Overview
The AD9708ARUZ is an 8-bit resolution digital-to-analog converter (DAC) from Analog Devices Inc., part of the high-performance, low-power TxDAC series. This CMOS DAC 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 device features a segmented current source architecture and proprietary switching techniques to enhance dynamic performance and reduce spurious components.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 8 bits |
| Update Rate | Up to 125 MSPS |
| Supply Voltage | 2.7 V to 5.5 V |
| Power Dissipation | 175 mW @ 5 V, 45 mW @ 3 V |
| Power-Down Mode | Approximately 20 mW @ 5 V |
| Output Current | Nominal full-scale output current of 20 mA |
| Output Impedance | > 100 kΩ |
| Output Voltage Compliance | 1.25 V |
| Package | 28-Lead TSSOP (4.4mm x 9.7mm) |
| Operating Temperature | Up to 85 °C |
Key Features
- Member of the pin-compatible TxDAC product family, allowing for easy component selection based on performance, resolution, and cost.
- Differential current outputs to support single-ended or differential applications.
- Edge-triggered input latches and a temperature-compensated bandgap reference for a complete monolithic DAC solution.
- Flexible supply options supporting +3 V and +5 V CMOS logic families.
- Fast settling time of 35 ns to 0.1% full-scale.
- On-chip 1.20 V reference and reference control amplifier for adjustable full-scale output current (2 mA to 20 mA).
- Low power dissipation with a power-down mode to reduce standby power to approximately 20 mW.
Applications
- Communications systems: Optimized for the transmit signal path in communication systems.
- Signal Reconstruction: Suitable for reconstructing signals in various communication and instrumentation applications.
- Instrumentation: Used in instrumentation applications requiring high performance and low power consumption.
Q & A
- What is the resolution of the AD9708ARUZ DAC?
The AD9708ARUZ has an 8-bit resolution.
- What is the maximum update rate of the AD9708ARUZ?
The AD9708ARUZ supports update rates up to 125 MSPS.
- What is the supply voltage range for the AD9708ARUZ?
The supply voltage range is from 2.7 V to 5.5 V.
- How much power does the AD9708ARUZ dissipate?
The power dissipation is 175 mW at 5 V and 45 mW at 3 V.
- What is the power consumption in power-down mode?
In power-down mode, the power consumption is approximately 20 mW at 5 V.
- What is the nominal full-scale output current of the AD9708ARUZ?
The nominal full-scale output current is 20 mA.
- What is the output impedance of the AD9708ARUZ?
The output impedance is greater than 100 kΩ.
- What package options are available for the AD9708ARUZ?
The AD9708ARUZ is available in a 28-Lead TSSOP package.
- What is the maximum operating temperature for the AD9708ARUZ?
The maximum operating temperature is up to 85 °C.
- Can the full-scale output current be adjusted?
Yes, the full-scale output current can be adjusted from 2 mA to 20 mA using an external resistor.
