Overview
The AD9750AR is a 10-bit resolution, high-performance digital-to-analog converter (DAC) from Analog Devices Inc. It is part of the TxDAC series, which is optimized for the transmit signal path of communication systems. This DAC offers exceptional AC and DC performance, supporting update rates up to 125 MSPS. The AD9750AR is manufactured using an advanced CMOS process and features a segmented current source architecture combined with a proprietary switching technique to enhance dynamic performance. It includes edge-triggered input latches and a 1.2 V temperature-compensated bandgap reference, providing a complete monolithic DAC solution.
Key Specifications
| Parameter | Min | Typ | Max | Units |
|---|---|---|---|---|
| Resolution | 10 | Bits | ||
| Update Rate | 125 | MSPS | ||
| Integral Linearity Error (INL) | -1.0 | ±0.1 | +1.0 | LSB |
| Differential Nonlinearity (DNL) | -0.5 | ±0.1 | +0.5 | LSB |
| Analog Output Offset Error | -0.02 | +0.02 | % of FSR | |
| Gain Error (Without Internal Reference) | -2 | ±0.5 | +2 | % of FSR |
| Gain Error (With Internal Reference) | -5 | ±1.5 | +5 | % of FSR |
| Full-Scale Output Current | 2.0 | 20.0 | mA | |
| Output Compliance Range | 1.25 | V | ||
| Output Resistance | 100 kΩ | |||
| Reference Voltage | 1.14 | 1.20 | 1.26 | V |
| Power Dissipation | 190 mW @ 5 V | |||
| Power-Down Mode | 20 mW @ 5 V |
Key Features
- High-performance, 10-bit resolution DAC with an update rate of up to 125 MSPS.
- Segmented current source architecture and proprietary switching technique for enhanced dynamic performance.
- Edge-triggered input latches and a 1.2 V temperature-compensated bandgap reference.
- Differential current outputs supporting single-ended or differential applications.
- Flexible single-supply operating range of 4.5 V to 5.5 V.
- Low power dissipation of 190 mW at 5 V, with a power-down mode reducing standby power to approximately 20 mW.
- CMOS-compatible digital interface supporting +2.7 V and +5 V logic families.
- Available in 28-lead SOIC and TSSOP packages.
Applications
- Wideband communication transmit channels.
- Direct IF basestations.
- Wireless local loop.
- Digital radio links.
- Direct digital synthesis (DDS).
- Instrumentation.
Q & A
- What is the resolution of the AD9750AR DAC?
The AD9750AR has a 10-bit resolution.
- What is the maximum update rate of the AD9750AR?
The AD9750AR supports update rates up to 125 MSPS.
- What is the typical power dissipation of the AD9750AR at 5 V?
The typical power dissipation is 190 mW at 5 V.
- What are the package options for the AD9750AR?
The AD9750AR is available in 28-lead SOIC and TSSOP packages.
- Can the AD9750AR be used in differential output configurations?
- What is the output compliance range of the AD9750AR?
The output compliance range is 1.25 V.
- Does the AD9750AR have an internal reference voltage?
- What are the typical applications of the AD9750AR?
The AD9750AR is used in wideband communication, direct IF basestations, wireless local loop, digital radio links, direct digital synthesis (DDS), and instrumentation.
- How does the AD9750AR reduce power consumption?
The AD9750AR has a power-down mode that reduces standby power dissipation to approximately 20 mW at 5 V.
- What logic families are supported by the digital inputs of the AD9750AR?
The digital inputs support +2.7 V and +5 V CMOS logic families.
