At least 16 channels

PCIe-16AO64C
16-Bit, 64/32-Channel, 500KSPS PCIe Analog Outputs
- Precision 16-Bit analog outputs: DAC per Channel
- Software-configurable as
PMC66-16AO16
16-Channel 16-Bit Diff Analog Output PMC Board
- 16 Precision 3-Wire Balanced Differential High-Speed Analog Output