TDA8767HSLASH2 datasheet(10/20 Pages) PHILIPS

10 / 20 page

1999 Feb 16

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

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

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

2.0

3.0

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 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

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 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

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

overﬂow

>3.0

<2.0

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

BINARY OUTPUTS

TWO’S COMPLEMENT

OUTPUTS

D11 to D0

underﬂow

<1.5

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

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

1.5

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 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

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 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

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

overﬂow

>3.5

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

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

D0 to D11 and IR

binary; active

two’s complement; active

X(1)

high impedance

SAMPLE-AND-HOLD

active

inactive; tracking mode

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