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ADUM1201ARZ

Dual digital isolator, 2500Vrms, 25Mbps, SOIC-8

25000

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Pieza del fabricante：

ADUM1201ARZ

Paquete：

SOIC-8 wide body (5.85 x 7.5 x 1.72 mm, >8mm creepage)

Marca：
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Descripción

Productos

The ADUM1201ARZ from Analog Devices is a dual-channel digital isolator with 2500V rms isolation, 25Mbps data rate, and 0.8mA per channel quiescent current in SOIC-8 package.

Especificaciones

Canales 2 (1 forward, 1 reverse)
Tensión de aislamiento 2500 V rms (1 minute per UL 1577)
Velocidad de datos 0 Mbps to 25 Mbps (DC correct)
Retardo de propagación 30 ns typical
Distorsión de la anchura de impulsos 2 ns max
Supply Voltage (Side 1) 2.7 V to 5.5 V
Supply Voltage (Side 2) 2.7 V to 5.5 V
Quiescent Current (per channel) 0.8 mA typical @ 5V
Output Type CMOS (default high for both channels)
Common-Mode Transient Immunity >25 kV/us
Paquete SOIC-8 (ARZ suffix, wide body)
Temperatura de funcionamiento -40 to +105 C

Características

  • iCoupler technology eliminates optocoupler limitations
  • 25Mbps data rate supports high-speed communication
  • 2500V rms isolation for safety and noise rejection
  • DC correctness: output defaults high if input power lost
  • 25kV/us common-mode transient immunity

Aplicaciones

  • SPI/I2C/UART isolation for industrial communication
  • Motor drive gate driver isolation
  • Medical equipment patient isolation
  • Power supply feedback isolation
  • Industrial automation and process control

The ADUM1201ARZ from Analog Devices is a dual-channel digital isolator using iCoupler technology in SOIC-8 wide-body package. The device provides 2500V rms isolation with 25Mbps maximum data rate and 30ns propagation delay. The two channels are arranged as one forward (side 1 to side 2) and one reverse (side 2 to side 1), ideal for full-duplex communication isolation. The iCoupler technology uses chip-scale transformers fabricated in a planar process, eliminating the LED and photodetector degradation issues of traditional optocouplers. The DC-correct design ensures the output defaults high if either side loses power, providing fail-safe operation. The ARZ suffix denotes SOIC-8 wide body with tape and reel.

The ADUM1201ARZ operates as a dual-channel digital isolator using iCoupler magnetic coupling technology. (1) The iCoupler technology uses on-chip planar transformers fabricated in a CMOS process. Data is encoded on the transmit side using a modulation scheme that creates alternating magnetic fields in the transformer primary. The secondary coil detects the magnetic field and decodes the data. The polyimide insulation layer between primary and secondary coils provides the galvanic isolation barrier rated at 2500V rms. (2) The encoding scheme is DC-correct: the transmitter sends a pulse for each input edge (rising and falling). At the receiver, a pulse on the transformer secondary sets or resets the output latch. If the input is static (no transitions), a periodic refresh signal maintains the correct output state. If power is lost on either side, the refresh signal stops and the output defaults to high (fail-safe). This DC correctness is critical for applications where the isolated signal may be static for extended periods. (3) The 25kV/us common-mode transient immunity is achieved by the differential transformer structure and careful layout of the isolation barrier. Fast common-mode transients (such as those generated by IGBT switching in motor drives) couple equally to both sides of the differential receiver and are rejected. This is significantly better than optocouplers, which can produce false outputs during fast transients due to LED parasitic capacitance.

Pin Nombre Función
1 VIA Channel A input (side 1, forward)
2 VIB Channel B input (side 1, reverse output)
3 VDD1 Side 1 supply (2.7-5.5V)
4 GND1 Side 1 ground
5 VOB Channel B output (side 2, reverse)
6 VOA Channel A output (side 2, forward)
7 VDD2 Side 2 supply (2.7-5.5V)
8 GND2 Side 2 ground
  • SPI/I2C/UART isolation for industrial communication interfaces
  • Motor drive gate driver isolation with 25kV/us CMTI
  • Medical equipment patient isolation per IEC 60601
  • Power supply feedback isolation with DC-correct fail-safe
  • Industrial automation and process control with 2500V rms rating
Modelo Fabricante Diferencia clave
ADUM1201BRZ ADI Same, higher temp (-40 to 125C)
ISO7721DR TI Same, 5000Vrms, SOIC-8
SIO862xBC Laboratorios Silicon Dual, 150Mbps, SOIC-8
ADUM3223ARZ ADI Dual half-bridge driver, 4A
ISO7221ADR TI Dual, 150Mbps, SOIC-8
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