Overview
The AD9709ASTZ is a high-speed, dual-port, 2-channel, 8-bit CMOS digital-to-analog converter (DAC) produced by Analog Devices Inc. This device integrates two high-quality 8-bit TxDAC+ cores, a voltage reference, and digital interface circuitry into a compact 48-lead LQFP package. It is optimized for processing I and Q data in communications applications and offers exceptional AC and DC performance with update rates of up to 125 MSPS.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Resolution | 8-bit | |
| Update Rate | Up to 125 MSPS | |
| Supply Voltage | 3.3 V or 5 V | V |
| Power Consumption | 380 mW | mW |
| Full-Scale Current | 20 mA | mA |
| Full-Scale Current Matching | Within 0.1% | % |
| Package Type | 48-Lead LQFP (7mm x 7mm) | |
| Operating Temperature Range | -40°C to +85°C | °C |
Key Features
- Dual 8-bit TxDAC+ cores for high-speed conversion of I and Q data.
- Integrated voltage reference and digital interface circuitry.
- Flexible dual-port interface allowing dual or interleaved input data.
- Separate write inputs and clocks for independent control of each DAC port.
- Mode control pin for selecting between dual port and interleaved high-speed data port modes.
- Segmented current source architecture with proprietary switching technique to reduce glitch energy and maximize dynamic accuracy.
- Differential current output supporting single-ended or differential applications.
- Low power operation with sleep mode for reduced power consumption during idle periods.
- On-chip 1.20 V temperature-compensated band gap voltage reference.
Applications
The AD9709ASTZ is primarily optimized for communications applications, particularly those involving the processing of I and Q data. It is suitable for use in various high-speed transmission systems, including wireless communication systems, baseband processing, and other applications requiring high-speed DACs with low distortion and high accuracy.
Q & A
- What is the resolution and update rate of the AD9709ASTZ DAC?
The AD9709ASTZ has an 8-bit resolution and supports update rates of up to 125 MSPS.
- What is the supply voltage range for the AD9709ASTZ?
The AD9709ASTZ operates from a single supply of 3.3 V or 5 V.
- How much power does the AD9709ASTZ consume?
The AD9709ASTZ consumes 380 mW of power.
- What is the full-scale current of the AD9709ASTZ DACs?
The full-scale current for each DAC is 20 mA, with a matching of within 0.1% between the two DACs.
- What type of package does the AD9709ASTZ come in?
The AD9709ASTZ comes in a 48-Lead LQFP (7mm x 7mm) package.
- What is the operating temperature range of the AD9709ASTZ?
The operating temperature range is -40°C to +85°C.
- Does the AD9709ASTZ support single-ended or differential output?
The AD9709ASTZ supports both single-ended and differential output configurations.
- How does the AD9709ASTZ manage power consumption during idle periods?
The AD9709ASTZ has a sleep mode to reduce power consumption during idle periods.
- What is the purpose of the mode control pin on the AD9709ASTZ?
The mode control pin allows the AD9709ASTZ to interface to two separate data ports or to a single interleaved high-speed data port.
- What type of voltage reference does the AD9709ASTZ include?
The AD9709ASTZ includes a 1.20 V temperature-compensated band gap voltage reference.
