Overview
The AD9747BCPZ, produced by Analog Devices Inc., is a high-performance, dual digital-to-analog converter (DAC) designed for applications requiring high dynamic range and precision. This component is part of the AD9743/AD9745/AD9746/AD9747 family, which offers pin-compatible devices with various resolutions. The AD9747 specifically features 16-bit resolution and a sample rate of up to 250 MSPS, making it ideal for direct conversion transmit applications and interfacing with analog quadrature modulators.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Resolution | 16 | Bits | ||
| Sample Rate | 250 | MSPS | ||
| Differential Nonlinearity (DNL) | ±0.5 | ±2.0 | LSB | |
| Integral Nonlinearity (INL) | ±1.0 | ±4.0 | LSB | |
| Offset Error | ±0.001 | %FSR | ||
| Gain Error | ±2.0 | %FSR | ||
| Full-Scale Output Current | 8.6 | 31.7 | mA | |
| Output Compliance Voltage | -1.0 | +1.0 | V | |
| Output Resistance | 10 | MΩ | ||
| Auxiliary DAC Resolution | 10 | Bits | ||
| Supply Voltage | 1.8 | 3.3 | V | |
| Power Dissipation | 315 | mW | ||
| Package Type | 72-Lead LFCSP (10mm x 10mm w/ EP) |
Key Features
- High dynamic range, dual digital-to-analog converters with 16-bit resolution and up to 250 MSPS sample rate.
- Proprietary dynamic output architecture allowing synthesis of analog outputs beyond the Nyquist frequency.
- LVCMOS inputs with dual-port or optional interleaved single-port operation.
- Differential analog current outputs programmable from 8.6 mA to 31.7 mA full-scale.
- Auxiliary 10-bit current DACs with source/sink capability for external offset nulling.
- Internal 1.2 V precision reference voltage source.
- Operation from 1.8 V and 3.3 V supplies with 315 mW power dissipation.
- Small footprint, RoHS-compliant, 72-lead LFCSP package.
- Serial Peripheral Interface (SPI) port for full programmability.
Applications
- Wireless infrastructure: WCDMA, CDMA2000, TD-SCDMA, WiMAX.
- Wideband communications: LMDS/MMDS, point-to-point.
- Instrumentation: RF signal generators, arbitrary waveform generators.
Q & A
- What is the resolution of the AD9747BCPZ?
The AD9747BCPZ has a resolution of 16 bits.
- What is the maximum sample rate of the AD9747BCPZ?
The maximum sample rate is up to 250 MSPS.
- What type of input does the AD9747BCPZ use?
The AD9747BCPZ uses LVCMOS inputs with dual-port or optional interleaved single-port operation.
- What is the range of the full-scale output current?
The full-scale output current is programmable from 8.6 mA to 31.7 mA.
- Does the AD9747BCPZ have an internal reference voltage source?
Yes, it includes an internal 1.2 V precision reference voltage source.
- What are the supply voltages for the AD9747BCPZ?
The device operates from 1.8 V and 3.3 V supplies.
- What is the power dissipation of the AD9747BCPZ?
The power dissipation is 315 mW.
- What package type does the AD9747BCPZ come in?
The AD9747BCPZ is available in a 72-Lead LFCSP (10mm x 10mm w/ EP) package.
- Is the AD9747BCPZ RoHS-compliant?
Yes, the AD9747BCPZ is RoHS-compliant.
- What interface does the AD9747BCPZ use for programmability?
The device uses a Serial Peripheral Interface (SPI) port for full programmability.
