Multirange / +5V / 12-Bit DAS with 2-Wire Serial Interface
MAX127/MAX128
EVALUATION KIT AVAILABLE
Multirange, +5V, 12-Bit DAS with 2-Wire Serial Interface
General Description
Th...
Description
MAX127/MAX128
EVALUATION KIT AVAILABLE
Multirange, +5V, 12-Bit DAS with 2-Wire Serial Interface
General Description
The MAX127/MAX128 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 MAX127; and ±VREF, ±VREF/2, 0 to +VREF, 0 to +VREF/2 for the MAX128. 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, an 8ksps throughput rate, and the option of an internal 4.096V or external reference.
The MAX127/MAX128 feature a 2-wire, I2C-compatible serial interface that allows communication among multiple devices using SDA and SCL lines.
A hardware shutdown input (SHDN) and two softwareprogrammable power-down modes (standby and full powerdown) are provided for low-current shutdown between conversions. In standby mode, the reference buffer remains active, eliminating startup delays.
The MAX127/MAX128 are available in 24-pin narrow PDIP or ...
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