Overview
The AD9764ARURL7 is a 14-bit resolution member of the TxDAC® series of high-performance, low-power CMOS digital-to-analog converters (DACs) produced by Analog Devices Inc. This device is specifically optimized for the transmit signal path of communication systems and is part of a family that includes pin-compatible 8-, 10-, 12-, and 14-bit DACs. The AD9764 offers exceptional AC and DC performance, supporting update rates up to 125 MSPS. It operates on a flexible single-supply range of 2.7 V to 5.5 V, making it suitable for portable and low-power applications.
Key Specifications
| Parameter | Min | Typ | Max | Units |
|---|---|---|---|---|
| Resolution | 14 bits | |||
| Update Rate | Up to 125 MSPS | |||
| Supply Voltage Range | 2.7 | 5.5 | V | |
| Full-Scale Output Current | 2 | 20 | mA | |
| Output Impedance | >100 kΩ | |||
| Logic '1' Voltage @ DVDD = +5 V | 3.5 | 5 | V | |
| Logic '0' Voltage @ DVDD = +5 V | 0 | 1.3 | V | |
| Input Capacitance | 5 pF | |||
| Input Setup Time (tS) | 2.0 ns | |||
| Input Hold Time (tH) | 1.5 ns | |||
| Latch Pulsewidth (tLPW) | 3.5 ns | |||
Key Features
- Segmented current source architecture combined with proprietary switching technique to reduce spurious components and enhance dynamic performance.
- Edge-triggered input latches and a 1.2 V temperature-compensated bandgap reference for a complete monolithic DAC solution.
- Flexible supply options supporting +3 V and +5 V CMOS logic families.
- Differential current outputs to support single-ended or differential applications with matching between the two current outputs for enhanced dynamic performance.
- Full-scale output current adjustable from 2 mA to 20 mA via an external resistor.
- Power-down mode reducing standby power dissipation to approximately 25 mW.
- Available in 28-lead SOIC and TSSOP packages.
- Specified for operation over the industrial temperature range.
Applications
- Communication systems: basestations, ADSL/HFC modems.
- Instrumentation.
- Portable and low-power applications due to its flexible single-supply operating range and low power dissipation.
Q & A
- What is the resolution of the AD9764ARURL7 DAC?
The AD9764ARURL7 has a 14-bit resolution.
- What is the maximum update rate of the AD9764ARURL7?
The AD9764ARURL7 supports update rates up to 125 MSPS.
- What is the supply voltage range for the AD9764ARURL7?
The supply voltage range is from 2.7 V to 5.5 V.
- How is the full-scale output current of the AD9764ARURL7 adjusted?
The full-scale output current can be adjusted from 2 mA to 20 mA via an external resistor.
- What types of packages are available for the AD9764ARURL7?
The AD9764ARURL7 is available in 28-lead SOIC and TSSOP packages.
- What are the typical applications of the AD9764ARURL7?
Typical applications include communication systems, instrumentation, and portable/low-power applications.
- How does the AD9764ARURL7 reduce power dissipation?
The AD9764ARURL7 can reduce power dissipation to 45 mW by lowering the full-scale current output and has a power-down mode that reduces standby power dissipation to approximately 25 mW.
- What is the output impedance of the AD9764ARURL7?
The output impedance is greater than 100 kΩ.
- Can the AD9764ARURL7 be used in differential output configurations?
- What is the temperature range for the AD9764ARURL7?
The AD9764ARURL7 is specified for operation over the industrial temperature range.
