Datasheet

ManualsBrandsTEXAS INSTRUMENTS ManualsLinear ICsLinear IC - Op-amp Voltage feedback VSSOP 8

ADC

DAC

LMH6643

LMH6672

BUFFER/FILTER

LINE DRIVER

HYBRID

COUPLER

LMH6622

TELEPHONE LINE

RECEIVE PRE-AMP

ADC

1 : N

LMH6622

www.ti.com

SNOS986D –DECEMBER 2001–REVISED MARCH 2013

LMH6622 Dual Wideband, Low Noise, 160MHz, Operational Amplifiers

Check for Samples: LMH6622

FEATURES

DESCRIPTION

The LMH6622 is a dual high speed voltage feedback

• V

= ±6V, T

= 25°C, Typical Values Unless

operational amplifier specifically optimized for low

Specified

noise. A voltage noise specification of 1.6nV/√Hz, a

• Bandwidth (A

= +2) 160MHz

current noise specification 1.5pA/√Hz, a bandwidth of

• Supply Voltage Range ±2.5V to ±6V+5V to +12

160MHz, and a harmonic distortion specification that

exceeds 90dBc combine to make the LMH6622 an

• Slew Rate 85V/μs

ideal choice for the receive channel amplifier in

• Supply Current 4.3mA/amp

ADSL, VDSL, or other xDSL designs. The LMH6622

• Input Common Mode Voltage −4.75V to +5.7V

operates from ±2.5V to ±6V in dual supply mode and

from +5V to +12V in single supply configuration. The

• Output Voltage Swing (R

= 100Ω) ±4.6V

LMH6622 is stable for A

≥ 2 or A

≤ −1. The

• Input Voltage Nise 1.6nV/√Hz

fabrication of the LMH6622 on TI's advanced VIP10

• Input Current Noise 1.5pA/√Hz

process enables excellent (160MHz) bandwidth at a

current consumption of only 4.3mA/amplifier.

• Linear Output Current 90mA

Packages for this dual amplifier are the 8-lead SOIC

• Excellent Harmonic Distortion 90dBc

and the 8-lead VSSOP.

APPLICATIONS

• xDSL Receiver

• Low Noise Instrumentation Front End

• Ultrasound Preamp

• Active Filters

• Cellphone Basestation

Figure 1. xDSL Analog Front End

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 (24 pages)

