Overview
The DAC902E/2K5 is a high-speed, 12-bit Digital-to-Analog Converter (DAC) from Texas Instruments, part of the SpeedPlus Family of high-performance converters. This DAC is designed to offer excellent dynamic performance and is particularly suited for various high-speed applications. It features a small geometry CMOS process, allowing operation on a wide single-supply range of +2.7V to +5.5V, making it suitable for portable and battery-operated systems. The DAC902E/2K5 is available in both SO-28 and TSSOP-28 packages, ensuring versatility in design and implementation.
Key Specifications
| Parameter | Value |
|---|---|
| Number of Bits | 12 |
| Sampling Rate | 200 MS/s |
| Number of Channels | 1 |
| Settling Time | 30 ns |
| Interface Type | Parallel |
| Supply Voltage | +2.7V to +5.5V |
| Supply Current (Max) | 30 mA |
| Operating Temperature Range | -40°C to 85°C |
| Package Type | TSSOP-28, SO-28 |
| Output Compliance | Up to 1.25V |
| Output Current Range | 2mA to 20mA |
| Power Consumption (Max) | 170 mW at +5V |
| Standby Power | 45 mW |
Key Features
- SINGLE +5V OR +3V OPERATION: Compatible with both +3V and +5V CMOS logic families.
- HIGH SFDR: 67dBc at 5MHz output at 100MSPS, ensuring high dynamic performance.
- LOW GLITCH: 3pV-s, minimizing output distortion.
- LOW POWER: 170mW at +5V, suitable for portable and battery-operated systems.
- INTERNAL REFERENCE: Optional external reference and adjustable full-scale range.
- DIFFERENTIAL OUTPUTS: Allows for both differential and single-ended analog signal interfaces.
- POWER-DOWN MODE: Reduces standby power to 45mW for noncontinuous operation.
Applications
- COMMUNICATION TRANSMIT CHANNELS: Wireless Local Loop (WLL), cellular base stations, digital microwave links, and cable modems.
- WAVEFORM GENERATION: Direct Digital Synthesis (DDS) and Arbitrary Waveform Generation (ARB).
- MEDICAL/ULTRASOUND: High-speed medical imaging and diagnostic equipment.
- HIGH-SPEED INSTRUMENTATION AND CONTROL: Precision measurement and control systems.
- VIDEO, DIGITAL TV: High-definition video and digital television applications.
Q & A
- What is the resolution of the DAC902E/2K5?
The DAC902E/2K5 has a 12-bit resolution.
- What is the maximum sampling rate of the DAC902E/2K5?
The maximum sampling rate is 200 MS/s.
- What are the supported supply voltages for the DAC902E/2K5?
The DAC902E/2K5 can operate on a single supply voltage ranging from +2.7V to +5.5V.
- What is the settling time of the DAC902E/2K5?
The settling time is 30 ns).
- What types of packages are available for the DAC902E/2K5?
The DAC902E/2K5 is available in TSSOP-28 and SO-28 packages).
- What is the maximum output compliance of the DAC902E/2K5?
The maximum output compliance is up to 1.25V).
- Can the DAC902E/2K5 be used in battery-operated systems?
Yes, it is suitable for battery-operated systems due to its low power consumption).
- What is the standby power consumption of the DAC902E/2K5 in power-down mode?
The standby power consumption is 45 mW).
- Does the DAC902E/2K5 support both internal and external references?
Yes, it supports both internal and external references, with an adjustable full-scale range).
- What are some common applications of the DAC902E/2K5?
Common applications include communication transmit channels, waveform generation, medical/ultrasound, high-speed instrumentation and control, and video/digital TV).
