Overview
The AD9708ARU is an 8-bit, high-performance, low-power CMOS digital-to-analog converter (DAC) produced by Analog Devices Inc. It is part of the TxDAC series, which includes pin-compatible 8-, 10-, 12-, and 14-bit DACs. The AD9708 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 single supply voltage ranging from 2.7 V to 5.5 V, making it suitable for both portable and low-power applications.
Key Specifications
| Parameter | Min | Typ | Max | Units |
|---|---|---|---|---|
| Resolution | 8 | Bits | ||
| Update Rate | 125 | MSPS | ||
| Integral Linearity Error (INL) | -1/2 | -1/4 | +1/2 | LSB |
| Differential Nonlinearity (DNL) | -1/2 | -1/4 | +1/2 | LSB |
| Full-Scale Output Current | 2.0 | 20.0 | mA | |
| Output Compliance Range | 1.0 | 1.25 | V | |
| Output Resistance | >100 kΩ | |||
| Power Dissipation (at 5 V) | 175 | mW | ||
| Power Dissipation (at 3 V) | 45 | mW | ||
| Power-Down Mode | 20 | mW |
Key Features
- Member of the pin-compatible TxDAC product family with 8-, 10-, 12-, and 14-bit resolutions.
- High update rate of up to 125 MSPS.
- 8-bit resolution with linearity: 1/4 LSB DNL and INL.
- Differential current outputs supporting single-ended or differential applications.
- On-chip 1.20 V reference and reference control amplifier.
- Single +5 V or +3 V supply operation with flexible supply options.
- Edge-triggered latches and fast settling time of 35 ns to 0.1% full-scale settling.
- Power-down mode reducing standby power dissipation to approximately 20 mW.
- Available in 28-lead SOIC and 28-lead TSSOP packages.
Applications
- Communications: Optimized for the transmit signal path in communication systems.
- Signal Reconstruction: Supports high-speed signal reconstruction.
- Instrumentation: Used in various instrumentation applications requiring high accuracy and speed.
Q & A
- What is the resolution of the AD9708ARU?
The AD9708ARU has an 8-bit resolution.
- What is the maximum update rate of the AD9708ARU?
The AD9708ARU supports update rates up to 125 MSPS.
- What is the full-scale output current range of the AD9708ARU?
The full-scale output current can be set from 2 mA to 20 mA via an external resistor.
- What are the power supply options for the AD9708ARU?
The AD9708ARU can operate on a single supply voltage ranging from 2.7 V to 5.5 V.
- What is the output compliance range of the AD9708ARU?
The output compliance range is 1.0 V to 1.25 V.
- Does the AD9708ARU have a power-down mode?
Yes, the AD9708ARU has a power-down mode that reduces standby power dissipation to approximately 20 mW.
- What are the package options for the AD9708ARU?
The AD9708ARU is available in 28-lead SOIC and 28-lead TSSOP packages.
- What is the settling time of the AD9708ARU?
The settling time is 35 ns to 0.1% full-scale settling.
- Does the AD9708ARU have on-chip reference and reference control amplifier?
Yes, the AD9708ARU contains a 1.20 V on-chip reference and reference control amplifier.
- What are the typical applications of the AD9708ARU?
The AD9708ARU is typically used in communications, signal reconstruction, and instrumentation applications.
