ZHCSA21C FEBRUARY 2013 – December 2014 ADS1293
PRODUCTION DATA.

| PIN | TYPE | FUNCTION | ||
|---|---|---|---|---|
| NAME | NO. | |||
| IN1 - IN6 | 1 - 6 | Analog Input | Electrode input signals | |
| WCT | 7 | Analog Output | Wilson reference output or analog pace channel output | |
| CMOUT | 8 | Output | Common-mode detector output | |
| RLDOUT | 9 | Analog Output | Right-leg drive amplifier output | |
| RLDINV | 10 | Analog Input | Right-leg drive amplifier negative input | |
| RLDIN | 11 | Analog I/O | Right-leg drive amplifier positive input or analog pace channel output | |
| RLDREF | 12 | Analog Output | Internal right-leg drive reference | |
| SYNCB | 13 | Digital I/O | Sync bar; multiple-chip synchronization signal input or output | |
| VSSIO | 14 | Digital Supply | Digital input/output supply ground | |
| ALARMB | 15 | Digital Output | Alarm bar | |
| CSB | 16 | Digital Input | Chip-select bar | |
| SCLK | 17 | Digital Input | Serial clock | |
| SDI | 18 | Digital Input | Serial data input | |
| SDO | 19 | Digital Output | Serial data output | |
| DRDYB | 20 | Digital Output | Data ready bar | |
| CLK | 21 | Digital I/O | Internal clock output or external clock input | |
| VDDIO | 22 | Digital Supply | Digital input/output supply | |
| XTAL1 | 23 | Digital Input | External crystal for clock oscillator | |
| XTAL2 | 24 | Digital Input | External crystal for clock oscillator | |
| RSTB | 25 | Digital Input | Reset bar | |
| CVREF | 26 | Analog I/O | External cap for internal reference voltage | |
| VSS | 27 | Analog Supply | Power supply ground | |
| VDD | 28 | Analog Supply | Positive power supply | |
| DAP | — | — | No connect | |