Product Summary
The AD7849CR is a 14-bit/16-bit serial input multiplying DAC. The AD7849CR architecture ensures excellent differential linearity performance, and monotonicity is guaranteed to 14 bits for the A grade and to 16 bits for all other grades over the specified temperature ranges. During power-up and power-down sequences (when the supply voltages are changing), the VOUT pin is clamped to 0 V via a low impedance path. To prevent the output of A3 being shorted to 0 V during this time, transmission gate G1 is also opened. The AD7849CR has a versatile serial interface structure and can be controlled over three lines to facilitate opto-isolator applications. SDOUT is the output of the on-chip shift register and can be used in a daisy-chain fashion to program devices in the multichannel system. The DCEN (Daisy Chain Enable) input controls this function. Applications are (1)Industrial Process Control; (2)PC Analog I/O Boards; (3)Instrumentation.
Parametrics
AD7849CR absolute maximum ratings: (1)Supply Voltage: -0.3 V to +4.6 V; (2)Input Voltage: -0.5 V to VDD + 0.5 V; (3)Output Voltage Swing: -0.5 V to VDD + 0.5 V; (4)Operating Temperature Range (Ambient): -40° C to +85°C; (5)Storage Temperature Range: -65°C to +150°C; (6)Lead Temperature (5 sec)TQFP: +280°C.
Features
AD7849CR features: (1)14-Bit/16-Bit Multiplying DAC; (2)Guaranteed Monotonicity; (3)Output Control on Power-Up and Power-Down Internal or External Control; (4)Versatile Serial Interface; (5)DAC Clears to 0 V in Both Unipolar and Bipolar Output Ranges.
Diagrams
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![]() IC DAC 16BIT SRL INP 20-SOIC |
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![]() AD7849CR-REEL |
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![]() IC DAC 16BIT SRL INP 20-SOIC |
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![]() AD7849CRZ |
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![]() IC DAC 14/16BIT SRL-IN 20-SOIC |
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![]() AD7849CRZ-REEL |
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![]() IC DAC 14/16BIT SRL-IN 20-SOIC |
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