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ADUCM330WFS Datasheet(Fiches technique) 14 Page - Analog Devices

Numéro de pièce ADUCM330WFS
Description  Integrated, Precision Battery Sensor for Automotive Systems
Télécharger  17 Pages
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Fabricant  AD [Analog Devices]
Site Internet  http://www.analog.com
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ADuCM330WFS/ADuCM331WFS
Data Sheet
Rev. A | Page 14 of 17
Pin No.
Mnemonic
Type1
Description
8
GPIO4/IRQ1/LC_RX/
ECLKIN/LIN_RX
I/O
General-Purpose Input/Output 4 (GPIO4). By default, this pin is configured as an input. This pin is
used by the kernel in external mode. See the ADuCM330WFS/ADuCM331WFS Hardware Reference
Manual for more information. The pin has an internal 25 kΩ pull-up resistor to 33VDD and can be
left unconnected when not in use.
Interrupt Request (IRQ1). This pin can be configured as the External Interrupt Request 1.
LIN Conformance Receiver (LC_RX). This pin can be connected to the LIN physical receiver for
LIN conformance testing.
External Clock (ECLKIN). This pin can be configured as the external clock input.
Local Interconnect Network Receiver (LIN_RX). This pin can be configured as the receiving pin
for LIN frames in external transceiver mode.
9
GND_SW
I
Switch to Internal Analog Ground Reference. This pin is the negative input for the external
temperature channel.
10
VTEMP
I
External Pin for Negative Temperature Coefficient/Positive Temperature Coefficient
Temperature Measurement.
11
IIN+_AUX
S
Auxiliary Positive Differential Input Pin. If not used, connect this pin to AGND.
12
IIN+
I
Positive Differential Input for Current Channel.
13
IIN−
I
Negative Differential Input for Current Channel.
14
IIN−_AUX
S
Auxiliary Negative Differential Input Pin. If not used, connect this pin to AGND.
15
VINP_AUX
S
Auxiliary Input Voltage Positive Channel. If not used, connect this pin to AGND.
16
VINM_AUX
S
Auxiliary Input Voltage Negative Channel. If not used, connect this pin to AGND.
17
VREF
S
Voltage Reference Pin. Connect this pin via a 470 nF capacitor to ground. This pin can also be
used to input an external voltage reference. This pin cannot be used to supply an external circuit.
18
AGND
S
Ground Reference for On-Chip Precision Analog Circuits.
19
AVDD18
S
Supply from Analog LDO. Do not connect this pin to an external circuit.2
20
33VDD
S
3.3 V Supply. Connect to DVDD33. Do not connect this pin to an external circuit.2
21
DVDD33
S
3.3 V Supply. Connect to 33VDD. Do not connect this pin to an external circuit.2
22
DVDD18
S
1.8 V Supply. Do not connect this pin to a low impedance external circuit.2
23, 25, 31
DGND
S
Ground Reference for On-Chip Digital Circuits.
24
DNC
Do Not Connect. Do not connect to this pin.
26
VDD
S
Battery Power Supply for On-Chip Regulator.
27
VBAT
S
Battery Voltage Input for Resistor Divider.
28
LIN
I/O
Local Interconnect Network Physical Interface Input/Output.
29
IO_VSS
S
Ground Reference for LIN.
30
VSS
S
Ground Reference. This pin is the ground reference for the internal voltage regulators.
32
GPIO5/LC_TX/LIN_TX
I/O
General-Purpose Input/Output 5 (GPIO5). By default, this pin is configured as an input. This pin
is checked by the kernel on every reset. See the ADuCM330WFS/ADuCM331WFS Hardware
Reference Manual for more information. The pin has an internal 25 kΩ pull-up resistor to 33VDD
and can be left unconnected when not in use.
LIN Conformance Transmitter (LC_TX). This pin can be connected to the LIN physical
transmitter for LIN conformance testing.
Local Interconnect Network Transmitter (LIN_TX). This pin can be configured as the transmitter
pin for LIN frames in external transceiver mode.
33
EPAD
Exposed Pad. It is recommended that the exposed pad be soldered to ground for thermal reasons.
1
I is input, I/O is input/output, and S is supply.
2
Using the 1.8 V or 3.3 V supply to power an external circuit can have POR, electromagnetic compliance (EMC), and self heating implications. Device evaluation and
testing completed without an external load attached.




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