LTC2757 SoftSpan Iout DAC

Analog Devices' LTC2757 is an 18-bit multiplying parallel-input, current- output digital-to-analog converter that provides full 18-bit performance, INL and DNL of ±1 LSB maximum, and over temperature without any adjustments. 18-bit monotonicity is guaranteed in all performance grades. This SoftSpan DAC operates from a single 3 V to 5 V supply and offers six output ranges (up to ±10 V) that can be programmed through the parallel interface or pin-strapped for operation in a single range.

In addition to its precision DC specifications, the LTC2757 also offers excellent AC specifications, including 2.1 μs full-scale settling to 1 LSB and 1.4 nV•s glitch impulse.

The LTC2757 uses a bidirectional input/output parallel interface that allows readback of any on-chip register, including DAC output-range settings; and a CLR pin and power-on reset circuit that each reset the DAC output to 0 V regardless of output range.

Features

Maximum 18-bit INL error: ±1 LSB overtemperature Program or pin-strap six output ranges: 0 V to 5 V, 0 V to 10 V, –2.5 V to 7.5 V, ±2.5 V, ±5 V, ±10 V Guaranteed monotonic overtemperature Low-glitch impulse 1.4 nV•s (3 V), 3 nV•s (5 V) 18-bit settling time: 2.1 μs 2.7 V to 5.5 V single supply operation Reference current constant for all codes Voltage-controlled offset and gain trims Parallel interface with readback of all registers Clear and power-on-reset to 0 V regardless of output range 48-Pin 7 mm × 7 mm LQFP package

Applications
Instrumentation Medical devices Automatic test equipment Process control and industrial automation