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LMH6622 www.ti.com SNOS986D – DECEMBER 2001 – REVISED MARCH 2013 LMH6622 Dual Wideband, Low Noise, 160MHz, Operational Amplifiers Check for Samples: LMH6622 FEATURES DESCRIPTION • The LMH6622 is a dual high speed voltage feedback operational amplifier specifically optimized for low noise. A voltage noise specification of 1.6nV/√Hz, a current noise specification 1.
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LMH6622 SNOS986D – DECEMBER 2001 – 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) (2) ESD Tolerance Human Body Model Machine Model VIN Differential 2kV (3) 200V (3) ±1.2V Supply Voltage (V+ – V−) 13.2V V+ +0.5V, V− −0.
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LMH6622 www.ti.com SNOS986D – DECEMBER 2001 – REVISED MARCH 2013 ±6V Electrical Characteristics (continued) Unless otherwise specified, TJ = 25°C, V+ = 6V, V− = −6V, VCM = 0V, AV = +2, RF = 500Ω, RL = 100Ω. Boldface limits apply at the temperature extremes. Symbol Parameter Conditions Min Typ (1) (2) Max (1) Units Distortion and Noise Response en Input Referred Voltage Noise f = 100kHz 1.6 nV/√Hz in Input Referred Current Noise f = 100kHz 1.
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LMH6622 SNOS986D – DECEMBER 2001 – REVISED MARCH 2013 www.ti.com ±6V Electrical Characteristics (continued) Unless otherwise specified, TJ = 25°C, V+ = 6V, V− = −6V, VCM = 0V, AV = +2, RF = 500Ω, RL = 100Ω. Boldface limits apply at the temperature extremes. Symbol ISC Parameter Output Short Circuit Current IOUT Output Current Conditions Min Typ Sourcing to Ground ΔVIN = 200mV (5), (6) 100 135 Sinking to Ground ΔVIN = −200mV (5), 100 130 (6) (1) Sourcing, VO = +4.3V Sinking, VO = −4.
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LMH6622 www.ti.com SNOS986D – DECEMBER 2001 – REVISED MARCH 2013 ±2.5V Electrical Characteristics (continued) Unless otherwise specified, all limits ensured for TJ = 25°C, V+ = 2.5V, V− = −2.5V, VCM = 0V, AV = +2, RF = 500Ω, RL = 100Ω. Boldface limits apply at the temperature extremes. Symbol Parameter Conditions Min Typ Max Units −1.5 −2.5 +0.01 1.5 2.5 μA 10 15 μA (1) (2) (1) IOS Input Offset Current VCM = 0V IB Input Bias Current VCM = 0V 4.
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LMH6622 SNOS986D – DECEMBER 2001 – REVISED MARCH 2013 www.ti.com Typical Performance Characteristics Current and Voltage Noise vs. Frequency Current and Voltage Noise vs. Frequency 100 100 100 VS = ±6V VOLTAGE 1 1 CURRENT 0.1 10 1 100 1k 10k 100k 1M 0.1 10M VOLTAGE NOISE (nV/ Hz) 10 10 CURRENT NOISE (pA/ Hz) VOLTAGE NOISE (nV/ Hz) VS = ±2.5V 10 10 VOLTAGE 1 1 CURRENT 0.1 10 1 100 Figure 3. Frequency Response vs. Input Signal Level Frequency Response vs.
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LMH6622 www.ti.com SNOS986D – DECEMBER 2001 – REVISED MARCH 2013 Typical Performance Characteristics (continued) Crosstalk vs. Frequency Open Loop Gain and Phase Response 270° 90 80 234° 70 198° GAIN -30°C PHASE 126° 90° 40 54° 30 -30°C PHASE (°) GAIN (dB) 50 CROSSTALK (dB) 162° 60 25°C 20 85°C 25°C 18° -18° 10 85°C -54° 0 -10 1k 10k -90° 100M 500M 10 100k 1M FREQUENCYM (Hz) Figure 8. 0 VS = ±6V, ±2.5V VS = ±2.
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LMH6622 SNOS986D – DECEMBER 2001 – REVISED MARCH 2013 www.ti.com Typical Performance Characteristics (continued) Non-Inverting Small Signal Pulse Response VS = ±2.5V, RL = 100Ω, AV = +2, RF = 500Ω 50mV/DIV Non-Inverting Small Signal Pulse Response VS = ±6V, RL = 100Ω, AV = +2, RF = 500Ω 50mV/DIV 100nS 100nS INPUT INPUT 100mV/DIV 100mV/DIV OUTPUT OUTPUT Figure 14. Figure 15. Non-Inverting Large Signal Pulse Response VS = ±2.
