MAX1270B
Multirange, +5V, 8-Channel, Serial 12-Bit ADCs
12-Bit, 8-Channel, Serial ADCs Have +/-17V Fault-Protected Inputs
Part Details
- 12-Bit Resolution, 1/2LSB Linearity
- +5V Single-Supply Operation
- SPI/QSPI and MICROWIRE-Compatible 3-Wire Interface
- Four Software-Selectable Input Ranges
- MAX1270: 0 to +10V, 0 to +5V, ±10V, ±5V
- MAX1271: 0 to VREF, 0 to VREF/2, ±VREF, ±VREF/2
- Eight Analog Input Channels
- 110ksps Sampling Rate
- ±16.5V Overvoltage-Tolerant Input Multiplexer
- Internal 4.096V or External Reference
- Two Power-Down Modes
- Internal or External Clock
- 24-Pin Narrow DIP or 28-Pin SSOP Packages
The MAX1270/MAX1271 are multirange, 12-bit data-acquisition systems (DAS) that require only a single +5V supply for operation, yet accept signals at their analog inputs that may span above the power-supply rail and below ground. These systems provide eight analog input channels that are independently software programmable for a variety of ranges: ±10V, ±5V, 0 to +10V, 0 to +5V for the MAX1270; ±VREF, ±VREF/2, 0 to VREF, 0 to VREF/2 for the MAX1271. This range switching increases the effective dynamic range to 14 bits and provides the flexibility to interface 4-20mA, ±12V, and ±15V powered sensors directly to a single +5V system. In addition, these converters are fault protected to ±16.5V; a fault condition on any channel will not affect the conversion result of the selected channel. Other features include a 5MHz bandwidth track/hold, software-selectable internal/external clock, 110ksps throughput rate, and internal 4.096V or external reference operation.
The MAX1270/MAX1271 serial interface directly connects to SPI™/QSPI™ and MICROWIRE™ devices without external logic.
A hardware shutdown input (SHDN-bar) and two software-programmable power-down modes, standby (STBYPD) or full power-down (FULLPD), are provided for low-current shutdown between conversions. In standby mode, the reference buffer remains active, eliminating start-up delays.
The MAX1270/MAX1271 are available in 24-pin narrow DIP or space-saving 28-pin SSOP packages.
Applications
- Automatic Testing
- Battery-Powered Instruments
- Data Acquisition Systems
- Industrial Control Systems
- Medical Instruments
- Robotics
Documentation
This is the most up-to-date revision of the Data Sheet.
Hardware Ecosystem
| Parts | Product Life Cycle | Description |
|---|---|---|
| Multiplexed A/D Converters 9 | ||
| MAX127 | PRODUCTION | Multirange, +5V, 12-Bit DAS with 2-Wire Serial Interface |
| MAX128 | PRODUCTION | Multirange, +5V, 12-Bit DAS with 2-Wire Serial Interface |
| MAX196 | PRODUCTION | 6-Channel, Multirange, 5V, 12-Bit DAS with 12-Bit Bus Interface and Fault Protection |
| MAX197 | PRODUCTION | Multi-Range (±10V, ±5V, +10V, +5V), Single +5V, 12-Bit DAS with 8+4 Bus Interface |
| MAX198 | PRODUCTION | 6-Channel, Multirange, 5V, 12-Bit DAS with 12-Bit Bus Interface and Fault Protection |
| MAX199 | PRODUCTION | 8-Channel, Multi-Range, 5V, 12-Bit DAS with 8+4 Bus Interface and Fault Protection |
| 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 |
Evaluation Kits
Evaluation Kit/Evaluation System for the MAX1270, MAX1271, MAX127, and MAX128
Evaluation Kit/Evaluation System for the MAX1270, MAX1271, MAX127, and MAX128
Evaluation Kit/Evaluation System for the MAX1270, MAX1271, MAX127, and MAX128
Latest Discussions
No discussions on max1270b yet. Have something to say?
Start a Discussion on EngineerZone®