Product Summary

The AD667KNZ is a complete voltage output 12-bit digital-to-analog converter including a high stability buried Zener voltage reference and double-buffered input latch on a single chip. The AD667KNZ uses 12 precision high speed bipolar current steering switches and a laser trimmed thin-film resistor network to provide fast settling time and high accuracy. Microprocessor compatibility is achieved by the on-chip doublebuffered latch. The design of the input latch allows direct interface to 4-, 8-, 12-, or 16-bit buses. The 12 bits of data from the first rank of latches can then be transferred to the second rank, avoiding generation of spurious analog output values. The AD667KNZ responds to strobe pulses as short as 100 ns, allowing use with the fastest available microprocessors.

Parametrics

AD667KNZ absolute maximum ratings: (1)VCC to Power Ground: 0 V to +18 V; (2)VEE to Power Ground: 0 V to –18 V; (3)Digital Inputs (Pins 11–15, 17–28); (4)to Power Ground: -1.0 V to +7.0 V; (5)Ref In to Reference Ground: ±12 V; (6)Bipolar Offset to Reference Ground: ±12 V; (7)10 V Span R to Reference Ground: ±12 V; (8)20 V Span R to Reference Ground: ±24 V; (9)Ref Out, VOUT: Indefinite Short to Power Ground: Momentary Short to VCC; (10)Power Dissipation: 1000 mW.

Features

AD667KNZ features: (1)Complete 12-Bit D/A Function, Double-Buffered Latch; On Chip Output Amplifier; High Stability Buried Zener Reference; (2)Single Chip Construction; (3)Monotonicity Guaranteed Over Temperature; (4)Linearity Guaranteed Over Temperature: 1/2 LSB max; (5)Settling Time: 3 ms max to 0.01%; (6)Guaranteed for Operation with 612 V or 615 V Supplies; (7)Low Power: 300 mW Including Reference; (8)TTL/5 V CMOS Compatible Logic Inputs; (9)Low Logic Input Currents; (10)MIL-STD-883 Compliant Versions Available.

Diagrams

AD667KNZ block diagram

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