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LMH6622 www.ti.com SNOS986D – DECEMBER 2001 – REVISED MARCH 2013 Typical Performance Characteristics (continued) Harmonic Distortion vs. Frequency Harmonic Distortion vs. Frequency 0 0 VS = ±6V VIN = 1VPP -20 HARMONIC DISTORTION -dBc HARMONIC DISTORTION -dBc VS = ±2.5V AV = +2 RL = 100: -40 -60 HD2 -80 -100 VIN = 1VPP -20 AV = +2 RL = 100: -40 -60 HD2 -80 -100 HD3 HD3 -120 -120 500 0 2000 0 Figure 21. Harmonic Distortion vs. Input Signal Level Harmonic Distortion vs.
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LMH6622 SNOS986D – DECEMBER 2001 – REVISED MARCH 2013 www.ti.com Typical Performance Characteristics (continued) Full Rate ADSL (DMT) Upstream MTPR @ VS = ±2.5V Full Rate ADSL (DMT) Downstream MTPR @ VS = ±2.5V 0 0 VS = ±2.5V -10 VO = 0.407VRMS -20 RF = 500: VS = ±2.5V -10 MTPR (dBc) MTPR (dBc) RL = 437: -40 -50 RL = 437: -30 -40 -60 -70 104.8 106.8 108.8 110.8 -70 551.3 112.8 553.3 555.3 557.3 559.3 561.3 FREQUENCY (kHz) FREQUENCY (kHz) Figure 26. Figure 27.
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LMH6622 www.ti.com SNOS986D – DECEMBER 2001 – REVISED MARCH 2013 Connection Diagram Figure 30. 8-Pin SOIC/VSSOP (Top View) Test Circuits RG 604: RF 604: - - 50: 154: 50: + + 56.7: 50: Figure 31. Non-Inverting Amplifier RG 154: Figure 32. CMRR RG 100: - 100: - PF + 1PF + 1k: Figure 33. Voltage Noise RG = 1Ω for f ≤ 100kHz, RG = 20Ω for f > 100kHz Figure 34. Current Noise RG = 1Ω for f ≤ 100kHz, RG = 20Ω for f > 100kHz + + - VIN RF RG + RL RF VOUT - - + Figure 35.
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LMH6622 SNOS986D – DECEMBER 2001 – REVISED MARCH 2013 www.ti.com POWER SPECTRUM DSL RECEIVE CHANNEL APPLICATIONS UPSTREAM DOWNSTREAM POTS FREQUENCY 4.5kHz 30kHz 135kHz 160kHz 1.1MHz Figure 36. ADSL Signal Description The LMH6622 is a dual, wideband operational amplifier designed for use as a DSL line receiver.
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LMH6622 www.ti.com SNOS986D – DECEMBER 2001 – REVISED MARCH 2013 LMH6672 DAC + IN OUT +VA/2 V1 1/2RS + 1:N VT1 V2 -VA/2 IN OUT DAC - RF - 1/2RL + VTN VS - 1/2RS 1/2RL R1 R2 ADC + +VOUT + R+ LMH6622 R+ + -VOUT ADC - R1 R2 RF Figure 37. ADSL Receive Applications Circuit The two RS resistors are used to provide impedance matching through the 1:N transformer. RS = RL N 2 (1) Where RL is the impedance of the twisted pair line. N is the turns ratio of the transformer.
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LMH6622 SNOS986D – DECEMBER 2001 – REVISED MARCH 2013 www.ti.
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LMH6622 www.ti.com SNOS986D – DECEMBER 2001 – REVISED MARCH 2013 The factor '2 ' appears here because of differential output. DIFFERENTIAL ANALOG-TO-DIGITAL DRIVER LMH6622 + +VOUT/2 1:N x RS RC RIN RF 500: TO ADC 110: RF 500: -VOUT/2 VS + LMH6622 Figure 38. Circuit for Differential A/D Driver The LMH6622 is a low noise, low distortion high speed operational amplifier. The LMH6622 comes in either SOIC-8 or VSSOP-8 packages.
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LMH6622 SNOS986D – DECEMBER 2001 – REVISED MARCH 2013 www.ti.com CIRCUIT LAYOUT CONSIDERATIONS Texas Instruments 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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LMH6622 www.ti.com SNOS986D – DECEMBER 2001 – REVISED MARCH 2013 REVISION HISTORY Changes from Revision C (March 2013) to Revision D • 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 (6) Lead/Ball Finish - Orderable Devices may have multiple material finish options. Finish options are separated by a vertical ruled line. Lead/Ball Finish values may wrap to two lines if the finish value exceeds the maximum column width. Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided.
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PACKAGE MATERIALS INFORMATION www.ti.com 23-Sep-2013 TAPE AND REEL INFORMATION *All dimensions are nominal Device LMH6622MAX/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) LMH6622MAX/NOPB SOIC D 8 2500 367.0 367.0 35.
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