The ADS4229 is pin-compatible with the previous generation ADS62P49 data converter; this similar architecture enables easy migration. However, there are some important differences between the two device generations, summarized in Table 1.
Table 1. Migrating from the ADS62P49
| ADS62P49 FAMILY |
ADS4229 |
| PINS |
| Pin 22 is NC (not connected) |
Pin 22 is AVDD |
| Pins 38 and 58 are DRVDD |
Pins 38 and 58 are NC (do not connect, must be floated) |
| Pins 39 and 59 are DRGND |
Pins 39 and 59 are NC (do not connect, must be floated) |
| SUPPLY |
| AVDD is 3.3 V |
AVDD is 1.9 V |
| DRVDD is 1.8 V |
No change |
| INPUT COMMON-MODE VOLTAGE |
| VCM is 1.5 V |
VCM is 0.95 V |
| SERIAL INTERFACE |
| Protocol: 8-bit register address and 8-bit register data |
No change in protocol
New serial register map |
| EXTERNAL REFERENCE |
| Supported |
Not supported |