TDA8762A Ver la hoja de datos (PDF) - Philips Electronics

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TDA8762A

10-bit high-speed low-power analog-to-digital converter

Philips Electronics 

Philips Semiconductors

10-bit high-speed low-power

analog-to-digital converter

APPLICATION INFORMATION

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CLK 1

28 VCCO2

TC 2

VCCA 3

27 OGND2

26 IR

AGND1 4

25 D9

AGND2 5

(1) VRB 6

100 nF

(3) (1)VRM 7

AGND

100 nF

(4) V I 8

AGND

(1) VRT 9

100 nF

AGND

OE 10

VCCD 11

TDA8762A

24 D8

23 D7

22 D6

21 D5

20 D4

19 D3

18 D2

DGND 12

VCCO1 13

OGND1 14

17 D1

16 D0

15 n.c.(2)

MBE564

Product specification

TDA8762A

The analog and digital supplies should be separated and decoupled.

The external voltage reference generator must be built such that a good supply voltage ripple rejection is achieved with respect to the LSB value.

Eventually, the reference ladder voltages can be derived from a well regulated VCCA supply through a resistor bridge and a decoupled capacitor.

(1) VRB, VRM and VRT are decoupled to AGND.

(2) Pin 15 should be connected to DGND in order to prevent noise influence.

(3) When VRM is not used, pin 7 can be left open, avoiding the decoupling capacitor. In any case, this pin must not be grounded.

(4) When analog input signal is AC coupled, an input bias or a clamping level must be applied to VI input (pin 8).

Fig.15 Application diagram.

1996 Mar 21

17

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