ADS4449 datasheet(34/54 Pages) TI

34 / 54 page

ADS4449

SBAS603 – APRIL 2013

www.ti.com

DIS OVR

SEL OVR

GLOBAL POWER DOWN

CONFIG PDN PIN

ON LSB

Bits D[7:5]

Always write '0'

Bit D4

DIS OVR ON LSB

0 = Effective ADC resolution is 13 bits (the LSB of a 14-bit output is OVR) (default)

1 = ADC resolution is 14 bits

Bit D3

SEL OVR: OVR selection

0 = Fast OVR selected (default)

1 = Normal OVR selected. See the Overrange Indication (OVRxx) section for details.

Bit D2

GLOBAL POWER DOWN

0 = Normal operation (default)

1 = Global power down. All ADC channels, internal references, and output buffers are

powered down. Wakeup time from this mode is slow (100 µs).

Bit D1

Always write '0'

Bit D0

CONFIG PDN PIN

Use this bit to configure PDN pin.

0 = The PDN pin functions as a standby pin. All channels are put in standby. Wake-up

time from standby mode is fast (10 µs). (default)

1 = The PDN pin functions as a global power-down pin. All ADC channels, internal

references, and output buffers are powered down. Wake-up time from global power

mode is slow (100 µs).

CLOCKOUT DELAY PROG CH AB

Bits D[7:4]

Always write '0'

Bits D[6:3]

CLOCKOUT DELAY PROG CH AB

These bits program the clock out delay for channels A and B, see Table 5.

Submit Documentation Feedback

Product Folder Links: ADS4449

ADS4449 Datasheet(PDF) 34 Page - Texas Instruments