LTC1401CS8 Linear Technology, LTC1401CS8 Datasheet
LTC1401CS8
Specifications of LTC1401CS8
Available stocks
Related parts for LTC1401CS8
LTC1401CS8 Summary of contents
Page 1
... The 3-wire serial port allows compact and efficient data transfer to a wide range of microprocessors, microcon- trollers and DSPs. , LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. MPU P1.4 CLK P1 ...
Page 2
... PACKAGE/ORDER + 0.3V 0.3V) CC ORDER PART NUMBER LTC1401CS8 LTC1401IS8 Order Options Tape and Reel: Add #TR Lead Free: Add #PBF Lead Free Tape and Reel: Add #TRPBF Lead Free Part Marking: Consult LTC Marketing for parts specified with wider operating temperature ranges. The ● ...
Page 3
U CO VERTER C HARA TERISTICS C range, unless otherwise noted specifications are at T otherwise specified. PARAMETER Resolution (No Missing Codes) Integral Linearity Error Differential Linearity Error Offset Error Full-Scale Error Full-Scale Tempco ACCURACY ...
Page 4
LTC1401 CHARACTERISTICS unless otherwise noted specifications are at T SYMBOL PARAMETER f Maximum Sampling Frequency SAMPLE(MAX) t Conversion Time CONV t Acquisition Time ACQ f CLK Frequency CLK t CLK Pulse Width CLK t Time ...
Page 5
W U TYPICAL PERFORMANCE CHARACTERISTICS Differential Nonlinearity vs Output Code 1 200kHz SAMPLE 0.5 0 –0.5 –1.0 0 512 1024 1536 2048 2560 3072 3584 CODE LTC1401 • TPC01 Signal-to-Noise Ratio (Without Harmonics) vs Input Frequency 80 70 ...
Page 6
LTC1401 PIN FUNCTIONS V (Pin 1): Positive Supply, 3V. Bypass to GND (10µF CC tantalum in parallel with 0.1µF ceramic). A (Pin 2): Analog Input 2.048V (Pin 3): 1.2V Reference Output. Bypass to ...
Page 7
U U APPLICATIONS INFORMATION Conversion Details The LTC1401 uses a successive approximation algorithm and an internal sample-and-hold circuit to convert an analog signal to a 12-bit serial output based on a precision internal reference. The control logic provides an easy ...
Page 8
LTC1401 U U APPLICATIONS INFORMATION 200kHz SAMPLE – 99.072266kHz IN –20 SINAD = 65dB THD = –66dB – – 25°C A –50 – 60 –70 –80 –90 –100 –110 ...
Page 9
... The following list is a summary of the op amps that are suitable for driving the LTC1401, more detailed informa- 2fa tion is available in the Linear Technology databooks or the 2fb Linear Technology Web site. LT1215/LT1216: Dual and quad 23MHz, 50V/µs single supply op amps. Single 5V to ±15V supplies, 6.6mA specifications, 90ns settling to 0 ...
Page 10
LTC1401 U U APPLICATIONS INFORMATION is available at Pin 3 to provide up to 1mA current to an external load. For minimum code transition noise, the reference output should be decoupled with a capacitor to filter wideband noise from the ...
Page 11
U U APPLICATIONS INFORMATION R1 50Ω – 100Ω 10k R3 10k FULL-SCALE ADJUST ADDITIONAL PINS OMITTED FOR CLARITY ±20LSB TRIM RANGE Figure 9a. LTC1401 Full-Scale Adjust Circuit R1 10k ANALOG + INPUT 0V TO ...
Page 12
LTC1401 U U APPLICATIONS INFORMATION circuitry. In this mode, the ADC draws only 1.5mW of power instead of 15mW (for minimum power, the logic inputs must be within 500mV of the supply rails). The wake-up time from Nap mode to ...
Page 13
U U APPLICATIONS INFORMATION CLK t 4 CONV t 6 INTERNAL SAMPLE S/H STATUS Hi-Z D REFRDY D11 OUT CLK OUT ...
Page 14
LTC1401 U TYPICAL APPLICATIONS Interface to the TMS320C50’s TDM Serial Port (Frame Sync is Generated from TFSX 10µF 0.1µF + Logic Analyzer Waveforms Show 6.4µs Throughput Rate (Input Voltage = 0.765V, Output Code = 0101 1111 1010 = ...
Page 15
U TYPICAL APPLICATIONS THIS PROGRAM DEMONSTRATES THE LTC1401 INTERFACE TO THE TMS320C50. FRAME SYNC PULSE IS GENERATED FROM TFSX. DATA SHIFT CLOCK IS DERIVED FROM CLKOUT. *Initialization* .mmregs ; Defines global symbolic names ;- - Initialized data memory to zero ...
Page 16
LTC1401 U TYPICAL APPLICATIONS LTC1401 Interface to the ADSP2181’s SPORT0 (Frame Sync is Generated from RFS) + 10µF Logic Analyzer Waveforms Show 4.8µs Throughput Rate (Input Voltage = 1.604V, Output Code = 1100 1000 1000 = 3208 X RDY Data ...
Page 17
U TYPICAL APPLICATIONS THIS PROGRAM DEMONSTRATES THE LTC1401 INTERFACE TO THE ADSP-2181. FRAME SYNC PULSE IS GENERATED FROM RFS. DATA SHIFT CLOCK IS INTERNALLY GENERATED. /*Section 1: Initialization*/ .module/ram/abs = 0 adspltc; /*define the program module*/ jump start; /*jump over ...
Page 18
LTC1401 U TYPICAL APPLICATIONS Quick Look Circuit for Converting Data to Parallel Format 3V + 10µF ANALOG INPUT (0V TO 2.048V) 1.20V REFERENCE + OUTPUT 10µF 0.1µ SHDN CC 0.1µF CONV LTC1401 7 CONV 2 A ...
Page 19
... MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED .006" (0.15mm) 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. ...
Page 20
... Input, MSOP-8 and SO-8 1.22mW, 1-/2-Channel Input, MSOP-8 and SO-8 4.25mW, 1-/2-Channel Input, MSOP-8 and SO-8 www.linear-tech.com 5V CLR 74HC161 CLK CLK OUT 20MHz LTC1401 • TA04a ADSP2181 SCLKO RFS DR0 LTC1401 • TA05a LT 0606 REV A • PRINTED IN USA © LINEAR TECHNOLOGY CORPORATION 1998 1401fa ...