The AD9762 is the 12-bit resolution member of the TxDACseries of high performance, low power CMOS digital-to-analogconverters (DACs). The TxDAC family which consists of pincompatible 8-, 10-, 12-, and 14-bit DACs is specifically optimizedfor the transmit signal path of communication systems.All of the devices share the same interface options, small outlinepackage and pinout, thus providing an upward or downwardcomponent selection path based on performance, resolution andcost. The AD9762 offers exceptional ac and dc performancewhile supporting update rates up to 125 MSPS.The AD9762’s flexible single-supply operating range of 2.7 V to5.5 V and low power dissipation are well suited for portable andlow power applications. Its power dissipation can be furtherreduced to a mere 45 mW without a significant degradation inperformance by lowering the full-scale current output. Also, apower-down mode reduces the standby power dissipation toapproximately 25 mW.The AD9762 is manufactured on an advanced CMOS process.A segmented current source architecture is combined with aproprietary switching technique to reduce spurious componentsand enhance dynamic performance. Edge-triggered inputlatches and a 1.2 V temperature compensated bandgap referencehave been integrated to provide a complete monolithicDAC solution. Flexible supply options support +3 V and +5 VCMOS logic families.The AD9762 is a current-output DAC with a nominal full-scaleoutput current of 20 mA and > 100 kΩ output impedance.TxDAC is a registered trademark of Analog Devices, Inc.*Patent pending.
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