AMC7836 Datasheet, PDF (5/88 Pages) Texas Instruments – AMC7836 High-Density, 12-Bit Analog Monitor and Control Solution With Multichannel ADC, Bipolar DACs, Temperature Sensor, and GPIO Ports

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NAME
DAC_C8
DAC_C9
DAC_C10
DAC_C11
DAC_D12
DAC_D13
DAC_D14
DAC_D15
DGND
DV_DD
PIN
NO.
51
52
54
55
58
59
61
62
64
63
GPIO0/ALARMIN
7
GPIO0/ALARMOUT
8
GPIO2/ADCTRIG
9
GPIO3/DAV
10
GPIO4
11
GPIO5
12
GPIO6
13
GPIO7
14
IOV_DD
1
LV_ADC16
39
LV_ADC17
38
LV_ADC18
37
LV_ADC19
36
LV_ADC20
35
REF_CMP
49
RESET
2
SCLK
5
SDI
4
SDO
3
Thermal Pad
—
AMC7836
SLAS986C – NOVEMBER 2014 – REVISED APRIL 2016
Pin Functions (continued)
DESCRIPTION
I/O
O
O
DAC group C. These DAC channels share the same range and clamp voltage.
O
O
O
O
DAC group D. These DAC channels share the same range and clamp voltage.
O
O
Digital ground. This pin is the ground reference point for all digital circuitry on the device.
I Ideally, the analog and digital grounds should be at the same potential (GND) and must not
differ by more than ±0.3 V.
I Digital supply voltage (4.5 V to 5.5 V). This pin must have the same value as the AV_DD pin.
General-purpose digital I/O 0 (default). This pin is a bidirectional digital input/output (I/O) with
I/O
an internal 48-kΩ pullup resistor to the IOV_DD pin. Alternatively the pin can be set to operate
as the digital input ALARMIN which is an active-low alarm-control signal. If unused this pin can
be left floating.
General purpose digital I/O 1 (default). This pin is a bidirectional digital I/O with an internal 48-
I/O
kΩ pullup resistor to the IOV_DD pin. Alternatively the pin can be set to operate as ALARMOUT
which is an open drain global alarm output. This pin goes low (active) when an alarm event is
detected. If unused this pin can be left floating.
General purpose digital I/O 2 (default). This pin is a bidirectional digital I/O with internal 48-kΩ
I/O
pullup resistor to the IOV_DD pin. Alternatively the pin can be set to operate as ADCTRIG which
is an active-low external conversion trigger. The falling edge of this pin begins the sampling
and conversion of the ADC. If unused this pin can be left floating.
General purpose digital I/O 3 (default). This pin is a bidirectional digital I/O with internal 48-kΩ
pullup resistor to the IOV_DD pin. Alternatively the pin can be set to operate as DAV which is an
I/O
active-low data-available indicator output. In direct mode, the DAV pin goes low (active) when
the conversion ends. In auto mode, a 1-µs pulse (active low) appears on this pin when a
conversion cycle finishes. The DAV pin remains high when deactivated. If unused this pin can
be left floating.
I/O
I/O _{General purpose digital I/O. These pins are bidirectional digital I/Os with an internal 48-kΩ}
I/O ^{pullup resistor to the IOV}DD ^{pin. If unused these pins can be left floating.}
I/O
I
I/O supply voltage (1.8 V to 5.5 V). This pin sets the I/O operating voltage and threshold levels.
The voltage on this pin must not be greater than the value of the DV_DD pin.
I
I
I
General purpose analog inputs. These channels are used for general monitoring. The input
range of these pins is 0 to 2 × V_ref.
I
I
O
Internal-reference compensation-capacitor connection. Connect a 4.7-μF capacitor between
this pin and the AGND2 pin.
I Active-low reset input. Logic low on this pin causes the device to perform a hardware reset.
I Serial interface clock.
I
Serial-interface data input. Data is clocked into the input shift register on each rising edge of
the SCLK pin.
O
Serial-interface data output. The SDO pin is in high impedance when the CS pin is high. Data
is clocked out of the input shift register on each falling edge of the SCLK pin.
I
The thermal pad is located on the bottom-side of the device package. The thermal pad should
be tied to the same potential as the AV_EE pin or left disconnected.
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