LTC6405CUD#PBF Linear Technology, LTC6405CUD#PBF Datasheet

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... The LTC6405 is available in a compact 3mm × 3mm 16-pin leadless QFN package, as well as an 8-lead MSOP package, and operates over a –40°C to 85°C temperature range. L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. 200Ω ...

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... LEAD FREE FINISH TAPE AND REEL LTC6405CMS8E#PBF LTC6405CMS8E#TRPBF LTC6405IMS8E#PBF LTC6405IMS8E#TRPBF LTC6405CUD#PBF LTC6405CUD#TRPBF LTC6405IUD#PBF LTC6405IUD#TRPBF Consult LTC Marketing for parts specifi ed with wider operating temperature ranges. *The temperature grade is identifi label on the shipping container. For more information on lead free part marking, go to: This product is only offered in trays ...

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DC ELECTRICAL CHARACTERISTICS operating temperature range, otherwise specifi cations are at T circuit component values in Figure 1 used, unless otherwise noted defi ned )/2. V ICM +IN –IN OUTDIFF SYMBOL PARAMETER V ...

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LTC6405 DC ELECTRICAL CHARACTERISTICS operating temperature range, otherwise specifi cations are at T circuit component values in Figure 1 used, unless otherwise noted defi ned )/2. V ICM +IN –IN OUTDIFF SYMBOL PARAMETER ...

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ELECTRICAL CHARACTERISTICS Note 1: Stresses beyond those listed under 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. , SHDN and V Note ...

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LTC6405 TYPICAL PERFORMANCE CHARACTERISTICS Differential Input Referred Offset Voltage vs Temperature 1 0 2.5V OCM 0 2.5V ICM 200Ω 0.4 FIVE REPRESENTATIVE UNITS 0.2 0 –0.2 ...

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TYPICAL PERFORMANCE CHARACTERISTICS Input Noise Density vs Frequency 100 2.5V ICM 100 1k 10k 100k 1M 10M FREQUENCY (Hz) 6405 G07 Differential Output Impedance vs Frequency 1000 V ...

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LTC6405 TYPICAL PERFORMANCE CHARACTERISTICS Small Signal Step Response +OUT –OUT 6405 G13 10ns/DIV 200 2. 1.8pF OCM ICM 400 C = ...

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TYPICAL PERFORMANCE CHARACTERISTICS Harmonic Distortion vs Frequency – 2.5V –40 OCM ICM V = OPEN (2.8V) TIP – 800 , LOAD OUTDIFF P-P DIFFERENTIAL INPUTS –60 –70 ...

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LTC6405 TYPICAL PERFORMANCE CHARACTERISTICS Frequency Response vs Load Capacitance 10pF 0pF L – – 2.5V OCM ICM R = 400 LOAD –30 R ...

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PIN FUNCTIONS (MSOP/QFN) V (Pin 2/Pin 4): Output Common Mode Reference OCM Voltage. The voltage on V sets the output common OCM mode voltage level (which is defi ned as the average of the voltages on the +OUT and –OUT ...

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LTC6405 BLOCK DIAGRAMS SHDN – V – OCM 4 12 LTC6405 Block Diagram/Pinout in MSOP Package – SHDN +IN V – 37k ...

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APPLICATIONS INFORMATION Functional Description The LTC6405 is a small outline, wideband, low noise, and low distortion fully-differential amplifi er with accurate output phase balancing. The LTC6405 is optimized to drive low voltage, single-supply, differential input analog- to-digital converters (ADCs). The ...

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LTC6405 APPLICATIONS INFORMATION The outputs (+OUT and –OUT) of the LTC6405 are capable of swinging from close-to-ground to typically 1V below + V . They can source or sink up to approximately 60mA of current. Each output is designed to ...

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APPLICATIONS INFORMATION General Amplifi er Applications As levels of integration have increased and correspond- ingly, system supply voltages decreased, there has been a need for ADCs to process signals differentially in order to maintain good signal to noise ratios. These ...

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LTC6405 APPLICATIONS INFORMATION In general, the degree of feedback pair mismatch is a source of common mode to differential conversion of both signals and noise. Using 1% resistors or better will mitigate most problems, and will provide about 34dB worst ...

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APPLICATIONS INFORMATION Input Common Mode Voltage Range The LTC6405’s input common mode voltage (V defi ned as the average of the two input voltages the inputs to the actual op amp, the range extends –IN – ...

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LTC6405 APPLICATIONS INFORMATION Output Common Mode Voltage Range The output common mode voltage is defi ned as the aver- age of the two outputs +OUT = V = –OUT V OUTCM OCM 2 The V pin sets ...

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APPLICATIONS INFORMATION The outputs of the LTC6405 are designed to drive 5pF to ground, so care should be taken to not lower the effec- tive impedance between +OUT and +OUTF or –OUT and –OUTF below 15Ω. To decrease fi lter ...

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LTC6405 APPLICATIONS INFORMATION The LTC6405’s input referred voltage noise contributes the equivalent noise of a 155Ω resistor. When the feedback network is comprised of resistors whose values are less than this, the LTC6405’s output noise is voltage noise dominant (see ...

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APPLICATIONS INFORMATION Interfacing the LTC6405 to A/D Converters Rail-to-rail input and fast settling time make the LTC6405 ideal for interfacing to low voltage, single supply, differ- ential input ADCs. The sampling process of ADCs create a sampling glitch caused by ...

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LTC6405 TYPICAL APPLICATION Attenuating and Level Shifting a Single-Ended ±5V Signal SINE WAVE (10V ) P-P CENTERED AT 0V PACKAGE DESCRIPTION 2.794 ± 0.102 (.110 ± .004) 5.23 2.083 ± 0.102 (.206) (.082 ± .004) MIN 0.65 ...

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... ON THE TOP AND BOTTOM OF PACKAGE Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no representa- tion that the interconnection of its circuits as described herein will not infringe on existing patent rights. UD Package 16-Lead Plastic QFN (3mm × ...

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... R7 R9 49.9 10 10dBm C6 LTC2249 R8 R10 4.7pF 14-BIT ADC 49 4.7pF V = 1.5V OCM = 2V 4V 10V/ 12.3dB/14.5dB 1MHz: –94dBc, 13mA, P-P = 20dB/26dB V = 20dB/26dB V = 6dB/A = 12dB/A = 20dB 18.6dB/15dB/12.4dB 1008 REV A • PRINTED IN USA © LINEAR TECHNOLOGY CORPORATION 2008 6405 TA02 80MHz SAMPLE CLOCK = 1, –1, V 6405fa ...