Datasheet

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LMH6715

www.ti.com

SNOSA10C –MAY 2002–REVISED APRIL 2013

LMH6715 Dual Wideband Video Op Amp

Check for Samples: LMH6715

FEATURES

DESCRIPTION

The LMH6715 combines TI's VIP10 high speed

• T

= 25°C, R

= 100Ω, Typical Values Unless

complementary bipolar process with TI's current

Specified.

feedback topology to produce a very high speed dual

• Very Low Diff. Gain, Phase: 0.02%, 0.02°

op amp. The LMH6715 provides 400MHz small signal

• Wide Bandwidth: 480MHz (A

= +1V/V);

bandwidth at a gain of +2V/V and 1300V/μs slew rate

while consuming only 5.8mA per amplifier from ±5V

400MHz (A

= +2V/V)

supplies.

• 0.1dB Gain Flatness to 100MHz

The LMH6715 offers exceptional video performance

• Low Power: 5.8mA/Channel

with its 0.02% and 0.02° differential gain and phase

• −70dB Channel-to-Channel Crosstalk (10MHz)

errors for NTSC and PAL video signals while driving

• Fast Slew Rate: 1300V/μs

up to four back terminated 75Ω loads. The LMH6715

also offers a flat gain response of 0.1dB to 100MHz

• Unity Gain Stable

and very low channel-to-channel crosstalk of −70dB

• Improved Replacement for CLC412

at 10MHz. Additionally, each amplifier can deliver

70mA of output current. This level of performance

APPLICATIONS

makes the LMH6715 an ideal dual op amp for high

density, broadcast quality video systems.

• HDTV, NTSC & PAL Video Systems

• Video Switching and Distribution

The LMH6715's two very well matched amplifiers

support a number of applications such as differential

• IQ Amplifiers

line drivers and receivers. In addition, the LMH6715

• Wideband Active Filters

is well suited for Sallen Key active filters in

• Cable Drivers

applications such as anti-aliasing filters for high

speed A/D converters. Its small 8-pin SOIC package,

• DC Coupled Single-to-Differential Conversions

low power requirement, low noise and distortion allow

the LMH6715 to serve portable RF applications such

as IQ channels.

Differential Gain & Phase with Multiple Video Loads

Figure 1.

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 (21 pages)

