DS600 Datasheet, PDF (3/4 Pages) Maxim Integrated Products – 0.5 Accurate Analog-Output Temperature Sensor

DS600 ±0.5°C Accurate Analog-Output Temperature Sensor
PIN DESCRIPTION
PIN
NAME
FUNCTION
1
V_DD
Supply Voltage. 2.7V to 5.5V
2
TO
Active-High Thermostat Output. Open-drain output transitions from low to high when the output
voltage exceeds V_TH. In shutdown mode, (SD = 1), TO is low.
3
TO
Active-Low Thermostat Output. Open-drain output transitions from high to low when the output
voltage exceeds V_TH. In shutdown mode, (SD = 1), TO is high.
4
V_OUT
Temperature Output. Outputs a voltage that is proportional to the die temperature in degrees
centigrade. In shutdown mode, this pin goes high-Z.
5
V_TH
Thermostat Trip Voltage. User-selectable voltage that sets the thermostat trip-point temperature.
TO and TO are asserted when V_OUT crosses this voltage. (No on-chip hysteresis is present).
Shutdown. Power consumption and thermal sensor function are controlled through SD. This pin
6
SD
functions as an active-high input pin. Driving this pin high puts the device in a low-power state and
discontinues thermal sensing.
7
CTG
Must be connected to GND.
8
GND
Ground.
Figure 1. Block Diagram
2.7V to 5.5V
V_DD
DS600
SD
GND
TEMPERATURE
SENSOR
CONTROL
LOGIC
LEVEL-SHIFT
BUFFER
THERMOSTAT
COMPARATOR
V_OUT
TO
TO
V_TH
TEMPERATURE MEASUREMENT
The DS600 analog temperature sensor measures it own temperature and provides these measurements to the
user in the form of an output voltage, V_OUT, that is proportional to degrees centigrade. The output voltage
characteristic is factory-calibrated for a typical output gain (∆V/∆T) of +6.45mV/°C and a DC offset (V_OS) of 509mV.
Its operating temperature range is -40°C to +125°C, corresponding to an output voltage range of 251mV to
1315mV. (V_OUT = Device Temperature (°C) x ∆V/∆T + V_OS). The DS600 has ±0.5°C accuracy over a -20°C to
+100°C temperature range and over the full 2.7V to 5.5V voltage range. Because the output voltage is positive for
the entire temperature range, there is no need for a negative supply.
Figure 2 shows the output voltage characteristic for the DS600.
3 of 4