Datasheet

NOTE:(1)Thermalpadmustbeconnectedtotheanalogground;refertothepackagedrawingformoreinformation.
CH7
CH6
CH5
CH4
AVDD
AGND
CH3
CH2
CH1
CH0
CONVERT
SCLK
MOSI
MISO
SS
BVDD
DVDD
DGND
GPIO−4
GPIO−5
31
32
33
34
35
36
37
38
39
40
20
19
18
17
16
15
14
13
12
11
282930 27 26 25 24 23 22 21
321 4 5 6 7 8 9 10
GPIO−3/ALR3
RESET DAC7_OUT EXT_REF_IN
GALR
DAV
ELDAC
ISET_RESISTOR
PRECISION_I_OUTPUT
DAC0_OUT
SGND
DAC1_OUT
DAC2_OUT DAC3_OUT
GPIO−2/ALR2
GPIO−1/ALR1 GPIO−0/ALR0
DAC6_OUT
DAC5_OUT DAC4_OUT
AMC7823
ThermalPad
(1)
AMC7823
SLAS453F –APRIL 2005–REVISED MARCH 2012 www.ti.com
PIN CONFIGURATION
RTA PACKAGE
QFN-40
(TOP VIEW)
TERMINAL FUNCTIONS
TERMINAL
DESCRIPTION
NO. NAME
Global analog input out-of-range alarm. GALR pin goes low (active) when one (or more) of the first
1 GALR
four accessed analog inputs is out of preset range.
Data available indicator. In the direct mode, DAV pin goes low (active) when the conversion finishes.
2 DAV In Auto-mode, a 2μs pulse (active low) appears on this pin when conversion cycle finishes (see ADC
Operation and Registers for details). DAV stays high when deactivated.
External DAC synchronous load trigger. DACs that have external synchronous load selected are
3 ELDAC
updated simultaneously by the rising edge of ELDAC.
The resistor connected from analog supply to this pin sets the current output from the pin
4 ISET_RESISTOR
PRECISION_I_OUTPUT.
5 PRECISION_I_OUTPUT Current output to drive a thermistor.
6 DAC 0_OUT Output of DAC 0
7 DAC 1_OUT Output of DAC 1
8 DAC 2_OUT Output of DAC 2
9 DAC 3_OUT Output of DAC 3
Analog input signal ground. This pin must connect to the ground of the analog input source in order
10 SGND
to minimize digital noise.
8 Submit Documentation Feedback Copyright © 2005–2012, Texas Instruments Incorporated
Product Folder Link(s): AMC7823