MAX6581TG9E+ Maxim Integrated Products, MAX6581TG9E+ Datasheet - Page 18
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MAX6581TG9E+
Manufacturer Part Number
MAX6581TG9E+
Description
Board Mount Temperature Sensors 1 C ACCUR 8-CH TEMP SENSR
Manufacturer
Maxim Integrated Products
Datasheet
1.MAX6581ATG9A.pdf
(24 pages)
Specifications of MAX6581TG9E+
Full Temp Accuracy
+/- 1 C
Package / Case
TQFN-24
Digital Output - Bus Interface
I2C
Digital Output - Number Of Bits
11 bit
Supply Voltage (max)
3.6 V
Supply Voltage (min)
3 V
Description/function
Multichannel Temperature Sensor
Maximum Operating Temperature
+ 125 C
Minimum Operating Temperature
- 40 C
Supply Current
4 uA
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Table 10. ALERT Low Status Register (47h)
The accuracy of the remote temperature measurements
depends on the ideality factor (n) of the remote “diode”
(actually a transistor). The default value for the MAX6581
is n = 1.008 (channels 1–7). A thermal diode on the
substrate of an IC is normally a pnp with the base and
emitter brought out and the collector (diode connection)
grounded. DXP_ must be connected to the anode (emit-
ter) and DXN_ must be connected to the cathode (base)
±1°C Accurate 8-Channel Temperature Sensor
18
7 (MSB)
BIT
6
5
4
3
2
1
0
_____________________________________________________________________________________
Local ALERT Low
Remote ALERT
Remote ALERT
Remote ALERT
Remote ALERT
Remote ALERT
Remote ALERT
Remote ALERT
NAME
Low 7
Low 6
Low 5
Low 4
Low 3
Low 2
Low 1
Effect of Ideality Factor
STATE
POR
0
0
0
0
0
0
0
0
Channel 7 Remote-Diode Low-Alert Bit. This bit is set to logic 1 when the channel 7
remote-diode temperature falls below the programmed temperature threshold limit in
the Remote 7 ALERT Low Limit register.
Local Channel Remote-Diode Low-Alert Bit. This bit is set to logic 1 when the local
channel remote-diode temperature falls below the programmed temperature threshold
limit in the Local ALERT Low Limit register.
Channel 6 Remote-Diode Low-Alert Bit. This bit is set to logic 1 when the channel 6
remote-diode temperature falls below the programmed temperature threshold limit in
the Remote 6 ALERT Low Limit register.
Channel 5 Remote-Diode Low-Alert Bit. This bit is set to logic 1 when the channel 5
remote-diode temperature falls below the programmed temperature threshold limit in
the Remote 5 ALERT Low Limit register.
Channel 4 Remote-Diode Low-Alert Bit. This bit is set to logic 1 when the channel 4
remote-diode temperature falls below the programmed temperature threshold limit in
the Remote 4 ALERT Low Limit register.
Channel 3 Remote-Diode Low-Alert Bit. This bit is set to logic 1 when the channel 3
remote-diode temperature falls below the programmed temperature threshold limit in
the Remote 3 ALERT Low Limit register.
Channel 2 Remote-Diode Low-Alert Bit. This bit is set to logic 1 when the channel 2
remote-diode temperature falls below the programmed temperature threshold limit in
the Remote 2 ALERT Low Limit register.
Channel 1 Remote-Diode Low-Alert Bit. This bit is set to logic 1 when the channel 1
remote-diode temperature falls below the programmed temperature threshold limit in
the Remote 1 ALERT Low Limit register.
of this pnp. If a sense transistor with an ideality factor
other than 1.008 is used, the output data is different from
the data obtained with the optimum ideality factor. If
necessary, a different ideality factor value can be chosen
using the Transistor Ideality register (see Table 11). The
Ideality Select register allows each channel to have the
default ideality of 1.008 or the value programmed in the
Transistor Ideality register.
FUNCTION