Overview
The AD9755ASTZ is a high-performance, 14-bit CMOS Digital-to-Analog Converter (DAC) manufactured by Analog Devices Inc. This device is part of the TxDAC+ family and is designed for ultrahigh-speed applications. It features a dual, multiplexed input port architecture, allowing for flexible data input through either a single or dual port. The AD9755ASTZ integrates a high-quality 14-bit DAC core, a voltage reference, and digital interface circuitry within a compact 48-lead LQFP package. It supports update rates up to 300 MSPS, making it ideal for applications requiring high-speed data conversion.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Resolution | 14 | Bits | ||
| Conversion Rate | 300 | MSPS | ||
| Integral Linearity Error (INL) | -5 | +5 | LSB | |
| Differential Nonlinearity (DNL) | LSB | |||
| Supply Voltage | 3.0 | 3.3 | 3.6 | V |
| Power Dissipation | 155 | mW | ||
| Full-Scale Current | 2 | 20 | mA | |
| Settling Time | 0.011 | μs | ||
| Package Type | 48-Lead LQFP |
Key Features
- Ultrahigh speed conversion rate of up to 300 MSPS.
- Dual, multiplexed input ports for flexible data input.
- On-chip 1.2 V temperature-compensated band gap voltage reference.
- Single 3.3 V supply operation with low power dissipation of 155 mW.
- Differential current outputs supporting single-ended or differential applications.
- Internal clock doubling PLL and differential or single-ended clock input.
- Segmented current source architecture combined with proprietary switching technique to reduce glitch energy and maximize dynamic accuracy.
Applications
- Communications: LMDS, LMCS, MMDS base stations.
- Digital synthesis.
- QAM and OFDM modulation.
Q & A
- What is the resolution of the AD9755ASTZ DAC?
The AD9755ASTZ has a resolution of 14 bits.
- What is the maximum conversion rate of the AD9755ASTZ?
The maximum conversion rate is up to 300 MSPS.
- What type of package does the AD9755ASTZ come in?
The AD9755ASTZ comes in a 48-lead LQFP package.
- What is the power dissipation of the AD9755ASTZ?
The power dissipation is 155 mW at 3.3 V supply voltage.
- Does the AD9755ASTZ have an on-chip voltage reference?
Yes, it includes a 1.2 V temperature-compensated band gap voltage reference.
- What are the typical applications of the AD9755ASTZ?
Typical applications include communications (LMDS, LMCS, MMDS base stations), digital synthesis, and QAM and OFDM modulation.
- Can the AD9755ASTZ operate with a single-ended or differential clock input?
Yes, it supports both differential and single-ended clock inputs.
- What is the settling time of the AD9755ASTZ?
The settling time is 0.011 μs.
- How does the AD9755ASTZ reduce glitch energy and improve dynamic accuracy?
It uses a segmented current source architecture combined with a proprietary switching technique.
- Is the AD9755ASTZ RoHS compliant?
Yes, the AD9755ASTZ is RoHS compliant.
