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ADUM1250SRZ-RL7

Name: ADUM1250SRZ-RL7
Rating: 4.7 (12 reviews)

DGTL ISOLTR 2.5KV 2CH I2C 8-SOIC

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規格

Series	iCoupler®
Part Status	Active
Base Product Number	ADUM1250
Technology	Magnetic Coupling
Type	I2C
Isolated Power	No
Number of Channels	2
Inputs - Side 1/Side 2	2/2
Channel Type	Bidirectional
Voltage - Isolation	2500Vrms
Common Mode Transient Immunity (Min)	25kV/µs
Data Rate	1Mbps
Pulse Width Distortion (Max)	145ns, 85ns
Voltage - Supply	3V ~ 5.5V
Operating Temperature	-40°C ~ 125°C
Mounting Type	Surface Mount
Package	8-SOIC (0.154", 3.90mm Width)
Supplier Device Package	8-SOIC
Packaging	Cut Tape (CT), Tape & Reel (TR)

概述

Description

ADuM1250SRZ-RL7 is an Analog Devices iCoupler digital isolator that provides galvanic isolation for SPI-like (isoSPI) signals. It is a four‑channel isolator with dual supplies (VDD1 and VDD2) so you can run the two sides of the link from independent grounds. The SRZ‑RMO packaging indicates a 16‑lead RoHS, lead‑free, tape‑and‑reel version (SRZ is the package code; RL7 denotes RoHS/T&R). Typical use is to couple a host MCU to an isolated peripheral (sensors, ADC/DAC, motor drivers, etc.) across an isolation barrier, maintaining signal integrity and protecting devices in noisy or safety‑critical environments. Signals cross the barrier as SPI‑like lines (e.g., MOSI/MISO/SCK/CS) without a common ground. Benefits include noise rejection, ground‑loop elimination, and safer high‑voltage separation while preserving fast data transfer.

Features

ADUM1250SRZ-RL7 features (concise):
- 4-channel digital isolator (iCoupler) with galvanic isolation between input and output sides
- Isolation rating: 5 kV RMS per channel
- Four isolated data channels suitable for standard digital logic levels (TTL/CMOS)
- High-speed, low-power operation; data rate on the order of tens of Mbps per channel with low propagation delay
- Independent supply rails on each side; supports 3.3 V and 5 V logic
- Industrial temperature range (-40°C to +125°C)
- 16-pin SRZ lead-free, RoHS-compliant package; RL7 denotes tape-and-reel option
- Applications: SPI/I2C/SMBus interfaces, isolated sensor/peripheral connections, microcontroller-to-peripheral isolation, etc.

Package

ADUM1250SRZ-RL7 is a 16‑lead SOIC (surface-mount, gull-wing) package on a 7‑inch tape‑and‑reel (RL7).

Pinout

- Pin count: 16 pins (SOIC-16, SRZ)
- Function: 4-channel digital isolator (iCoupler) with galvanic isolation between input side (VDD1/GND1) and output side (VDD2/GND2); four unidirectional data channels (A1–A4 to B1–B4). RL7 indicates Tape & Reel packaging.

Manufacturer

Manufacturer: Analog Devices, Inc. (ADI).
Company type: An American multinational semiconductor company that designs and manufactures analog, mixed-signal, and digital signal processing integrated circuits (e.g., data converters, amplifiers, sensors, MEMS, power management) for automotive, industrial, communications, consumer, and other markets.

Application

Applications for ADUM1250SRZ-RL7 include:
- Isolated SPI interface between MCU and isolated peripherals (ADC/DAC, sensors, memory, SPI devices)
- Industrial control and automation (PLC I/O, motor drives, power supplies)
- Automotive electronics (isolated sensors/ECU subsystems, high-voltage isolation)
- Data acquisition/instrumentation requiring galvanic isolation
- Systems requiring protection from high-voltage transients and ground-loop noise in harsh environments

Equivalent

Equivalent parts (4‑channel SPI digital isolators) include:
- Analog Devices: ADuM1250, ADuM1251, ADuM1252 (same family, different directions)
- TI: ISO1540/ISO1541/ISO7840/ISO7841 isoSPI isolators
- Silicon Labs: Si86xx isoSPI digital isolators
- Broadcom/Avago: HCPL-7800/7840 family (4‑channel digital isolators)
Note: exact pinout and channel directions vary—verify package, voltage rails, and directionality for a drop‑in replacement.