AD7329 datasheet(10/40 Pages) AD

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AD7329

Rev. 0 | Page 10 of 40

Pin No.

Mnemonic

Descriptions

MUXOUT−

Negative Multiplexer Output. This pin allows access to the on-chip track-and-hold. The voltage applied to this

pin is still a high voltage signal when the AD7329 is in differential mode. When the AD7329 is in single-ended

mode, this signal is AGND, and MUXOUT− can be connected directly to the ADCIN− pin. When the AD7329 is in

pseudo differential mode, a small dc voltage appears at this pin, and this pin should be tied to the ADCIN− pin.

ADCIN−

Negative ADC Input. This pin allows access to the track-and-hold. When the AD7329 is in single-ended mode,

this pin can be tied to MUXOUT−, which is connected to AGND. When the AD7329 is in pseudo differential

mode, this pin should be connected to MUXOUT−. When the AD7329 is in true differential mode, the voltage

applied to this pin is a high voltage signal (±10 V, ±5 V, ±2.5 V, or 0 V to +10 V).

9 to 16

VIN0 to VIN7

Analog Input 0 Through Analog Input 7. The analog inputs are multiplexed into the on-chip track-and-hold.

The analog input channel for conversion is selected by programming the channel address bits, ADD2

through ADD0, in the control register. The inputs can be configured as eight single-ended inputs, four true

differential input pairs, four pseudo differential inputs, or seven pseudo differential inputs. The configuration

of the analog inputs is selected by programming the mode bits, Mode 1 and Mode 0, in the control register.

The input range on each input channel is controlled by programming the range registers. Input ranges of

±10 V, ±5 V, ±2.5 V, or 0 V to +10 V can be selected on each analog input channel (see the Range Registers

section). On power up, VIN0 is automatically selected and the voltage on this pin appears on MUXOUT+.

AD7329 Datasheet(PDF) 10 Page - Analog Devices