MAX128 Datasheet | Maxim Integrated

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- 20m A, ±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-patible serial interface that allows munication 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 space-saving 28-pin SSOP packages. Applications - - Industrial Control Systems - - Data-Acquisition Systems - - Robotics - - Automatic Testing - - Battery-Powered Instruments - - Medical Instruments Ordering Information PART TEMP RANGE PIN-PACKAGE MAX127ACNG+ 0°C to +70°C 24 Narrow PDIP MAX127ACNG+ 0°C to +70°C 24 Narrow PDIP +Denotes a lead(Pb)-free/Ro HS-pliant package. INL (LSB) ±1/2 ±1 Ordering Information continued at end of data sheet. Features - - 12-Bit Resolution, 1/2 LSB Linearity - -...