LTC1657L Datasheet | Linear Technology

LTC1657/LTC1657L Parallel 16-Bit Rail-to-Rail Micropower DAC Features nn 16-Bit Monotonic Over Temperature nn Deglitched Rail-to-Rail Voltage Output: 8n V- s nn ICC: 650µA Typ nn Maximum DNL Error: ±1LSB nn Settling Time: 20µs to ±1LSB nn Built-In Reference: 2.048V (LTC1657) 1.25V (LTC1657L) nn Internal Power-On Reset to Zero Volts nn Asynchronous CLR Pin nn Output Buffer Configurable for Gain of 1 or 2 nn Parallel 16-Bit or 2-Byte Double Buffered Interface nn Multiplying Capability nn Narrow 28-Lead SSOP Package APPLICATIONS nn Instrumentation nn Digital Calibration nn Industrial Process Control nn Automatic Test Equipment nn munication Test Equipment DESCRIPTION The LTC®1657/LTC1657L are plete single supply, railto-rail voltage output, 16-bit digital-to-analog converters (DAC) in a 28-pin SSOP 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 full-scale 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 Corporation’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. L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. BLOCK DIAGRAM DATA IN FROM MICROPROCESSOR DATA BUS FROM MICROPROCESSOR DECODE LOGIC FROM SYSTEM RESET 19 D15 (MSB) 18 17 16 15 14 13 12 D8 11 D7 10 9 8 7 6 5 4 D0 (LSB) 3 CSMSB 1 WR 2 CSLSB 28 LDAC 27 CLR MSB...