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please explain what T-, T+, ~DRDY, BIAS, DNC, DGND, AVDD, DVDD, SDO, AGND, ~CS, ...
freeflyfreak

freeflyfreak

how do i close a library item I opened by mistake
2y
freeflyfreak

freeflyfreak

@copilot please explain what T-, T+, ~DRDY, BIAS, DNC, DGND, AVDD, DVDD, SDO, AGND, ~CS, ~FAULT, SDI, SCK do.
2y

copilot

Sure, these are the terminals of the MAX31856 Precision Thermocouple to Digital Converter with Linearization by Maxim Integrated. Here's a brief overview:
  • T- (Pin 3): This is the negative input of the thermocouple.
  • T+ (Pin 4): This is the positive input of the thermocouple.
  • ~DRDY (Pin 7): This stands for "Data Ready". It's an output pin that goes low when a new temperature reading is available from the device. This can be very handy for interrupt-driven designs.
  • BIAS (Pin 2): This is the bias current terminal. It is tied to an internal current source in the chip.
  • DNC (Pin 6): This stands for "Do Not Connect". As the name implies, no connection should be made to this pin.
  • DGND (Pin 14): This stands for "Digital Ground". It's the ground return path for the digital portion of the circuit.
  • AVDD (Pin 5): This stands for "Analog Power". It's the power supply for the analog parts of the IC. Typically, this should be a clean and noise-free power supply.
  • DVDD (Pin 8): This stands for "Digital Power". It's the power supply for the digital parts of the IC.
  • SDO (Pin 11): This stands for "Serial Data Out". It's the Data output of the SPI interface.
  • AGND (Pin 1): This stands for "Analog Ground". It's the ground return path for the analog portion of the circuit.
  • ~CS (Pin 9): This stands for "Chip Select". It's an active-low signal that begins an SPI transaction when pulled low.
  • ~FAULT (Pin 13): This is an active-low fault output. It goes low if the device detects a fault condition.
  • SDI (Pin 12): This stands for "Serial Data In". It is the Data input of the SPI interface.
  • SCK (Pin 10): This stands for "Serial Clock". It provides the timing for the data bits in the SPI interface.
Note: The "~" symbol represents the negation. When it's in front of a signal (like ~CS, ~DRDY, and ~FAULT), it indicates that the signal is active low. i.e., a '0' operates the function and a '1' shuts the function off.
2y
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T-
T+
~DRDY
BIAS
DNC
DGND
AVDD
DVDD
SDO
AGND
~CS
~FAULT
SDI
SCK
Name
Pin #
Type
Part Type
Terminal Order
Terminal Type
AGND
1
Unspecified
Terminal
powerIn
BIAS
2
Unspecified
Terminal
INPUT
T-
3
Unspecified
Terminal
INPUT
T+
4
Unspecified
Terminal
INPUT
AVDD
5
Unspecified
Terminal
powerIn
DNC
6
Unspecified
Terminal
notConnected
~DRDY
7
Unspecified
Terminal
output
DVDD
8
Unspecified
Terminal
powerIn
~CS
9
Unspecified
Terminal
INPUT
SCK
10
Unspecified
Terminal
INPUT
SDO
11
Unspecified
Terminal
output
SDI
12
Unspecified
Terminal
INPUT
~FAULT
13
Unspecified
Terminal
output
DGND
14
Unspecified
Terminal
powerIn

MAX31856

MAX31856 thumbnail