ltc1746cfw-trpbf Linear Technology Corporation, ltc1746cfw-trpbf Datasheet
ltc1746cfw-trpbf
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ltc1746cfw-trpbf Summary of contents
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... Msps: LTC1742 (14-Bit), LTC1741 (12-Bit) 80 Msps: LTC1748 (14-Bit), LTC1747 (12-Bit) U APPLICATIO S Telecommunications Medical Imaging Receivers Base Stations Spectrum Analysis Imaging Systems , LTC and LT are registered trademarks of Linear Technology Corporation. W BLOCK DIAGRA 25Msps, 14-Bit ADC with a 1V Differential Input Range + DIFFERENTIAL ANALOG INPUT – ...
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... OUT(REF) CONDITIONS 4.75V V 5.25V DD Sample Mode ENC < ENC Hold Mode ENC > ENC – + 1.0V < < 3. INFORMATION ORDER PART TOP VIEW NUMBER OGND LTC1746CFW 46 D13 45 D12 LTC1746IFW 44 D11 D10 OGND 37 GND 36 GND 35 D6 ...
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ACCURACY otherwise specifications are SYMBOL PARAMETER SNR Signal-to-Noise Ratio SFDR Spurious Free Dynamic Range S/( Signal-to-(Noise + Distortion) Ratio THD Total Harmonic Distortion IMD Intermodulation Distortion ...
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LTC1746 U U DIGITAL I PUTS A D DIGITAL OUTPUTS operating temperature range, otherwise specifications are at T SYMBOL PARAMETER V High Level Input Voltage IH V Low Level Input Voltage IL I Digital Input Current IN C Digital Input ...
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W U TYPICAL PERFOR A CE CHARACTERISTICS Typical INL 1.0 0.5 0 –0.5 –1.0 0 4000 8000 12000 16000 CODE 1746 G01 Nonaveraged, 32768 Point FFT, Input Frequency = 5MHz, 2V Range 0 –10 –20 –30 –40 –50 –60 –70 ...
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LTC1746 W U TYPICAL PERFOR A CE CHARACTERISTICS Grounded Input Histogram 25000 20000 15000 10000 5000 0 8167 8168 8169 8170 8171 8172 CODE 1746 G10 SNR vs Input Frequency and Amplitude 3.2V Range 80 –1dBFS 75 –6dBFS 70 65 ...
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W U TYPICAL PERFOR A CE CHARACTERISTICS 2nd and 3rd Harmonic vs Input Frequency, 3.2V Range, –1dB –30 –50 –70 3RD HARMONIC –90 2ND HARMONIC –110 –130 100 INPUT FREQUENCY ...
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LTC1746 CTIO S SENSE (Pin 1): Reference Sense Pin. Ground selects 1V. V selects 1.6V. Greater than 1V and less than DD 1.6V applied to the SENSE pin selects an input range ...
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DIAGRA N ANALOG INPUT t 3 ENCODE t 6 DATA t 5 CLKOUT DATA CTIO AL BLOCK DIAGRA + DIFFERENTIAL ANALOG INPUT – ...
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LTC1746 U U APPLICATIO S I FOR ATIO DYNAMIC PERFORMANCE Signal-to-Noise Plus Distortion Ratio The signal-to-noise plus distortion ratio [ D)] is the ratio between the RMS amplitude of the fundamental input frequency and the RMS amplitude ...
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U U APPLICATIO S I FOR ATIO CONVERTER OPERATION As shown in Figure 1, the LTC1746 is a CMOS pipelined multistep converter. The converter has four pipelined ADC stages; a sampled analog input will result in a digitized value five ...
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LTC1746 U U APPLICATIO S I FOR ATIO When ENC is low, the analog input is sampled differentially directly onto the input sample-and-hold capacitors, inside the “Input S/H” shown in the block diagram. At the instant that ENC transitions from ...
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U U APPLICATIO S I FOR ATIO Input Drive Impedance As with all high performance, high speed ADCs the dy- namic performance of the LTC1746 can be influenced by the input drive circuitry, particularly the second and third harmonics. Source ...
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LTC1746 U U APPLICATIO S I FOR ATIO Reference Operation Figure 5 shows the LTC1746 reference circuitry consisting of a 2.35V bandgap reference, a difference amplifier and switching and control circuit. The internal voltage refer- ence can be configured for ...
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U U APPLICATIO S I FOR ATIO Input Range The input range can be set based on the application. For oversampled signal processing in which the input fre- quency is low (<10MHz), the largest input range will provide the best ...
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LTC1746 U U APPLICATIO S I FOR ATIO Any noise present on the encode signal will result in additional aperture jitter that will be RMS summed with the inherent ADC aperture jitter. In applications where jitter is critical (high input ...
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U U APPLICATIO S I FOR ATIO Output Loading As with all high speed/high resolution converters the digital output loading can affect the performance. The digital outputs of the LTC1746 should drive a minimal capacitive load to avoid possible interaction ...
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LTC1746 U U APPLICATIO S I FOR ATIO High quality ceramic bypass capacitors should be used at the REFHA, REFHB, REFLA and REFLB pins as DD, CM shown in the block diagram on the front page of ...
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... DIMENSIONS DO NOT INCLUDE INTERLEAD FLASH. INTERLEAD FLASH SHALL NOT EXCEED .254mm (.010") PER SIDE 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 represen- tation that the interconnection of its circuits as described herein will not infringe on existing patent rights. ...
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... Pin Compatible with the LTC1746 Pin Compatible with the LTC1746 Pin Compatible with the LTC1746 Pin Compatible with the LTC1746 Pin Compatible with the LTC1746 Pin Compatible with the LTC1746 www.linear.com 1746f LT/TP 0903 1K • PRINTED IN THE USA LINEAR TECHNOLOGY CORPORATION 2003 ...