DESCRIPTION
The AM6012 12-bit multiplying Digital-to-Analog converter provides high-speed and 0.025% differential nonlinearity over its full commercial temperature range.
The D/A converter uses a 3-bit segment generator for the MSBs in conjunction with a 9-bit R-2R diffused resistor ladder to provide 12-bit resolution without costly trimming processes. This technique guarantees a very uniform step size (up to ± LSB from the ideal), monotonicity to 12 bits and integral nonlinearity to 0.05% at its differential current outputs.
The dual complementary outputs of the AM6012 increase its versatility, and effectively double the peak-to-peak output swing. Digital inputs, in addition, can be configured to accept all popular logic families.
While the device requires a reference input of 1mA for a 4mA full-scale current, operation is nearly independent of power supply voltage shifts. The power supply rejection ratio is ±0.001% FS/% âV. The devices will work from +5, -12V to ±18V rails, with as low as 230mW power consumption typical.
FEATURES
⢠12-bit resolution
⢠Accurate to within ±0.05%
⢠Monotonic over temperature
⢠Fast settling time, 250ns typical
⢠Trimless design for low cost
⢠Differential current outputs
⢠High-speed multiplying capability
⢠Full-scale current, 4mA (with 1mA reference)
⢠High output compliance voltage, -5 to +10V
⢠Low power consumption, 230mW
APPLICATIONS
⢠CRT displays, computer graphics
⢠Robotics and machine tools
⢠Automatic test equipment
⢠Programmable power supplies
⢠CAD/CAM systems
⢠Data acquisition and control systems
⢠Analog-to-digital converter systems
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