TDA8762AMSLASH6 datasheet(17/24 Pages) PHILIPS

17 / 24 page

1996 Mar 21

Philips Semiconductors

Product speciﬁcation

10-bit high-speed low-power

analog-to-digital converter

TDA8762A

APPLICATION INFORMATION

Fig.15 Application diagram.

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).

handbook, full pagewidth

TDA8762A

OGND2

VCCO1

VCCD

VCCA

CLK

AGND1

AGND2

n.c.

VRB

VRM

VRT

MBE564

100 nF

DGND

OGND1

VCCO2

AGND

100 nF

AGND

V I

(1)

(3) (1)

(1)

(4)

(2)

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