MIC3003GML datasheet(19/75 Pages) MICREL

19 / 75 page

Micrel, Inc.

MIC3003

November 2009

M9999-111209-C

hbwhelp@micrel.com or (408) 955-1690

Channel

ADC Resolution

(bits)

Conditions

Input Range (V)

LSB

(1)

TEMP

8 or 9

N/A

1°C or 0.5°C

VAUX

See Table 6

GAIN = 0; BIASREF = 0

GNDA - VREF

GAIN = 0; BIASREF = 1

VDDA – (VDDA – VREF)

4.77mV

GAIN = 1; BIASREF = 0

GNDA - VREF/4

VMPD

GAIN = 1; BIASREF = 1

VDDA – (VDDA – VREF/4)

1.17mV

VILD- = VDDA

VDDA – (VDDA – VREF)

VILD

VILD- = GNDA

GNDA - VREF

4.77mV

VRX

RXPOT = 00

0 - VREF

0.298mV

Table 5. A/D Input Signal Ranges and Resolutions

Note:

1. Assumes typical VREF value of 1.22V.

Channel

VAUX [2:0]

Input Range (V)

LSB

(1) (mV)

VIN

000 = 00h

0.5V to 5.5V

25.6mV

VDDA

001 = 01h

0.5V to 5.5V

25.6mV

VBIAS

010 = 02h

0.5V to 5.5V

25.6mV

VMOD

011 = 03h

0.5V to 5.5V

25.6mV

APCDAC

100 = 04h

0V to VREF

4.77mV

MODDAC

101 = 05h

0V to VREF

4.77mV

FLTDAC

110 = 06h

0V to VREF

4.77mV

Table 6. VAUX Input Signal Ranges and Resolutions

Note:

1. Assumes typical VREF value of 1.22V.

Alarms and Warnings Interrupt Source Masking

Alarm and warning violations set the flags in the Alarm

and Warning Status Registers, and also assert the

interrupt output if they are not masked. If an alarm or

warning is masked, it will not set the interrupt. Table 8

shows the locations of the masking bits. The warning or

alarm is masked if the corresponding bit is set to 1.

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