ltc6601-1 Linear Technology Corporation, ltc6601-1 Datasheet
ltc6601-1
Related parts for ltc6601-1
ltc6601-1 Summary of contents
Page 1
... Select between high performance, low power (50% power reduction), and standby modes with the BIAS pin. The LTC6601-1 is available in a compact 4mm × 4mm 16-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. ...
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... LTC6601-1 ABSOLUTE MAXIMUM RATINGS (Note 1) + – Total Supply Voltage ( ...............................5.5V Input Voltage (Any Pin) (Note 2) ..V , BIAS) ..................................±10mA Input Current (V OCM Input Current (Pins 1, 5) (Note 2) ........................±20mA Input Current (Pins 2, 4) (Note 2) ........................±30mA Input Current (Pins 6, 20) (Note 2) ......................±15mA Input Current (Pins 10, 16, 17, 18, 19) (Note 2) ................................................................± ...
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... OCM BIAS = BIAS Pin Floating BIAS Pin Floating LTC6601 mid-supply, BIAS tied to V INCM OCM + – is defi ned as (V – OUTCM + – – defi ned as (V OUT INDIFF INP MIN ...
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... LTC6601-1 DC ELECTRICAL CHARACTERISTICS temperature range, otherwise specifi cations are 100k. The fi lter is confi gured for a gain of 1 unless otherwise noted. V LOAD BAL + – )/ defi ned as (V OUT OUT INCM Figure 1. SYMBOL PARAMETER V Output Voltage, High, Either Output Pin ...
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... TEST V = 600mV , f = 50MHz IN P-P TEST BW = 100MHz BW = 20MHz BW = 100MHz BW = 20MHz HD2, Single-Ended Input HD3, Single-Ended Input HD2, Differential Input HD3, Differential Input LTC6601 mid-supply tied to V INCM OCM BIAS + – is defi ned as (V – defi ned as (V OUTCM – defi ...
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... LTC6601-1 ELECTRICAL CHARACTERISTICS Note 1: Stresses beyond those listed under the Absolute Maximum Ratings may cause permanent damage to the device. Exposure to any Absolute Maximum Rating condition for extended periods may affect device reliability and lifetime. Note 2: All pins are protected by steering diodes to either supply. If any pin is driven beyond the part’ ...
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... MID-SUPPLY INCM OCM 0.75 + BIAS PIN TIED REPRESENTATIVE UNITS 0.50 0.25 0.00 –0.25 –0.50 –0.75 + –1.00 –50 – TEMPERATURE (°C) LTC6601-1 Shutdown Supply Current vs Temperature and Supply Voltage 0 MID-SUPPLY INCM OCM – BIAS PIN TIED TO V 0.7 5V 0.6 5V 0.5 0.4 3V 2.7V 0.3 0.2 0.1 0 –50 –25 ...
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... LTC6601-1 TYPICAL PERFORMANCE CHARACTERISTICS High Performance Common Mode V vs Temperature – MID-SUPPLY INCM OCM + BIAS PIN TIED REPRESENTATIVE UNITS –10 –50 – 100 TEMPERATURE (°C) 66011 G10 BIAS Pin Input Resistance vs Temperature 200 ...
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... Response BIAS PIN –1 –2 –3 V –4 OUTDIFF –5 100 TIME (μs) LTC6601 MID-SUPPLY OCM 3 2 ϕ – ϕ MAX AVERAGE 1 0 –1 –2 ϕ – ϕ MIN AVERAGE –3 – 100 FREQUENCY (MHz) ...
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... LTC6601-1 TYPICAL PERFORMANCE CHARACTERISTICS Differential Output Noise 100 FIGURE 2 INTEGRATED NOISE, BIAS PIN FLOATING INTEGRATED NOISE, + BIAS TIED SPECTRAL DENSITY, BIAS PIN FLOATING SPECTRAL DENSITY, + BIAS TIED 0.001 0.01 0 FREQUENCY (MHz) 66011 G27 % Change Temperature O 0.5 0 –0.5 – ...
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... AVERAGE = 10.55pF STD. DEV = 0.03pF 350 300 250 200 150 100 50 0 0.987 0.991 0.996 1.000 1.005 NORMALIZED CAPACITANCE LTC6601-1 Normalized Feedback 400Ω Resistor Trim 1000 AVERAGE = 400.01Ω 900 STD. DEV = 0.87Ω 800 700 600 500 400 300 200 100 0 1 ...
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... LTC6601-1 PIN FUNCTIONS (Refer to the Block Diagram IN1 , IN2 , IN4 (Pins 2, 1, 20): Input to a trimmed 100Ω, 200Ω, 400Ω resistor which feeds a noninverting summing node. Can accept an input signal, be fl oated or tied to OUT For best performance, stray capacitance should be kept as low as possible by keeping printed circuit connections as short and direct as possible ...
