Overview
The AD9761ARS is a high-speed, low-power, dual-channel 10-bit digital-to-analog converter (DAC) manufactured by Analog Devices Inc. This component is designed for high-performance applications requiring precise and fast analog signal generation. It is particularly suited for use in wide bandwidth communication applications, such as spread spectrum systems, where digital I and Q information is processed during transmit operations.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Number of Bits | 10 | |
| Number of D/A Converters | 2 | |
| Settling Time | 35 ns (Typ) | |
| Output Type | Current – Unbuffered | |
| Differential Output | Yes | |
| Data Interface | Parallel | |
| Reference Type | External, Internal | |
| Voltage-Supply Analog | 3 V ~ 5.5 V | |
| Voltage-Supply Digital | 2.7 V ~ 5.5 V | |
| Integral Nonlinearity (INL) | ±0.7 LSB | |
| Differential Nonlinearity (DNL) | ±0.5 LSB | |
| Maximum Output Update Rate | 40 MSPS | |
| Operating Temperature | -40°C ~ 85°C | |
| Package | 28-SSOP (0.209, 5.30mm Width) |
Key Features
- Dual 10-bit, 40 MSPS DACs optimized for low distortion performance, ideal for transmitting I and Q information in communication systems.
- Dual 2x interpolation filters with 62.5 dB stop-band rejection, reducing the need for additional reconstruction filter requirements.
- Low power consumption: operates on a single supply from 3 V to 5.5 V, consuming 200 mW at 40 MSPS.
- On-chip 1.20 V temperature-compensated band gap voltage reference.
- Excellent gain and offset matching, ensuring high signal integrity.
- Supports parallel data interface and includes digital input interface circuitry.
- Sleep mode for power reduction during idle periods.
Applications
The AD9761ARS is versatile and finds application in several industries:
- Telecommunications: Used in base station transmitters, digital radio systems, and broadband communication equipment for generating high-quality analog signals for modulation and transmission.
- Instrumentation and Industrial Automation: Utilized in waveform generation, arbitrary waveform synthesis, and closed-loop control systems to achieve precise control of physical processes.
- Test and Measurement Equipment: Ideal for applications requiring high-resolution analog signals and fast settling times.
- Communication Systems: Supports advanced modulation schemes and digital predistortion techniques, enhancing spectral efficiency and signal fidelity.
Q & A
- What is the resolution of the AD9761ARS DAC?
The AD9761ARS has a resolution of 10 bits.
- How many DAC channels does the AD9761ARS have?
The AD9761ARS has two 10-bit DAC channels.
- What is the maximum output update rate of the AD9761ARS?
The maximum output update rate is 40 MSPS.
- What is the settling time of the AD9761ARS?
The settling time is typically 35 ns.
- What is the voltage supply range for the AD9761ARS?
The analog supply voltage ranges from 3 V to 5.5 V, and the digital supply voltage ranges from 2.7 V to 5.5 V.
- Does the AD9761ARS have an internal voltage reference?
Yes, it includes a 1.20 V temperature-compensated band gap voltage reference.
- What type of output does the AD9761ARS provide?
The output is current – unbuffered.
- What is the operating temperature range of the AD9761ARS?
The operating temperature range is -40°C to 85°C.
- What package type is the AD9761ARS available in?
The AD9761ARS is available in a 28-SSOP package.
- What are some common applications of the AD9761ARS?
Common applications include telecommunications, instrumentation, industrial automation, and test and measurement equipment.
