MAX6630MUT#TG16 Maxim Integrated Products, MAX6630MUT#TG16 Datasheet - Page 6

• Manufacturer Part Number: MAX6630MUT#TG16
• Description: IC TEMP SENSOR DIG SOT23-6
• Manufacturer: Maxim Integrated Products

Specifications of MAX6630MUT#TG16

• Function: Temp Monitoring System (Sensor)
• Topology: ADC (Sigma Delta)
• Sensor Type: Internal
• Sensing Temperature: -55°C ~ 150°C
• Output Type: SPI™
• Output Alarm: No
• Output Fan: No
• Voltage - Supply: 3 V ~ 5.5 V
• Operating Temperature: -55°C ~ 150°C
• Mounting Type: Surface Mount
• Package / Case: SOT-23-6
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Table 1. Data Output Format
Table 2. Temperature Data Format
(Two’s Complement)
12-Bit + Sign Digital Temperature Sensors
with Serial Interface
Figure 3. SPI Timing Diagram
finish. CS’s falling edge stops any conversion in
progress, and data is latched into the shift register.
Then the data clocks out at SO on SCK’s falling edge
with the sign bit (D15) first, followed by the MSB. Data
is sent in one 16-bit word, and CS must remain low until
all 16 bits are transferred. If CS goes high in the middle
of a transmission, it is necessary to wait the conversion
time (less than 300ms) before attempting a new read.
The serial data is composed of 12 + 1 data bits
(D15–D3) and 3 trailing bits (D2–D0). D2 is always low,
serving as the confirmation bit that the device has been
communicated with. The last 2 bits, D0 and D1, are
6
TEMPERATURE
Sign
D15
_______________________________________________________________________________________
-0.0625
0.0625
(°C)
150
125
-25
-55
25
0
MSB
Data
D14
SCK
SO
CS
t
DV
D13
0,1001,0110,0000
0,0111,1101,0000
0,0001,1001,0000
0,0000,0000,0001
0,0000,0000,0000
1,1111,1111,1111
1,1110,0111,0000
1,1100,1001,0000
D12
D15
DIGITAL OUTPUT (BINARY)
D15–D3
t
CSS
D11
D10
D2
0
0
0
0
0
0
0
0
t
D9
DO
D1, D0
XX
XX
XX
XX
XX
XX
XX
XX
D8
D7
undefined and are always in high-impedance mode
(Table 1). The power-up state for SO is high imped-
ance. Figure 3 shows the detailed serial timing specifi-
cations for the SPI port. The temperature data format is
in two's complement format (Table 2).
The MAX6629–MAX6632 do not have a built-in power
software shutdown mode. However, a power shutdown
mode is easily implemented utilizing an unused logic
gate. A typical CMOS or TTL logic output has enough
drive capability to serve as the power source if its out-
put voltage level exceeds 3V, as shown in Figure 1.
Drive the logic output low to provide a hardware shut-
down mode.
The MAX6629–MAX6632 can be put into idle mode by
pulling CS low. Data can be clocked out when the
device is in idle mode.
The POR supply voltage of the MAX6629–MAX6632 is
typically 1.6V. Below this supply voltage, the interface
is inactive and the data register is set to the POR state,
0°C.
When power is first applied and V
(typ), the device starts to convert, although temperature
reading is not recommended at V
D6
D5
D3
D4
D2
Data
LSB
Power Shutdown Mode
D3
D1
Power-On Reset (POR)
t
TR
D0
Low
D2
CC
CC
levels below 3.0V.
rises above 1.6V
High-Z
D1
Idle Mode
High-Z
D0