LTC2445IUHF#TRPBF Linear Technology, LTC2445IUHF#TRPBF Datasheet
LTC2445IUHF#TRPBF
Specifications of LTC2445IUHF#TRPBF
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LTC2445IUHF#TRPBF Summary of contents
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... LTC and LT are registered trademarks of Linear Technology Corporation. No Latency ∆Σ trademark of Linear Technology Corporation. 4.5V TO 5.5V 1µF ...
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LTC2444/LTC2445/ LTC2448/LTC2449 ABSOLUTE AXI U RATI GS (Notes 1, 2) Supply Voltage ( GND .......................– 0. Analog Input Pins Voltage to GND .................................... – 0. Reference Input Pins Voltage to ...
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ELECTRICAL CHARACTERISTICS temperature range, otherwise specifications are at T PARAMETER CONDITIONS 0.1V ≤ V Resolution (No Missing Codes) Integral Nonlinearity V = 5V, REF CC + REF = 2.5V, REF 2.5V ≤ REF Offset Error GND ≤ IN 2.5V ≤ ...
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LTC2444/LTC2445/ LTC2448/LTC2449 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 CS Low Level Input Voltage IL CS ...
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CHARACTERISTICS range, otherwise specifications are at T SYMBOL PARAMETER D Internal SCK Duty Cycle ISCK f External SCK Frequency Range ESCK t External SCK Low Period LESCK t External SCK High Period HESCK t Internal ...
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LTC2444/LTC2445/ LTC2448/LTC2449 CTIO S GND – 0. 0.3V. Within these limits, the two CC + – selected inputs (IN and IN ) provide a bipolar input range + – ...
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CTIO AL BLOCK DIAGRA V CC GND + REF – REF CH0 CH1 • • MUX • CH15 COM TEST CIRCUITS SDO 1.69k C Hi Hi-Z OH ...
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LTC2444/LTC2445/ LTC2448/LTC2449 U U APPLICATIO S I FOR ATIO Initially, the LTC2444/LTC2445/LTC2448/LTC2449 per- form a conversion. Once the conversion is complete, the device enters the sleep state. While in this sleep state, power consumption is reduced below 10µA. The part ...
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U U APPLICATIO S I FOR ATIO LTC2448/LTC2449 convert the bipolar differential input + – + signal – IN (where IN and IN IN input channels), from – – 0.5 • – where ...
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LTC2444/LTC2445/ LTC2448/LTC2449 U U APPLICATIO S I FOR ATIO SCK SDI 1 0 BIT 31 BIT 30 Hi-Z SDO EOC “0” BUSY Figure 3. SDI Speed/Resolution, Channel Selection, and Data Output Timing first falling edge of SCK. ...
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U U APPLICATIO S I FOR ATIO external SCK mode is selected by tying EXT (Pin 3) LOW for external SCK and HIGH for internal SCK. Serial Data Output (SDO) The serial data output pin, SDO (Pin 37), provides the ...
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LTC2444/LTC2445/ LTC2448/LTC2449 U U APPLICATIO S I FOR ATIO Table 3. Channel Selection for the LTC2448/LTC2449 MUX ADDRESS ODD/ SGL SIGN – ...
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U U APPLICATIO S I FOR ATIO Table 4. Channel Selection for the LTC2444/LTC2445 (Bit A2 Should Always Be 0) MUX ADDRESS ODD/ SGL SIGN * ...
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LTC2444/LTC2445/ LTC2448/LTC2449 U U APPLICATIO S I FOR ATIO Table 5. LTC2444/LTC2445/LTC2448/LTC2449 Speed/Resolution Selection OSR3 OSR2 OSR1 OSR0 TWOX INTERNAL EXTERNAL ...
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U U APPLICATIO S I FOR ATIO Speed Multiplier Mode In addition to selecting the speed/resolution, a speed multiplier mode is used to double the output rate while maintaining the selected resolution. The last bit of the 5-bit speed/resolution control ...
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LTC2444/LTC2445/ LTC2448/LTC2449 U U APPLICATIO S I FOR ATIO External Serial Clock, Single Cycle Operation (SPI/MICROWIRE Compatible) This timing mode uses an external serial clock to shift out the conversion result and a CS signal to monitor and control the ...
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U U APPLICATIO S I FOR ATIO As described above, CS may be pulled LOW at any time in order to monitor the conversion status on the SDO pin. Typically, CS remains LOW during the data output state. However, the ...
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LTC2444/LTC2445/ LTC2448/LTC2449 U U APPLICATIO S I FOR ATIO External Serial Clock, 2-Wire I/O This timing mode utilizes a 2-wire serial I/O interface. The conversion result is shifted out of the device by an exter- nally generated serial clock (SCK) ...
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U U APPLICATIO S I FOR ATIO Internal Serial Clock, Single Cycle Operation This timing mode uses an internal serial clock to shift out the conversion result and a CS signal to monitor and control the state of the conversion ...
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LTC2444/LTC2445/ LTC2448/LTC2449 U U APPLICATIO S I FOR ATIO If CS remains LOW longer than t EOCtest edge of SCK will occur and the conversion result is serially shifted out of the SDO pin. The data output cycle begins on ...
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U U APPLICATIO S I FOR ATIO Internal Serial Clock, 2-Wire I/O, Continuous Conversion This timing mode uses a 2-wire, all output (SCK and SDO) interface. The conversion result is shifted out of the device by an internally generated serial ...
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LTC2444/LTC2445/ LTC2448/LTC2449 U U APPLICATIO S I FOR ATIO Normal Mode Rejection and Antialiasing One of the advantages delta-sigma ADCs offer over con- ventional ADCs is on-chip digital filtering. Combined with a large oversampling ratio, the LTC2444/LTC2445/ LTC2448/LTC2449 significantly simplify ...
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U U APPLICATIO S I FOR ATIO grounded set by the on-chip oscillator 1.8MHz ±5% (over supply and temperature variations OSR of 32,768, the first NULL latency ...
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LTC2444/LTC2445/ LTC2448/LTC2449 U U APPLICATIO S I FOR ATIO Reduced Power Operation In addition to adjusting the speed/resolution of the LTC2444/LTC2445/LTC2448/LTC2449, the speed/reso- lution/power dissipation may also be adjusted using the automatic sleep mode. During the conversion cycle, the LTC2444/LTC2445/LTC2448/LTC2449 ...
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U U APPLICATIO S I FOR ATIO Input Bandwidth and Frequency Rejection The combined effect of the internal SINC the digital and analog autocalibration circuits determines the LTC2444/LTC2445/LTC2448/LTC2449 input band- width and rejection characteristics. The digital filter’s response can be ...
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LTC2444/LTC2445/ LTC2448/LTC2449 U U APPLICATIO S I FOR ATIO Example amplifier (e.g. LT1219) driving the input of an LTC2444/LTC2445/LTC2448/LTC2449 has wideband noise of 33nV/√Hz, band-limited to 1.8MHz, the total noise entering the ADC input is: 33nV/√Hz • √1.8MHz ...
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... DRAWING NOT TO SCALE 3. ALL DIMENSIONS ARE IN MILLIMETERS 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. U UHF Package 38-Lead Plastic QFN (5mm × ...
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... LTC2430/LTC2431 2-Channel, Differential Input, 16-Bit, No Latency ∆Σ ADC LTC2436-1 LTC2440 1-Channel, Differential Input, High Speed/Low Noise, 24-Bit, No Latency ∆Σ ADC SoftSpan is a trademark of Linear Technology Corporation. Linear Technology Corporation 28 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 FAX: (408) 434-0507 ● ...