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Zotino is a 32-channel, 16-bit DAC EEM with an update rate of 1MSPS (divided between the channels). It was designed for low noise and good stability. This project originated here: https://github.com/m-labs/sinara/wiki/Zotino.
Artiq docs/drivers link will be added once they are written!
- Current hardware revision: Rev 1.1
- Width: 4HP
- Channel count: 32
- Resolution: 16-bit
- Update rate: 1MSPS, which may be divided arbitrarily between the channels
- Analogue bandwidth: 3rd-order Butterworth response with 75kHz cut-off; ?V/s slew-rate
- Output voltage: ±10V
- Output impedance: 470Ohm in parallel with 2.2nF
- DAC: AD5372BCPZ
- EEM connectors: power and digital communication supplied by a single EEM connector.
- Power consumption: 3W without load, 8.7W with max load on all channels.
Measurements and simulations
Temperature stability: To do, but include self-heating. Worst-case OpAmp self-heating is about 25C. At 0.2ppm/C, this is 4ppm, which is fine!
**WIP -- will complete when measurements are made! **
- noise data...
- Add image of transfer function from schematics
- Add image of noise spectrum
- Add images of any measurements
- Zotino connects the 32 channels to both (a) a HD68 connector on its front panel and (b) to four IDC connectors on the board.
- HD68-to-HD68 cables are available from various sources.
- At the remote end, the HD68 connection can be broken out to four IDC connectors using HD68-IDC.
- Each IDC connection with 8 channels (either directly from Zotino or from the HD68-IDC board) can be broken out to BNC using BNC-IDC. That board can be placed in the same crate as Zotino or remotely together with HD68-IDC.