RECOMMENDED OPERATING CONDITIONS
(
Ta
= 25° VDD = 3.0 V unless noted otherwise)
C,
Parameter
Operating pressure range
Supply voltage
Supply current,
average (1)
during conversion (2)
standby (no conversion)
Current consumption into
MCLK (3)
Operating temperature
range
Conversion time
External clock signal (4)
Duty cycle of MCLK
Serial data clock
Symbol
p
VDD
I
avg
I
sc
I
ss
Conditions
Min.
10
2.2
Typ.
Max
1100
Unit
mbar
abs.
V
µA
mA
µA
µA
°
C
ms
kHz
%
kHz
3.0
4
1
3.6
VDD = 3.0 V
0.1
0.5
MCLK = 32.768 kHz
T
t
conv
MCLK
SCLK
MCLK = 32.768 kHz
30.000
40/60
32.768
50/50
-40
+25
+85
35
35.000
60/40
500
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
00005540767 ECN 865
September 25th, 2006
3
INTERSEMA [ INTERSEMA SENSORIC SA ]
