PDF LTC6601-2 Data sheet ( Hoja de datos )

Número de pieza	LTC6601-2
Descripción	Filter/ADC Driver
Fabricantes	Linear Technology
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No Preview Available ! LTC6601-2www.DataSheet4U.com Low Power, Low Distortion, 5MHz to 27MHz, Pin Conﬁgurable Filter/ADC Driver FEATURES DESCRIPTION n Pin Conﬁgurable Gain and Filter Response Up to 27MHz n Low Power: 16mA at 3V n Low Distortion (2VP-P) 1MHz: –96dBc 2nd, –112dBc 3rd 10MHz: –65dBc 2nd, –78dBc 3rd n Few External Components Required n Resistors Trimmed to 0.5% Accuracy Typical n Capacitors Trimmed to 0.5% Accuracy Typical n Adjustable Output Common Mode Voltage n Rail-to-Rail Output Swing n Power Conﬁgurability and Low Power Shutdown n Tiny 0.75mm 20-Lead (4mm × 4mm) QFN Package APPLICATIONS n Differential A/D Converter Driver n Antialiasing/Reconstruction Filter n Single-Ended to Differential Conversion/Ampliﬁcation n Low Voltage, Low Noise, Differential Signal Processing n Common Mode Voltage Translation n Portable Instrumentation The LTC®6601-2 is a low power, low distortion, very easy-to-use fully differential 2nd order active broadband RC ﬁlter and driver. On-chip resistors, capacitors, and ampliﬁer bandwidth are trimmed to provide consistent and repeatable ﬁlter characteristics. The ﬁlter characteristics are pin-strap conﬁgurable. Cutoff frequencies range from 5MHz to 27MHz. Gain is pin-strap programmable between –17dB and +17dB. A three-state BIAS pin is provided to adjust ampliﬁer power consumption. Select between low power (50% power reduction), high performance and standby modes with the BIAS pin. The LTC6601 family comes in two options which trade off distortion and noise. The LTC6601-2 offers the lowest distortion at high frequencies. The LTC6601-1 is conﬁg- ured for lowest noise. Both are available in pin-compatible packages. The LTC6601-2 is available in a compact 4mm × 4mm 20-pin leadless QFN package. L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. Protected by U.S. Patents including 6271719. TYPICAL APPLICATION Distortion Comparison Between LTC6601-1 and LTC6602-2 15MHz Filter, Single-Ended Input, Low Power Mode 25MHz Filter, Single-Ended Input, Low Power Mode –50 –40 –60 –70 –80 –90 –100 –110 –120 1 LTC6601-1 HD2 LTC6601-2 HD2 LTC6601-1 HD3 LTC6601-2 HD3 10 FREQUENCY (MHz) 100 66012 TA01a –50 –60 –70 –80 –90 –100 –110 –120 1 LTC6601-1 HD2 LTC6601-2 HD2 LTC6601-1 HD3 LTC6601-2 HD3 10 FREQUENCY (MHz) 100 66012 TA01b 66012f 1 1 page LTC6601-2www.DataSheet4U.com AC ELECTRICAL CHARACTERISTICS The l denotes the speciﬁcations which apply over the full operating temperature range, otherwise speciﬁcations are at ﬂoating, unless otherwise noted. (See Figure 2 for TA = 25°C. the AC test Vco+ n=ﬁ3gVu,raVt–io=n0.)V,VVSINisCMde=ﬁnVeOdCMas=(mV+id–-sVu–p).plVy,OUVTBCIAMSiissdteieﬁdnetod V+ as or (VOUT+ + VOUT–)/2. VICM is deﬁned as (VINP + VINM)/2. VOUTDIFF is deﬁned as (VOUT+ – VOUT–). VINDIFF is deﬁned as (VINP – VINM). SYMBOL GAIN PARAMETER Filter Gain, See Figure 2, BIAS Pin Floating (Remaining AC Measurements Relative to 1MHz) PHASE Filter Phase, See Figure 2, BIAS Pin Floating NOISE SNR Output Noise, See Figure 2, BIAS Pin Floating BIAS Pin Floating Distortion VIN = 2VP-P, 10MHz, BIAS Pin Floating fO TC GAIN Cutoff Frequency Temperature Coefﬁcient Filter Gain, See Figure 2, BIAS Pin Tied to V+, AC Gain Measurements Relative to 1MHz PHASE Filter Phase, See Figure 2, BIAS Pin Tied to V+ NOISE SNR Wide Band Output Noise, 14.45MHz Cutoff, BIAS Pin Tied to V+ BIAS Pin Tied to V+ DISTORTION VIN = 2VP-P, 10MHz, BIAS Pin Tied to V+ fO TC Cutoff Frequency Temperature Coefﬁcient CONDITIONS ΔVIN = ±0.25V, fTEST = DC (Note 14) VIN = 600mVP-P, fTEST = 1MHz VIN = 600mVP-P, fTEST = 2MHz VIN = 600mVP-P, fTEST = 5MHz VIN = 600mVP-P, fTEST = 10MHz VIN = 600mVP-P, fTEST = 14.45MHz VIN = 600mVP-P, fTEST = 20MHz VIN = 600mVP-P, fTEST = 50MHz ΔVIN = ±0.25V, fTEST = DC VIN = 600mVP-P, fTEST = 1MHz VIN = 600mVP-P, fTEST = 2MHz VIN = 600mVP-P, fTEST = 5MHz VIN = 600mVP-P, fTEST = 10MHz VIN = 600mVP-P, fTEST = 14.45MHz VIN = 600mVP-P, fTEST = 20MHz VIN = 600mVP-P, fTEST = 50MHz BW = 100MHz BW = 20MHz BW = 100MHz BW = 20MHz HD2, Single-Ended Input HD3, Single-Ended Input HD2, Differential Input HD3, Differential Input ΔVIN = ±0.25V, fTEST = DC (Note 14) VIN = 600mVP-P, fTEST = 1MHz VIN = 600mVP-P, fTEST = 2MHz VIN = 600mVP-P, fTEST = 5MHz VIN = 600mVP-P, fTEST = 10MHz VIN = 600mVP-P, fTEST = 14.45MHz VIN = 600mVP-P, fTEST = 20MHz VIN = 600mVP-P, fTEST = 50MHz ΔVIN = ±0.25V, fTEST = DC VIN = 600mVP-P, fTEST = 1MHz VIN = 600mVP-P, fTEST = 2MHz VIN = 600mVP-P, fTEST = 5MHz VIN = 600mVP-P, fTEST = 10MHz VIN = 600mVP-P, fTEST = 14.45MHz VIN = 600mVP-P, fTEST = 20MHz VIN = 600mVP-P, fTEST = 50MHz BW = 100MHz BW = 20MHz BW = 100MHz BW = 20MHz HD2, Single-Ended Input HD3, Single-Ended Input HD2, Differential Input HD3, Differential Input MIN TYP MAX UNITS l –0.25 ±0.05 0.25 l0 l –0.08 0.02 0.12 l –0.01 0.11 0.23 l –0.54 –0.34 –0.14 l –3.00 –2.50 –2.00 l –7.55 –6.55 –5.55 l –23.55 –21.55 –19.55 dB dB dB dB dB dB dB dB l0 l –6.0 –5.5 –4.8 l –12.5 –11.3 –10.1 l –31.8 –29.3 –26.8 l –70.1 –65.2 –60.1 l –103.5 –97.5 –91.5 l –130.7 –125.1 –120.7 l –173.6 Deg Deg Deg Deg Deg Deg Deg Deg 154 μVRMS 135 μVRMS 73 dB 74 dB –60 dBc –79 dBc –65 dBc –77 dBc –120 ppm/°C l –0.25 ±0.05 0.25 l0 l –0.08 0.02 0.12 l –0.01 0.11 0.23 l –0.54 –0.34 –0.14 l –2.75 –2.35 –1.95 l –7.14 –6.24 –5.34 l –23.70 –21.70 –19.70 dB dB dB dB dB dB dB dB l0 l –6.0 –5.4 –4.8 l –12.2 –11 –9.8 l –31.2 –28.7 –26.2 l –68.8 –63.8 –58.8 l –101.5 –95.5 –89.5 l –128.4 –123.4 –118.4 l –169.3 Deg Deg Deg Deg Deg Deg Deg Deg 108 μVRMS 97 μVRMS 76 dB 77 dB –67.5 –90 –70 –90 dBc dBc dBc dBc –120 ppm/°C 66012f 5 5 Page TYPICAL PERFORMANCE CHARACTERISTICS LTC6601-2www.DataSheet4U.com Normalized 200Ω Resistor Trim 1000 AVERAGE = 200Ω 900 STD. DEV = 0.37Ω 800 700 600 500 400 300 200 100 0 0.99 0.994 0.998 1.002 1.006 1.01 NORMALIZED RESISTANCE 66012 G36 Normalized Input 400Ω Resistor Trim 900 AVERAGE = 400.01Ω 800 STD. DEV = 1.0Ω 700 600 500 400 300 200 100 0 0.99 0.994 0.998 1.002 1.006 1.01 NORMALIZED RESISTANCE 66012 G37 Normalized Feedback 400Ω Resistor Trim 1000 AVERAGE = 400.01Ω 900 STD. DEV = 0.87Ω 800 700 600 500 400 300 200 100 0 0.99 0.994 0.998 1.002 1.006 1.01 NORMALIZED RESISTANCE 66012 G38 Normalized 21.1pF Capacitor Trim 1200 AVERAGE = 21.1pF STD. DEV = 0.07pF 1000 800 600 400 200 0 0.984 0.990 0.997 1.003 1.009 1.015 NORMALIZED CAPACITANCE 66012 G39 Normalized 33.3pF Capacitor Trim 1000 AVERAGE = 33.3pF 900 STD. DEV = 0.09pF 800 700 600 500 400 300 200 100 0 0.988 0.993 0.999 1.005 1.010 1.016 NORMALIZED CAPACITANCE 66012 G40 Normalized 48.2pF Capacitor Trim 1200 AVERAGE = 48.2pF STD. DEV = 0.08pF 1000 800 600 400 200 0 0.992 0.995 0.998 1.001 1.004 1.007 1.010 NORMALIZED CAPACITANCE 66012 G41 Normalized 81.5pF Capacitor Trim 1000 AVERAGE = 81.5pF 900 STD. DEV = 0.1pF 800 700 600 500 400 300 200 100 0 0.993 0.996 0.999 1.002 1.004 1.007 1.010 NORMALIZED CAPACITANCE 66012 G42 Normalized 10.55pF Capacitor Trim 400 AVERAGE = 10.55pF 350 STD. DEV = 0.03pF 300 250 200 150 100 50 0 0.987 0.991 0.996 1.000 1.005 1.009 1.014 NORMALIZED CAPACITANCE 66012 G43 Normalized 16.1pF Capacitor Trim 350 AVERAGE = 16.1pF STD. DEV = 0.05pF 300 250 200 150 100 50 0 0.988 0.992 0.995 0.999 1.003 1.006 1.010 1.014 NORMALIZED CAPACITANCE 66012 G44 66012f 11 11 Page

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