
Philips Semiconductors
Product data
NE1617A
Temperature monitor for microprocessor systems
2001 Dec 14
5
ELECTRICAL CHARACTERISTICS
VDD = 3.3 V; Tamb = 0 °C to +125 °C, unless otherwise noted.
PARAMETER
CONDITIONS
LIMITS
UNIT
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
Temperature resolution
1
°C
Local temperature error
Tamb = +60 °C to +100 °C
<
±1
±2
°C
Local temperature error
Tamb = 0 °C to +125 °C
<
±2
±3
°C
Remote temperature error
Tremote = +60 °C to +100 °C
±3
°C
Remote temperature error
Tremote = 0 °C to +125 °C
±5
°C
Under voltage lockout1
VDD supply (Note 2)
2.7
2.95
V
Power-on reset threshold
VDD supply (falling edge) (Note 3)
1.0
2.5
V
Power supply current (average)
Conversion rate = 0.25/sec
70
A
Power supply current (average)
Conversion rate = 2/sec
180
A
Power supply current (standby)
SMBus inactive
3
10
A
Conversion time
From stop bit to conversion complete,
both channels
170
ms
Conversion rate error
Percentage error in programmed rate
–30
+30
%
Remote sensor source current
HIGH level
100
A
Remote sensor source current
LOW level
10
A
Address pin bias current
Momentary as the address is being read
(Notes 4 and 5)
160
A
NOTES:
1. Definition of Under Voltage Lockout (UVL): The value of VDD below which the internal A/D converter is disabled. This is designed to be a
minimum of 200 mV above the power-on reset. During the time that it is disabled, the temperature that is in the “read temperature registers”
will remain at the value that it was before the A/D was disabled. This is done to eliminate the possibility of reading unexpected false
temperatures due to the A/D converter not working correctly due to low voltage. In case of power-up (rising VDD), the reading that is stored
in the “read temperature registers” will be the default value of 0
°C. As soon as VDD has risen to the value of UVL, the A/D will function
correctly and normal temperatures will be read.
2. VDD (rising edge) voltage below which the ADC is disabled.
3. VDD (falling edge) voltage below which the logic is reset.
4. Address is read a power up and at start of conversion for all conversions except the fastest rate.
5. Due to the bias current, any pull-up/down resistors should be
≤ 2 k.