ZHCSHS1D May 2017 – December 2021 AWR1243
PRODUCTION DATA
Table 8-1 describes the four rails from an external power supply block of the AWR1243 device.
| SUPPLY | DEVICE BLOCKS POWERED FROM THE SUPPLY | RELEVANT IOS IN THE DEVICE |
|---|---|---|
| 1.8 V | Synthesizer and APLL VCOs, crystal oscillator, IF Amplifier stages, ADC, CSI2 | Input: VIN_18VCO, VIN18CLK, VIN_18BB, VIOIN_18DIFF, VIOIN_18IO LDO Output: VOUT_14SYNTH, VOUT_14APLL |
| 1.3 V (or 1 V in internal LDO bypass mode)(1) | Power Amplifier, Low Noise Amplifier, Mixers and LO Distribution | Input: VIN_13RF2, VIN_13RF1 LDO Output: VOUT_PA |
| 3.3 V (or 1.8 V for 1.8 V I/O mode) | Digital I/Os | Input VIOIN |
| 1.2 V | Core Digital and SRAMs | Input: VDDIN, VIN_SRAM |
The 1.3-V (1.0 V) and 1.8-V power supply ripple specifications mentioned in Table 8-2 are defined to meet a target spur level of –105 dBc (RF Pin = –15 dBm) at the RX. The spur and ripple levels have a dB-to-dB relationship, for example, a 1-dB increase in supply ripple leads to a ~1 dB increase in spur level. Values quoted are rms levels for a sinusoidal input applied at the specified frequency.
| FREQUENCY (kHz) | RF RAIL | VCO/IF RAIL | |
|---|---|---|---|
| 1.0 V (INTERNAL LDO BYPASS) (µVRMS) | 1.3 V (µVRMS) | 1.8 V (µVRMS) | |
| 137.5 | 7 | 648 | 83 |
| 275 | 5 | 76 | 21 |
| 550 | 3 | 22 | 11 |
| 1100 | 2 | 4 | 6 |
| 2200 | 11 | 82 | 13 |
| 4400 | 13 | 93 | 19 |
| 6600 | 22 | 117 | 29 |