Datasheet

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

OUT

+IN

-IN

4 5

N/C

-IN

+IN

N/C

OUT

N/C

LMH6624

www.ti.com

SNOSA42F –NOVEMBER 2002–REVISED MARCH 2013

LMH6624/LMH6626 Single/Dual Ultra Low Noise Wideband Operational Amplifier

Check for Samples: LMH6624

FEATURES

DESCRIPTION

The LMH6624/LMH6626 offer wide bandwidth

• V

= ±6V, T

= 25°C, A

= 20, (Typical values

(1.5GHz for single, 1.3GHz for dual) with very low

unless specified)

input noise (0.92nV/√Hz, 2.3pA/√Hz) and ultra low dc

• Gain Bandwidth (LMH6624) 1.5GHz

errors (100μV V

, ±0.1μV/°C drift) providing very

• Input Voltage Noise 0.92nV/√Hz

precise operational amplifiers with wide dynamic

range. This enables the user to achieve closed-loop

• Input Offset Voltage (limit over temp) 700µV

gains of greater than 10, in both inverting and non-

• Slew Rate 350V/μs

inverting configurations.

• Slew Rate (A

= 10) 400V/μs

The LMH6624 (single) and LMH6626’s (dual)

• HD2 @ f = 10MHz, R

= 100Ω −63dBc

traditional voltage feedback topology provide the

• HD3 @ f = 10MHz, R

= 100Ω −80dBc

following benefits: balanced inputs, low offset voltage

and offset current, very low offset drift, 81dB open

• Supply Voltage Range (dual supply) ±2.5V to

loop gain, 95dB common mode rejection ratio, and

±6V

88dB power supply rejection ratio.

• Supply Voltage Range (single supply) +5V to

The LMH6624/LMH6626 operate from ± 2.5V to ± 6V

+12V

in dual supply mode and from +5V to +12V in single

• Improved Replacement for the CLC425

supply configuration.

(LMH6624)

LMH6624 is offered in SOT-23-5 and SOIC-8

• Stable for Closed Loop |A

| ≥ 10

packages.

The LMH6626 is offered in SOIC-8 and VSSOP-8

APPLICATIONS

packages.

• Instrumentation Sense Amplifiers

• Ultrasound Pre-amps

• Magnetic Tape & Disk Pre-amps

• Wide band active filters

• Professional Audio Systems

• Opto-electronics

• Medical Diagnostic Systems

Connection Diagram

LMH6624 5-Pin SOT-23 LMH6624 8-Pin SOIC LMH6626 8-Pin SOIC/VSSOP

Figure 1. Top View Figure 2. Top View Figure 3. Top View

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 (31 pages)

