AD9705-EB datasheet(3/52 Pages) AD

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AD9704/AD9705/AD9706/AD9707

Rev. 0 | Page 3 of 52

GENERAL DESCRIPTION

The AD9704/AD9705/AD9706/AD9707 are the fourth-

generation family in the TxDAC series of high performance,

CMOS digital-to-analog converters (DACs). This pin-compatible,

8–/10–/12–/14–bit resolution family is optimized for low power

operation, while maintaining excellent dynamic performance.

The AD970x family is pin-compatible with the AD9748/AD9740/

AD9742/AD9744 family of TxDAC converters and is specifically

optimized for the transmit signal path of communication systems.

All of the devices share the same interface, LFCSP_VQ package,

and pinout, providing an upward or downward component

selection path based on performance, resolution, and cost.

The AD970x offers exceptional ac and dc performance, while

supporting update rates up to 175 MSPS.

The flexible power supply operating range of 1.7 V to 3.6 V and

low power dissipation of the AD970x parts make them well-suited

for portable and low power applications.

Power dissipation of the AD970x can be reduced to 15 mW, with

a small trade-off in performance, by lowering the full-scale

current output. In addition, a power-down mode reduces the

standby power dissipation to approximately 2.2 mW.

The AD970x has an optional serial peripheral interface (SPI) that

provides a higher level of programmability to enhance performance

of the DAC. An adjustable output, common-mode feature allows

for easy interfacing to other components that require common

modes greater than 0 V.

Edge-triggered input latches and a 1.0 V temperature-compensated

band gap reference have been integrated to provide a complete,

monolithic DAC solution. The digital inputs support 1.8 V and

3.3 V CMOS logic families.

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