[professional literacy] specific direction of analog integrated circuits

simulation IC Main design direction ：

Category one

• AD/DA： High precision , High speed
• PLL： low power consumption , all-digital ,Ultra-jitter
• Power management ：DC-DC
• memory：GDDRx,LPDDRx,HBMx
• Serdes：56G,112G,PCIe Gen5/6,USB 4.0…

Prospects for development ：AD/DA > Serdes > PLL ≈ memory > Power management

Category two

1, RF wireless field , PLL,PA,LNA And so on , Apply to Wi-Fi And other wireless fields

2, Power management ,DC- DC,LDO etc.

3, Clock class ,Oscillator,MEMS The clock ,PLL,DLL

4, Storage class ,DDR,SRAM,standcell

5 High speed interface class ,USB,PCIE etc.

Analog to digital conversion class ADC,DAC

Category three

PMU modular ,ABB modular ,TX,RX,PLL These are the main directions , Refine it ：

• PMU There are mainly DCDC LDO Wait for the power control module
• ABB There are mainly BPF、ADDA And other key modules
• TX There are mainly MIXER,PA And other key modules
• RX It's also MIXER,LNA,TIA And other key modules
• SX There are mainly VCO,PLL System ,CMU,LO And other key circuits

Then the main challenges at present are ADDA,PLL（ especially ADPLL）,PA Wait a few directions .

PMU：（Pressure Measuring Unit） Power management unit .
DCDC： Power module ; DC DC converter (Direct Current Direct Current Converter).
LDO： Low differential linear voltage regulator （Low Dropout Regulator）
ABB： The frequency converter converts fixed frequency alternating current into variable frequency 、 AC power supply with variable voltage .
BPF： Bandpass filter （Berkeley Packet Filter）
TX： The emitter (TX) And receiver (RX). Low noise amplifier (LNA) And mixer (Mixer) It is an indispensable key circuit in radio frequency receiver of wireless communication , Used in RF receiving circuit .
TIA： Transimpedance amplifier （Transimpedance amplifier, abbreviation TIA）.
PA：(Power Amplifier), power amplifier , Used in RF transmitting circuit .
PA, It can amplify the transmitted signal ,LNA, It can improve the receiving sensitivity , That is, the improvement of receiving ability , Wireless communication is a common means to increase distance .