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LTC1092 Datasheet(PDF) 1 Page - Linear Technology |
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LTC1092 Datasheet(HTML) 1 Page - Linear Technology |
1 / 32 page 1 LTC1091/LTC1092 LTC1093/LTC1094 1-, 2-, 6- and 8-Channel, 10-Bit Serial I/O Data Acquisition Systems s Programmable Features – Unipolar/Bipolar Conversions – Differential/Single-Ended Multiplexer Configurations s Sample-and-Holds s Single Supply 5V, 10V or ±5V Operation s Direct 3- or 4-Wire Interface to Most MPU Serial Ports and All MPU Parallel I/O Ports s Analog Inputs Common Mode to Supply Rails s Resolution: 10 Bits s Total Unadjusted Error (A Grade): ±1LSB Over Temp s Fast Conversion Time: 20 µs s Low Supply Current LTC1091: 3.5mA Max, 1.5mA Typ LTC1092/LTC1093/LTC1094: 2.5mA Max, 1mA Typ 5V ANALOG INPUT #1 0V TO 5V RANGE ANALOG INPUT #2 0V TO 5V RANGE CLK DOUT DIN CS CH0 CH1 GND LTC1091 MPU (e.g., 8051) P1.4 P1.3 P1.2 1091 TA01 8 7 6 5 1 2 3 4 SERIAL DATA LINK FOR 8051 CODE SEE APPLICATIONS INFORMATION SECTION VCC (VREF) 4.7 µF REFERENCE VOLTAGE (V) 0 1.25 1.00 0.75 0.50 0.25 0 4 1091 TA02 1 2 3 5 VCC = 5V The LTC ®1091/LTC1092/LTC1093/LTC1094 10-bit data acquisition systems are designed to provide complete function, excellent accuracy and ease of use when digitiz- ing analog data from a wide variety of signal sources and transducers. Built around a 10-bit, switched capacitor, successive approximation A/D core, these devices include software configurable analog multiplexers and bipolar and unipolar conversion modes as well as on-chip sample- and-holds. On-chip serial ports allow efficient data trans- fer to a wide range of microprocessors and microcontrol- lers. These circuits can provide a complete data acquisi- tion system in ratiometric applications or can be used with an external reference in others. The high impedance analog inputs and the ability to operate with reduced spans (below 1V full scale) allow direct connection to sensors and transducers in many applications, eliminating the need for gain stages. An efficient serial port communicates without external hardware to most MPU serial ports and all MPU parallel I/O ports allowing eight channels of data to be transmitted over as few as three wires. This, coupled with low power consumption, makes remote location possible and facili- tates transmitting data through isolation barriers. Temperature drift of offset, linearity and full-scale error are all extremely low (1ppm/ °C typically) allowing all grades to be specified with offset and linearity errors of ±0.5LSB maximum over temperature. In addition, the A grade devices are specified with full-scale error and total unadjusted error (including the effects of offset, linearity and full-scale errors) of ±1LSB maximum over tempera- ture. The lower grade has a full-scale specification of ±2LSB for applications where full scale is adjustable or less critical. , LTC and LT are registered trademarks of Linear Technology Corporation. FEATURES DESCRIPTIO TYPICAL APPLICATION |
Similar Part No. - LTC1092_15 |
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Similar Description - LTC1092_15 |
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