Overview
The AD9745BCPZ, produced by Analog Devices Inc., is a high dynamic range, dual digital-to-analog converter (DAC) with a 12-bit resolution and a sample rate of up to 250 MSPS. This device is part of the AD9743/AD9745/AD9746/AD9747 family, which are pin-compatible and designed for various high-performance applications. The AD9745BCPZ features innovative switching output stages that allow for usable outputs beyond the Nyquist frequency, making it suitable for direct conversion transmit applications.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Resolution | 12 | - | - | Bits |
| Differential Nonlinearity (DNL) | ±0.13 | - | - | LSB |
| Integral Nonlinearity (INL) | ±0.25 | - | - | 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 |
| Supply Voltage | 1.8 V, 3.3 V | - | - | V |
| Power Dissipation | - | 315 | - | mW |
| Package Type | - | - | - | 72-Lead LFCSP |
Key Features
- Innovative switching output stage allowing for usable 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.
- Operates from 1.8 V and 3.3 V supplies.
- Small footprint, Pb-free, 72-pin LFCSP package.
- Serial peripheral interface (SPI) port for full programmability.
- Pin-programmable features for applications without a controller.
Applications
- Wireless infrastructure: WCDMA, CDMA2000, TD-SCDMA, WiMAX.
- Wideband communications: LMDS/MMDS, point-to-point.
- Instrumentation: RF signal generators, arbitrary waveform generators.
- Radio frequency (RF) signal generators.
Q & A
- What is the resolution of the AD9745BCPZ?
The AD9745BCPZ has a 12-bit resolution.
- What is the maximum sample rate of the AD9745BCPZ?
The maximum sample rate is up to 250 MSPS.
- What are the supply voltage options for the AD9745BCPZ?
The device operates from 1.8 V and 3.3 V supplies.
- What is the power dissipation of the AD9745BCPZ?
The power dissipation is approximately 315 mW.
- What type of package does the AD9745BCPZ come in?
The device comes in a 72-Lead LFCSP package.
- What are the key applications of the AD9745BCPZ?
The key applications include wireless infrastructure, wideband communications, instrumentation, and RF signal generators.
- Does the AD9745BCPZ have any auxiliary DACs?
Yes, it includes auxiliary 10-bit current DACs for external offset nulling.
- How is the output current of the AD9745BCPZ programmable?
The output current is programmable from 8.6 mA to 31.7 mA full scale.
- Does the AD9745BCPZ have an internal reference voltage source?
Yes, it includes an internal 1.2 V precision reference voltage source.
- What interface does the AD9745BCPZ use for programmability?
The device uses a serial peripheral interface (SPI) port for full programmability.
