SLASEX3A March 2021 – December 2021 DAC43204 , DAC53204 , DAC63204
PRODUCTION DATA
Refer to the PDF data sheet for device specific package drawings
The sine wave function uses 24 preprogrammed points per cycle. The frequency of the sine wave depends on the SLEW-RATE settings as shown in Equation 8:
where SLEW_RATE is the SLEW-RATE-X setting as specified in Table 7-6.
An external RC load with a time constant larger than the slew-rate settings can be dominant over the internal frequency calculation. The SLEW-RATE-X setting is available in the DAC-X-FUNC-CONFIG register. Writing 0b100 to the FUNC-CONFIG-X bit field in the DAC-X-FUNC-CONFIG register selects sine wave. The codes for the sine wave are fixed. Use the gain settings at the output amplifier for changing the full-scale output using the internal reference option. The gain settings are accessible through the VOUT-GAIN-X bits in the DAC-X-VOUT-CMP-CONFIG register. Table 7-10 shows the list of hard-coded discrete points for the sine wave with 12-bit resolution and Figure 7-12 shows the pictorial representation of the sine wave. There are four phase settings available for the sine wave that are selected using the PHASE-SEL-X bit in the DAC-X-FUNC-CONFIG register.
SEQUENCE | 12-BIT VALUE | SEQUENCE | 12-BIT VALUE | |
---|---|---|---|---|
0 | 0x800 | 12 | 0x800 | |
1 | 0x9A8 | 13 | 0x658 | |
2 | 0xB33 | 14 | 0x4CD | |
3 | 0xC87 | 15 | 0x379 | |
4 | 0xD8B | 16 | 0x275 | |
5 | 0xE2F | 17 | 0x1D1 | |
6 | 0xE66 | 18 | 0x19A | |
7 | 0xE2F | 19 | 0x1D1 | |
8 | 0xD8B | 20 | 0x275 | |
9 | 0xC87 | 21 | 0x379 | |
10 | 0xB33 | 22 | 0x4CD | |
11 | 0x9A8 | 23 | 0x658 |