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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/% DV. The devices will work from +5, -12V to ±18V rails, with as low as 230mW power consumption typical.
AM6012 Maximum Ratings
SYMBOL
PARAMETER
RATING
UNIT
TA
Operating temperature AM6012F
0 to +70
°C
TSTG
Storage temperature range
-65 to +150
°C
TSOLD
Lead soldering temperature 10sec max
300
°C
VS
Power supply voltage
±18
V
Logic inputs
-5V to +18
V
Voltage across current outputs
-8V to +12
V
VREF
Reference inputs V14, V15
V- to V+
VREF
Reference input differential voltage (V14 to V15)
±18
V
VREF
Reference input current (I14)
1.25
mA
PD
Maximum power dissipation, TA=25°C, (still-air)1 F package D package
1560 1390
mW mW
NOTES: 1. Derate above 25°C, at the following rate: F package at 12.5mW/°C D package at 11.1mW/°C
AM6012 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
AM6012 Typical Application
• 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