AD9708ARZRL

Product Summary

The AD9708ARZRL is an 8-bit resolution member of the TxDAC series of high performance, low power CMOS digital-to-analog converter (DAC). The TxDAC family, which consists of pin compatible 8-, 10-, 12-, and 14-bit DACs, was specifically optimized for the transmit signal path of communication systems. All of the devices share the same interface options, small outline package and pinout, thus providing an upward or downward component selection path based on performance, resolution and cost. The AD9708ARZRL offers exceptional ac and dc performance while supporting update rates up to 125 MSPS. The AD9708ARZRL flexible single-supply operating range of +2.7 V to +5.5 V and low power dissipation are well suited for portable and low power applications. Its power dissipation can be further reduced to 45 mW, without a significant degradation in performance, by lowering the full-scale current output. In addition, a power-down mode reduces the standby power dissipation to approximately 20 mW. The AD9708ARZRL is manufactured on an advanced CMOS process. A segmented current source architecture is combined with a proprietary switching technique to reduce spurious components and enhance dynamic performance. Edge-triggered input latches and a temperature compensated bandgap reference have been integrated to provide a complete monolithic DAC solution. Flexible supply options support +3 V and +5 V CMOS logic families. The AD9708ARZRL is a current-output DAC with a nominal full-scale output current of 20 mA and > 100 KΩ output impedance. The AD9708ARZRL contains a 1.2 V on-chip reference and reference control amplifier, which allows the full-scale output current to be simply set by a single resistor. The AD9708ARZRL can be driven by a variety of external reference voltages. The AD9708ARZRL is available in 28-lead SOIC and 28-lead TSSOP packages. It is specified for operation over the industrial temperature range. The AD9708ARZRL can be used in communications, signal reconstruction, and instrumentation.

Parametrics

AD9708ARZRL absolute maximum ratings: (1)AVDD ACOM: –0.3 +6.5 V; (2)DVDD DCOM: –0.3 +6.5 V; (3)ACOM DCOM: –0.3 +0.3 V; (4)AVDD DVDD: –6.5 +6.5 V; (5)CLOCK, SLEEP DCOM: –0.3 DVDD + 0.3 V; (6)Digital Inputs DCOM: –0.3 DVDD + 0.3 V; (7)IOUTA, IOUTB ACOM: –1.0 AVDD + 0.3 V; (8)COMP1, COMP2 ACOM: –0.3 AVDD + 0.3 V; (9)REFIO, FSADJ ACOM: –0.3 AVDD + 0.3 V; (10)REFLO ACOM: –0.3 +0.3 V; (11)Junction Temperature: +150°C; (12)Storage Temperature: –65 +150°C; (13)Lead Temperature (10 sec): +300°C.

Features

AD9708ARZRL features: (1)Member of Pin-Compatible TxDAC Product Family; (2)125 MSPS Update Rate; (3)8-Bit Resolution; (4)Linearity: 1/4 LSB DNL; (5)Differential Current Outputs; (6)SINAD @ 5 MHz Output: 50 dB; (7)Power Dissipation: 175 mW @ 5 V to 45 mW @ 3 V; (8)Power-Down Mode: 20 mW @ 5 V; (9)On-Chip 1.20 V Reference; (10)Single +5 V or +3 V Supply Operation; (11)Packages: 28-Lead SOIC and 28-Lead TSSOP; (12)Edge-Triggered Latches; (13)Fast Settling: 35 ns Full-Scale Settling to 0.1%.

Diagrams