ADUM1250: Hot Swappable Dual I2C Isolator
The ADuM1250/ADuM1251* are hot swappable digital isolators with nonlatching, bidirectional communication channels compatible with I2C® interfaces. This eliminates the need for splitting ...More
ADUM1250: Hot Swappable Dual I2C Isolator
Product Description
The ADuM1250/ADuM1251* are hot swappable digital isolators with nonlatching, bidirectional communication channels compatible with I2C® interfaces. This eliminates the need for splitting I2C signals into separate transmit and receive signals for use with standalone optocouplers.
The ADuM1250 provides two bidirectional channels, supporting a complete isolated I2C interface. The ADuM1251 provides one bidirectional channel and one unidirectional channel for those applications where a bidirectional clock is not required.
Both the ADuM1250 and ADuM1251 contain hot swap circuitry to prevent glitching data when an unpowered card is inserted onto an active bus.
These isolators are based on iCoupler ® chip scale transformer technology from Analog Devices, Inc. iCoupler is a magnetic isolation technology with functional, performance, size, and power consumption advantages as compared to optocouplers. With the ADuM1250/ADuM1251, iCoupler channels can be integrated with semiconductor circuitry, which enables a complete isolated I2C interface to be implemented in a small form factor.
Applications
*Protected by U.S. Patents 5,952,849; 6,873,065; and 7,075,329. Other patents pending.
Data Sheet, Rev. A, 6/07
- Data Sheet Rev A, 06/2007 (pdf 301kB)
- (About Data Sheets)
Features
- Bidirectional I2C communication
- Open-drain interfaces
- Suitable for hot swap applications
- 30 mA current sink capability
- 1000 kHz operation
- 3.0 V to 5.5 V supply/logic levels
- 8-lead SOIC RoHS-compliant package
- High temperature operation: 105°C
- Safety and regulatory approvals
UL recognition
2500 V rms for 1 minute per UL 1577
CSA Component Acceptance Notice #5A
VDE certificate of conformity
DIN V VDE V 0884-10
(VDE V 0884-10):2006-12
VIORM = 560 V peak
Diagrams
- Enlarge
- Other Diagrams
- Symbols and Footprints
Functional Block Diagram for ADUM1250
Hot Swappable Dual I2C Isolator
Functional Block Diagram for ADuM1250
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ADUM6402 - Quad-Channel Isolators with Integrated DC-to-DC Converter
ADUM6403 - Quad-Channel Isolators with Integrated DC-to-DC Converter
| Part# | Features | # Ch | Max Data Rate(Mbps) | Resolution (Bits) | Insulation Rating (kVrms) | Isolation Voltage (Vrms) | Max Operating Temp (°C) | Pulse Width Distort (ns) | Max Prop Delay (ns) | Pos Supply | Isolated Output (V)min | Isolated Output (V)max | Output Default State | Serial Clock | Package | Power (mW) | iCouplerType | Price* (1000-4999) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| AD260 | 40 MBd 5ch dig isol+iso pwr, uC i'face & data tx | - | - | - | - | 1250 | - | - | - | - to - | - | - | - | - | - | - | - | $29.67 |
