AD9708ARUZRL7

The AD9708 is part of the TxDAC™ family of high-performance, low-power CMOS digital-to-analog converters (DACs) with 8-bit resolution. The TxDAC™ series consists of pin-compatible 8, 10, 12, and 14-bit DACs optimized for the transmit signal path of communication systems. All devices use the same interface options, small packages, and pinouts, allowing for the right device selection up or down based on performance, resolution, and cost. The AD9708 provides excellent AC and DC performance while supporting update rates up to 125 MSPS.

The AD9708 features a flexible single-supply operating voltage range (2.7 V to 5.5 V) and low power consumption, making it ideal for portable and low-power applications. By reducing the full-scale current output, power consumption can be further reduced to 45 mW without significant performance degradation. In addition, standby power consumption can be reduced to about 20 mW in power-saving mode.

The AD9708 is manufactured using an advanced CMOS process. The segmented current source architecture combined with proprietary switching technology reduces stray components and enhances dynamic performance. The device also integrates an edge-triggered input latch and a temperature-compensated bandgap reference to provide a complete single-chip DAC solution. Flexible power options support +3 V and +5 V CMOS logic families.

The AD9708 is a current output DAC with a nominal full-scale output current of 20 mA and an output impedance greater than 100 kΩ.

It provides differential current output to support single-ended or differential applications. The current output can be connected directly to an output resistor to provide two complementary single-ended voltage outputs. Compatible output voltages range from 1.25 V.

The AD9708 has a built-in 1.2 V on-chip reference and a voltage reference control amplifier that makes it easy to set the full-scale output current with a single resistor. The device can be driven with a variety of external voltage references. Its full-scale current can be adjusted from 2 mA to 20 mA, and dynamic performance is not compromised. As a result, the AD9708 is able to operate at low power levels or be regulated over the 20 dB range, further providing gain range adjustment capabilities.

The AD9708 is available in a 28-pin SOIC package and is rated over the industrial temperature range.