Specifications

10 Control and Automation Solutions Guide
Benefits
• Reduce complexity and cost by
eliminating external gain stages and
muxes
◦ Each ADC measures eight unique
bipolar and unipolar input ranges
◦ Multiple software-programmable
input ranges up to ±12.288V full
scale
• Flexible, easy-to-reuse circuit for
multiple applications
◦ 16-bit and 14-bit resolution in the
same package
• Eliminate external protection
components and save space and cost
◦ Up to ±16.5V analog-input
protection
16-Bit ADC with Software-Programmable
Input Ranges on Each ADC Channel Saves
Design Time
MAX1300
*
/MAX1301, MAX1302
*
/MAX1303
The MAX1300/MAX1301/MAX1302/MAX1303 ADC family is an ideal t for PLC
applications because they measure many unique unipolar and bipolar input
ranges, all with 16-bit operation and no missing codes. The eight single-ended
or dierential-input ranges vary as low as a unipolar 0 to 2.048V full scale up to a
bipolar ±12.288V full scale. Each input channel can be programmed by software for
a dierent input range, making the MAX1300 family highly versatile. By eliminating
analog front-end stages, these ADCs also reduce cost and area, while increasing
accuracy. The ADCs are available with 14-bit resolution and 4 or 8 channels.
*Future product—contact the factory for availability.
PGA
LOGIC
ISOLATED ANALOG-INPUT BOARD
±16.5V FAULT
TOLERANT
AV
DD
DV
DD
DGND AGND
REF
REFREFADJ
CS
SPI
DOUT
SCLK
PLC
SYSTEM
+12V
+V
REF
-V
REF
-12V
DC-DC
MAX1300*/MAX1301
MAX1302*/MAX1303
ISOLATION
BARRIER
FIFO
MUX
16-/14-BIT
SAR ADC
The MAX1300–MAX1303 ADCs reduce cost by offering programmable input-voltage ranges.