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... Exposed Pad (Pin 21): Always tie the underlying Exposed – Pad to V (Pin 13). If split supplies are used, do not tie the pad to ground. Tie – . For best LTC6601 either of these pins are + , a re- – . 66011f 13 ...
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... LTC6601-1 BLOCK DIAGRAM + 200Ω IN2 1 + 100Ω IN1 2 – 2.3V 180k 60k BIAS 3 180k – 100Ω IN1 4 – 200Ω IN2 IN4 C5 C6 16.1pF 33.3pF 400Ω 81.5pF 400Ω 10.55pF 21.1pF 48.2pF 125Ω + BIAS 125Ω ...
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... Figure 1. DC Test Circuit LTC6601 INP + 3 – V INM LTC6601 – 25Ω V OUT BAL 0.1μF 0.1μF – OUT(CM) 0.1μ BAL OCM 3nF 25Ω V OUT 11 66011 F01 1μ ...
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... LTC6601-1 APPLICATIONS INFORMATION FUNCTIONAL DESCRIPTION The LTC6601 is designed to make the implementation of high frequency fully-differential fi ltering functions very easy. A very low noise amplifi surrounded by 8 precision matched resistors and 12 precision matched capacitors so that a myriad of fi lter transfer functions limited only by possible combinations and imagination can be confi ...
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... The low frequency gain to V from V OUTDIFF V OUTDIFF The differential output voltage (V independent of input and output common mode voltages, or the voltage at the common mode pin. This makes the – LTC6601-1 ), the LTC6601 will be placed into a low power + and OUT is simply – – ...
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... LTC6601-1 APPLICATIONS INFORMATION LTC6601 ideally suited for pre-amplifi cation, level shift- ing and conversion of single-ended signals to differential output signals for driving differential input ADCs. INPUT IMPEDANCE Calculating the low frequency input impedance of the LTC6601 depends on how the inputs are driven (whether they are driven from a single-ended or a differential source) ...
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... Competing + = devices often specify noise referred to the inputs of the OUT amplifi er. The input referred voltage noise of the LTC6601-1 pin sits in the is 2.1nV/√Hz. This level is one of the lowest available for OCM amplifi ers in this speed and power range. ...
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... Table 1 lists the amplifi er input referred noise for the LTC6601-1. Tables 2 to10 list the noise referred to the input pins of the IC for common confi gurations of the LTC6601-1. To determine the spot noise at the output, simply multiply the noise by the Gain = R2/R1. To estimate the integrated noise at the output, multiply the noise by the gain, and the square root of the noise bandwidth ...
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... C0G multilayer ceramic capacitor – OUT 0.1μF + 1μF – OCM 10nF + R V OUT • ( • C2 Figure 6. Interfacing the LTC6601 to A/D Converters LTC6601-1 C1 CONTROL D15 + • • – GND CM 1μF 2.2μF C1 66011 F06 3.3V 1μF 66011f 21 ...
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... APPLICATIONS INFORMATION A GALLERY OF BASIC FILTER TOPOLOGIES Tables 2 through 10 list (sorted by Gain) a hundred possible fi lter topologies that can be easily implemented with the LTC6601. The tables also list the LTC6601-1 approximate midband (1MHz) spot noise e referred to the input re- in sistor, R1 (with the BIAS pin pulled to V Table 2. Gain of 7 Filter Confi ...
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... LTC6601-1 R2 (Ω) C1 (pF) C2 (pF) 400.00 48.2 81.5 400.00 48.2 97.6 400.00 58.75 97.6 400.00 58.75 114.8 400.00 69.3 97.6 400.00 69.3 114.8 400.00 79.85 114.8 400.00 69.3 130.9 400.00 79.85 130.9 R2 (Ω) C1 (pF) C2 (pF) (nV/√Hz) 200 ...
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... LTC6601-1 APPLICATIONS INFORMATION Table 7. Gain of 2 Filter Confi gurations GAIN V (MHz) O 2.0 6.021 16.06 2.0 6.021 14.55 2.0 6.021 14.68 2.0 6.021 13.29 2.0 6.021 12.24 2.0 6.021 12.26 2.0 6.021 11.29 2.0 6.021 10.29 2.0 6.021 10.51 2.0 6.021 10.57 2.0 6.021 9.47 2.0 6.021 9.85 2.0 6.021 8.82 2.0 6.021 8.65 2.0 6.021 8.06 2.0 6.021 7.43 Table 8. Gain of 1.667 Filter Confi gurations GAIN V (MHz) O 1.667 4.437 19 ...
