Overview
The AD9764ARURL, produced by Analog Devices Inc., is a 14-bit, high-performance digital-to-analog converter (DAC) that is part of the TxDAC family. This family includes pin-compatible 8-, 10-, 12-, and 14-bit DACs, optimized for the transmit signal path in communication systems. 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 both portable and low-power applications. The device features a segmented current source architecture and proprietary switching techniques to enhance dynamic performance and reduce spurious components.
Key Specifications
| Parameter | Min | Typ | Max | Units |
|---|---|---|---|---|
| Resolution | 14 bits | |||
| Update Rate | 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
- Member of the pin-compatible TxDAC product family, allowing for easy component selection based on performance, resolution, and cost.
- High update rate of up to 125 MSPS, suitable for high-speed communication systems.
- Flexible single-supply operation from 2.7 V to 5.5 V, supporting both +3 V and +5 V CMOS logic families.
- Low power dissipation, with the ability to reduce power to 45 mW by lowering the full-scale current output, and a power-down mode reducing standby power to approximately 25 mW.
- Segmented current source architecture and proprietary switching techniques to enhance dynamic performance and reduce spurious components.
- Differential current outputs with high output impedance (>100 kΩ), suitable for single-ended or differential applications.
- On-chip reference and control amplifier for maximum accuracy and flexibility, allowing the full-scale current to be adjusted from 2 mA to 20 mA.
- Available in 28-lead SOIC and TSSOP packages.
Applications
- Communication systems: basestations, ADSL/HFC modems.
- Instrumentation: high-speed data acquisition and signal generation.
- Portable and low-power applications: devices requiring high performance with low power consumption.
Q & A
- What is the resolution of the AD9764ARURL?
The AD9764ARURL has a resolution of 14 bits.
- What is the maximum update rate of the AD9764ARURL?
The maximum update rate is up to 125 MSPS.
- What is the supply voltage range for the AD9764ARURL?
The supply voltage range is from 2.7 V to 5.5 V.
- How can the full-scale output current of the AD9764ARURL be adjusted?
The full-scale output current can be adjusted from 2 mA to 20 mA via an external resistor and the on-chip reference and control amplifier.
- What types of packages are available for the AD9764ARURL?
The device is available in 28-lead SOIC and TSSOP packages.
- What are the typical applications of the AD9764ARURL?
Typical applications include communication systems, instrumentation, and portable or low-power devices.
- How does the AD9764ARURL reduce power consumption?
The device can reduce power consumption to 45 mW by lowering the full-scale current output and has a power-down mode that reduces standby power to approximately 25 mW.
- What is the output impedance of the AD9764ARURL?
The output impedance is greater than 100 kΩ.
- Can the AD9764ARURL be used in differential applications?
Yes, it provides differential current outputs suitable for single-ended or differential applications.
- What is the temperature range for the AD9764ARURL?
The device is specified for operation over the industrial temperature range.
