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Parallel 16-Bit Rail-to-Rail Micropower DAC
Linear Technology Inc.
Description
The LTC1657/LTC1657L are complete single supply, rail-to-rail voltage output, 16-bit analog-to-digital converters (DAC) in a 28-pin SSOP or PDIP package. They include a rail-to-rail output buffer amplifier, an internal reference and a double buffered parallel digital interface. The LTC1657/LTC1657L have separate reference input pins that can be driven by an external reference. The fullscale output can be 1 or 2 times the reference voltage depending on how the X1/X2 pin is connected. The LTC1657 operates from a 4.5V to 5.5V supply and has an onboard 2.048V reference. The LTC1657L operates from a 2.7V to 5.5V supply and has an onboard 1.25V reference. The LTC1657/LTC1657L are similar to Linear Technology Corporations's LTC1450/LTC1450L 12-bit VOUT DAC family, allowing an upgrade path. They are the only buffered 16-bit parallel DACs in a 28-lead SSOP package and include an onboard reference for stand alone performance.
Features
16-Bit Monotonic Over Temperature Deglitched Rail-to-Rail Voltage Output: 8nV·s ICC: 650µA Typ Maximum DNL Error: ±1LSB Settling Time: 20µs to ±1LSB Built-In Reference: 2.048V (LTC1657) 1.25V (LTC1657L) Internal Power-On Reset to Zero Volts Asynchronous CLR Pin Output Buffer Configurable for Gain of 1 or 2 Parallel 16-Bit or 2-Byte Double Buffered Interface Narrow 28-Lead SSOP Package Multiplying Capability
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