FEATURES Differential Nonlinearity: 1/2 LSB Nonlinearity: 0.05% Fast Settling Time: 250 ns High Compliance: +10 V Differential Outputs: 4 mA Guaranteed Monotonicity: 12 Bits Low Full-Scale Tempco: 10 ppm/ C Circuit Interface to TTL, CMOS, ECL, PMOS/NMOS Low Power Consumption: 225 mW Industry Standard AM6012 Pinout Available In Die Form GENERAL DESCRIPTION
PIN CONNECTIONS 20-Pin Hermetic DIP (R-Suffix), 20-Pin Plastic DIP (P-Suffix), 20-Pin SOL (S-Suffix)
The DAC312 series of 12-bit multiplying digital-to-analog converters provide high speed with guaranteed performance to 0.012% differential nonlinearity over the full commercial operating temperature range. The DAC312 combines a 9-bit master D/A converter with a 3-bit (MSBs) segment generator to form an accurate 12-bit D/A converter at low cost. This technique guarantees a very uniform step size (up � 1/2 LSB from the ideal), monotonicity to 12-bits and integral nonlinearity 0.05% at its differential current outputs. In order to provide the same performance with 12-bit R-2R ladder design, an integral nonlinearity over temperature of 1/2 LSB (0.012%) would be required. The 250 ns settling time with low glitch energy and low power consumption are achieved by careful attention to the circuit design and stringent process controls. Direct interface with all popular logic families is achieved through the logic threshold terminal.
High compliance and low drift characteristics (as low as 10 ppm/�C) are also features of the DAC312 along with an excellent power supply rejection ratio of �.001% FS/%V. Operating over a power supply range 18 V the device consumes mW at the lower supply voltages with an absolute maximum dissipation mW at the higher supply levels. With their guaranteed specifications, single chip reliability and low cost, the DAC312 device makes excellent building blocks for A/D converters, data acquisition systems, video display drivers, programmable test equipment and other applications where low power consumption and complete input/output versatility are required.
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Parameter Resolution Monotonicity Differential Nonlinearity Full-Scale Current Full-Scale Tempco Symbol Conditions
15 V, IREF = 1.0 mA, TA +70C for DAC312E and TA +85C for DAC312F, DAC312H, unless otherwise noted. Output characteristics refer to both IOUT and IOUT.)Deviation from Ideal Step Size 2 Deviation from Ideal Straight Line1 VREF 10 k2
Output Voltage Compliance Full-Scale Symmetry Zero-Scale Current Settling Time Propagation Delay�All BitsVOC IFSS IZS tS tPLH tPHL RO COUT VIL VIH IIN VIS I15 dl/dt PSSI FS+ PSSIFS�
DNL Specification Guaranteed over Compliance Range |IFS|�|IFS| � 1/2 LSB, All Bits Switched or OFF1 All Bits Switched 50% Point Logic Swing to 50% Point Output1
Output Resistance Output Capacitance Logic Input Levels "0" Levels "1" Logic Input Current Logic Input Swing Reference Bias Current Reference Input Slew Rate Power Supply SensitivityPower Supply Range Power Supply Current
Parameter Reference Input Slew Rate Propagation Delay Settling Time Symbol dl/dt tPLH, tPHL tS Any Bit � 1/2 LSB, All Bits Switched ON or OFF. Conditions
Parameter Logic Input Levels "0" Logic Input Levels "1" Logic Input Current Logic Input Swing Reference Bias Current Reference Input Slew Rate Power Supply Sensitivity Power Supply Range Power Supply Current Power Dissipation Symbol Conditions
15 V, IREF = 1.0 mA, TA 70C for DAC312E and TA +85C for DAC312F, DAC312H, unless otherwise noted. Output characteristics refer to both IOUT and IOUT. Continued
NOTES 1 Guaranteed by design. = +25�C for DAC312H grade only. Specifications subject to change without notice.
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