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LMH6715 www.ti.com SNOSA10C – MAY 2002 – REVISED APRIL 2013 LMH6715 Dual Wideband Video Op Amp Check for Samples: LMH6715 FEATURES DESCRIPTION • The LMH6715 combines TI's VIP10 high speed complementary bipolar process with TI's current feedback topology to produce a very high speed dual op amp. The LMH6715 provides 400MHz small signal bandwidth at a gain of +2V/V and 1300V/μs slew rate while consuming only 5.8mA per amplifier from ±5V supplies.
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LMH6715 SNOSA10C – MAY 2002 – REVISED APRIL 2013 www.ti.com Frequency Response vs. VOUT Figure 2. These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates. Absolute Maximum Ratings (1) (2) ESD Tolerance (3) Human Body Model 2000V Machine Model 150V VCC ±6.75V IOUT See (4) Common-Mode Input Voltage ±VCC Differential Input Voltage 2.
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LMH6715 www.ti.com SNOSA10C – MAY 2002 – REVISED APRIL 2013 Electrical Characteristics (1) AV = +2, RF = 500Ω, VCC = ±5 V, RL = 100Ω; unless otherwise specified. Boldface limits apply at the temperature extremes. Symbol Parameter Conditions Min Typ Max Units 280 400 MHz 170 MHz dB Frequency Domain Response SSBW -3dB Bandwidth VOUT < 0.5VPP, RF = 300Ω LSBW -3dB Bandwidth VOUT < 4.0VPP, RF = 300Ω Gain Flatness VOUT < 0.5VPP GFP Peaking DC to 100MHz, RF = 300Ω 0.
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LMH6715 SNOSA10C – MAY 2002 – REVISED APRIL 2013 www.ti.com Electrical Characteristics(1) (continued) AV = +2, RF = 500Ω, VCC = ±5 V, RL = 100Ω; unless otherwise specified. Boldface limits apply at the temperature extremes. Symbol VO Parameter Output Voltage Range VOL Conditions Min RL = ∞ RL = 100Ω CMIR Input Voltage Range IO Output Current ±3.5 ±3.4 Common Mode Typ Max Units ±4.0 V ±3.9 V ±2.2 V 70 mA Connection Diagram Figure 3.
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LMH6715 www.ti.com SNOSA10C – MAY 2002 – REVISED APRIL 2013 Typical Performance Characteristics (TA = 25°C, VCC = ±5V, AV = ±2V/V, RF = 500Ω, RL = 100Ω, unless otherwise specified). Non-Inverting Freq·uency Response Inverting Frequency Response Figure 4. Figure 5. Non-Inverting Frequency Response vs. VOUT Small Signal Channel Matching Figure 6. Figure 7. Frequency Response vs. Load Resistance Non-Inverting Frequency Response vs. RF Figure 8. Figure 9.
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LMH6715 SNOSA10C – MAY 2002 – REVISED APRIL 2013 www.ti.com Typical Performance Characteristics (continued) (TA = 25°C, VCC = ±5V, AV = ±2V/V, RF = 500Ω, RL = 100Ω, unless otherwise specified). 6 Small Signal Pulse Response Large Signal Pulse Response Figure 10. Figure 11. Input-Referred Crosstalk Settling Time vs. Accuracy Figure 12. Figure 13. −3dB Bandwidth vs. VOUT DC Errors vs. Temperature Figure 14. Figure 15.
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LMH6715 www.ti.com SNOSA10C – MAY 2002 – REVISED APRIL 2013 Typical Performance Characteristics (continued) (TA = 25°C, VCC = ±5V, AV = ±2V/V, RF = 500Ω, RL = 100Ω, unless otherwise specified). Open Loop Transimpedance, Z(s) Equivalent Input Noise vs. Frequency Figure 16. Figure 17. Differential Gain & Phase vs. Load Differential Gain vs. Frequency Figure 18. Figure 19. Differential Phase vs. Frequency Gain Flatness & Linear Phase Deviation Figure 20. Figure 21.
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LMH6715 SNOSA10C – MAY 2002 – REVISED APRIL 2013 www.ti.com Typical Performance Characteristics (continued) (TA = 25°C, VCC = ±5V, AV = ±2V/V, RF = 500Ω, RL = 100Ω, unless otherwise specified). 2nd Harmonic Distortion vs. Output Voltage 3rd Harmonic Distortion vs. Output Voltage Figure 22. Figure 23. Closed Loop Output Resistance PSRR & CMRR Figure 24. Figure 25. Suggested RS vs. CL Figure 26.
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LMH6715 www.ti.com SNOSA10C – MAY 2002 – REVISED APRIL 2013 APPLICATION SECTION Figure 27. Non-Inverting Configuration with Power Supply Bypassing Figure 28. Inverting Configuration with Power Supply Bypassing Application Introduction Offered in an 8-pin package for reduced space and cost, the wideband LMH6715 dual current-feedback op amp provides closely matched DC and AC electrical performance characteristics making the part an ideal choice for wideband signal processing.
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LMH6715 SNOSA10C – MAY 2002 – REVISED APRIL 2013 www.ti.com Frequency Response vs. RF Figure 29. Figure 29 shows the LMH6715's frequency response as RF is varied (RL = 100Ω, AV = +2). This plot shows that an RF of 200Ω results in peaking and marginal stability. An RF of 300Ω gives near maximal bandwidth and gain flatness with good stability, but with very light loads (RL > 300Ω) the device may show some peaking.
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LMH6715 www.ti.com SNOSA10C – MAY 2002 – REVISED APRIL 2013 RF vs. Inverting Gain Figure 31. When using the LMH6715 as a replacement for the CLC412, identical bandwidth can be obtained by using an appropriate value of RF . The chart “Frequency Response vs. RF” (see Figure 29) shows that an RF of approximately 700Ω will provide bandwidth very close to that of the CLC412. At other gains a similar increase in RF can be used to match the new and old parts.
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LMH6715 SNOSA10C – MAY 2002 – REVISED APRIL 2013 www.ti.com MATCHING PERFORMANCE With proper board layout, the AC performance match between the two LMH6715's amplifiers can be tightly controlled as shown in Typical Performance plot labeled “Small-Signal Channel Matching”. The measurements were performed with SMT components using a feedback resistor of 300Ω at a gain of +2V/V. The LMH6715's amplifiers, built on the same die, provide the advantage of having tightly matched DC characteristics.
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LMH6715 www.ti.com SNOSA10C – MAY 2002 – REVISED APRIL 2013 Applications Circuits SINGLE-TO-DIFFERENTIAL LINE DRIVER The LMH6715's well matched AC channel-response allows a single-ended input to be transformed to highly matched push-pull driver. From a 1V single-ended input the circuit of Figure 32 produces 1V differential signal between the two outputs. For larger signals the input voltage divider (R1 = 2R2) is necessary to limit the input voltage on channel 2. Figure 32.
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LMH6715 SNOSA10C – MAY 2002 – REVISED APRIL 2013 www.ti.com NON-INVERTING CURRENT-FEEDBACK INTEGRATOR The circuit of Figure 35 achieves its high speed integration by placing one of the LMH6715's amplifiers in the feedback loop of the second amplifier configured as shown. Figure 35. Current Feedback Integrator LOW NOISE WIDE-BANDWIDTH TRANSIMPEDANCE AMPLIFIER Figure 36 implements a low noise transimpedance amplifier using both channels of the LMH6715.
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LMH6715 www.ti.com SNOSA10C – MAY 2002 – REVISED APRIL 2013 REVISION HISTORY Changes from Revision B (April 2013) to Revision C • Page Changed layout of National Data Sheet to TI format ..........................................................................................................
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE OPTION ADDENDUM www.ti.com 1-Nov-2013 continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals. TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release.
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PACKAGE MATERIALS INFORMATION www.ti.com 23-Sep-2013 TAPE AND REEL INFORMATION *All dimensions are nominal Device LMH6715MAX/NOPB Package Package Pins Type Drawing SOIC D 8 SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) 2500 330.0 12.4 Pack Materials-Page 1 6.5 B0 (mm) K0 (mm) P1 (mm) 5.4 2.0 8.0 W Pin1 (mm) Quadrant 12.
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PACKAGE MATERIALS INFORMATION www.ti.com 23-Sep-2013 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) LMH6715MAX/NOPB SOIC D 8 2500 367.0 367.0 35.
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