Linear的新LDO LT3042 噪声和PSRR指标都很好哇

我爱因仑风

0.8uVRMS的噪声，1MHz接近80db抑制，2MHz接近90db抑制

http://cds.linear.com/docs/en/datasheet/3042f.pdf


n Ultralow RMS Noise: 0.8?VRMS (10Hz to 100kHz)
n Ultralow Spot Noise: 2nV/√Hz at 10kHz
n Ultrahigh PSRR: 79dB at 1MHz
n Output Current: 200mA
n Wide Input Voltage Range: 1.8V to 20V
n Single Capacitor Improves Noise and PSRR
n 100?A SET Pin Current: ±1% Initial Accuracy
n Single Resistor Programs Output Voltage
n High Bandwidth: 1MHz
n Programmable Current Limit
n Low Dropout Voltage: 350mV
n Output Voltage Range: 0V to 15V
n Programmable Power Good
n Fast Start-Up Capability
n Precision Enable/UVLO
n Parallelable for Lower Noise and Higher Current
n Internal Current Limit with Foldback
n Minimum Output Capacitor: 4.7?F Ceramic
n Reverse Battery and Reverse Current Protection
n 10-Lead MSOP and 3mm × 3mm DFN Packages