AP225: 12-bit DAC Module
• 16 channels voltage outputs
• Wide temperature range
• PCIe bus interface
The AP225 outputs analog voltage signals to drive up to 16 devices. When used with a carrier that holds two AcroPack AP modules, up to 32 voltage outputs can be obtained from a single card cage slot. The AP225 is ideal for waveform generation application that require high speed capabilities.more >
Each output channel has its own 12-bit D/A converter (DAC). Individual DACs are faster, and they eliminate glitches typically caused by the re-acquisition process of sample and holds found on multiplexed output boards.
A 64K sample memory is provided for waveform storage on board. This memory is shared between the sixteen channels. Waveforms can be continuously output from onboard memory without host intervention. Additionally, a DMA controller is provided for streaming waveform data from host memory.
The AP225 supports 6 independent software selectable output ranges plus capabilities to monitor the status of each output.
Designed for COTS applications these analog output modules deliver high-density, high-reliability, and high-performance at a low cost.
AcroPack modules are RoHS compliant and ideal for military, defense, automation, aerospace, scientific, and development labs industries.
The AcroPack® product line updates our popular Industry Pack I/O modules with a PCIe interface format. This COTS tech-refresh offers a compact size, low-cost I/O, the same functionality and memory map of the existing Industry Pack modules in a rugged form factor. Combine different AcroPack modules on one carrier for a simplified modular approach to system assembly.
The AP225 modules are 70mm long, 19.05mm longer than the full-length mini-PCIe card. The board’s width is the same as mPCIe board and uses the same mPCIe standard board hold down standoffs and screw keep out areas.
A down facing 100 pin Samtec connector will mate with the carrier card. Fifty of these signals are available as field I/O signals.
Output configuration: 16 non-isolated bipolar/unipolar.
D/A Resolution: 12 bits.
Output ranges: Unipolar: 0V to 5V, 0V to 10V. BiPolar: -2.5V to 7.5V, ±-3V, ±5V, ±10V.
Output rate: 100kS/s
Settling time: 9uS - 20V step to 1 LSB at 16-bit resolution. 7.5uS - 10V step to 1 LSB at 16-bit resolution.
Maximum throughput rate: Outputs can be updated simultaneously or individually. One channel: 7.5μS/conversion. Sixteen channels simultaneously: 17μS/16 channels.
Calibrated system accuracy: Linearity error: ±0.5 LSB. Offset error: ±0.0625 LSB. Gain error: ±0.0625 LSB. Total error: ±0.625 LSB (±0.0152% FSR) maximum.
Data format (left–justified): Straight Binary or Two’s Complement.
Output at reset: 0 volts.
Output current: 10mA (maximum). This corresponds to a minimum load resistance of 1K ohms with a 10V output.
Short circuit protection: Indefinite at 25°C.
PCI Express Base Specification
Conforms to PCIe base specification Revision 2.1.
Lanes: 1 lane in each direction.
Bus Speed: 2.5 Gbps (Generation 1).
Memory: 1MB space required. 1 base address register.
Operating temperature: -40 to 70°C. -40 to 75°C. (requires an AcroPack heatsink conduction-cool kit)
Storage temperature: -55 to 150°C.
Relative humidity: 5 to 95% non-condensing.
MTBF: Please contact the factory.
Power: +3.3 VDC ±5% 0.5A typical, 1A maximum. +12 VDC ±5% 85mA typical, 275mA maximum. -12 VDC ±5% 50mA typical, 200mA maximum.
Length 70mm. Width 30mm.
Note: AcroPack modules are compatible only with the carriers listed in the accessory section of this page.
Features & Benefits
- PCI Express Generation 1 interface
- Independent 12-bit D/A converters per channel
- Waveforms can be continuously output from onboard memory without host intervention
- DMA controller provides for streaming waveform data from host memory
- Mix countless I/O combinations in a single slot
- Per channel configurability of bipolar and unipolar output ranges
- Sample software and diagnostics
- Configurable FIFO sizes up to 64K samples offer flexible waveform lengths
- Built-in calibration coefficients
- Flexible trigger, operating modes, and memory allocation
- Independent selectable output ranges
- Outputs reset to 0 volts
- Internally stored calibration coefficients
- ensure accuracy.
- Synchronization of multiple modules using an external trigger
- Solid-down connector I/O interface