1

ISO1640-Q1

SDA2

SCL2

SCL1

GND2

GND1

VCC2

VCC1

SDA1

4

Side 1

Side 2

2 mm

maximum

2 mm

maximum

8

7

6

5

2

3

1

1 k

10 …F

10 …F

1 k

1 k

1 k

Figure 9-5. Typical ISO1640-Q1 Circuit Hookup

Power Supply Recommendations

To help ensure reliable operation at data rates and supply voltages, TI recommends connecting a 0.1-µF bypass

capacitor at the input and output supply pins (VCC1 and VCC2). The capacitors should be placed as close to the

supply pins as possible. If only a single, primary-side power supply is available in an application, isolated power

can be generated for the secondary-side with the help of a transformer driver such as TI's SN6501-Q1 device.

For such applications, detailed power supply design and transformer selection recommendations are available in

SN6501-Q1 Transformer Driver for Isolated Power Supplies (SLLSEF3).

ISO1640-Q1

SLLSFC3 – OCTOBER 2020

www.ti.com

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Product Folder Links: ISO1640-Q1