Overview
The AD9742ARU, produced by Analog Devices Inc., is a 12-bit resolution, wideband, high-performance digital-to-analog converter (DAC) that is part of the TxDAC series. This DAC is optimized for the transmit signal path of communication systems and offers exceptional ac and dc performance. It supports update rates up to 210 MSPS, making it suitable for high-speed applications. The AD9742ARU is designed with low power dissipation, operating on a single supply of 2.7 V to 3.6 V and consuming 135 mW of power. It also features a power-down mode that reduces standby power to approximately 15 mW, making it ideal for portable and low-power applications.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Resolution | 12 bits | |||
| Update Rate | Up to 210 MSPS | |||
| Supply Voltage | 2.7 V | 3.3 V | 3.6 V | V |
| Power Consumption | 135 mW | mW | ||
| Power-Down Mode | Approximately 15 mW | mW | ||
| Package Type | 28-Lead TSSOP (4.4mm x 9.7mm) | |||
| Operating Temperature | -40°C | +85°C | °C | |
| Full-Scale Output Current | 20 mA | mA | ||
| Voltage Reference | 1.2 V temperature compensated band gap reference | V | ||
Key Features
- High-speed single-ended CMOS clock input supporting up to 210 MSPS conversion rate.
- Low power operation with a complete CMOS DAC function consuming 135 mW from a 2.7 V to 3.6 V single supply.
- Power-down mode reducing standby power dissipation to approximately 15 mW.
- On-chip 1.2 V temperature compensated band gap voltage reference.
- Segmented current source architecture combined with a proprietary switching technique to reduce spurious components and enhance dynamic performance.
- Edge-triggered input latches and support for 3 V CMOS logic families.
- Pin-compatible with other TxDAC family members, offering flexibility in component selection based on performance, resolution, and cost.
Applications
The AD9742ARU is specifically optimized for the transmit signal path of communication systems. It is well-suited for various high-speed applications, including:
- Wireless communication systems.
- Baseband and IF signal processing.
- Direct digital synthesis (DDS).
- Portable and low-power communication devices.
Q & A
- What is the resolution of the AD9742ARU?
The AD9742ARU has a 12-bit resolution.
- What is the maximum update rate of the AD9742ARU?
The AD9742ARU supports update rates up to 210 MSPS.
- What is the typical power consumption of the AD9742ARU?
The typical power consumption is 135 mW from a 2.7 V to 3.6 V single supply.
- What is the operating temperature range of the AD9742ARU?
The operating temperature range is -40°C to +85°C.
- What type of package is the AD9742ARU available in?
The AD9742ARU is available in a 28-Lead TSSOP (4.4mm x 9.7mm) package.
- Does the AD9742ARU have a power-down mode?
Yes, the AD9742ARU has a power-down mode that reduces standby power dissipation to approximately 15 mW.
- What type of voltage reference does the AD9742ARU include?
The AD9742ARU includes a 1.2 V temperature compensated band gap voltage reference.
- What is the full-scale output current of the AD9742ARU?
The full-scale output current is typically 20 mA.
- Is the AD9742ARU compatible with other TxDAC family members?
Yes, the AD9742ARU is pin-compatible with other TxDAC family members.
- What logic family does the AD9742ARU support?
The AD9742ARU supports 3 V CMOS logic families.
