This IP is a precision bandgap with 1.2V output. It has been taped out. The specifications below are target specifications. Check back for characterized numbers once the silicon is characterized.
| Pin name | Use | Voltage Domain | Note |
|---|---|---|---|
| avdd18 | analog power | 1.8V | 1.8V |
| dvdd | digital power | 1.8V | 1.8V |
| avss | analog ground | ||
| dvss | digital ground | ||
| ena | enable bandgap | dvdd domain | dvdd domain |
| vena | enable scaled voltage outputs | dvdd domain | dvdd domain |
| vbg | bandgap output 1.2V | ||
| vbgsc | bandgap scaled output 1.024V | ||
| vbgtc | bandgap scaled output 1.048V | ||
| iptat | PTAT output current |
| Parameter | Min | Typical | Max | Unit | Notes |
|---|---|---|---|---|---|
| Operating Voltage | 1.62 | 1.8 | 1.98 | ||
| Operating Temperature | -40 | 25 | 85 | °C | |
| Output Voltage (vbg) | 1.18 | 1.2 | 1.22 | V | After trim |
| Output Voltage (vbgsc) | 1.024 | V | For precision DAC reference | ||
| Output Voltage (vbgtc) | 1.048 | V | For thermocouple reference | ||
| Power Consumption | 1 | 2 | 5 | µA | Measured at 3.3V and 25°C |
| Load Regulation | 0.01 | 0.05 | 0.1 | % | Load current 200nA to 1µA |
| Line Regulation | 0.01 | 0.05 | 0.1 | % | |
| Output Noise | 10 | 20 | 30 | nV/√Hz | At 0.1–10 Hz |
| Initial Accuracy | -0.5 | 0 | 0.5 | % | |
| PSRR (Power Supply Rejection) | 60 | 70 | 80 | dB | At 1kHz |
| Temperature Coefficient | 10 | 20 | 30 | ppm/°C | |
| Start-Up Time | 50 | 100 | 200 | µs | |
| PTAT output current | 50 | nA |
EF_BANDGAP_1P8V
Vendor
Efabless
130nm
Skywater
Bandgap
Free
Open Source
EF Certified
Defined