LTC1090ACN#PBF Linear Technology, LTC1090ACN#PBF Datasheet
LTC1090ACN#PBF
Specifications of LTC1090ACN#PBF
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LTC1090ACN#PBF Summary of contents
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... Maximum Throughput Rate U KEY SPECIFICATIO S Resolution: 10 Bits Total Unadjusted Error (LTC1090A): ±1/2LSB Max Conversion Time: 22µs Supply Current: 2.5mA Max, 1.0mA Typ , LTC and LT are registered trademarks of Linear Technology Corporation. LTCMOS is a trademark of Linear Technology Corp. U TYPICAL APPLICATIO LTC1090 DIFFERENTIAL INPUT ...
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LTC1090 ABSOLUTE AXI U RATI GS (Notes 1 and 2) – ................................ Supply Voltage ( GND – Negative Supply Voltage (V ) ..................... – GND Voltage: Analog and Reference Inputs ...
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VERTER A D ULTIPLEXER CHARACTERISTICS apply over the full operating temperature range, otherwise specifications are T PARAMETER CONDITIONS Offset Error (Note 4) Linearity Error (Notes 4 and 5) Gain Error (Note 4) Total Unadjusted Error V ...
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LTC1090 U DIGITAL ELECTRICAL CHARACTERISTICS over the full operating temperature range, otherwise specification are T SYMBOL PARAMETER V High Level lnput Voltage IH V Low Level Input Voltage IL I High Level lnput Current IH I Low ...
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TEST CIRCUITS On and Off Channel Leakage Current OFF A POLARITY ACLK CS D OUT WAVEFORM 1 (SEE NOTE 1) D OUT WAVEFORM 2 (SEE NOTE 2) NOTE 1: WAVEFORM 1 IS FOR AN OUTPUT ...
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LTC1090 CTIO S # PIN FUNCTION 1-8 CH0 to CH7 Analog Inputs 9 COM Common 10 DGND Digital Ground 11 AGND Analog Ground – Negative Supply – + 13,14 REF , REF Reference ...
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W U TYPICAL PERFOR A CE CHARACTERISTICS Supply Current vs Supply Voltage 6 + REF OPEN ACLK = 2MHz 25° ...
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LTC1090 W U TYPICAL PERFOR A CE CHARACTERISTICS Change in Offset Error vs Temperature 0 REF 0.5 ACLK = 2MHz 0.4 0.3 0.2 0 100 125 –50 – ...
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W U TYPICAL PERFOR A CE CHARACTERISTICS Digital Input Logic Threshold vs Supply Voltage 25° SUPPLY VOLTAGE, V (V) CC LTC1090 • TPC19 U U ...
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LTC1090 U U APPLICATIO S I FOR ATIO Data transfer is initiated by a falling chip select (CS) signal. After the falling CS is recognized, an 8-bit input word is shifted into the D input which configures the LTC1090 IN ...
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U U APPLICATIO S I FOR ATIO 4 Differential CHANNEL + ( – ) 0,1 – – ) 2,3 – – ) 4,5 – – ...
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LTC1090 U U APPLICATIO S I FOR ATIO Unipolar Output Code (UNI = 1) OUTPUT CODE INPUT VOLTAGE 1111111111 V – 1LSB REF 1111111110 V – 2LSB REF • • • • • • 0000000001 1LSB 0000000000 0V Bipolar Output ...
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U U APPLICATIO S I FOR ATIO 8-Bit Word Length CS SCLK D OUT MSB FIRST D OUT LSB FIRST 10-Bit Word Length CS SCLK D OUT MSB FIRST D OUT LSB FIRST 12-Bit Word Length CS SCLK D OUT ...
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LTC1090 U U APPLICATIO S I FOR ATIO 4. CS Low During Conversion In the normal mode of operation brought high during the conversion time (see Figure 3). The serial port ignores any SCLK activity while CS is ...
