RECOMMENDED OPERATING CONDITIONS
(
Ta = 25°C, VDD = 3.0 V unless noted otherwise)
Parameter
Symbol
p
Conditions
Min.
Typ.
Max
1100
3.6
Unit
mbar
abs.
Operating pressure range
Supply voltage
10
VDD
2.2
3.0
V
Supply current,
VDD = 3.0 V
average (1)
Iavg
Isc
Iss
4
1
µA
mA
µA
during conversion (2)
standby (no conversion)
Current consumption into
MCLK (3)
Operating temperature
range
0.1
0.5
MCLK = 32.768 kHz
MCLK = 32.768 kHz
µA
T
-40
+25
+85
35
°C
Conversion time
tconv
ms
kHz
%
External clock signal (4)
Duty cycle of MCLK
Serial data clock
MCLK
30.000 32.768 35.000
40/60
50/50
60/40
500
SCLK
kHz
NOTES
1) Under the assumption of one conversion every second. Conversion means either a pressure or a
temperature measurement started by a command to the serial interface of MS5540B.
2) During conversion the sensor will be switched on and off in order to reduce power consumption; the total on
time within a conversion is about 2 ms.
3) This value can be reduced by switching off MCLK while MS5540B is in standby mode.
4) It is strongly recommended that a crystal oscillator be used because the device is sensitive to clock jitter. A
square-wave form of the clock signal is a must.
DA5540B_007
September 25th, 2006
3
00005540767 ECN 865
INTERSEMA [ INTERSEMA SENSORIC SA ]
