Datasheet LTC1283 (Analog Devices)
| Fabricante | Analog Devices |
| Descripción | 3V Single Chip 10-Bit Data Acquisition System |
| Páginas / Página | 24 / 1 — FEATU. DESCRIPTIO. KEY SPECIFICATIO S. TYPICAL APPLICATI. Linearity Plot |
| Formato / tamaño de archivo | PDF / 352 Kb |
| Idioma del documento | Inglés |
FEATU. DESCRIPTIO. KEY SPECIFICATIO S. TYPICAL APPLICATI. Linearity Plot
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LTC1283 3V Single Chip 10-Bit Data Acquisition System
U FEATU S RE DESCRIPTIO
■ Single Supply 3.3V or ±3.3V Operation The LTC1283 is a 3V data acquisition component which ■ Software Programmable Features: contains a serial I/O successive approximation A/D con- Unipolar/Bipolar Conversions verter. It uses LTCMOSTM switched capacitor technology 4 Differential/8 Single-Ended Inputs to perform either 10-bit unipolar, or 9-bit plus sign bipolar MSB- or LSB-First Data Sequence A/D conversions. The 8-channel input multiplexer can be Variable Data Word Length configured for either single-ended or differential inputs (or ■ Built-In Sample-and-Hold combinations thereof). An on-chip sample-and-hold is ■ Direct 4-Wire Interface to Most MPU Serial Ports included for all single-ended input channels. and all MPU Parallel Ports The serial I/O is designed to be compatible with industry- ■ 15kHz Maximum Throughput Rate standard full-duplex serial interfaces. It allows either MSB-
U
or LSB-first data and automatically provides 2’s comple-
KEY SPECIFICATIO S
ment output coding in the bipolar mode. The output data ■ Minimum Guaranteed Supply Voltage: 3V word can be programmed for a length of 8-, 10-, 12-, or ■ Resolution: 10 Bits 16-bit. This allows easy interface to shift registers and a ■ Offset Error: ±0.5LSB Max variety of processors. ■ Linearity Error: ±0.5LSB Max Both the LTC1283A and LTC1283 are specified with offset ■ Gain Error (LTC1283A): ±1LSB Max and linearity errors less than ±0.5LSB. The LTC1283A has ■ Conversion Time: 44μs a gain error limit of ±1LSB. The 1283 is specified with a ■ Supply Current: 350μA Max, 150μA Typ gain error limit of ±2LSB for applications where gain is , LT, LTC and LTM are registered trademarks of Linear Technology Corporation. adjustable or less critcial. LTCMOS is a trademark of Linear Technology Corporation. All other trademarks are the property of their respective owners.
O U TYPICAL APPLICATI
4.7μF FOR 83CL410 CODE SEE 3V
Linearity Plot
APPLICATIONS INFORMATION SECTION 1.0 LTC1283 MPU (e.g., 83CL410) DIFFERENTIAL INPUT 0.5 3V BIPOLAR INPUT 0 –3V 3V ERROR (LSBs) D P1.1 OUT D P1.2 IN –0.5 SCLK P1.3 T UNIPOLAR CS P1.4 INPUTS SERIAL DATA LINK – 1.0 0 512 1024 OUTPUT CODE LTC1283 • TA02 (+) –UNIPOLAR (–) INPUT –3V LTC1283 • TA01 1283fb 1
U FEATU S RE DESCRIPTIO
■ Single Supply 3.3V or ±3.3V Operation The LTC1283 is a 3V data acquisition component which ■ Software Programmable Features: contains a serial I/O successive approximation A/D con- Unipolar/Bipolar Conversions verter. It uses LTCMOSTM switched capacitor technology 4 Differential/8 Single-Ended Inputs to perform either 10-bit unipolar, or 9-bit plus sign bipolar MSB- or LSB-First Data Sequence A/D conversions. The 8-channel input multiplexer can be Variable Data Word Length configured for either single-ended or differential inputs (or ■ Built-In Sample-and-Hold combinations thereof). An on-chip sample-and-hold is ■ Direct 4-Wire Interface to Most MPU Serial Ports included for all single-ended input channels. and all MPU Parallel Ports The serial I/O is designed to be compatible with industry- ■ 15kHz Maximum Throughput Rate standard full-duplex serial interfaces. It allows either MSB-
U
or LSB-first data and automatically provides 2’s comple-
KEY SPECIFICATIO S
ment output coding in the bipolar mode. The output data ■ Minimum Guaranteed Supply Voltage: 3V word can be programmed for a length of 8-, 10-, 12-, or ■ Resolution: 10 Bits 16-bit. This allows easy interface to shift registers and a ■ Offset Error: ±0.5LSB Max variety of processors. ■ Linearity Error: ±0.5LSB Max Both the LTC1283A and LTC1283 are specified with offset ■ Gain Error (LTC1283A): ±1LSB Max and linearity errors less than ±0.5LSB. The LTC1283A has ■ Conversion Time: 44μs a gain error limit of ±1LSB. The 1283 is specified with a ■ Supply Current: 350μA Max, 150μA Typ gain error limit of ±2LSB for applications where gain is , LT, LTC and LTM are registered trademarks of Linear Technology Corporation. adjustable or less critcial. LTCMOS is a trademark of Linear Technology Corporation. All other trademarks are the property of their respective owners.
O U TYPICAL APPLICATI
4.7μF FOR 83CL410 CODE SEE 3V
Linearity Plot
APPLICATIONS INFORMATION SECTION 1.0 LTC1283 MPU (e.g., 83CL410) DIFFERENTIAL INPUT 0.5 3V BIPOLAR INPUT 0 –3V 3V ERROR (LSBs) D P1.1 OUT D P1.2 IN –0.5 SCLK P1.3 T UNIPOLAR CS P1.4 INPUTS SERIAL DATA LINK – 1.0 0 512 1024 OUTPUT CODE LTC1283 • TA02 (+) –UNIPOLAR (–) INPUT –3V LTC1283 • TA01 1283fb 1