il260-3etr13 NVE Corp., il260-3etr13 Datasheet - Page 7

• Manufacturer Part Number: il260-3etr13
• Description: High Speed Five-channel Digital Isolators
• Manufacturer: NVE Corp.

Application Diagram—Multi-Channel Delta-Sigma A/D Converter
In a typical single-channel delta-sigma ADC, the system clock is located on the isolated side of the system and only four channels of isolation are
required. With multiple ADCs configured in a channel-to-channel isolation configuration, however, clock jitter and edge placement accuracy of
the system clock must be matched between ADCs. The best solution is to use a single clock on the system side and distribute the clock to each
ADC. The five-channel IL261 is ideal, with the fifth channel used to distribute a single, isolated clock to multiple ADCs as shown below:
Channel 1
Channel n
Bridge
Bridge
Bias
Bias
Bridge +
Bridge -
Bridge +
Bridge -
Delta Sigma A/D
Delta Sigma A/D
CS5532
CS5532
OSC 2
OSC 2
7
Serial Data Out
Serial Data In
Data Clock
Chip Select
Serial Data Out
Serial Data In
Data Clock
Chip Select
Boundary
Isolation
IL260/IL261/IL262
IL261
IL261
Iso SD Out
Iso SD In
Iso Data Clock
Iso CS
Iso SD Out
Iso SD In
Iso Data Clock
Iso CS
Generator
Clock