LTC1417ACGN Linear Technology, LTC1417ACGN Datasheet
LTC1417ACGN
Specifications of LTC1417ACGN
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LTC1417ACGN Summary of contents
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... AC performance includes 81dB S/( and – 95dB THD at a Nyquist input frequency of 200kHz. The internal clock is trimmed for 2 s maximum conver- sion time. A separate convert start input and a data ready signal (BUSY) ease connections to FIFOs, DSPs and microprocessors. , LTC and LT are registered trademarks of Linear Technology Corporation ...
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... C. Specifications are measured while using the internal reference unless CONDITIONS 4.75V V 5.25V (Unipolar) DD 4.75V V 5.25V, – 5.25V CONVST = High U W ORDER PART NUMBER TOP VIEW LTC1417ACGN LTC1417CGN BUSY LTC1417AIGN 4 13 CONVST LTC1417IGN ...
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ALOG I PUT The indicates specifications which apply over the full operating temperature range, otherwise specifications are (Note 5) A SYMBOL PARAMETER C Analog Input Capacitance IN t Sample-and-Hold Acquisition Time ACQ ...
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LTC1417 W U POWER REQUIRE E TS otherwise specifications are (Note 5) A SYMBOL PARAMETER V Positive Supply Voltage (Notes 10, 11 Negative Supply Voltage (Note 10 Positive Supply Current DD ...
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CHARACTERISTICS range, otherwise specifications are SYMBOL PARAMETER t SCLK High Time H SCLK t SCLK Low Time L SCLK t EXTCLKIN High Time H EXTCLKIN t EXTCLKIN Low Time L EXTCLKIN f ...
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LTC1417 W U TYPICAL PERFOR A CE CHARACTERISTICS Signal-to-Noise Ratio vs Input Frequency 10k 100k 1M INPUT FREQUENCY (Hz) 1417 G04 Nonaveraged, 4096 Point FFT, Input Frequency = 10kHz ...
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W U TYPICAL PERFOR A CE CHARACTERISTICS V Supply Current vs DD Temperature (Unipolar Mode –75 –50 – 100 125 150 TEMPERATURE ( C) 1417 G13 V Supply Current ...
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LTC1417 PIN FUNCTIONS CONVST (Pin 13): Conversion Start Signal. This active low signal starts a conversion on its falling edge. BUSY (Pin 14): The BUSY output shows the converter status low when a conversion is ...
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U U APPLICATIONS INFORMATION CONVERSION DETAILS The LTC1417 uses a successive approximation algorithm and an internal sample-and-hold circuit to convert an analog signal to a 14-bit serial output. The ADC is com- plete with a precision reference and an internal ...
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LTC1417 U U APPLICATIONS INFORMATION 400kHz SAMPLE f = 10.05859375kHz IN –20 SFDR = –97.44dB SINAD = 81.71dB –40 –60 –80 –100 –120 0 50 100 150 FREQUENCY (kHz) Figure 3a. LTC1417 Nonaveraged, 4096 Point FFT, Input ...
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U U APPLICATIONS INFORMATION 0 – 20 – 40 – 60 – 80 THD –100 2ND –120 1 10 100 INPUT FREQUENCY (kHz) Figure 5. Distortion vs Input Frequency Intermodulation Distortion If the ADC input signal consists of more than ...
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... DC accuracy and settling time are most critical. The following list is a summary of the op amps that are suitable for driving the LTC1417. More detailed information is available in the Linear Technology Databooks and on the TM LinearView CD-ROM. ...
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U U APPLICATIONS INFORMATION capacitor from + A to ground and a 100 source resistor IN to limit the input bandwidth to 1.6MHz. The 1000pF capacitor also acts as a charge reservoir for the input sample-and-hold and isolates the ADC ...
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LTC1417 U U APPLICATIONS INFORMATION Unipolar Offset and Full-Scale Error Adjustment In applications where absolute accuracy is important, offset and full-scale errors can be adjusted to zero. Offset error must be adjusted before full-scale error. Figures 11a and 11b show ...
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U U APPLICATIONS INFORMATION ANALOG 2 + INPUT – CIRCUITRY wait state during conversion or by using three-state buff- ers to isolate the ADC data bus. The traces connecting the pins and bypass capacitors must ...
