AMS1009 is a precision band-gap voltage reference diode. This voltage reference features a very low dynamic impedance and good temperature coefficient, operating over a wide current range. A third terminal allows the reference voltage to be adjusted to 5% to calibrate out system errors. The AMS1009 is used as a reference for 5V systems, power supplies instrumentation and in current loop measurement and control systems.
| TOL. | TO-92 | 8 LEAD SOIC | Operating Temperature |
| ±5mV | AMS1009AN | AMS1009AS | 0 to 70° C |
| ±10mV | AMS1009BN | AMS1009BS | 0 to 70° C |