Overview
The AD9767ASTZ is a 14-bit, high-speed, dual-channel digital-to-analog converter (DAC) produced by Analog Devices Inc. It is part of the TxDAC+® family and is designed for high-performance applications requiring precise and fast analog signal generation. The AD9767 integrates two high-quality DAC cores, a voltage reference, and digital interface circuitry into a compact 48-lead LQFP package. This component is optimized for processing I and Q data in communications applications and offers exceptional AC and DC performance with update rates up to 125 MSPS.
Key Specifications
| Parameter | Value |
|---|---|
| Number of Channels | 2 |
| Converter Primary Function | High Speed DAC |
| DAC Type | Current Out |
| Data Input Format | Straight Binary |
| Interface | Parallel |
| Resolution | 14 bits |
| Update Rate | Up to 125 MSPS |
| Operating Temperature Range | -40°C to 85°C |
| Power Supply | 3.3 V to 5 V |
| Power Consumption | 380 mW @ 5 V |
| Package Type | 48-lead LQFP |
Key Features
- Dual 14-bit DACs with update rates up to 125 MSPS, optimized for low distortion performance and flexible transmission of I and Q information.
- Flexible dual-port interface allowing dual or interleaved input data.
- On-chip 1.20 V temperature-compensated band gap voltage reference.
- Gain matching of 0.1% of full scale and offset error better than 0.02%.
- Low power operation with 380 mW power consumption from a 3.3 V to 5 V single supply, and a sleep mode for low power idle periods.
- Differential current output supporting single-ended or differential applications.
- Segmented current source architecture combined with a proprietary switching technique to reduce glitch energy and maximize dynamic accuracy.
Applications
- Communications: Base stations, digital synthesis, and quadrature modulation.
- 3D ultrasound systems.
- Any application requiring high-speed, high-accuracy analog signal generation.
Q & A
- What is the resolution of the AD9767ASTZ DAC?
The AD9767ASTZ has a resolution of 14 bits.
- What is the maximum update rate of the AD9767ASTZ?
The maximum update rate is up to 125 MSPS.
- What is the operating temperature range of the AD9767ASTZ?
The operating temperature range is -40°C to 85°C.
- How much power does the AD9767ASTZ consume?
The AD9767ASTZ consumes 380 mW of power at 5 V.
- What type of package does the AD9767ASTZ come in?
The AD9767ASTZ comes in a 48-lead LQFP package.
- Can the AD9767ASTZ be used in single-ended or differential applications?
- How is the gain of the AD9767ASTZ controlled?
The gain can be controlled using either two external resistors for independent DACs or a single external resistor for both DACs.
- What is the full-scale current of the AD9767ASTZ?
The full-scale current is nominally 20 mA, with matching between the two DACs within 0.1%.
- Does the AD9767ASTZ have an on-chip voltage reference?
- Can the AD9767ASTZ operate in a power-down mode?
