AD5758 datasheet(64/72 Pages) AD

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AD5758

Data Sheet

Rev. 0 | Page 64 of 72

Bits

Bit Name

Description

Reset

Access

[10:8]

SEQUENCE_COMMAND

ADC sequence command bits.

0x0

R/W

000: set the depth of the sequencer. The contents of the SEQUENCE_DATA bits

correspond to the depth of the sequencer (000 = 1 channel, 001 = 2 channels, …,

111 = 8 channels).

001: set the channel SEQUENCE_DATA[2:0] with the ADC input, ADC_IP_SELECT[4:0].

010: enable/disable key sequencer mode, depending on the contents of the

SEQUENCE_DATA[2:0] bits. SEQUENCE_DATA[2:0] = 001: enables the key sequencer.

SEQUENCE_DATA[2:0] ≠ 001: disables the key sequencer.

011: enable/disable automatic sequencer mode, depending on the contents of the

SEQUENCE_DATA[2:0] bits. SEQUENCE_DATA[2:0] = 001: enables the automatic

sequencer. SEQUENCE_DATA[2:0] ≠ 001: disables the automatic sequencer.

100: initiate a single conversion on the ADC_IP_SELECT (Bits[4:0]) input; this disables

autosequencing. The SEQUENCE_DATA bits, Bits[2:0], are not applicable for this

command.

101: set up the ADC for future individual ADC conversions (if not using the key

sequencer) using the 0x1ADC key code. The SEQUENCE_DATA bits, Bits[2:0], are not

applicable for this command.

110: reserved (do not select this option).

111: reserved (do not select this option).

[7:5]

SEQUENCE_DATA

The function of the contents of this field is dependent on the command being

issued by the SEQUENCE_COMMAND bits.

0x0

R/W

[4:0]

ADC_IP_SELECT

Select which node to multiplex to the ADC. All unlisted 5-bit codes are reserved

and return an ADC result of zero.

0x0

R/W

00000: main die temperature.

00001: dc-to-dc die temperature.

00010: reserved (do not select this option).

00011: REFIN. The INT_EN bit in the DAC_CONFIG register must be set for the REFIN

buffer to be powered up and this node to be available to the ADC.

00100: REF2; internal 1.23 V reference voltage.

00101: reserved (do not select this option).

00110: reserved (do not select this option).

01100: reserved (do not select this option).

01101: voltage on the +VSENSE buffer output.

01110: voltage on the −VSENSE buffer output

10000: reserved (do not select this option).

10001: reserved (do not select this option).

10010: reserved (do not select this option).

10011: reserved (do not select this option).

10100: INT_AVCC.

10101: VLDO.

10110: VLOGIC.

10111: Internal current monitor output voltage. The output range of this node is

0 V to 2 V.

11000: REFGND.

11001: AGND.

11010: DGND.

11011: VDPC+.

11100: AVDD2.

11101: AVSS.

11110: dc-to-dc die node; configured in the DCDC_CONFIG2 register.

11111: REFOUT.

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