Overview
The AD9764ARZ is a 14-bit, high-performance digital-to-analog converter (DAC) from Analog Devices Inc., part of the TxDAC® series. This device is 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 suitable for portable and low-power applications. The AD9764ARZ features a segmented current source architecture combined with a proprietary switching technique to enhance dynamic performance and reduce spurious components.
Key Specifications
| Parameter | Min | Typ | Max | Units |
|---|---|---|---|---|
| Resolution | 14 bits | |||
| Update Rate | Up to 125 MSPS | |||
| Supply Voltage | 2.7 | 5.5 | V | |
| Full-Scale Output Current | 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 | ||
| Package Type | 28-Lead SOIC, 28-Lead TSSOP | |||
Key Features
- High-performance, low-power CMOS DAC optimized for communication systems.
- Segmented current source architecture with proprietary switching technique for enhanced dynamic performance.
- Edge-triggered input latches and a 1.2 V temperature-compensated bandgap reference.
- Differential current outputs supporting single-ended or differential applications.
- Flexible supply options supporting +3 V and +5 V CMOS logic families.
- Power-down mode reducing standby power dissipation to approximately 25 mW.
- Full-scale current adjustable from 2 mA to 20 mA via an external resistor.
Applications
- Communication systems: basestations, ADSL/HFC modems.
- Instrumentation.
- Portable and low-power applications.
Q & A
- What is the resolution of the AD9764ARZ?
The AD9764ARZ has a 14-bit resolution.
- What is the maximum update rate of the AD9764ARZ?
The AD9764ARZ supports update rates up to 125 MSPS.
- What is the operating voltage range of the AD9764ARZ?
The AD9764ARZ operates on a single supply voltage range of 2.7 V to 5.5 V.
- What is the full-scale output current of the AD9764ARZ?
The nominal full-scale output current is 20 mA.
- What are the package options for the AD9764ARZ?
The AD9764ARZ is available in 28-Lead SOIC and 28-Lead TSSOP packages.
- How does the AD9764ARZ reduce power consumption?
The AD9764ARZ has a power-down mode that reduces standby power dissipation to approximately 25 mW. Additionally, power dissipation can be reduced by lowering the full-scale current output.
- What is the output impedance of the AD9764ARZ?
The output impedance is greater than 100 kΩ.
- Can the AD9764ARZ be used in differential applications?
- How is the full-scale current adjusted in the AD9764ARZ?
The full-scale current can be adjusted from 2 mA to 20 mA via an external resistor.
- What are some common applications of the AD9764ARZ?
