Philips TDA8767

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 =V

CCA −2V

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

CCA −2V

Table 3 Mode selection

Note

1. Where: X = don’t care.

Table 4 Sample-and-hold selection

CODE VIVIIR 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 VIIR 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 D0to D11 and IR

0 0 binary; active

1 0 two’s complement; active

X(1) 1 high impedance

SH SAMPLE-AND-HOLD

1 active

0 inactive; tracking mode