TDA8767 datasheet(10/20 Pages) PHILIPS

Teilenummer	TDA8767

Bauteilbeschribung	12-bit high-speed Analog-to-Digital Converter ADC

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Hersteller	PHILIPS [NXP Semiconductors]

Direct Link	http://www.nxp.com

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10 / 20 page

1999 Feb 16

10

Philips Semiconductors

Preliminary speciﬁcation

12-bit high-speed Analog-to-Digital

Converter (ADC)

TDA8767

Table 1

Output coding with differential inputs (typical values to AGND); VI(p-p) − VI(p-p) = 2.0 V; Vref =VCCA − 2V

Table 2

Output coding with single input (typical values to AGND); VFS = 2.0 V (p-p); Vref =VCCA − 2V

Table 3 Mode selection

Note

1. Where: X = don’t care.

Table 4 Sample-and-hold selection

CODE

VI

IR

BINARY OUTPUTS

TWO’S COMPLEMENT

OUTPUTS

D11 to D0

underﬂow

<2.0

>3.0

0

0 0 0 0 0 0 0 0 0 0 0 0

1 0 0 0 0 0 0 0 0 0 0 0

0

2.0

3.0

1

0 0 0 0 0 0 0 0 0 0 0 0

1 0 0 0 0 0 0 0 0 0 0 0

1

−−

1

0 0 0 0 0 0 0 0 0 0 01

1 0 0 0 0 0 0 0 0 0 0 1

↓−

−↓

↓

2047

2.5

1

0 1 1 1 1 1 1 1 1 1 1 1

1 1 1 1 1 1 1 1 1 1 1 1

↓−

−↓

↓

4094

−−

1

1 1 1 1 1 1 1 1 1 1 1 0

0 1 1 1 1 1 1 1 1 1 1 0

4095

3.0

2.0

1

1 1 1 1 1 1 1 1 1 1 1 1

0 1 1 1 1 1 1 1 1 1 1 1

overﬂow

>3.0

<2.0

0

1 1 1 1 1 1 1 1 1 1 1 1

0 1 1 1 1 1 1 1 1 1 1 1

CODE

VI

IR

BINARY OUTPUTS

TWO’S COMPLEMENT

OUTPUTS

D11 to D0

underﬂow

<1.5

0

0 0 0 0 0 0 0 0 0 0 0 0

1 0 0 0 0 0 0 0 0 0 0 0

0

1.5

1

0 0 0 0 0 0 0 0 0 0 0 0

1 0 0 0 0 0 0 0 0 0 0 0

1

−

1

0 0 0 0 0 0 0 0 0 0 01

1 0 0 0 0 0 0 0 0 0 0 1

↓−↓

↓

2047

2.5

1

0 1 1 1 1 1 1 1 1 1 1 1

1 1 1 1 1 1 1 1 1 1 1 1

↓−↓

↓

4094

−

1

1 1 1 1 1 1 1 1 1 1 1 0

0 1 1 1 1 1 1 1 1 1 1 0

4095

3.5

1

1 1 1 1 1 1 1 1 1 1 1 1

0 1 1 1 1 1 1 1 1 1 1 1

overﬂow

>3.5

0

1 1 1 1 1 1 1 1 1 1 1 1

0 1 1 1 1 1 1 1 1 1 1 1

TC

OE

D0 to D11 and IR

0

binary; active

1

0

two’s complement; active

X(1)

1

high impedance

SH

SAMPLE-AND-HOLD

1

active

0

inactive; tracking mode

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