Overview
The AD9755ASTZRL is a high-performance, 14-bit, single-channel, ultrahigh-speed digital-to-analog converter (DAC) produced by Analog Devices Inc. This device is part of the TxDAC+ family and is optimized for applications requiring high-speed data conversion. The AD9755 integrates a high-quality 14-bit DAC core, a voltage reference, and digital interface circuitry into a compact 48-lead LQFP package. It supports update rates up to 300 MSPS, making it suitable for demanding applications in communications and digital synthesis.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Resolution | 14 | - | - | Bits |
| Supply Voltage | 3.0 | - | 3.6 | V |
| Power Dissipation | - | - | 155 | mW @ 3.3 V |
| Update Rate | - | - | 300 | MSPS |
| Settling Time | - | 11 | - | ns |
| Integral Linearity Error (INL) | -5 | ±2.5 | +5 | LSB |
| Differential Nonlinearity (DNL) | -1 | ±0.5 | +1 | LSB |
| Full-Scale Current | 2 | - | 20 | mA |
| On-Chip Voltage Reference | 1.20 | - | - | V |
Key Features
- Ultrahigh speed conversion rate up to 300 MSPS.
- Dual 14-bit latched, multiplexed input ports for flexible data input.
- On-chip 1.20 V temperature-compensated band gap voltage reference.
- Single 3.3 V supply operation with low power consumption 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 AD9755ASTZRL DAC?
The AD9755ASTZRL has a resolution of 14 bits. - What is the maximum update rate of the AD9755ASTZRL?
The maximum update rate is up to 300 MSPS. - What is the supply voltage range for the AD9755ASTZRL?
The supply voltage range is from 3.0 V to 3.6 V. - What is the power dissipation of the AD9755ASTZRL at 3.3 V?
The power dissipation is 155 mW at 3.3 V. - Does the AD9755ASTZRL have an on-chip voltage reference?
Yes, it includes a 1.20 V temperature-compensated band gap voltage reference. - What is the settling time of the AD9755ASTZRL?
The settling time is typically 11 ns. - What are the key applications of the AD9755ASTZRL?
Key applications include communications (LMDS, LMCS, MMDS base stations), digital synthesis, and QAM and OFDM modulation. - Does the AD9755ASTZRL support differential or single-ended outputs?
Yes, it supports both differential and single-ended outputs. - What is the full-scale current range of the AD9755ASTZRL?
The full-scale current range is from 2 mA to 20 mA. - Is the AD9755ASTZRL part of a pin-compatible family of DACs?
Yes, it is part of a pin-compatible family of high-speed TxDAC+s providing 10-, 12-, and 14-bit resolution.
