MAX1245
PRODUCTION+2.375V, Low-Power, 8-Channel, Serial 12-Bit ADC
Ideal for Portable 2.5V 12-Bit Systems
- Part Models
- 1
- 1ku List Price
- Starting From $16.19
Part Details
- Single +2.375V to +3.3V Operation
- 8-Channel Single-Ended or 4-Channel Differential Analog Inputs
- Low Power:
- 0.8mA (100ksps)
- 10µA (1ksps)
- 1µA (power-down mode)
- Internal Track/Hold, 100kHz Sampling Rate
- SPI/QSPI/MICROWIRE/TMS320-Compatible 4-Wire Serial Interface
- Software-Configurable Unipolar or Bipolar Inputs
- 20-Pin DIP/SSOP Packages
The MAX1245 12-bit data-acquisition system combines an 8-channel multiplexer, high-bandwidth track/hold, and serial interface with high conversion speed and ultra-low power consumption. It operates from a single +2.375V to +3.3V supply, and its analog inputs are software configurable for unipolar/bipolar and single-ended/differential operation.
The 4-wire serial interface directly connects to SPI™, QSPI™, and MICROWIRE™ devices without external logic. A serial strobe output allows direct connection to TMS320-family digital signal processors. The MAX1245 works with an external reference, and uses either the internal clock or an external serial-interface clock to perform successive-approximation analog-to-digital conversions.
This device provides a hard-wired active-low SHDN pin and a software-selectable power-down, and can be programmed to automatically shut down at the end of a conversion. Accessing the serial interface powers up the MAX1245, and the quick turn-on time allows it to be shut down between conversions. This technique can cut supply current to under 10µA at reduced sampling rates.
The MAX1245 is available in a 20-pin DIP package and an SSOP that occupies 30% less area than an 8-pin DIP. For supply voltages from +2.7V to +5.25V, use the pin-compatible MAX147.
Applications
- Battery-Powered Applications
- Data Acquisition
- Medical Instruments
- Portable Data Logging
Documentation
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| MAX1245BEAP+ | 20-SSOP-5.3_MM |
This is the most up-to-date revision of the Data Sheet.
Software Resources
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| Parts | Product Life Cycle | Description |
|---|---|---|
| Analog to Digital Converters (ADCs) 3 | ||
| MAX147 | PRODUCTION | +2.7V, Low-Power, 8-Channel, Serial 12-Bit ADCs |
| MAX11637 | PRODUCTION | 12-Bit, 300ksps ADCs with Differential Track/Hold, and Internal Reference |
| MAX11629 | PRODUCTION | 12-Bit, 300ksps ADCs with FIFO and Internal Reference |
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