SA56004X Datasheet, PDF (5/23 Pages) NXP Semiconductors – 1 Degrees Celcious accurate, SMBus-compatible, 8-pin, remote/local digital temperature sensor with over temperature alarms

Philips Semiconductors
±1 °C accurate, SMBus-compatible, 8-pin, remote/local
digital temperature sensor with over temperature alarms
Product data sheet
SA56004X
ELECTRICAL CHARACTERISTICS
T_amb = 0 °C to +125 °C, V_DD = 3.0 V to 3.6 V, unless otherwise specified.
SYMBOL
PARAMETER
CONDITIONS
MIN. TYP. MAX. UNIT
T_ERRL
T_ERRR
T_RESR
Local temperature error
Remote temperature error
Remote temperature resolution
T_amb = 60 °C to +100 °C
–2
±1
+2
°C
T_amb = 0 °C to +125 °C
–3
–
+3
°C
T_amb = +25 °C to +85 °C; T_RD = +60 °C to +100 °C
–1
–
+1
°C
T_amb = 0 °C to +85 °C; T_RD = 0 °C to +125 °C
–3
–
+3
°C
–
11
–
bits
–
0.125
–
°C
T_RESL
Local temperature resolution
–
11
–
bits
–
0.125
–
°C
t_CONV
V_DD
I_DD
Conversion time
Supply voltage¹
Quiescent current
Shutdown current
During conversion, 16 Hz conversion rate
SMBus inactive
–
38
–
ms
3.0
–
5.5
V
–
500
–
µA
–
10
–
µA
I_RD
Remote diode source current
UVL
Undervoltage lockout (UVL)
threshold voltage²
High setting: D+ – D– = +0.65 V
Low setting
V_DD input disables A/D conversion³
–
160
–
µA
–
10
–
µA
2.6
–
2.95
V
Power-on-Reset (POR) threshold
voltage
V_DD, input falling edge⁴
1.8
–
2.4
V
Local and Remote ALERT HIGH
default temperature settings
Default values set at power-up
–
+70
–
°C
Local and Remote ALERT LOW
default temperature settings
Default values set at power-up
–
0
–
°C
Local and Remote T_CRIT
default temperature settings
Default values set at power-up
–
+85
–
°C
Hystersis (T_CRIT)
Default value set at power-up
–
+10
–
°C
ALERT and T_CRIT output
saturation voltage
I_OUT = 6.0 mA
–
–
0.4
V
NOTES:
1. The SA56004X is optimized for 3.3 V_DD operation.
2. Definition of Under Voltage Lockout (UVL): The value of V_DD 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 V_DD), the reading that is stored
in the “read temperature registers” will be the default value of 0 °C. V_DD will rise to the value of the UVL, at which point the A/D will function
correctly and the normal temperature will be read.
3. V_DD (rising edge) voltage below which the A/D converter is disabled.
4. V_DD (falling edge) voltage below which the logic is reset.
2004 Oct 06
5