| AD261 | 40 MBd 5ch Fieldbus dig isol, uController/periph i'face | - | - | - | - | 1250 | - | - | - | - to - | - | - | - | - | - | - | - | $25.85 |
| AD7400 | Isolated Sigma-Delta Modulator | - | 10 | 16 | 3.75 | - | - | - | - | +4.5V to +5.5V | - | - | - | - | 16-Lead SOIC | 90 | ADC | $4.05 |
| AD7400A | - | - | 10 | 16 | 3.75 | - | - | - | - | +4.5V to +5.5V | - | - | - | - | 8-Lead SOIC | 85 | ADC | $4.00 |
| AD7401 | Isolated Sigma-Delta Modulator | - | 18 | 16 | 3.75 | - | - | - | - | +4.5V to +5.5V | - | - | - | - | 16-Lead SOIC | 90 | ADC | $4.05 |
| AD7401A | - | - | 20 | 16 | 3.75 | - | - | - | - | +4.5V to +5.5V | - | - | - | - | 16-Lead SOIC | 85 | ADC | $4.00 |
| ADM2482E | Sig. Isolated RS-485 Xcvr, Full/Half Dup w/ Xfrmr Drvr | n/a | 16 | n/a | 2.5 | 2500 | 85 | n/a | 100 | +3V to +5.5V | 3 | 3.6 | - | - | 16-Lead SOIC | 195 | RS-485 | $4.66 |
| ADM2483 | RS-485 Transceiver/Half Duplex | 1 | 0.5 | - | 2.5 | - | 85 | - | - | +2.7V to +5.5V | 1.5 | 5 | Z | - | 16-Lead SOIC | - | RS-485 | $3.04 |
| ADM2484E | Signal Isolated RS-485 Xcvr, Full/Half Dup | - | 0.5 | - | 5 | - | 85 | - | - | +3V to +5.5V | - | - | - | - | 16-Lead SOIC | - | RS-485 | $3.04 |
| ADM2485 | RS-485 Transeiver | 1 | 16 | - | 2.5 | - | 85 | - | - | +2.7V to +5.5V | 2.1 | 5 | Z | - | 16-Lead SOIC | - | RS-485 | $5.57 |
| ADM2486 | RS-485 Transceiver/Half Duplex w/ Transformer Driver | 1 | 20 | - | 2.5 | - | 85 | - | - | +2.7V to +5.5V | - | - | Z | - | 16-Lead SOIC | - | RS-485 | $5.04 |
| ADM2487E | Isolated RS-485 Xcvr Full/Half Dup w/ Xfrmr Driver | n/a | 0.5 | n/a | 2.5 | 2.5 | 85 | n/a | 700 | +3V to +5.5V | 3 | 3.6 | - | - | 16-Lead SOIC | 152 | RS-485 | $3.64 |
| ADM2490E | RS-485 Transceiver/Full Duplex | 1 | 16 | - | 5 | - | 105 | - | - | +2.7V to +5.5V | - | - | High | - | 16-Lead SOIC | - | RS-485 | $4.55 |
| ADM2491E | Isolated RS-485 Xcvr, Full/Half Duplex | - | 16 | n/a | 5 | - | 85 | - | - | +3V to +5.5V | - | - | - | - | 16-Lead SOIC | - | RS-485 | $4.76 |
| ADM2582E | 16 MBps Signal&Pwr Isolated RS-485 Xcvr | - | 16 | n/a | 2.5 | 2.5 | 85 | - | 100 | +3V to +5.5V | - | - | - | - | 20-Lead SOIC | - | - | - |
| ADM2587E | 500 kBps Signal&Pwr Isolated RS-485 Xcvr | - | 500 | n/a | 2.5 | 2.5 | 85 | - | 200 | +3V to +5.5V | - | - | - | - | 20-Lead SOIC | - | - | - |
| ADM3251E | - | - | 0.46 | - | 2.5 | - | 85 | - | - | +4.5V to +5.5V | - | - | - | - | 20-Lead SOIC | - | RS-232 | $2.99 |
| ADUM1100 | Standard Digital Isolator | 1 | 100 | - | 2.5 | 2.5 | 125 | 2 | 18 | +3V to +5.5V | 3 | 5.5 | High | - | 8-Lead SOIC | - | Standard | $1.63 |
| ADUM1200 | Standard Digital Isolator | 2 | 25 | - | 2.5 | 2500 | 125 | 3 | 45 | +2.7V to +5.5V | 2.7 | 5.5 | High | - | 8-Lead SOIC | - | Standard | $1.22 |
