1kW

40.2W

4 0 .2 W

1 kW

27 0 W

27 0 W

O P A 1 63 2

1nF

1nF

1kW

Diffe re n tia l

An a log Inp u t

2 .7 n F

0 .0 1µF

10 µF

- 1 5 V

2

1

8

E N

V

O CM

100pF

To V

To V

From

Buffered V

CO M

in Figure 14.

7

6

3

4

5

10µF

0 .0 1µF

+1 5 V

(+)

+

+

(- )

1 0 0 p F

0 .1 µF

V

or

V

P C M 4 20 2

O P A 22 7

or equivalent

To

Buffered V

C OM

in Figure 13.

0.1µF

PCM4202-EP

www.ti.com

SGLS388

– JUNE 2007

Figure 13. Example Input Buffer Circuit

COMPATIBILITY WITH THE PCM1804

Although the PCM4202 and PCM1804 are pin- and function-compatible, there are a few differences between the

two devices that the designer should be aware of. These differences are noted here for clarity.

•

the PCM4202 having an internal 3-V voltage reference, and the PCM1804 having an internal 2.5-V voltage

reference.

•

The PCM1804 includes 5-V tolerant digital inputs. The PCM4202 does not include these because the digital

inputs are designed for interfacing to 3.3 V logic.

•

The reset pin (RST) pin of the PCM4202 has an internal pull-up resistor. For the PCM1804, this pin has an

internal pull-down resistor.

•

When operating in Master mode with Single Rate sampling selected, the audio serial port bit clock (BCK) is

•

The following pins on the PCM4202 and PCM1804 have different names, but they perform the same

functions.

Copyright

© 2007, Texas Instruments Incorporated

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Product Folder Link(s): PCM4202-EP