CS5014 datasheet(36/40 Pages) CIRRUS

36 / 40 page

VREF – Voltage Reference, PIN

31.

The analog reference voltage which sets the analog input range. It represents positive full scale for

both bipolar and unipolar operation, and its magnitude sets negative full scale in bipolar mode.

Digital Outputs

D0 through D15 – Data Bus Outputs, PINS 2 thru

8, 10, 14, 16 thru 22.

3-state output pins. Enabled by CS and RD, they offer the converter’s output in a format

consistent with the state of BW if A0 is high. If A0 is low, bits D0-D7 offer status register data.

EOT – End Of Track, PIN

41.

If low, indicates that enough time has elapsed since the last conversion for the device to acquire

the analog input signal.

EOC – End Of Conversion, PIN

42.

This output indicates the end of a conversion or calibration cycle. It is high during a conversion

and will fall to a low state upon completion of the conversion cycle indicating valid data is

available at the output. Returns high on the first subsequent read or the start of a new conversion

cycle.

SDATA – Serial Output, PIN

44.

Presents each output data bit after it is determined by the successive approximation algorithm.

Valid on the rising edge of SCLK, data appears MSB first, LSB last, and each bit remains valid

until the next bit appears.

SCLK – Serial Clock Output, PIN

43.

Used to clock converted output data serially from the CS5012A/14/16. Serial data is stable on the

rising edge of SCLK.

Analog Outputs

REFBUF – Reference Buffer Output, PIN

32.

Reference buffer output. A 0.1

µF ceramic capacitor must be tied between this pin and VA-.

Miscellaneous

TST – Test, PIN 3

Allows access to the CS5012A/14/16’s test functions which are reserved for factory use. Must be

tied to DGND.

CS5012A, CS5014, CS5016

DS14F8

2-43

CS5012A CS5014 CS5016

DS14F9

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