| ADUM1201 | Standard Digital Isolator | 2 | 25 | - | 2.5 | 2500 | 125 | 3 | 45 | +2.7V to +5.5V | 2.7 | 5.5 | High | - | 8-Lead SOIC | - | Standard | $1.22 |
| ADUM1210 | Standard Digital Isolator AEC-Q100 Qualified | 2 | 10 | - | 2.5 | - | 105 | 3 | 50 | +2.7V to +5.5V | 2.7 | 5.5 | Low | - | 8-Lead SOIC | - | Standard | $1.78 |
| ADUM1230 | Isolated Gate Drivers | 2 | 10 | - | 2.5 | - | 105 | 8 | 160 | - to - | 12 | 18 | Low | - | 16-Lead SOIC | - | - | - |
| ADUM1233 | Isolated Gate Driver | 2 | 10 | - | 2.5 | - | 105 | - | 160 | - to - | 12 | 18 | Low | - | 16-Lead SOIC | - | GateDriver | $1.59 |
| ADUM1234 | Isolated Gate Driver | 2 | - | - | 2.5 | - | 105 | - | 160 | - to - | 12 | 18 | Low | - | 16-Lead SOIC | - | GateDriver, iCoupler | $1.59 |
| ADUM1250 | I2C Compliant Bidirectional Digital Isolator | 1 | 1 | - | 2.5 | - | 105 | 67 | 150 | +3V to +5.5V | - | - | High | Bidirectional | 8-Lead SOIC | - | I2C, iCoupler | $2.42 |
| ADUM1251 | I2C Compliant Bidirectional Digital Isolator | 1 | 1 | - | 2.5 | - | 105 | 67 | 150 | +3V to +5.5V | - | - | High | Unidirectional | 8-Lead SOIC | - | I2C, iCoupler | $2.19 |
| ADUM1300 | Standard Digital Isolator AEC-Q100 Qualified | 3 | 90 | - | 2.5 | 2500 | 125 | 2 | 32 | +2.7V to +5.5V | 2.7 | 5.5 | High | - | 16-Lead SOIC | - | iCoupler, Standard | $1.63 |
| ADUM1301 | Standard Digital Isolator AEC-Q100 Qualified | 3 | 90 | - | 2.5 | 2500 | 125 | 2 | 32 | +2.7V to +5.5V | 2.7 | 5.5 | High | - | 16-Lead SOIC | - | iCoupler, Standard | $1.63 |
| ADUM1310 | Standard Digital Isolator AEC-Q100 Qualified | 3 | 10 | - | 2.5 | - | 105 | 5 | 50 | +2.7V to +5.5V | 2.7 | 5.5 | High | - | 16-Lead SOIC | - | Standard | $1.44 |
| ADUM1311 | Standard Digital Isolator AEC-Q100 Qualified | 3 | 10 | - | 2.5 | - | 105 | - | 50 | +2.7V to +5.5V | 2.7 | 5.5 | High | - | 16-Lead SOIC | - | iCoupler, Standard | $1.44 |
| ADUM1400 | Standard Digital Isolator AEC-Q100 Qualified | 4 | 90 | - | 2.5 | 2500 | 125 | 2 | 32 | +2.7V to +5.5V | 2.7 | 5.5 | High | - | 16-Lead SOIC | - | iCoupler, Standard | $2.17 |
| ADUM1401 | Standard Digital Isolator | 4 | 90 | - | 2.5 | 2500 | 125 | 2 | 32 | +2.7V to +5.5V | 2.7 | 5.5 | High | - | 16-Lead SOIC | - | iCoupler, Standard | $2.17 |
| ADUM1402 | Standard Digital Isolator AEC-Q100 Qualified | 4 | 90 | - | 2.5 | 2500 | 125 | 2 | 32 | +2.7V to +5.5V | 2.7 | 5.5 | High | - | 16-Lead SOIC | - | iCoupler, Standard | $2.17 |
| ADUM1410 | Standard Digital Isolator | 4 | 10 | - | 2.5 | - | 105 | 5 | 50 | +2.7V to +5.5V | 2.7 | 5.5 | High | - | 16-Lead SOIC | - | iCoupler, Standard | $1.85 |
| ADUM1411 | Standard Digital Isolator | 4 | 10 | - | 2.5 | - | 105 | 5 | 50 | +2.7V to +5.5V | 2.7 | 5.5 | High | - | 16-Lead SOIC | - | iCoupler, Standard | $1.85 |
