Overview
The AD9753ASTRL is a high-speed, single-channel, 12-bit CMOS Digital-to-Analog Converter (DAC) produced by Analog Devices Inc. This component is part of the TxDAC+ family and is designed for ultrahigh speed applications, supporting conversion rates up to 300 Mega Samples Per Second (MSPS). The AD9753 integrates a high-quality 12-bit TxDAC+ core, a voltage reference, and advanced digital interface circuitry, making it ideal for demanding applications in communications and other high-speed systems.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Resolution | - | 12 | - | Bits |
| Supply Voltage | 3.0 | 3.3 | 3.6 | V |
| Power Consumption | - | 155 | - | mW |
| Maximum Output Update Rate (fDAC) | - | 300 | - | MSPS |
| Output Settling Time (tST) to 0.1% | - | 11 | - | ns |
| Output Propagation Delay (tPD) | - | 1 | - | ns |
| Glitch Impulse | - | 5 | - | pV-s |
| Output Rise Time (10% to 90%) | - | 2.5 | - | ns |
| Output Fall Time (10% to 90%) | - | 2.5 | - | ns |
| Output Noise (IOUTFS = 20 mA) | - | 50 | - | pA/√Hz |
| Integral Linearity Error (INL) | -1.5 | ±0.5 | +1.5 | LSB |
| Differential Nonlinearity (DNL) | -1 | ±0.4 | +1 | LSB |
Key Features
- Ultrahigh speed conversion rate of up to 300 MSPS.
- Dual 12-bit latched, multiplexed input ports allowing for flexible digital interface configurations.
- Low power consumption of 155 mW from a single 3.0 V to 3.6 V supply.
- On-chip 1.20 V temperature-compensated band gap voltage reference.
- Segmented current source architecture combined with proprietary switching techniques to reduce glitch energy and maximize dynamic accuracy.
- Differential current outputs supporting single-ended or differential applications with full-scale current adjustable from 2 mA to 20 mA.
- PLL capability to drive the DAC latch at twice the speed of the externally applied clock, enabling data interleaving.
- CLK inputs can be driven differentially or single-ended with a signal swing as low as 1 V P-P.
Applications
- Communications systems, including base stations and wireless infrastructure.
- Digital synthesis and quadrature modulation.
- High-speed data acquisition and signal processing.
- Radar and military communication systems.
- Medical imaging, such as 3D ultrasound.
Q & A
- What is the maximum conversion rate of the AD9753?
The AD9753 supports a maximum conversion rate of up to 300 MSPS.
- What is the resolution of the AD9753?
The AD9753 has a resolution of 12 bits.
- What is the power consumption of the AD9753?
The AD9753 consumes 155 mW of power from a single 3.0 V to 3.6 V supply.
- Does the AD9753 have an on-chip voltage reference?
Yes, the AD9753 includes a 1.20 V temperature-compensated band gap voltage reference.
- How can the full-scale current of the AD9753 be adjusted?
The full-scale current can be adjusted from 2 mA to 20 mA via an external resistor.
- What is the output settling time of the AD9753?
The output settling time to 0.1% is 11 ns.
- Can the AD9753 be used in differential or single-ended configurations?
Yes, the AD9753 supports both differential and single-ended output configurations.
- What is the glitch impulse of the AD9753?
The glitch impulse is 5 pV-s.
- How does the PLL in the AD9753 enhance its operation?
The PLL drives the DAC latch at twice the speed of the externally applied clock, enabling data interleaving and doubling the output data rate.
- What are some typical applications of the AD9753?
The AD9753 is typically used in communications systems, digital synthesis, quadrature modulation, high-speed data acquisition, and medical imaging such as 3D ultrasound.
