LTC1298CS8 Linear Technology, LTC1298CS8 Datasheet
LTC1298CS8
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LTC1298CS8 Summary of contents
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FEATURES 12-Bit Resolution 8-Pin SOIC Plastic Package Low Cost Low Supply Current: 250 A Typ. Auto Shutdown to 1nA Typ. Guaranteed 3/4LSB Max DNL Single Supply Operation On-Chip Sample-and-Hold 60 s Conversion Time Sampling Rates: 12.5 ksps ...
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... CLK LTC1286CS8 6 D OUT LTC1286IS8 5 CS/SHDN PART MARKING S8 PACKAGE 1286 = 175 C/W JA 1286I TOP VIEW ORDER PART NUMBER REF 7 CLK LTC1298CS8 D 6 OUT LTC1298IS8 PART MARKING S8 PACKAGE 1298 = 175 C/W JA 1298I MIN TYP MAX 4.5 9.0 4.5 5.5 (Note 4) 200 = 200kHz 80 ...
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CONVERTER AND MULTIPLEXER CHARACTERISTICS PARAMETER Resolution (No Missing Codes) Integral Linearity Error Differential Linearity Error Offset Error Gain Error Analog Input Range REF Input Range (LTC1286) (Notes 7, 8, and 9) Analog Input Leakage Current (Note 10) ...
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LTC1286/LTC1298 AC CHARACTERISTICS SYMBOL PARAMETER t Analog Input Sample Time SMPL f Maximum Sampling Frequency SMPL (MAX) t Conversion Time CONV t Delay Time, CLK to D Data Valid dDO OUT t Delay Time Hi-Z dis OUT ...
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W U TYPICAL PERFORMANCE CHARACTERISTICS Reference Current vs Sample Rate (LTC1286) 100 T = 25° REF 200kHz CLK ...
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LTC1286/LTC1298 W TYPICAL PERFORMANCE CHARACTERISTICS Spurious Free Dynamic Range vs Frequency 100 25° REF 12.5kHz SMPL 0 1k 10k 100k ...
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W U TYPICAL PERFORMANCE CHARACTERISTICS Minimum Clock Frequency for 0.1 LSB Error vs Temperature 200 REF 150 100 50 0 –55 –35 – TEMPERATURE (°C) LT1286/98 • G14 U ...
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LTC1286/LTC1298 W BLOCK DIAGRAM + IN (CH0) – IN (CH1) TEST CIRCUITS Load Circuit for dDO 1. OUT 100pF Voltage Waveforms for D Delay Times, t OUT CLK dDO D OUT 8 ...
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TEST CIRCUITS Voltage Waveforms for OUT WAVEFORM 1 (SEE NOTE 1) D OUT WAVEFORM 2 (SEE NOTE 2) NOTE 1: WAVEFORM 1 IS FOR AN OUTPUT WITH INTERNAL CONDITIONS SUCH THAT THE OUTPUT IS HIGH UNLESS DISABLED ...
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LTC1286/LTC1298 U U APPLICATION INFORMATION SERIAL INTERFACE The 2-channel LTC1298 communicates with micropro- cessors and other external circuitry via a synchronous, half duplex, 4-wire serial interface. The single channel LTC1286 uses a 3-wire interface (see Operating Sequence in Figures 1 ...
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U U APPLICATION INFORMATION SHIFT MUX ADDRESS IN MSB-First Data (MSBF = suCS CLK ODD/ START SIGN D IN SGL/ MSBF DIFF NULL HI-Z BIT D OUT B11 B10 (MSB) SMPL MSB-First Data (MSBF ...
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LTC1286/LTC1298 U U APPLICATION INFORMATION Input Data Word The LTC1286 requires no D word permanently IN configured to have a single differential input. The conver- sion result appears on the D line. The data format is OUT MSB ...
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U U APPLICATION INFORMATION CS 1 CLK DATA ( START IN OUT MPU CONTROLS DATA LINE AND SENDS MUX ADDRESS TO LTC1298 Figure 3. LTC1298 Operation with D ACHIEVING MICROPOWER PERFORMANCE With typical operating currents of 250 A ...
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LTC1286/LTC1298 U U APPLICATION INFORMATION 25° REF (AFTER CONVERSION 0.002 ...
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APPLICATION INFORMATION BOARD LAYOUT CONSIDERATIONS Grounding and Bypassing The LTC1286/LTC1298 are easy to use if some care is taken. They should be used with an analog ground plane and single point grounding techniques. The GND pin should ...
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LTC1286/LTC1298 U U APPLICATION INFORMATION Differential Inputs With differential inputs, the ADC no longer converts just a single voltage but rather the difference between two volt- ages. In this case, the voltage on the selected “+” input is still sampled ...
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APPLICATION INFORMATION will slow the settling of the inputs important that the overall RC time constants be short enough to allow the analog inputs to completely settle within the allowed time. RC Input Filtering It ...
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LTC1286/LTC1298 U U APPLICATION INFORMATION 0.2V reference. If this offset is unacceptable, it can be corrected digitally by the receiving system or by offsetting the “–” input of the LTC1286. Noise with Reduced V REF The total input referred noise ...
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APPLICATION INFORMATION 25° 200kHz CLK 12.5kHz SMPL 100 INPUT FREQUENCY (kHz) ...
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LTC1286/LTC1298 TYPICAL APPLICATIONS MICROPROCESSOR INTERFACES The LTC1286/LTC1298 can interface directly without ex- ternal hardware to most popular microprocessor (MPU) synchronous serial formats (see Table 1 MPU without a dedicated serial port is used, then ...
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TYPICAL APPLICATIONS CS CLK OUT MPU TRANSMIT WORD BYTE 1 MPU ? ? ? ? ? ? ? RECEIVED WORD BYTE 1 D OUT FROM LTC1298 STORED IN MC68HC11 RAM ...
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LTC1286/LTC1298 TYPICAL APPLICATIONS Interfacing to the Parallel Port of the INTEL 8051 Family The Intel 8051 has been chosen to demonstrate the interface between the LTC1298 and parallel port micro- processors. Normally the CS, CLK and D be generated on ...
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... Figure 14. Scope Trace the LTC1286 “Quick Look” Circuit Showing A/D Output 101010101010 (AAA 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 ...
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... MIN 0.189 – 0.197* (4.801 – 5.004 0.228 – 0.244 (5.791 – 6.197 sn128698 128698fs LT/GP 0394 10K • PRINTED IN USA LINEAR TECHNOLOGY CORPORATION 1994 0.250 ± 0.010 0.150 – 0.157* (3.810 – 3.988) 4 SO8 0294 ...