HCLA Series
Miniature amplified low pressure sensors
1/15E / 1 1629 / F
www.first-sensor.com
FEATURES
· 0 ... 2.5 to 0 ... 75 mbar , 0 ... ±2.5 to
0 ... ±75 mbar , differential or gage
· Output: 0.25...4.25 V and I2C-bus
(SPI and switching outputs optional)
· Precision ASIC conditioning
· Calibrated and temperature
compensated
· Matched pressure port volumes
· Miniature SMT and SIL housings
· RoHS compliant
ELECTRICAL CONNECTION
+Vs
Vou
t
SC
L
SD
A
GND
1
3
5
8
2
SPECIFICATIONS
Maximum ratings
Supply voltage VS4.5 V ... 5.5 VDC
(optional 2.7 ... 3.3 VDC)
Output current
Sink 1 mA
Source 1 mA
Lead specifications
Average preheating temperature gradient 2.5 K/s
Soak time ca. 3 min
Time above 217°C 50 s
Time above 230°C 40 s
Time above 250°C 15 s
Peak temperature 260°C
Cooling temperature gradient -3.5 K/s
T emperature ranges
Compensated -25 ... 85°C
Operating -25 ... 85°C
Storage -40 ... 125°C
Humidity limits (non-condensing) 0 ... 95 %RH
Note: Pins 5 and 8 (connections for digital
I2C-bus) are only available for SMD
package styles (H, E and Q housings)
HCLA Series
Miniature amplified low pressure sensors
2/15E / 1 1629 / F
www.first-sensor.com
PRESSURE SENSOR CHARACTERISTICS
(Vs = 5.0 V, T A = 25 °C, analog output signal is ratiometric to VS, digital output signal is not ratiometric to VS,
pressure applied to high pressure port)
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7,5
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7,6
l
angistuptuO
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B...5200ALCHrabm52±...0rabm005rabm057
B...0500ALCHrabm05±...0rabm057rabm0021
B...5700ALCHrabm57±...0rabm0021rabm0002
U...5X20ALCHrabm5.2...0rabm052rabm005
V52.4-52.0
U...5X21ALCHrabm5.21...0rabm052rabm005
U...5200ALCHrabm52...0rabm005rabm057
U...0500ALCHrabm05...0rabm057rabm0021
U...5700ALCHrabm57...0rabm0021rabm0002
Specification notes:
1. Shift is relative to 25°C.
2. Shift is within the first hour of excitation applied to the device.
3. Non-linearity refers to the Best Straight Line fit, measured for lowest specified pressure, highest specified pressure and
1/2 full scale pressure.
4. Full Scale Span (FSS) is the algebraic difference between the output signal for the highest and lowest specified pressure.
5. Proof pressure is the maximum pressure which may be applied without causing durable shifts of the electrical parameters
of the sensing element.
6. Burst pressure is the maximum pressure which may be applied without causing damage to the sensing element or leaks to
the housing.
7. The common mode pressure for the HCLA series is 2 bar. Common mode pressure is the maximum pressure that can be
applied to both ports of a differential pressure sensor simultaneously without damaging the sensor housing.
8. Max. delay time between pressure change at the pressure die and signal change at the output.
9. The response time depends on the adjusted internal A/D resolution of the sensor. For 12 bit it is typ. 0.5 ms. Other A/D
resolutions and reponse times are available on request. Please contact First Sensor for further information.
10. Sensors with lower current consumption are available on request. Please contact First Sensor for further information.
HCLA Series
Miniature amplified low pressure sensors
3/15E / 1 1629 / F
www.first-sensor.com
PERFORMANCE CHARACTERISTICS
(Vs = 5.0 V, T A = 25 °C, analog output signal is ratiometric to VS, digital output signal is not ratiometric to VS,
pressure applied to high pressure port)
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)SSF(napselacslluF
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09.300.401.4
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4
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HCLA Series
Miniature amplified low pressure sensors
4/15E / 1 1629 / F
www.first-sensor.com
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HCLA12X5...B
scitsiretcarahC.niM.pyT.xaMtinU
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SCITSIRETCARAHCECNAMROFREPLATIGID
tesffoerusserporeZA073999382C3
xeHtnuoC
)SSF(napselacslluF
4
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rabm5.21-ta6660 SCITSIRETCARAHCECNAMROFREPEUGOLANA
tesffoerusserporeZ51.252.253.2
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)SSF(napselacslluF
4
09.300.401.4
tuptuOrabm5.21+ta52.4
rabm5.21-ta52.0
HCLA12X5...
