ELECTRICAL CHARACTERISTICS: VS = ±5V (continued) At TA = +25°C, G = +2, RF = 402Ω, and RL = 100Ω, unless otherwise noted. See Figure 28 and Figure 29 for AC performance only. OPA2652U, E MIN/MAX OVER TEMPERATURE TYP PARAMETER CONDITIONS +25°C +25°C (2) 0°C to 70°C (3) –40°C to +85°C (3) UNITS MIN/ MAX TEST LEVEL (1) OUTPUT 1kΩ load ±3.0 ±2.4 V min A 100Ω load ±2.5 ±2.
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OPA2652 www.ti.com SBOS125A – JUNE 2000 – REVISED MAY 2006 TYPICAL CHARACTERISTICS: VS = ±5V At TA = +25°C, G = +2, RF = 402Ω, and RL = 100Ω, unless otherwise noted. See Figure 28 and Figure 29. NONINVERTING SMALL-SIGNAL FREQUENCY RESPONSE INVERTING SMALL-SIGNAL FREQUENCY RESPONSE 6 6 0 -3 G = +2 -6 -9 G = +5 -12 -15 G = +10 -18 G = -1 0 -3 G = -2 -6 -9 -12 G = -5 -15 -18 -21 G = -10 -21 -24 -24 1M 10M 100M 1G 1M 10M 100M Frequency (Hz) Figure 1. Figure 2.
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OPA2652 www.ti.com SBOS125A – JUNE 2000 – REVISED MAY 2006 TYPICAL CHARACTERISTICS: VS = ±5V (continued) At TA = +25°C, G = +2, RF = 402Ω, and RL = 100Ω, unless otherwise noted. See Figure 28 and Figure 29. HARMONIC DISTORTION vs NONINVERTING GAIN VO = 2VPP f = 5MHz HARMONIC DISTORTION vs INVERTING GAIN -50 VO = 2VPP f = 5MHz 3rd Harmonic Harmonic Distortion (dBc) Harmonic Distortion (dBc) -50 -60 2nd Harmonic -70 -80 -90 -60 2nd Harmonic -70 -80 -90 1 10 1 Gain Magnitude (V/V) Figure 7.
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OPA2652 www.ti.com SBOS125A – JUNE 2000 – REVISED MAY 2006 TYPICAL CHARACTERISTICS: VS = ±5V (continued) At TA = +25°C, G = +2, RF = 402Ω, and RL = 100Ω, unless otherwise noted. See Figure 28 and Figure 29. TWO-TONE, 3rd-ORDER SPURIOUS LEVEL COMPOSITE VIDEO dG/dφ -50 0.30 3rd-Order Spurious Level (dBc) df, Positive Video 0.25 -60 dG/df (%/°) 20MHz 10MHz -70 5MHz 1MHz -8 -6 -4 dG, Positive Video 0.05 Load Power at matched 50W load -90 df, Negative Video 0.15 0.10 2MHz -80 0.
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OPA2652 www.ti.com SBOS125A – JUNE 2000 – REVISED MAY 2006 TYPICAL CHARACTERISTICS: VS = ±5V (continued) At TA = +25°C, G = +2, RF = 402Ω, and RL = 100Ω, unless otherwise noted. See Figure 28 and Figure 29. CMRR AND PSRR vs FREQUENCY OPEN-LOOP GAIN AND PHASE 70 60 CMRR 80 +PSRR 70 0 60 -PSRR 50 40 30 20 -30 Open-Loop Phase 50 40 -90 30 -120 20 -150 Open-Loop Gain 10 -210 -10 1k 10k 100k 1M 10M -240 10k 100M 100k 1M 10M Figure 19.
PAGE 9
OPA2652 www.ti.com SBOS125A – JUNE 2000 – REVISED MAY 2006 TYPICAL CHARACTERISTICS: VS = ±5V (continued) At TA = +25°C, G = +2, RF = 402Ω, and RL = 100Ω, unless otherwise noted. See Figure 28 and Figure 29.
PAGE 10
OPA2652 www.ti.com SBOS125A – JUNE 2000 – REVISED MAY 2006 APPLICATIONS INFORMATION Wideband Voltage Feedback Operation The OPA2652 is a dual, low-power, wideband voltage feedback operational amplifier. Each channel is internally compensated to provide unity gain stability. The OPA2652 voltage feedback architecture features true differential and fully symmetrical inputs. This architecture minimizes offset errors, making the OPA2652 well-suited for implementing filter and instrumentation designs.