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LMH6624 www.ti.com SNOSA42F – NOVEMBER 2002 – REVISED MARCH 2013 LMH6624/LMH6626 Single/Dual Ultra Low Noise Wideband Operational Amplifier Check for Samples: LMH6624 FEATURES DESCRIPTION • The LMH6624/LMH6626 offer wide bandwidth (1.5GHz for single, 1.3GHz for dual) with very low input noise (0.92nV/√Hz, 2.3pA/√Hz) and ultra low dc errors (100μV VOS, ±0.1μV/°C drift) providing very precise operational amplifiers with wide dynamic range.
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LMH6624 SNOSA42F – NOVEMBER 2002 – REVISED MARCH 2013 www.ti.com 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) ESD Tolerance Human Body Model Machine Model 2000V (2) 200V (3) VIN Differential ±1.2V Supply Voltage (V+ - V−) 13.2V V+ +0.5V, V− −0.
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LMH6624 www.ti.com SNOSA42F – NOVEMBER 2002 – REVISED MARCH 2013 ±2.5V Electrical Characteristics Unless otherwise specified, all limits ensured at TA = 25°C, V+ = 2.5V, V− = −2.5V, VCM = 0V, AV = +20, RF = 500Ω, RL = 100Ω. Boldface limits apply at the temperature extremes. See (1).
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LMH6624 SNOSA42F – NOVEMBER 2002 – REVISED MARCH 2013 www.ti.com ±2.5V Electrical Characteristics (continued) Unless otherwise specified, all limits ensured at TA = 25°C, V+ = 2.5V, V− = −2.5V, VCM = 0V, AV = +20, RF = 500Ω, RL = 100Ω. Boldface limits apply at the temperature extremes. See (1). Symbol Parameter Conditions Min Typ RL = 100Ω ±1.1 ±1.0 ±1.5 No Load ±1.4 ±1.25 ±1.
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LMH6624 www.ti.com SNOSA42F – NOVEMBER 2002 – REVISED MARCH 2013 ±6V Electrical Characteristics Unless otherwise specified, all limits ensured at TA = 25°C, V+ = 6V, V− = −6V, VCM = 0V, AV = +20, RF = 500Ω, RL = 100Ω. Boldface limits apply at the temperature extremes. See (1).
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LMH6624 SNOSA42F – NOVEMBER 2002 – REVISED MARCH 2013 www.ti.com ±6V Electrical Characteristics (continued) Unless otherwise specified, all limits ensured at TA = 25°C, V+ = 6V, V− = −6V, VCM = 0V, AV = +20, RF = 500Ω, RL = 100Ω. Boldface limits apply at the temperature extremes. See (1). Symbol Xt Parameter Crosstalk Rejection Conditions Min (2) Typ (3) Max (2) −75 f = 1MHz (LMH6626) Units dB Output Characteristics VO Output Swing (LMH6624) RL = 100Ω ±4.4 ±4.3 ±4.9 (LMH6624) No Load ±4.
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LMH6624 www.ti.com SNOSA42F – NOVEMBER 2002 – REVISED MARCH 2013 Typical Performance Characteristics Voltage Noise vs. Frequency Current Noise vs. Frequency Figure 4. Figure 5. Inverting Frequency Response Inverting Frequency Response 5 5 VS = ±2.5V 3 AV = -10 RL = 100: 2 AV = -20 1 0 -1 AV = -40 -2 AV = -60 -3 AV = -80 -4 AV = -20 0 -1 AV = -40 -2 AV = -60 -3 AV = -80 -4 AV = -100 -5 1M 100k 10k 10M 100M 1k 1G Figure 6. Figure 7.
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LMH6624 SNOSA42F – NOVEMBER 2002 – REVISED MARCH 2013 www.ti.com Typical Performance Characteristics (continued) Open Loop Frequency Response Over Temperature 80 -40°C 70 Open Loop Frequency Response Over Temperature 0 -45 25°C PHASE -90 125°C -40°C 50 -135 125°C GAIN 40 -180 25°C 30 -225 20 -270 PHASE (°) GAIN (dB) 60 -315 10 VS = ±2.5V 0 100k 1M 10M 100M -360 1G FREQUENCY (Hz) Figure 10. Figure 11. Frequency Response with Cap. Loading Frequency Response with Cap.
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LMH6624 www.ti.com SNOSA42F – NOVEMBER 2002 – REVISED MARCH 2013 Typical Performance Characteristics (continued) Non-Inverting Frequency Response Varying VIN Non-Inverting Frequency Response Varying VIN 5 3 VS = ±6V 4 AV = +10 RF = 500: 2 VIN = 20mV 1 0 -1 -2 VIN = 200mV NOMALIZED GAIN (dB) NOMALIZED GAIN (dB) 4 5 VS = ±2.
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LMH6624 SNOSA42F – NOVEMBER 2002 – REVISED MARCH 2013 www.ti.com Typical Performance Characteristics (continued) Sourcing Current vs. VOUT (LMH6624) Sourcing Current vs. VOUT (LMH6626) 160 140 -40°C -40°C 140 120 120 ISOURCE (mA) ISOURCE (mA) 100 125°C 100 25°C 80 60 80 25°C 125°C 60 40 40 20 20 VS = ±2.5V VS = ±2.5V 0 0 0 0.5 1 1.5 0 0.5 1 1.5 VOUT (V) VOUT (V) Figure 22. Figure 23. Sourcing Current vs. VOUT (LMH6624) Sourcing Current vs.
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LMH6624 www.ti.com SNOSA42F – NOVEMBER 2002 – REVISED MARCH 2013 Typical Performance Characteristics (continued) Sinking Current vs. VOUT (LMH6624) Sinking Current vs. VOUT (LMH6626) 140 160 -40°C -40°C 140 120 120 125°C 25°C 100 125°C ISINK (mA) ISINK (mA) 100 80 60 25°C 80 60 40 40 20 20 0 VS = ±2.5V VS = ±2.5V 0 -20 0 0.5 1 0 1.5 0.5 VOUT (V) 1 1.5 VOUT (V) Figure 28. Figure 29. Sinking Current vs. VOUT (LMH6624) Sinking Current vs.
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LMH6624 SNOSA42F – NOVEMBER 2002 – REVISED MARCH 2013 www.ti.com Typical Performance Characteristics (continued) Distortion vs. Frequency Distortion vs. Frequency 0 0 AV = +20 AV = +10 RL = 100: -40 -60 RL = 100: -20 DISTORTION (dBc) DISTORTION (dBc) -20 HD2 VS = ±6V, VO = 2VPP -80 HD3 -100 -40 VS = ±6V, -60 -80 VS = ±2.5V, VO = 1VPP -100 -120 VS = ±2.5V, VO = 1VPP -140 100k 1M 10M HD3 -120 100k 100M 1M FREQUENCY (Hz) Figure 34. Figure 35. Distortion vs. Frequency Distortion vs.
