Overview
The AD9764ARUZRL7 is a 14-bit, high-performance, low-power CMOS digital-to-analog converter (DAC) produced by Analog Devices Inc. It is part of the TxDAC series, which is optimized for the transmit signal path of communication systems. The AD9764 offers exceptional AC and DC performance, supporting update rates up to 125 MSPS. It features a flexible single-supply operating range of 2.7 V to 5.5 V, making it suitable for portable and low-power applications. The device is available in a 28-lead TSSOP package and is specified for operation over the industrial temperature range.
Key Specifications
| Parameter | Min | Typ | Max | Units |
|---|---|---|---|---|
| Resolution | 14 bits | |||
| Update Rate | Up to 125 MSPS | |||
| Full-Scale Output Current | 2 | 20 | 20 | mA |
| Output Impedance | >100 kΩ | |||
| Analog Supply Voltage (AVDD) | 2.7 | 5.5 | V | |
| Digital Supply Voltage (DVDD) | 2.7 | 5.5 | V | |
| 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
- High-performance, low-power CMOS DAC with 14-bit resolution.
- Supports update rates up to 125 MSPS.
- Flexible single-supply operation from 2.7 V to 5.5 V.
- Low power dissipation, with options to reduce power further by lowering the full-scale current output.
- Differential current outputs with >100 kΩ output impedance.
- Segmented current source architecture combined with proprietary switching technique for enhanced dynamic performance.
- Edge-triggered input latches and a 1.2 V temperature-compensated bandgap reference.
- Adjustable full-scale current output from 2 mA to 20 mA via an external resistor.
- Available in 28-lead TSSOP package.
Applications
- Communication systems: basestations, ADSL/HFC modems.
- Instrumentation.
- Portable and low-power applications.
Q & A
- What is the resolution of the AD9764ARUZRL7 DAC?
The AD9764ARUZRL7 has a 14-bit resolution.
- What is the maximum update rate of the AD9764ARUZRL7?
The AD9764ARUZRL7 supports update rates up to 125 MSPS.
- What is the full-scale output current range of the AD9764ARUZRL7?
The full-scale output current can be adjusted from 2 mA to 20 mA.
- What are the supply voltage ranges for the AD9764ARUZRL7?
The analog and digital supply voltages (AVDD and DVDD) can operate independently over a range of 2.7 V to 5.5 V.
- What type of package is the AD9764ARUZRL7 available in?
The AD9764ARUZRL7 is available in a 28-lead TSSOP package.
- What are the key applications of the AD9764ARUZRL7?
The key applications include communication systems, instrumentation, and portable and low-power applications.
- How can the power dissipation of the AD9764ARUZRL7 be reduced?
The power dissipation can be reduced by lowering the full-scale current output or by using the power-down mode.
- What is the output impedance of the AD9764ARUZRL7?
The output impedance is greater than 100 kΩ.
- Can the AD9764ARUZRL7 be driven by an external reference voltage?
- What is the temperature range for the AD9764ARUZRL7?
The AD9764ARUZRL7 is specified for operation over the industrial temperature range.