| ADUM1412 | Standard Digital Isolator | 4 | 10 | - | 2.5 | - | 105 | 5 | 50 | +2.7V to +5.5V | 2.7 | 5.5 | High | - | 16-Lead SOIC | - | iCoupler, Standard | $1.85 |
| ADUM1420 | Isolated Gate Driver | 4 | 10 | - | 1.6 | - | 105 | - | 160 | - to - | 12 | 18 | Low | - | 28-Lead SOIC | - | GateDriver, iCoupler | $2.32 |
| ADUM1510 | Unidirectional Digital Isolator | 5 | 10 | - | 2.5 | - | 105 | - | 50 | +4.5V to +5.5V | - | - | - | - | 16-Lead SOIC | - | Standard | $4.54 |
| ADUM2200 | Standard Digital Isolator | 2 | 10 | - | 5 | - | 105 | - | 50 | +3V to +5.5V | 2.7 | 5.5 | High | - | 16-Lead SOIC | - | Standard | $1.67 |
| ADUM2201 | Standard Digital Isolator | 2 | 10 | - | 5 | - | 105 | - | 50 | +3V to +5.5V | 2.7 | 5.5 | High | - | 16-Lead SOIC | - | Standard | $1.66 |
| ADUM2250 | I2C Compliant Bidirectional Digital Isolator | 2 | 1 | - | 5 | - | 105 | - | - | +3V to +5.5V | - | - | High | Bidirectional | 16-Lead SOIC | - | I2C | $3.00 |
| ADUM2251 | I2C Compliant Bidirectional Digital Isolator | 2 | 1 | - | 5 | - | 105 | - | - | +3V to +5.5V | - | - | High | Unidirectional | 16-Lead SOIC | - | I2C | $2.77 |
| ADUM2400 | Standard Digital Isolator | 4 | 90 | - | 5 | - | 105 | 3 | 32 | +2.7V to +5.5V | 2.7 | 5.5 | High | - | 16-Lead SOIC | - | iCoupler, Standard | $3.20 |
| ADUM2401 | Standard Digital Isolator | 4 | 90 | - | 5 | - | 105 | 3 | 32 | +2.7V to +5.5V | 2.7 | 5.5 | High | - | 16-Lead SOIC | - | iCoupler, Standard | $3.20 |
| ADUM2402 | Standard Digital Isolator | 4 | 90 | - | 5 | - | 105 | 3 | 32 | +2.7V to +5.5V | 2.7 | 5.5 | High | - | 16-Lead SOIC | - | iCoupler, Standard | $3.20 |
| ADUM3100 | Ruggedized for System Level ESD | 1 | 50 | - | 2.5 | - | 105 | 2 | 28 | +3V to +5.5V | 3 | 5.5 | High | - | 8-Lead SOIC | - | Standard | $1.71 |
| ADUM3200 | Ruggedized for System-Level ESD | 2 | 25 | - | 2.5 | - | 105 | 3 | 45 | +2.7V to +5.5V | 2.7 | 5.5 | High | - | 8-Lead SOIC | - | iCoupler, Standard | $0.93 |
| ADUM3201 | Ruggedized for System-Level ESD | 2 | 25 | - | 2.5 | - | 105 | 3 | 45 | +2.7V to +5.5V | 2.7 | 5.5 | High | - | 8-Lead SOIC | - | Standard | $0.93 |
| ADUM3210 | - | 2 | 10 | - | 2.5 | - | 125 | - | 50 | +2.7V to +5.5V | - | - | - | - | 8-Lead SOIC | - | Standard | $1.78 |
| ADUM3300 | Ruggedized for System-Level ESD | 3 | 90 | - | 2.5 | - | 105 | 2 | 32 | +2.7V to +5.5V | 2.7 | 5.5 | High | - | 16-Lead SOIC | - | iCoupler, Standard | $1.71 |
| ADUM3301 | Ruggedized for System-Level ESD | 3 | 90 | - | 2.5 | - | 105 | - | 32 | +2.7V to +5.5V | 2.7 | 5.5 | High | - | 16-Lead SOIC | - | Standard | $1.71 |
| ADUM3400 | Ruggedized for System-Level ESD | 4 | 90 | - | 2.5 | - | 105 | - | 32 | +2.7V to +5.5V | 2.7 | 5.5 | High | - | 16-Lead SOIC | - | Standard | $2.28 |
| ADUM3401 | Ruggedized for System-Level ESD | 4 | 90 | - | 2.5 | - | 105 | - | 32 | +2.7V to +5.5V | 2.7 | 5.5 | High | - | 16-Lead SOIC | - | Standard |