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Parameter
Design A
Design B
Design C
Design D
Main Design Objectives
Low cost, loose accuracy
High absolute accuracy and precision
One-time calibrated, low drift
Low voltage, battery powered, moderate accuracy
Example Application
Consumer audio device
Lab instrument
Digital offset and gain adjustment
Portable instrument
DAC
MAX5304,
10-bit single
MAX5170,
14-bit single
MAX5154,
12-bit dual
MAX5176,
12-bit single
DAC Output
Force/sense gain set to 1
Fixed gain = 1.638
Fixed gain = 2
Fixed gain = 1.638
Voltage Reference
MAX6102
MAX6325
MAX6162
A grade
MAX6190
A grade
Reference Voltage
2.5V
2.5V
2.048V
1.25V
Reference Initial Accuracy
0.4% or 4000ppm
Not critical due to gain calibration
Not critical due to gain calibration
0.16% or 1600ppm
Selected Reference Tempco (maximum)
75ppm°C
1ppm/°C
5ppm/°C
5ppm/°C
Reference-Load Regulation
0.9mV/mA
6ppm/mA
0.9mV/mA
0.5µV/µA
Temperature Range
0°C to 70°C (commercial)
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