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LMH6624 www.ti.com SNOSA42F – NOVEMBER 2002 – REVISED MARCH 2013 Typical Performance Characteristics (continued) Non-Inverting Large Signal Pulse Response Non-Inverting Large Signal Pulse Response VS = ±6V 200 mV/DIV 200 mV/DIV VS = ±2.5V VO = 1VPP AV = +10 RL = 100: VO = 1VPP AV = +20 RL = 100: 10 ns/DIV 10 ns/DIV Figure 40. Figure 41. Non-Inverting Small Signal Pulse Response Non-Inverting Small Signal Pulse Response VS = ±6V 100 mV/DIV 50 mV/DIV VS = ±2.
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LMH6624 SNOSA42F – NOVEMBER 2002 – REVISED MARCH 2013 www.ti.com Typical Performance Characteristics (continued) Input Referred CMRR vs. Frequency Input Referred CMRR vs. Frequency 0 VS = ±6V -10 VIN = 5mVPP -20 -20 -30 -30 CMRR (dB) CMRR (dB) -10 0 VS = ±2.5V -40 AV = +10 -50 -60 VIN = 5mVPP -40 -50 AV = +10 -60 -70 -70 AV = +20 -80 AV = +20 -80 -90 -90 1k 1M 100k 10k 10M 100M 1k Figure 46. Figure 47.
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LMH6624 www.ti.com SNOSA42F – NOVEMBER 2002 – REVISED MARCH 2013 APPLICATION SECTION Figure 50. Non-Inverting Amplifier Configuration INTRODUCTION The LMH6624/LMH6626 are very wide gain bandwidth, ultra low noise voltage feedback operational amplifiers. Their excellent performances enable applications such as medical diagnostic ultrasound, magnetic tape & disk storage and fiber-optics to achieve maximum high frequency signal-to-noise ratios.
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LMH6624 SNOSA42F – NOVEMBER 2002 – REVISED MARCH 2013 www.ti.com Figure 51. Inverting Amplifier Configuration TOTAL INPUT NOISE vs. SOURCE RESISTANCE To determine maximum signal-to-noise ratios from the LMH6624/LMH6626, an understanding of the interaction between the amplifier’s intrinsic noise sources and the noise arising from its external resistors is necessary. Figure 52 describes the noise model for the non-inverting amplifier configuration showing all noise sources.
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LMH6624 www.ti.com SNOSA42F – NOVEMBER 2002 – REVISED MARCH 2013 (3) As seen in Figure 54, eni is dominated by the intrinsic voltage noise (en) of the amplifier for equivalent source resistances below 33.5Ω. Between 33.5Ω and 6.43kΩ, eni is dominated by the thermal noise (et = √(4kT(2Rseq)) of the external resistor. Above 6.43kΩ, eni is dominated by the amplifier’s current noise (in = √(2) inRseq). When Rseq = 464Ω (ie.
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LMH6624 SNOSA42F – NOVEMBER 2002 – REVISED MARCH 2013 www.ti.com SINGLE SUPPLY OPERATION The LMH6624/LMH6626 can be operated with single power supply as shown in Figure 55. Both the input and output are capacitively coupled to set the DC operating point. Figure 55. Single Supply Operation LOW NOISE TRANSIMPEDANCE AMPLIFIER Figure 56 implements a low-noise transimpedance amplifier commonly used with photo-diodes. The transimpedance gain is set by Rf.
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LMH6624 www.ti.com SNOSA42F – NOVEMBER 2002 – REVISED MARCH 2013 (7) LOW NOISE INTEGRATOR The LMH6624/LMH6626 implement a deBoo integrator shown in Figure 58. Positive feedback maintains integration linearity. The LMH6624/LMH6626’s low input offset voltage and matched inputs allow bias current cancellation and provide for very precise integration. Keeping RG and RS low helps maintain dynamic stability.
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LMH6624 SNOSA42F – NOVEMBER 2002 – REVISED MARCH 2013 www.ti.com Figure 60. Low Noise Magnetic Media Equalizer Figure 61. Equalizer Frequency Response LAYOUT CONSIDERATION TI suggests the copper patterns on the evaluation boards listed below as a guide for high frequency layout. These boards are also useful as an aid in device testing and characterization. As is the case with all high-speed amplifiers, accepted-practice RF design technique on the PCB layout is mandatory.
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LMH6624 www.ti.
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LMH6624 SNOSA42F – NOVEMBER 2002 – REVISED MARCH 2013 www.ti.com REVISION HISTORY Changes from Revision E (March 2013) to Revision F • 22 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 Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame retardants (Br or Sb do not exceed 0.1% by weight in homogeneous material) (3) MSL, Peak Temp. - The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature.
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PACKAGE MATERIALS INFORMATION www.ti.com 23-Sep-2013 TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Pins Type Drawing SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant LMH6624MAX/NOPB SOIC D 8 2500 330.0 12.4 6.5 5.4 2.0 8.0 12.0 Q1 LMH6624MF SOT-23 DBV 5 1000 178.0 8.4 3.2 3.2 1.4 4.0 8.0 Q3 LMH6624MF/NOPB SOT-23 DBV 5 1000 178.0 8.4 3.2 3.2 1.4 4.0 8.
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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) LMH6624MAX/NOPB SOIC D 8 2500 367.0 367.0 35.0 LMH6624MF SOT-23 DBV 5 1000 210.0 185.0 35.0 LMH6624MF/NOPB SOT-23 DBV 5 1000 210.0 185.0 35.0 LMH6624MFX SOT-23 DBV 5 3000 210.0 185.0 35.0 LMH6624MFX/NOPB SOT-23 DBV 5 3000 210.0 185.0 35.0 LMH6626MAX/NOPB SOIC D 8 2500 367.0 367.0 35.
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