TABLE 3. ADC12130 and ADC12132 Multiplexer Addressing

Analog Channel Addressed

A/D Input

Multiplexer

Mode

MUX

and Assignment

Polarity

Output

Address

with A/DIN1 tied to MUXOUT1

Assignment

Channel

and A/DIN2 tied to MUXOUT2

Assignment

DI0

DI1

CH0

CH1

COM

A/DIN1

A/DIN2

MUXOUT1

MUXOUT2

L

L

+

−

+

−

CH0

CH1

Differential

L

H

−

+

−

+

CH0

CH1

H

L

+

−

+

−

CH0

COM

Single-Ended

H

H

+

−

+

−

CH1

COM

Note: ADC12130 do not have A/DIN1, A/DIN2, MUXOUT1 and MUXOUT2 pins.

TABLE 4. Mode Programming

ADC12138

DI0

DI1

DI2

DI3

DI4

DI5

DI6

DI7

Mode Selected

(Current)

DO Format

(next Conversion

Cycle)

ADC12130

and

DI0

DI1

DI2

DI3

DI4

DI5

ADC12132

See

Table 2 or Table

3

LLLL

12 Bit Conversion

12 or 13 Bit MSB First

See

Table 2 or Table

3

L

L

L

H

12 Bit Conversion

16 or 17 Bit MSB First

See

Table 2 or Table

3

L

H

L

L

12 Bit Conversion

12 or 13 Bit LSB First

See

Table 2 or Table

3

LHLH

12 Bit Conversion

16 or 17 Bit LSB First

L

L

L

L

H

L

L

L

Auto Cal

No Change

L

L

L

L

H

L

L

H

Auto Zero

No Change

L

L

L

LHLHL

Power Up

No Change

L

L

L

LHLH

H

Power Down

No Change

LLLL

H

H

LL

Read Status Register

No Change

LLLL

H

H

L

H

Data Out without Sign

No Change

H

L

L

L

H

H

L

H

Data Out with Sign

No Change

LLLL

H

H

H

L

Acquisition Time — 6 CCLK Cycles

No Change

L

H

L

L

H

H

H

L

Acquisition Time — 10 CCLK Cycles

No Change

H

L

L

L

H

H

H

L

Acquisition Time — 18 CCLK Cycles

No Change

H

H

L

L

H

H

H

L

Acquisition Time — 34 CCLK Cycles

No Change

LLLL

HHHH

User Mode

No Change

H

X

X

X

HHHH

Test Mode

No Change

(CH1–CH7 become Active Outputs)

Note: The A/D powers up with no Auto Cal, no Auto Zero, 10 CCLK acquisition time, 12-bit + sign conversion, power up, 12- or 13-bit MSB First, and user mode.

X = Don’t Care

TABLE 5. Conversion/Read Data Only Mode Programming

CS

CONV

PD

Mode

LLL

See

Table 4 for Mode

L

H

L

Read Only (Previous DO Format). No Conversion.

H

X

L

Idle

X

X

H

Power Down

X = Don’t Care

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