Who
Carsten Wulff
Why
Example of a PTAT, and a stable current bias source
How
PTAT is based on traditional bandgap structure
Stable current with temperature is based on Banba
What
What | Cell/Name |
---|---|
Schematic PTAT | design/JNW_BIAS_SKY130A/JNW_BIAS.sch |
Layout PTAT | design/JNW_BIAS_SKY130A/JNW_BIAS.mag |
Schematic Stable | design/JNW_BIAS_SKY130A/JNW_BIAS_IBS.sch |
Layout Stable | design/JNW_BIAS_SKY130A/JNW_BIAS_IBS.mag |
Key parameters
Parameter | Min | Typ | Max | Unit |
---|---|---|---|---|
Technology | Skywater 130 nm | |||
AVDD | 1.7 | 1.8 | 1.9 | V |
Temperature | -40 | 27 | 125 | C |
JNW_BIAS
Current proportional to temperature
Signal interface
Signal | Direction | Domain | Description |
---|---|---|---|
VDD_1V8 | Input | VDD_1V8 | Main supply |
STARTUP_1V8 | Input | VDD_1V8 | Injects current into PMOS current mirror when active |
IBP_1U[3:0] | Input | VDD_1V8 | PTAT bias currents (approx 1 uA) |
VSS | Input | Ground |
JNW_BIAS_IBS
Current stable with temperature
Signal interface
Signal | Direction | Domain | Description |
---|---|---|---|
VDD_1V8 | Input | VDD_1V8 | Main supply |
STARTUP_1V8 | Input | VDD_1V8 | Injects current into PMOS current mirror when active |
IBPS_1U[3:0] | Input | VDD_1V8 | Stable bias currents (approx 1 uA) |
VSS | Input | Ground |