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1. Is V(REFIO) the voltage felt by each DAC at full-scale current?  If I'm using 130 Ohm resistors on the P/N outputs should I have this set to 1.04V?
2. On page 23 requirement #2, is the I(OUTFS) the sum of all four DACs or for each DAC?  If I want 8mA on each DAC is it 8mA or 32mA?
1. 8mA, R(CAL_SENSE) = 4160
2. 32mA, R(CAL_SENSE) = 1040
3. Step #4 in the calibration, is the CAL_MODE_EN bit 6 or 7 in CALCONFIG register?  The note confuses me.
4. Step #8, are these corresponding calibration ranges correct for adjusting?  Do I increase the range value no matter if it is OF or UF?
1. COMP_OFFSET_OF/UF = COMP_CAL_RNG
2. RSET_CAL_OF/UF = ???
3. GAIN_CAL_OF/UF = DACxRANGE
5. Step #9, do I need to do anything with the COMP_OFFSET_CAL result in COMPOFFSET?
6. Step #10, #11 and #12, do I need to clear those bits twice?
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• Hi -

1. VREFIO is the reference voltage for all 4 DACs. IOUTFS = 32 x VREFIO/xRSET. REFIO can be from an internal band gap reference or an external reference up to 1.25V.

2. IOUTFS is for each DAC not for all 4 summed together. IOUTFS = 8ma is the maximum setting for AVDD = 3.3V

3. Bit 6

4. Yes. Go to the next larger range in either case

5. No

6. No. Once will do.

Thanks

• Hi -

1. VREFIO is the reference voltage for all 4 DACs. IOUTFS = 32 x VREFIO/xRSET. REFIO can be from an internal band gap reference or an external reference up to 1.25V.

2. IOUTFS is for each DAC not for all 4 summed together. IOUTFS = 8ma is the maximum setting for AVDD = 3.3V

3. Bit 6

4. Yes. Go to the next larger range in either case

5. No

6. No. Once will do.

Thanks

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