HCLA12X5...U
scitsiretcarahC.niM.pyT.xaMtinU
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SCITSIRETCARAHCECNAMROFREPLATIGID
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)SSF(napselacslluF
4
09.300.401.4
tuptuoelacslluF 52.4
PERFORMANCE CHARACTERISTICS (cont.)
(Vs = 5.0 V, T A = 25 °C, analog output signal is ratiometric to VS, digital output signal is not ratiometric to VS,
pressure applied to high pressure port)
HCLA Series
Miniature amplified low pressure sensors
5/15E / 1 1629 / F
www.first-sensor.com
scitsiretcarahC.niM.pyT.xaMtinU
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50.0±52.0± SSF%)C°58ot52-(stceffelamrehT
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tesffO5.0±
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HCLA0025...B
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rabm52-ta52.0
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HCLA0025...U
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)SSF(napselacslluF
4
09.300.401.4
tuptuoelacslluF 52.4
PERFORMANCE CHARACTERISTICS (cont.)
(Vs = 5.0 V, T A = 25 °C, analog output signal is ratiometric to VS, digital output signal is not ratiometric to VS,
pressure applied to high pressure port)
HCLA Series
Miniature amplified low pressure sensors
6/15E / 1 1629 / F
www.first-sensor.com
scitsiretcarahC.niM.pyT.xaMtinU
)LSB(siseretsyhdnaytiraenil-noN
3
50.0±52.0± SSF%)C°58ot52-(stceffelamrehT
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HCLA0050...B
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HCLA0050...U
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)SSF(napselacslluF
4
09.300.401.4
tuptuoelacslluF 52.4
PERFORMANCE CHARACTERISTICS (cont.)
(Vs = 5.0 V, T A = 25 °C, analog output signal is ratiometric to VS, digital output signal is not ratiometric to VS,
pressure applied to high pressure port)
HCLA Series
Miniature amplified low pressure sensors
7/15E / 1 1629 / F
www.first-sensor.com
scitsiretcarahC.niM.pyT.xaMtinU
)LSB(siseretsyhdnaytiraenil-noN
3
50.0±52.0± SSF%)C°58ot52-(stceffelamrehT
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napS0.1±
yaledesnopseR
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HCLA0075...B
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HCLA0075...
HCLA0075...U
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4
09.300.401.4
tuptuoelacslluF 52.4
PERFORMANCE CHARACTERISTICS (cont.)
(Vs = 5.0 V, T A = 25 °C, analog output signal is ratiometric to VS, digital output signal is not ratiometric to VS,
pressure applied to high pressure port)
HCLA Series
Miniature amplified low pressure sensors
8/15E / 1 1629 / F
www.first-sensor.com
I²C BUS
Introduction
The HCLA is capable to generate a digital output signal.
The device runs a cyclic program, which will store a corrected
pressure value with 12 bit resolution about every 250 µs
within the output registers of the internal ASIC. In order to
use the sensor for digital signal readout, it should be
connected to a bidirectional I²C-bus.
According to the I²C-bus specification, the bus is controlled
by a master device, which generates the clock signal,
controls the bus access and generates START and STOP
conditions. The HCLA is designed to work as a slave, hence
it will only respond to requests from a master device.
Digital I²C interface
The HCLA complies with the following protocol (Fig. 1):
Bus not busy: During idle periods both data line (SDA) and
clock line (SCL) remain HIGH.
START condition (S): HIGH to LOW transition of SDA line
while clock (SCL) is HIGH is interpreted as START con-
dition. START conditions are always generated by the
master. Each initial request for a pressure value has to
begin with a START condition.
STOP condition (P): LOW to HIGH transition of SDA line while
clock (SCL) is HIGH determines STOP condition. STOP
conditions are always generated by the master . More than
one request for the current pressure value can be trans-
mitted without generation of intermediate STOP condition.
