Overview
The AD9731BRS is a 10-bit, 170 MSPS (Mega Samples Per Second) digital-to-analog converter (DAC) produced by Analog Devices Inc. This bipolar DAC is designed to provide high dynamic performance while offering lower power dissipation and economical pricing. It is optimized for demanding communications systems applications where wideband spurious-free dynamic range (SFDR) requirements are stringent. The AD9731BRS features internal reference and control amplifier, making it a robust solution for various high-speed applications.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Resolution | 10 | - | - | Bits |
| Max Conversion Rate | - | 170 | - | MSPS |
| Differential Nonlinearity (DNL) | 0.25 | 1 | - | LSB |
| Integral Nonlinearity (INL) | 0.6 | 1 | - | LSB |
| Zero-Scale Offset Error | 35 | - | 70 | mA |
| Full-Scale Gain Error | 2.5 | - | 5 | % FS |
| Internal Reference Voltage | -1.35 | -1.25 | -1.15 | V |
| Settling Time | - | 3.8 | - | ns |
| Operating Temperature | -40 | - | 85 | °C |
| Package | - | - | - | 28-SSOP or 28-PLCC |
Key Features
- TTL/High Speed CMOS-Compatible Inputs
- Wideband SFDR: 66 dB @ 2 MHz/50 dB @ 65 MHz
- Low Power: 439 mW @ 170 MSPS
- Fast Settling: 3.8 ns to 1/2 LSB
- Internal Reference and Control Amplifier
- Pin-Compatible, Lower Cost Replacement for Industry Standard AD9721 DAC
- Two Package Styles: 28-Lead SOIC and SSOP
Applications
- Digital Communications
- Direct Digital Synthesis
- Waveform Reconstruction
- High Speed Imaging
- 5 MHz to 65 MHz HFC Upstream Path
Q & A
- What is the resolution of the AD9731BRS DAC?
The AD9731BRS has a resolution of 10 bits. - What is the maximum conversion rate of the AD9731BRS?
The maximum conversion rate is 170 MSPS. - What are the typical operating temperatures for the AD9731BRS?
The operating temperature range is from -40°C to +85°C. - What is the power consumption of the AD9731BRS at 170 MSPS?
The power consumption is 439 mW at 170 MSPS. - Does the AD9731BRS have an internal reference?
Yes, the AD9731BRS includes an internal band gap reference. - What are the package options for the AD9731BRS?
The AD9731BRS is available in 28-Lead SOIC and SSOP packages. - What are some of the key applications for the AD9731BRS?
Key applications include digital communications, direct digital synthesis, waveform reconstruction, high-speed imaging, and HFC upstream paths. - Is the AD9731BRS RoHS compliant?
Yes, the AD9731BRS is RoHS compliant. - What is the settling time of the AD9731BRS?
The settling time is 3.8 ns to 1/2 LSB. - What is the SFDR performance of the AD9731BRS?
The SFDR is 66 dB @ 2 MHz and 50 dB @ 65 MHz.