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... LTC6601-1 R2 (Ω) C1 (pF) C2 (pF) 133.33 48.2 81.5 133.33 58.75 81.5 133.33 48.2 97.6 133.33 58.75 97.6 133.33 69.3 97.6 133.33 58.75 114.8 133.33 58.75 130.9 133.33 69.3 114.8 133.33 79.85 114.8 133.33 69.3 130.9 133 ...
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... LTC6601 400Ω 4 – Figure 7. Pin-Strap Hookup for a Particular LTC6601 – LTC6601 – ...
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... R2 100Ω LTC6601 200Ω Figure 8. Pin-Strap Hookup for a Particular LTC6601 48.2pF LTC6601 69.3pF Figure 9. Pin-Strap Hookup for a Particular C1 ...
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... LTC6601 – LTC6601 81.5pF LTC6601 97.6pF Figure 10. Pin-Strap Hookup for a Particular 114.8pF – ...
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... LTC6601 OUT(DIFF GAIN = 6dB f = 16.06MHz 0.868 LTC6601 OUT(DIFF GAIN = 2.5dB f = 19.67MHz 0.841 Figure 11. Basic 2nd Order Filter Confi gurations LTC6601-1 pin bypass and power supply bypass OCM ...
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... GAIN = 9.54dB f = 9.85MHz 0.544 30 simplicity, V are not shown LTC6601 OUT(DIFF GAIN = 12dB f = 11.36MHz 0.834 LTC6601 OUT(DIFF GAIN = 14dB f = 11.36MHz 0.614 LTC6601 OUT(DIFF ...
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... If the Q value varies of the three 400Ω, 200Ω and 100Ω pairs). frequency var- 3dB 3dB = 6.954MHz. O LTC6601-1 frequency is 3dB of step 1 and the specifi calculate the O 3dB EXT = 5MHz is 0 ...
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... LTC6601-1 APPLICATIONS INFORMATION R1 V IN(DIFF R4A + R4B + C3A || C3B f • 6089 • 3dB 0.2236 • f • 559 • C1• R2 • V OUT(DIFF) = – V IN(DIFF OUT(DIFF) GAIN = – V IN(DIFF • • R2 • R3 • C1• • ...
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... F14a GAIN = 3 6.964MHz 0. 5MHz –3dB 30 –30 –60 –90 –120 100M 66011 F14b LTC6601 LTC6601 OUT(DIFF) – 6.964MHz O = 5MHz –3dB Passband Phase and Group Delay PHASE 0 50 GROUP DELAY 100k ...
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... IN = 175.6 IN(DIFF) 4 – 12.4Ω 66011 F15a GAIN = 4. 7.971MHz 0. 7.5MHz –3dB 100M 66011 F15b LTC6601 OUT(DIFF) 4 – GAIN = 3. 7.971MHz 0. 7.5MHz –3dB V OUT(DIFF) Passband Phase and Group Delay 30 PHASE 0 –30 – ...
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... GAIN = 2.6 66011 F16a f = 11.27MHz 0. 10MHz –3dB 30 –30 –60 –90 –120 100M 66011 F16b LTC6601 LTC6601 OUT(DIFF) – 10MHz OUT(DIFF) Passband Phase and Group Delay 0 PHASE GROUP DELAY 100k 4M 8M ...
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... F17a GAIN = 2 16.04MHz 0. 15MHz –3dB 30 –30 –60 –90 –120 100M 66011 F17b LTC6601 OUT(DIFF) – 16.04MHz = 15MHz OUT(DIFF) Passband Phase and Group Delay PHASE GROUP DELAY 100k ...
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... DC1251A demonstration circuit). The DC1251A has SMA connectors for the differential input and output of the LTC6601- board 106MHz lowpass RC fi lters the LTC6601-1 output. DC12351A Top Silk Screen ...
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... LTC6601-1 APPLICATIONS INFORMATION 38 66011f ...
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... UF Package 20-Lead Plastic QFN (4mm × 4mm) (Reference LTC DWG # 05-08-1710) 0.70 0.05 PACKAGE OUTLINE 0.25 0.05 0.50 BSC 0.75 0.05 (4 SIDES) 2.45 0.10 (4-SIDES) 0.200 REF 0.00 – 0.05 LTC6601-1 BOTTOM VIEW—EXPOSED PAD PIN 1 NOTCH R = 0.115 R = 0.30 TYP TYP 19 20 0.38 0. (UF20) QFN 10-04 0.25 0.05 0.50 BSC ...
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... Dual, Matched Lowpass Filter LTC6605-X Dual, Matched Lowpass Filter 40 Linear Technology Corporation 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 FAX: (408) 434-0507 ● 4th Order, 10MHz, Lowpass Filter with 12dB Gain LTC6601 49.9Ω 4 – – ...