Low Noise, High PSRR, Replica LDO

Overview

The WEALDORP1812NI8SFN12M22G is a low-dropout regulator LDO with voltage supplies 1.8 V and 1.2 V. The WEALDORP1812NI8SFN12M22G gives one output voltage 1.2 V driving the Power Amplifier. The output is programmable to retain the output voltage constant when the load current varies under a wide range.

Key Features

  • Voltage Supplies: 1.2 V, 1.8 V
  • Output voltage: 1.2 V
  • Max Output Current: 90 mA
  • Quiescent current: 7.1 mA
  • Maximum current: 51 mA
  • Reference Voltage: 1.2 V
  • PSRR: 70 dB @1 KHz, 1.8 V
  • 91 dB @1 KHz, 1.2 V
  • PSRR: 49 dB @1 MHz,1.8 V
  • 18 dB @1 MHz,1.2 V
  • Noise @1KHz: -145 dBV/sqrt (Hz) (54.8nV/sqrt (Hz))
  • Noise @1MHz: -173 dBV/sqrt (Hz) (2.2nV/sqrt (Hz))
  • Bandwidth: 6.8 KHz
  • Drop-out voltage: 14 mV (vdd12)
  • Load regulation:
  • 2.7 mV/mA Iload from 0-60mA
  • (1.8 mV/mA Iload close to 20mA)
  • Area: 211 um x 287 um
  • Process : 22FDX
  • Metal Option : 19

Block Diagram

Low Noise, High PSRR, Replica LDO Block Diagram

Technical Specifications

Short description
Low Noise, High PSRR, Replica LDO
Vendor
Vendor Name
Foundry, Node
GLOBALFOUNDRIES, 22FDX
Maturity
GDS Ready
GLOBALFOUNDRIES
Pre-Silicon: 22nm FDX
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Semiconductor IP