Datasheet

ADS1293

SNAS602B –FEBRUARY 2013–REVISED MARCH 2013

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Table 29. WILSON_EN3: Wilson Reference Input three Selection

Addr BIT7 BIT6 BIT5 BIT4 BIT3 BIT2 BIT1 BIT0

0x0F SELWILSON3

[7:3] RESERVED —

[2:0] SELWILSON3 Wilson reference routing for the third buffer amplifier

000: No connection to the third buffer amplifier (default)

001: Third buffer amplifier connected to input IN1

010: Third buffer amplifier connected to input IN2

011: Third buffer amplifier connected to input IN3

100: Third buffer amplifier connected to input IN4

101: Third buffer amplifier connected to input IN5

110: Third buffer amplifier connected to input IN6

Table 30. WILSON_CN: Wilson Reference Control

Addr BIT7 BIT6 BIT5 BIT4 BIT3 BIT2 BIT1 BIT0

0x10 GOLDINT WILSONINT

[7:2] RESERVED —

[1] GOLDINT Goldberger reference routing

0: Goldberger reference disabled (default)

1: Goldberger reference outputs internally connected to IN4, IN5 and IN6

Note: GOLDINT bit can not be 1 when WILSONINT is 1.

[0] WILSONINT Wilson reference routing

0: Wilson reference output internally disconnected from IN6 (default)

1: Wilson reference output internally connected to IN6

Note: WILSONINT bit can not be 1 when GOLDINT is 1.

Reference Registers

Table 31. REF_CN: Internal Reference Voltage Control

Addr BIT7 BIT6 BIT5 BIT4 BIT3 BIT2 BIT1 BIT0

0x11 SHDN_ CMREF SHDN_REF

[7:2] RESERVED —

[1] SHDN_CMREF Shut down the common-mode and right leg drive reference voltage circuitry

0: CM and RLD reference voltage is on (default)

1: Shut down CM and RLD reference voltage

Note: Enable this bit to save power when the analog block is shut down (SHDN_REF = 1).

Power-down mode automatically shuts down the common-mode and right leg drive reference.

[0] SHDN_REF Shut down internal 2.4V reference voltage

0: Internal reference voltage is on (default)

1: Shut down internal reference voltage

Note: Enabling this bit allows driving the IC with an external reference voltage on the CVREF pin.

Power-down mode automatically shuts down the internal 2.4V reference.

Product Folder Links: ADS1293