PAGE 11
OPA2652 www.ti.com SBOS125A – JUNE 2000 – REVISED MAY 2006 Differential ADC Driver 0 The circuit on the front page shows an OPA2652 driving the ADS807 analog-to-digital converter (ADC) differentially, at a gain of +2V/V. The outputs are AC-coupled to the converter to adjust for the difference in supply voltages. The 133Ω resistors at the noninverting inputs minimize DC offset errors. The differential topology minimizes even-order distortion products, such as second-harmonic distortion.
PAGE 12
OPA2652 www.ti.com SBOS125A – JUNE 2000 – REVISED MAY 2006 Video Line Driver C2 Figure 32 shows the OPA2652 used as a video line driver. Its outstanding differential gain and phase allow it to be used in studio equipment, while its low cost and SOT23-8 package option also support consumer applications. C1 402W 402W VIN VOUT +5V +5V 1/2 OPA2652 Video Input 75.0W Video Output 1/2 OPA2652 75.0W 402W -5V -5V 402W 402W Figure 34. Inverting Bandpass Filter DESIGN-IN TOOLS Figure 32.
PAGE 13
OPA2652 www.ti.com SBOS125A – JUNE 2000 – REVISED MAY 2006 OPERATING SUGGESTIONS Optimizing Resistor Values Because the OPA2652 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.
PAGE 14
OPA2652 www.ti.com SBOS125A – JUNE 2000 – REVISED MAY 2006 error, as a result of the input bias currents, is reduced to (Input Offset Current) • RF. If the 50Ω source impedance is DC-coupled in Figure 29, the total resistance to ground on the inverting input will be 429Ω. Combining this in parallel with the feedback resistor gives 208Ω, which is close to the RB = 205Ω used in Figure 29. To reduce the additional high-frequency noise introduced by this resistor, it is sometimes bypassed with a capacitor.
PAGE 15
OPA2652 www.ti.com SBOS125A – JUNE 2000 – REVISED MAY 2006 DC Accuracy and Offset Control ENI RS 1/2 OPA2652 IBN EO ERS RF 4kTRS IBI RG 4kT RG 4kTRF -20 4kT = 1.6 x 10 at 290°K J Figure 35. Op Amp Noise Analysis Model The total output spot noise voltage can be computed as the square root of the sum of all squared output noise voltage contributors. Equation 1 shows the general form for the output noise voltage using the terms shown in Figure 35.
PAGE 16
OPA2652 www.ti.com SBOS125A – JUNE 2000 – REVISED MAY 2006 +5V Supply Decoupling Not Shown 0.1mF 328W 1/2 OPA2652 This absolute worst-case condition meets the specified maximum junction temperature. Actual PDL will almost always be less than that considered here. Carefully consider maximum TJ in your application. VO BOARD LAYOUT GUIDELINES Achieving optimum performance with a high-frequency amplifier such as the OPA2652 requires careful attention to board layout parasitics and external component types.
PAGE 17
OPA2652 www.ti.com SBOS125A – JUNE 2000 – REVISED MAY 2006 of the board between the output and inverting input pins. Even with a low parasitic capacitance shunting the external resistors, excessively high resistor values can create 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.
PAGE 18
OPA2652 www.ti.com SBOS125A – JUNE 2000 – REVISED MAY 2006 Revision History NOTE: Page numbers for previous revisions may differ from page numbers in the current version. Changes from Original (June 2000) to A Revision ........................................................................................................ Page • • • • 18 Changed format of data sheet. Updated to XML from PageMaker. .....................................................................................
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PACKAGE OPTION ADDENDUM www.ti.
PAGE 20
PACKAGE OPTION ADDENDUM www.ti.com 20-Aug-2011 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.
PAGE 21
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) OPA2652E/250 SOT-23 DCN 8 250 180.0 OPA2652E/3K SOT-23 DCN 8 3000 OPA2652U/2K5 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.
PAGE 22
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) OPA2652E/250 SOT-23 DCN OPA2652E/3K SOT-23 DCN 8 250 210.0 185.0 35.0 8 3000 210.0 185.0 35.0 OPA2652U/2K5 SOIC D 8 2500 367.0 367.0 35.
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