
Applying fixed-series bandgap references
A Review of Some Outstanding Monolithic Voltage References and Their Applications
451
this unusual combination of impressive specs (i.e., low initial accuracy, low tempco,
low noise, and ultra-low quiescent current), there is no doubt that the LT1389 family
will find a lot of popularity with designers of battery-powered instruments, as well as
in consumer products such as cell phones, music pods, PDAs, digital cameras, and
laptops.
The circuit of Figure 15.7
shows an LT1389-2.5 reference providing a precise 2.5-volt
supply to a compound current source, using two matched MOS pairs from Advanced
Linear Devices. ...