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U U APPLICATIO S I FOR ATIO serial formats (see Table 2 MPU without a serial interface is used, then 4 of the MPU’s parallel port lines can be programmed to form the serial link to the LTC1090. ...
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LTC1090 U U APPLICATIO S I FOR ATIO Motorola SPI (MC68HC05C4) The MC68HC05C4 transfers data MSB first and in 8-bit increments. Programming the LTC1090 for MSB first format and 16-bit word length allows the 10-bit data output to be received ...
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U U APPLICATIO S I FOR ATIO Parallel Port Microprocessors When interfacing the LTC1090 to an MPU which has a parallel port, the serial signals are created on the port with software. Three MPU port lines are programmed to create ...
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LTC1090 U U APPLICATIO S I FOR ATIO 6. Sharing the Serial Interface The LTC1090 can share the same 3-wire serial interface with other peripheral components or other LTC1090s (see Figure 5). In this case, the CS signals decide which ...
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U U APPLICATIO S I FOR ATIO 3. Analog Inputs Because of the capacitive redistribution A/D conversion techniques used, the analog inputs of the LTC1090 have capacitive switching input current spikes. These current spikes settle quickly and do not cause ...
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LTC1090 U U APPLICATIO S I FOR ATIO Input Op Amps When driving the analog inputs with an op amp it is important that the op amp settle within the allowed time (see Figure 10). Again, the “+” and “–” ...
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U U APPLICATIO S I FOR ATIO MUX address bit is shifted in and continues during the remainder of the data transfer. On the falling edge of the final SCLK, the S&H goes into hold mode and the conver- sion ...
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LTC1090 U U APPLICATIO S I FOR ATIO HORIZONTAL: 1µs/DIV Figure 16. Poor Reference Settling Can Cause A/D Errors 6. Reduced Reference Operation The effective resolution of the LTC1090 can be increased by reducing the input span of the converter. ...
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... TO OSCILLOSCOPE OTHER CHANNELS OR SNEAK-A-BIT INPUTS V IN – SNEAK-A-BIT is a trademark of Linear Technology Corp. SNEAK-A-BIT The LTC1090’s unique ability to software select the polar- + ity of the differential inputs and the output word length is and used to achieve one more bit of resolution. Using the circuit below with two conversions and some software, a 2’ ...
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LTC1090 U TYPICAL APPLICATIO SNEAK-A-BIT CH6 IN 1ST CONVERSION ( – ) CH7 1024 STEPS 1ST CONVERSION 0V 0V 2ND CONVERSION V ( – ) CH6 IN 1024 STEPS ( + ) CH7 –5V 2ND ...
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PACKAGE DESCRIPTIO CORNER LEADS OPTION (4 PLCS) 0.023 – 0.045 (0.584 – 1.143) HALF LEAD OPTION 0.045 – 0.068 (1.143 – 1.727) FULL LEAD OPTION 0.300 BSC (0.762 BSC) 0.008 – 0.018 (0.203 – 0.457) NOTE: LEAD DIMENSIONS APPLY TO ...
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LTC1090 PACKAGE DESCRIPTIO 0.300 – 0.325 (7.620 – 8.255) 0.009 – 0.015 (0.229 – 0.381) +0.035 0.325 –0.015 +0.889 8.255 –0.381 *THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS. MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.010 INCH (0.254mm) ...
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... DIMENSION DOES NOT INCLUDE INTERLEAD FLASH. INTERLEAD FLASH SHALL NOT EXCEED 0.010" (0.254mm) 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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... LTC1852/LTC1853 10-Bit/12-Bit, 8-Channel, 400ksps ADCs LTC2404/LTC2408 24-Bit, 4-/8-Channel, No Latency ∆Σ LTC2424/LTC2428 20-Bit, 4-/8-Channel, No Latency ∆Σ ADC No Latency ∆Σ trademark of Linear Technology Corporation. Linear Technology Corporation 28 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 FAX: (408) 434-0507 COMMENTS Pin-Compatible with LTC1090 ...