ne1618 NXP Semiconductors, ne1618 Datasheet - Page 5

• Manufacturer Part Number: ne1618
• Description: Temperature Monitor For Microprocessor Systems
• Manufacturer: NXP Semiconductors

1. The NE1618 is optimized for 3.3 V
2. Guaranteed by design.
3. Definition of Under Voltage Lockout (UVL): The value of V
4. V
5. V
6. For conversion rate
7. Address is read at power-up and at start of conversion for all conversions except the fastest rate.
8. Due to the bias current, any pull-up/down resistors should be
Philips Semiconductors
ELECTRICAL CHARACTERISTICS
V
NOTES:
2002 Jan 04
Temperature resolution
Local temperature error
Remote temperature error
(1 C
(1 C resolution)
Extended Remote temp error
(0 12
(0.125 C resolution)
Extended relative temp error
(0 12
(0.125 C resolution)
Under voltage lockout
Power-on reset threshold
Power supply current (average)
Power supply current (standby)
Conversion time (busy duration)
Conversion rate error
Remote sensor source current
Address pin bias current
DD
Temperature monitor for microprocessor systems
sample tested in production.
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 V
in the “read temperature registers” will be the default value of 0 C. V
correctly and normal temperatures will be read.
= 3.3 V; T
DD
DD
(falling edge) voltage below which the logic is reset.
(rising edge) voltage below which the ADC is disabled.
C
C
l i
PARAMETER
PARAMETER
amb
l i
l i
)
= 5 C to +120 C; unless otherwise noted.
)
)
3
1 Hz, extended measurement requires about 400 ms more for conversion.
2
DD
T
T
T
T
T
T
T
T
V
V
Conversion data = 02h
Conversion data = 05h
SMBus inactive
Basic measurement
Extended measurement
Percentage error in programmed rate > 1 Hz
HIGH level
LOW level
Momentary as the address is being read
operation. The listed accuracy limits for 5 V
amb
amb
remote
remote
remote
remote
remote
remote
DD
DD
input disables A/D conversion
input falling edge
= +60 C to +100 C
= 0 C to +120 C
= +60 C to +100 C
= 0 C to +120 C
= +70 C to +100 C
= 0 C to +120 C
= +70 C to +100 C
= 0 C to +120 C
DD
5
CONDITIONS
CONDITIONS
below which the internal A/D converter is disabled. This is designed to be a
2 k .
5
DD
4
will rise to the value of UVL, at which point the A/D will function
7,8
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
DD
DD
DD
DD
DD
DD
DD
DD
DD
DD
DD
DD
DD
DD
DD
DD
DD
6
= 3.3 V
= 5.0 V
= 3.3 V
= 5.0 V
= 3.3 V
= 5.0 V
= 3.3 V
= 5.0 V
= 3.3 V
= 5.0 V
= 3.3 V
= 5.0 V
= 3.3 V
= 5.0 V
= 3.3 V
= 5.0 V
operation are guaranteed by design and 100% QA
1
1
1
1
1
1
1
1
1
1.0
–30
MIN.
DD
2.1
80
100
3
100
10
50
LIMITS
), the reading that is stored
0.75
1.25
2.0
2.5
TYP.
2.95
2.5
160
270
10
150
750
+30
MAX.
1.5
2.0
3.0
3.5
3.0
3.5
5.0
5.5
1.0
1.5
3.0
3.5
0.25
0.75
0.50
1.0
NE1618
Product data
V
V
ms
ms
%
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
UNIT
UNIT
A
A
A
A
A
A