DAPU Products:

1. High stability clock series: Crystal（32.768KHz）, Crystal（MHz）,SPXO, TCXO, OCXO, Clock Module;

2. Timing Server: Timing Server;

3. Chip Series: Real Time Clock (RTC) , Clock Buffer, Phase locked loop (PLL) , IEEE1588v2, All-Silicon Oscillator, Ethernet PHY; 4. RF Passive Devices: SMD Circulator / Isolator, Drop-In Circulator / Isolator, SMT Circulator / Isolator.

DAPU Chip Series

1. Real Time Clock (RTC)

Real time clock (RTC) is an integrated circuit chip that provides precise time for electronic products or electronic systems.

Key Features

• The      RTC comes with a built-in 32.768KHz crystal, with the highest precision      reaching up to ±2ppm. It features I²C interface communication,      and supports various functions such as calendar (year, month, week, day,      hour, minute, second, 1/16 second), automatic leap year adjustment, backup      battery, power automatic switching, wake-up interrupt, timer, frequency      output, and more.

Applications

• Security      monitoring: IPC, DVR, NVR, smart door lock, access control system etc.

• Consumer      electronics: notebook, pad, PC etc.

• Communication      network: base station, switch etc.

• Automotive      electronics: T-box, IPC, taxi meter, DVR, automobile instrument etc.

• Meter:      electricity meter, water meter, gas meter etc.

• Smart      home: HEMS home energy management system, smart temperature controller,      sweeping robot, water heater, smart socket etc.

• Automatic      industrial control: mechanical arm, PLC motor servo, HMI, servo controller      etc.

• Medical      / office equipment / test and measurement: oximeter, medical monitor,      endoscope, attendance machine, MFP etc.

1.1  RTC for Automotive

1.2  RTC (Ultra-high Accuracy)

1.3  RTC (High Accuracy)

1.4  Separated RTC

1.5  Anti-shock RTC with wide temperature

2.  Clock Buffer

Buffer is a device that buffers, fans out, distributes or multiplexes the input clock signal.

Key Features

• The      INS6XXX series buffer features low additive jitter, low power consumption,      and supports multiple clock fanouts, multiple input clock level signals,      and configurable output I/O voltage.

Applications

• Communication      equipment: switch, router, MSAN, DSLAM, PON, SONET, SDH equipment etc.

• Industrial      control equipment: high speed data acquisition card, servo motor etc.

• Instruments:      signal generator etc.

2.1  Clock Buffer: Single-ended buffer

2.1  Clock Buffer: Differential buffer

3.  Phase locked loop (PLL)

PLL is a feedback control circuit that uses the external input reference signal to control the oscillating signal within the loop and output accurate frequency and phase.

Key Features

• The      INS83XX series of PLL chips feature extremely low phase noise and jitter,      programmable bandwidth, dual PLL, support for input and output of any      frequency, and clock accuracy better than 0.05ppm in hold mode. 

Applications

• Base      station, microwave communication etc.

• Data      converter clock

• Transmission      network

• Medical,      video etc.

• Instruments

3.1 PLL with low jitter

3.2  RF PLL with Low noise

4.  IEEE1588v2

IEEE1588v2 is a protocol standard that provides precise clock synchronization through network measurement and control system, and adopts PTP (Precision Time Protocol). Its accuracy can reach nanosecond level.

Key Features

• Single      chip solution, open SPI interface, firmware upgrade and strong system      compatibility;

• Supports      G.8261/G.8262/G.8265.1/G.8275.1/G.8273.2.

Applications

• Wired      communication, wireless communication, power grid, rail transit network,      instrumentation, etc.

5.  All-Silicon Oscillator

All silicon oscillator uses a pure silicon LC oscillator to generate single-ended or differential frequency signals through frequency synthesis and compensation technology without quartz or MEMS devices, providing a circuit reference clock source.

Key Features

• Chip      manufacturing process, anti-vibration ability, flexible configuration of      output frequency, and support a variety of output formats.

Applications

• Communication:      server, computer, storage, switch, router, high-speed optical module,      network interface card, etc.

• Industry:      video broadcasting, audiovisual processing, testing equipment, etc.

5.1  All-Silicon Oscillator: Differential / single-ended products

Notes:

• DSO3001      can be configured freely before delivering.

• DSO3002      can switch between multiple configurations through pins after delivering.

• DSO3003      can be freely configured through I²C after delivering.

5.2  All-Silicon Oscillator: Single-ended products

Notes:

• DSO311      can be configured freely before delivering

• DSO312 can      switch between multiple configurations through pins after delivering.

6.  Ethernet PHY

Ethernet PHY chip is the transceiver of Ethernet physical layer, used to modulate and demodulate optoelectronic signals, and synchronize clock information, serving as the data transmission channel for the MAC layer. 

Key Features

• Comply      with 1000BASE-T/100BASE-TX/10BASE-Te IEEE 802.3 and support MAC interface      with RGMII and RMI&MII.

Applications

• Smart      appliances: smart TV, IPTV set-top box etc.

• Communication      equipment: business board, control board, BBU, AAU, router, optical modem,      IPTV set-top box etc.

• Security      monitoring: IPC, DVR, NVR, face recognition, access control system etc.

• Industrial      control equipment: robots, test instrument, LED outdoor display etc.