TABLE 3. ADC12130 and ADC12132* Multiplexer Addressing

MUX

Address

Analog Channel Addressed and

Assignment with A/DIN1 tied to MUXOUT1

and A/DIN2 tied to MUXOUT2

A/D Input Polarity

Assignment

Multiplexer Output

Channel Assignment

Mode

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.

* ADC12132 is obsolete; shown for reference only.

TABLE 4. Mode Programming

ADC12138

DI0

DI1

DI2

DI3

DI4

DI5

DI6

DI7

Mode Selected

(Current)

DO Format

(next Conversion

Cycle)

ADC12130

and

ADC12132 *

DI0

DI1

DI2

DI3

DI4

DI5

See Table 2 or Table 3

L

L

L

L

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

L

H

L

H

12 Bit Conversion

16 or 17 Bit LSB First

LLLL

H

L

L

L

Auto Cal

No Change

LLLL

H

L

L

H

Auto Zero

No Change

LLLL

H

L

H

L

Power Up

No Change

LLLL

H

L

H

H

Power Down

No Change

LLLL

H

H

L

L

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

H

H

H

H

User Mode

No Change

H

XXX

H

H

H

H

Test Mode

(CH1–CH7 become Active Outputs)

No Change

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

* ADC12132 is obsolete; shown for reference only.

TABLE 5. Conversion/Read Data Only Mode Programming

CS

CONV

PD

Mode

L

L

L

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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