ltc6404-2 Linear Technology Corporation, ltc6404-2 Datasheet
ltc6404-2
Related parts for ltc6404-2
ltc6404-2 Summary of contents
Page 1
... It draws only 29.8mA, and has a hardware shutdown feature which reduces current consumption to 250μA. The LTC6404-2 is available in a compact 3mm × 3mm 16-pin leadless QFN package and operates over a –40°C to 125°C temperature range. ...
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... LTC6404-2 ABSOLUTE MAXIMUM RATINGS (Note 1) + – Total Supply Voltage ( ................................5.5V Input Voltage , SHDN) (Note 2) ................... V + – ( OCM Input Current , SHDN) (Note 2) .....................±10mA + – ( OCM Output Short-Circuit Duration (Note 3) ............ Indefi nite Output Current (Continuous) + – (OUTF , OUTF ) ...........................±40mA ...
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... LTC6404-2 DC ELECTRICAL CHARACTERISTICS over the full operating temperature range, otherwise specifi cations are OPEN 100Ω 200Ω, R SHDN – )/ defi ned as (V OUTCM OUT OUT ICM SYMBOL PARAMETER V Differential Offset Voltage (Input Referred) OSDIFF Δ ...
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... IL SHDN Input Logic High V IH SHDN Pin Input Impedance R SHDN t Turn-On Time ON t Turn-Off Time OFF LTC6404-2 AC ELECTRICAL CHARACTERISTICS over the full operating temperature range, otherwise specifi cations are OPEN 100Ω 200Ω, R SHDN I F – + – defi ...
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... OS and is not recommended. See Note 3 for more details. Note 12: Since the LTC6404 voltage feedback amplifi er with low output impedance, a resistive load is not required when driving an ADC. Therefore, typical output power is very small. In order to compare the LTC6404-2 with amplifi ...
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... LTC6404-2 TYPICAL PERFORMANCE CHARACTERISTICS Active Supply Current vs Temperature MID-SUPPLY CM OCM 32 2. 27.5 25 –75 –50 – 100 TEMPERATURE (°C) 64042 G01 Common Mode Voltage Offset vs Temperature 10.0 5 REPRESENTATIVE UNITS MID-SUPPLY CM OCM 7 5.0 2.5 0 –2.5 –5.0 –7.5 – ...
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... IN –70 –80 HD2 –90 –100 HD2 HD3 –110 100 0 0.5 1.0 1.5 2.0 DC COMMON MODE INPUT (AT IN+ AND IN– PINS) (V) DIFFERENTIAL INPUT SINGLE-ENDED INPUT LTC6404-2 Small Signal Frequency Response vs Temperature 25° UNFILTERED OUTPUTS MID-SUPPLY –5 CM OCM T = 25°C ...
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... FREQUENCY (MHz) PIN FUNCTIONS SHDN (Pin 1): When SHDN is fl oating or directly tied to V the LTC6404 the normal (active) operating mode. When Pin 1 is pulled a minimum of 2.1V below V LTC6404-2 enters into a low power shutdown state. See Applications Information for more details. + – V ...
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... OCM – 28k 50Ω – V – V – – – OUT LTC6404-2 – (Pins 8, 13): Filtered Output Pins. These + – – , and OUTF have 12pF plus an addi- + and OUTF – (Pins 3, 9, and 12). – OUTF 12pF – ...
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... OUTF IN OUT Figure 1. DC Test Circuit – 100Ω 200Ω OUT – V OUTF + – OUT OUTF LTC6404-2 SHDN 12pF SHDN 1 50Ω 12pF + V V OCM – V – – 50Ω 12pF V OCM 4 – ...
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... The LTC6404-2 can be used as a single ended input to differential output amplifi er differential input to differential output amplifi er. ...
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... VOUT ) is completely independent of input and output common mode voltages, or the voltage at the common mode pin. This makes the LTC6404-2 ideally suited for pre-amplifi cation, level shifting and conversion of single ended signals to differential output signals to drive differential input ADCs. ...
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... V ≈ (V – V OSDIFF(APPARENT) ICM OCM Using the LTC6404 single supply application on a single 5V supply with 1% resistors, and the input common mode grounded, with the V pin biased at mid-supply, OCM the worst case resistor mismatch can induce 22mV of apparent offset voltage. With 0.1% resistors, the worst case apparent offset reduces to 2 ...
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... OUTF 0.1μF Filtering at the output of the LTC6404-2 is often desired 8 64042 F05 + to provide either anti-aliasing or improved signal to noise OUTF + V OUT ratio. To simplify this fi ltering, the LTC6404-2 includes an additional pair of differential outputs (OUTF to zero), the input common voltage is INM + + V – ...
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... Keep in mind, the series resistance also serves to decouple the outputs from load capacitance including the onboard fi lter capacitors. The unfi ltered outputs of the LTC6404-2 are designed to drive 10pF to ground or 5pF differentially, so care should be taken to not lower the effective impedance between ...
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... • • e • nRI plot of this equation, and a plot of the noise generated by the feedback components for the LTC6404-2 is shown in Figure 10 – ncm 16 The LTC6404-2’s input referred voltage noise contributes the equivalent noise of a 140Ω resistor. When the feedback network is comprised of resistors whose values are less than this, the LTC6404-2’ ...
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... Layout Considerations Because the LTC6404 very high speed amplifi er sensitive to both stray capacitance and stray inductance. Three pairs of power supply pins are provided to keep the power supply inductance as low as possible to prevent degradation of amplifi ...
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... ADC (Figure 11 shows an example of this place a discrete R-C fi lter network between the differential unfi ltered outputs of the LTC6404-2 and the input of the ADC to help absorb ) • Δβ the charge transfer required during the ADC sampling process. The capacitance of the fi ...
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... Plastic QFN (3mm × 3mm) (Reference LTC DWG # 05-08-1691) 0.70 ±0.05 PACKAGE OUTLINE 0.25 ±0.05 0.50 BSC 0.75 ± 0.05 (4 SIDES) 1.45 ± 0.10 (4-SIDES) 0.200 REF 0.00 – 0.05 LTC6404-2 BOTTOM VIEW—EXPOSED PAD PIN 1 NOTCH R = 0.20 TYP R = 0.115 OR 0.25 × 45° CHAMFER TYP 15 16 0.40 ± 0. (UD16) QFN 0904 0.25 ± 0.05 ...
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... LTC6404-2 RELATED PARTS PART NUMBER DESCRIPTION LT1809/LT1810 Single/Dual 180MHz, 350V/μs Rail-to-Rail Input and Output Low Distortion Op Amps LTC1992/LTC1992-x Fully Differential Input/Output Amplifi ers LT1994 Low Noise, Low Distortion Fully differential Input/Output Amplifi er/Driver LTC6400-20 1.8GHz Low Noise, Low Distortion ADC Driver for up to ...