Philips TDA8767 User Manual download pdf (Page 10)

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); V

I(p-p)

− V

I(p-p)

= 2.0 V; V

ref

CCA

− 2V

Table 2 Output coding with single input (typical values to AGND); V

= 2.0 V (p-p); V

ref

CCA

− 2V

Table 3 Mode selection

Note

1. Where: X = don’t care.

Table 4 Sample-and-hold selection

CODE V

BINARY OUTPUTS

TWO’S COMPLEMENT

OUTPUTS

D11 to D0 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 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 V

BINARY OUTPUTS

TWO’S COMPLEMENT

OUTPUTS

D11 to D0 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 0 binary; active

1 0 two’s complement; active

(1)

1 high impedance

SH SAMPLE-AND-HOLD

1 active

0 inactive; tracking mode

1 2 ... 5 6 7 8 9 10 11 12 13 14 15 ... 19 20

DATA SHEET 1
Converter (ADC) 10

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Philips TDA8767 User Manual Page 10

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