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LTC1417 U U APPLICATIONS INFORMATION JP1 R3 75 JP2 J1 BNC R1 C3 10k 1000pF 50V BNC R2 JP3 10k + 16V Figure 13b. Suggested Evaluation Circuit Board—Component Side Silkscreen 16 ...
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U U APPLICATIONS INFORMATION DIGITAL INTERFACE The LTC1417 operates in serial mode. The RD control input is common to all peripheral memory interfacing. Only four digital interface lines are required, SCLK, CONVST, EXTCLKIN and D . SCLK, the serial data ...
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LTC1417 U U APPLICATIONS INFORMATION Conversion Clock Selection In Figure 15, the conversion clock controls the internal ADC operation. The conversion clock can be either inter- nal or external. By connecting EXTCLKIN high, the inter- nal clock is selected. This ...
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U U APPLICATIONS INFORMATION Serial Data Output During a Conversion Using Internal Clock for Conversion and Data Transfer. Figure 17 shows data from the previous conversion being clocked out during the conversion with the LTC1417 internal clock providing both the ...
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LTC1417 U U APPLICATIONS INFORMATION Using External Clock for Conversion and Data Transfer. In Figure 18, data from the previous conversion is output during the conversion with an external clock providing both the conversion clock and the shift clock. To ...
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U U APPLICATIONS INFORMATION Serial Data Output After a Conversion Using an Internal Conversion Clock and an External Data Clock. In this mode, data is output after the end of each conversion and before the next conversion is started (Figure ...
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LTC1417 U U APPLICATIONS INFORMATION Using an External Conversion Clock and an External Data Clock. In Figure 20, data is also output after each conversion is completed and before the next conversion is started. An external clock is used for ...
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U TYPICAL APPLICATIONS Figure 21 shows the connections necessary for interfacing the LTC1417 and LTC1391 8-channel signal acquisition system to an SPI port. With the sample software routine shown in Listing A, the SPI uses MOSI to send serial data ...
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LTC1417 U TYPICAL APPLICATIONS Listing A *********************************************************************** * * This example program retrieves data from a previous LTC1417 * conversion and loads the next LTC1391 MUX channel. It stores the * 14-bit, right justified data in two consecutive memory locations. ...
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U TYPICAL APPLICATIONS * (This assumes an E-Clock frequency of 4MHz. For higher * E-Clock frequencies, change the above value of $ value that ensures the SCK frequency is 2MHz or less.) GETDATAPSHX PSHY PSHA * ***************************************** ...
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LTC1417 U TYPICAL APPLICATIONS * ***************************************** * Initiate a LTC1417 conversion ***************************************** * BCLR PORTC,Y %00000001 * BSET PORTC,Y %00000001 * * PULA Restore the A register PULY Restore the Y register PULX Restore the X register RTS CONVST BUSY ...
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U TYPICAL APPLICATIONS Figure 23 uses the DG408 to select one of eight 2.048V bipolar signals and apply it to the LTC1417’s analog input. The circuit is designed to connect to a 68HC11 C. The MUX’s parallel input is connected ...
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LTC1417 U TYPICAL APPLICATIONS Listing B ************************************************************************* * * This example program selects a DG408 MUX channel using parallel * port C, initiates a conversion, and retrieves data from the LTC1417 stores the 14-bit, right justified data in ...
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U TYPICAL APPLICATIONS * E-Clock frequencies, change the above value of $ value that ensures the SCK frequency is 2MHz or less.) GETDATAPSHX PSHY PSHA * ***************************************** * Setup indecies ***************************************** * LDX #$0 The X register ...
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LTC1417 U TYPICAL APPLICATIONS BCLR PORTD,Y %00100000 * TRFLP1 LDAA #$0 Load accumulator A with a null byte for SPI transfer STAA SPDR This writes the byte into the SPI data register and * starts the transfer WAIT1 LDAA SPSR ...
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... 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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... Low Noise and Low Glitch Rail-to-Rail V Low Power, SO-8 with Internal Reference Low Power, 8-Lead MSOP Rail-to-Rail V 0.05% Max, 5ppm/ C Max 0.075% Max, 10ppm/ C Max 0.04%, 3ppm/ C www.linear.com OUT OUT sn1417 1417fas LT/TP 0102 1.5K REV A • PRINTED IN USA LINEAR TECHNOLOGY CORPORATION 1999 ...