MAX1281
PRODUCTION400ksps/300ksps, Single-Supply, Low-Power, 8-Channel, Serial 12-Bit ADCs with Internal Reference
- Part Models
- 4
- 1ku List Price
- Starting From $10.43
Part Details
- 8-Channel Single-Ended or 4-Channel Pseudo-Differential Inputs
- Internal Multiplexer and Track/Hold
- Single-Supply Operation
- +4.5V to +5.5V (MAX1280)
- +2.7V to +3.6V (MAX1281)
- Internal +2.5V Reference
- 400ksps Sampling Rate (MAX1280)
- Low Power 2.5mA (400ksps)
- 1.3mA (Reduced-Power Mode)
- 0.9mA (Fast Power-Down Mode)
- 2µA (Full Power-Down)
- SPI/QSPI/MICROWIRE/TMS320-Compatible
- 4-Wire Serial Interface
- Software-Configurable Unipolar or Bipolar Inputs
- 20-Pin TSSOP Package
The MAX1280/MAX1281 12-bit ADCs combine an 8-channel analog-input multiplexer, high-bandwidth track/hold, and serial interface with high conversion speed and low power consumption. The MAX1280 operates from a single +4.5V to +5.5V supply; the MAX1281 operates from a single +2.7V to +3.6V supply. Both devices' analog inputs are software configurable for unipolar/bipolar and single-ended/pseudo-differential operation.
The 4-wire serial interface connects directly to SPI™/QSPI™/MICROWIRE™ devices without external logic. A serial strobe output allows direct connection to TMS320-family digital signal processors. The MAX1280/MAX1281 use an external serial-interface clock to perform successive-approximation analog-to-digital conversions. Both parts feature an internal +2.5V reference and a reference-buffer amplifier with a ±1.5% voltage-adjustment range. An external reference with a 1V to VDD1 range may also be used.
The MAX1280/MAX1281 provide a hard-wired active-low SHDN pin and four software-selectable power modes (normal operation, reduced power, fast power-down, and full power-down). These devices can be programmed to automatically shut down at the end of a conversion or to operate with reduced power. When using the power-down modes, accessing the serial interface automatically powers up the devices, and the quick turn-on time allows them to be powered down between all conversions. This technique can cut supply current to under 100µA at reduced sampling rates.
The MAX1280/MAX1281 are available in 20-pin TSSOP packages. These devices are higher-speed versions of the MAX146/MAX147 (for more information, see the respective data sheet).
Applications
- Battery-Powered Applications
- Data Acquisition
- Medical Instruments
- Pen Digitizers
- Portable Data Logging
- Process Control
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 |
|---|---|---|---|
| MAX1281BCUP+ | Thin Shrink Small-Outline Package | ||
| MAX1281BCUP+T | Thin Shrink Small-Outline Package | ||
| MAX1281BEUP+ | Thin Shrink Small-Outline Package | ||
| MAX1281BEUP+T | Thin Shrink Small-Outline Package |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Dec 11, 2018 - 1754N ASSEMBLY |
||
| MAX1281BCUP+ | PRODUCTION | |
| MAX1281BCUP+T | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Software Resources
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| Parts | Product Life Cycle | Description |
|---|---|---|
| Multiplexed A/D Converters 8 | ||
| MAX1081 | PRODUCTION | 300ksps/400ksps, Single-Supply, Low-Power, 8-Channel, Serial 10-Bit ADCs with Internal Reference |
| MAX1082 | PRODUCTION | 300ksps/400ksps, Single-Supply, 4-Channel, Serial 10-Bit ADCs with Internal Reference |
| MAX1083 | PRODUCTION | 300ksps/400ksps, Single-Supply, 4-Channel, Serial 10-Bit ADCs with Internal Reference |
| MAX1282 | PRODUCTION | 300ksps/400ksps, Single-Supply, 4-Channel, Serial 12-Bit ADCs with Internal Reference |
| MAX1283 | PRODUCTION | 300ksps/400ksps, Single-Supply, 4-Channel, Serial 12-Bit ADCs with Internal Reference |
| MAX11637 | PRODUCTION | 12-Bit, 300ksps ADCs with Differential Track/Hold, and Internal Reference |
| MAX146 | PRODUCTION | +2.7V, Low-Power, 8-Channel, Serial 12-Bit ADCs |
| MAX11629 | PRODUCTION | 12-Bit, 300ksps ADCs with FIFO and Internal Reference |
| Product 1 | ||
| MAX1080 | 300ksps/400ksps, Single-Supply, Low-Power, 8-Channel, Serial 10-Bit ADCs with Internal Reference | |
| Single Channel A/D Converters 4 | ||
| MAX1084 | Obsolete | 400ksps/300ksps, Single-Supply, Low-Power, Serial 10-Bit ADCs with Internal Reference |
| MAX1085 | PRODUCTION | 400ksps/300ksps, Single-Supply, Low-Power, Serial 10-Bit ADCs with Internal Reference |
| MAX1284 | PRODUCTION | 400ksps/300ksps, Single-Supply, Low-Power, Serial 12-Bit ADCs with Internal Reference |
| MAX1285 | PRODUCTION | 400ksps/300ksps, Single-Supply, Low-Power, Serial 12-Bit ADCs with Internal Reference |
Evaluation Kits
Evaluation Kit/Evaluation System for the MAX1280
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