Overview
The AD9764ARU, produced by Analog Devices Inc., is a 14-bit resolution member of the TxDAC series of high-performance, low-power CMOS digital-to-analog converters (DACs). This device is specifically optimized for the transmit signal path of communication systems and offers exceptional AC and DC performance. It supports update rates up to 125 MSPS and operates on a flexible single-supply range of 2.7 V to 5.5 V, making it well-suited for portable and low-power applications.
Key Specifications
| Parameter | Min | Typ | Max | Units |
|---|---|---|---|---|
| Resolution | - | 14 bits | - | - |
| Update Rate | - | - | 125 MSPS | - |
| Analog Supply Voltage (AVDD) | 2.7 V | - | 5.5 V | V |
| Digital Supply Voltage (DVDD) | 2.7 V | - | 5.5 V | V |
| Full-Scale Output Current | - | 20 mA | - | mA |
| Output Impedance | - | - | >100 kΩ | Ω |
| Logic '1' Voltage @ DVDD = +5 V | 3.5 V | - | 5 V | V |
| Logic '0' Voltage @ DVDD = +5 V | 0 V | - | 1.3 V | V |
| Input Capacitance | - | - | 5 pF | pF |
| Input Setup Time (tS) | - | - | 2.0 ns | ns |
| Input Hold Time (tH) | - | - | 1.5 ns | ns |
| Latch Pulsewidth (tLPW) | - | - | 3.5 ns | ns |
Key Features
- High-performance, low-power CMOS digital-to-analog converter with 14-bit resolution.
- Supports update rates up to 125 MSPS.
- Flexible single-supply operating range of 2.7 V to 5.5 V.
- Low power dissipation, with options to reduce power further to 45 mW.
- Power-down mode reduces standby power dissipation to approximately 25 mW.
- Current-output DAC with nominal full-scale output current of 20 mA and >100 kΩ output impedance.
- Differential current outputs support single-ended or differential applications.
- Edge-triggered input latches and a 1.2 V temperature-compensated bandgap reference.
- Internal control amplifier allows adjustment of full-scale current over a 2 mA to 20 mA range.
- Available in 28-lead SOIC and TSSOP packages.
Applications
- Communication systems: basestations, ADSL/HFC modems.
- Instrumentation.
- Portable and low-power applications.
Q & A
- What is the resolution of the AD9764ARU?
The AD9764ARU has a 14-bit resolution.
- What is the maximum update rate of the AD9764ARU?
The AD9764ARU supports update rates up to 125 MSPS.
- What is the operating voltage range of the AD9764ARU?
The AD9764ARU operates on a single supply voltage range of 2.7 V to 5.5 V.
- How much power does the AD9764ARU consume?
The AD9764ARU has low power dissipation, with options to reduce power further to 45 mW, and a power-down mode that reduces standby power to approximately 25 mW.
- What type of output does the AD9764ARU provide?
The AD9764ARU is a current-output DAC with a nominal full-scale output current of 20 mA and >100 kΩ output impedance.
- Can the AD9764ARU be used in differential applications?
- What is the package type of the AD9764ARU?
The AD9764ARU is available in 28-lead SOIC and TSSOP packages.
- What are some common applications of the AD9764ARU?
The AD9764ARU is commonly used in communication systems, instrumentation, and portable and low-power applications.
- How is the full-scale current of the AD9764ARU adjusted?
The full-scale current of the AD9764ARU can be adjusted over a 2 mA to 20 mA range using an external resistor.
- Does the AD9764ARU have an internal reference?
