ADT7317ARQ-REEL Analog Devices Inc, ADT7317ARQ-REEL Datasheet - Page 33

• Manufacturer Part Number: ADT7317ARQ-REEL
• Description: IC SENSOR TEMP 10BIT DAC 16QSOP
• Manufacturer: Analog Devices Inc

Specifications of ADT7317ARQ-REEL

• Rohs Status: RoHS non-compliant
• Function: Temp Monitoring System (Sensor)
• Topology: ADC, Comparator, Multiplexer, Register Bank
• Sensor Type: External & Internal
• Sensing Temperature: -40°C ~ 120°C, External Sensor
• Output Type: I²C™, MICROWIRE™, QSPI™, SMBus™, SPI™
• Output Alarm: No
• Output Fan: No
• Voltage - Supply: 2.7 V ~ 5.5 V
• Operating Temperature: -40°C ~ 120°C
• Mounting Type: Surface Mount
• Package / Case: 16-QSOP

External Analog Temperature Offset Register (Read/Write)
[Address 0x22]
This register contains the offset value for the external thermal
voltage output. A twos complement number can be written to
this register which is then added to the measured result before it
is converted by DAC B. Varying the value in this register has the
affect of varying the temperature span. For example, the output
voltage can represent a temperature span of −128°C to +127°C
or even 0°C to 127°C. In essence, this register changes the posi-
tion of 0 V on the temperature scale. Anything other than −128°C
to +127°C produces an upper dead band on the DAC B output.
As it is an 8-bit register, the temperature resolution is 1°C. The
default value is −40°C.
Table 51. External Analog Temperature
D7
D7
1
1
V
This limit register is an 8-bit read/write register that stores the
V
INT output (if enabled). For this to happen, the measured V
value has to be greater than the value in this register. The default
value is 5.46 V.
Table 52. V
D7
D7
1
1
V
This limit register is an 8-bit read/write register that stores the
V
INT output (if enabled). For this to happen, the measured V
value has to be less than or equal to the value in this register.
The default value is 2.7 V.
Table 53. V
D7
D7
0
1
Default settings at power-up.
Default settings at power-up.
Default settings at power-up.
1
1
1
DD
DD
DD
DD
V
upper limit that causes an interrupt and activates the INT/
V
lower limit that causes an interrupt and activates the INT/
HIGH
LOW
D6
D6
1
D6
D6
1
D6
D6
1
1
1
1
Limit Register (Read/Write) [Address 0x24]
Limit Register (Read/Write) [Address 0x23]
DD
DD
V
V
HIGH
LOW
D5
D5
0
D5
D5
0
D5
D5
1
1
1
1
Limit
Limit
D4
D4
1
D4
D4
0
D4
D4
0
1
1
1
D3
D3
1
D3
D3
0
D3
D3
0
1
1
1
D2
D2
0
D2
D2
1
D2
D2
0
1
1
1
D1
D1
0
D1
D1
1
D1
D1
1
1
1
1
D0
D0
0
D0
D0
1
D0
D0
0
1
1
1
DD
DD
Rev. B | Page 33 of 44
Internal T
This limit register is an 8-bit read/write register that stores
the twos complement of the internal temperature upper limit
that causes an interrupt and activates the INT/ INT output (if
enabled). For this to happen, the measured internal temperature
value has to be greater than the value in this register. As it is an
8-bit register, the temperature resolution is 1°C. The default
value is 100°C.
Table 54. Internal T
D7
D7
0
1
Internal T
This limit register is an 8-bit, read/write register that stores the
twos complement of the internal temperature lower limit that
causes an interrupt and activates the INT/ INT output (if enabled).
For this to happen, the measured internal temperature value has
to be more negative than or equal to the value in this register.
As it is an 8-bit register, the temperature resolution is 1°C. The
default value is −55°C.
Table 55. Internal T
D7
D7
1
1
External T
This limit register is an 8-bit, read/write register that stores
the twos complement of the external temperature upper limit
that causes an interrupt and activates the INT/ INT output (if
enabled). For this to happen, the measured external tempera-
ture value has to be greater than the value in this register. As it
is an 8-bit register, the temperature resolution is 1°C. The
default value is −1°C.
Table 56. External T
D7
D7
1
1
Default settings at power-up.
Default settings at power-up.
Default settings at power-up.
1
1
1
Positive Temperature = Limit Register Code (dec)
Negative Temperature = Limit Register Code (dec) – 256
Positive Temperature = Limit Register Code (dec)
Negative Temperature = Limit Register Code (dec) – 256
Positive Temperature = Limit Register Code (dec)
Negative Temperature = Limit Register Code (dec) – 256
D6
D6
1
D6
D6
1
D6
D6
1
1
1
1
HIGH
LOW
HIGH
Limit Register (Read/Write) [Address 0x26]
Limit Register (Read/Write) [Address 0x25]
Limit Register (Read/Write) [Address 0x27]
D5
D5
1
D5
D5
0
D5
D5
1
1
1
1
ADT7316/ADT7317/ADT7318
HIGH
LOW
HIGH
Limit
D4
D4
0
D4
D4
0
D4
D4
1
Limit
Limit
1
1
1
D3
D3
0
D3
D3
1
D3
D3
1
1
1
1
D2
D2
1
D2
D2
0
D2
D2
1
1
1
1
D1
0
D1
0
D1
1
D1
D1
D1
1
1
1
D0
D0
0
D0
D0
1
D0
D0
1
1
1
1