DA T A valid (D): S tate of data line represents valid data when,
after START condition, data line is stable for duration of
HIGH period of clock signal. Data on line must be
changed during LOW period of clock signal. There is
one clock pulse per bit of data.
Acknowledge (A): Data is transferred in pieces of 8 bits
(1 byte) on serial bus, MSB first. After each byte receiving
device – whether master or slave – is obliged to pull
data line LOW as acknowledge for reception of data.
Master must generate an extra clock pulse for this pur-
pose. When acknowledge is missed, slave transmitter
becomes inactive. It is on master either to send last com-
mand again or to generate STOP condition in that case.
Slave address: The I²C-bus master-slave concept requires
a unique address for each device. The HCLA has a
preconfigured slave address (1111000xb). By factory
programming it is possible to define a secondary slave
address additional to the general one. According to I²C
specification 127 different addresses are available. The
sensor will then listen to both slave addresses. After
generating a START condition the master sends the
address byte containing a 7 bit address followed by a
data direction bit (R/W). A "0" indicates a transmission
from master to slave (WRITE), a "1" indicates a data
request (READ).
DATA operation: The sensor starts to send 2 data bytes
containing the current pressure value as a 15 bit
information placed in the output registers.
SDA
SCL
START
condition Data
valid Data allowed
to change STOP
condition
R/W
Read out of first pres sure value Read out of n pressure values (optional)
SD ata B yte 1 AD ata B yte 2
Slave Address A
1A P
D ata B yte 1
generated by master
generated by slave
S = START condition
A = Acknowledge
P = ST O P condition
Da ta Byte 1 = H ig h B y te (MS B firs t)
Da ta Byte 2 = Lo w Byte (L SB la s t)
Fig. 1: I²C bus protocol
HCLA Series
Miniature amplified low pressure sensors
9/15E / 1 1629 / F
www.first-sensor.com
retemaraPlobmyS.niM.pyT.xaMtinU
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ATS.US
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3.0
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t
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t
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t
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t
SU;STA
t
R
t
F
SCL
SDA
t
HIGH
t
LOW
t
SU;STO
t
BUF
t
HD;STA
SDA
SCL
No te : First Sensor recommends communication speeds of at least 100 kHz (max. 400 kHz).
Please contact us for further information.
* recommended
Fig. 2: Timing characteristics
I²C Interface Parameters
HCLA Series
Miniature amplified low pressure sensors
10/15E / 1 1629 / F
www.first-sensor.com
PHYSICAL DIMENSIONS AND ELECTRICAL CONNECTIONS
HCLA...D...
SIL dual port, same side
dimensions in mm
HCLA...E...
SMD dual port, same side
niP
n
oitcennoC
1sV+
2DNG
3tuoV
4*C/I
5LCS
6*C/I
7
8ADS
dimensions in mm
first angle projection
first angle projection
* Internal connection.
Do not connect
for any reason
niP
n
oitcennoC
1sV+
2DNG
3tuoV
4*C/I
* Internal connection.
Do not connect
for any reason
0.46 2.54
7.62
16.00
12.70
17.00
2.54
10.30
1.00
2.65
6.50
0.70
4.20
3.80
Ø 2.00
15.90
7.70
14.90
11.90
0.25
3.00
4.70
Ø 3.00
1.57
26.30
2.70
Label
1 2
3
4
Low pressure
port
High pressure
port
16.00
2.65
1.00
12.70
6.50
2.54
2.54
7.62
3.00
4.70
Ø 3.00
4.06
16.70
6.90
15.32
2.06
6.76
0.46
0.70 3.80
4.20
4.76
7.70
Ø 2.00
15.90
8.26
14.90
11.90
Label
8
7
6
5
1
2
3 4
Low pressure
port
High pressure
port
HCLA Series
Miniature amplified low pressure sensors
11/15E / 1 1629 / F
www.first-sensor.com
PHYSICAL DIMENSIONS AND ELECTRICAL CONNECTIONS (cont.)
HCLA...H...
SMD single port
HCLA...G...
SIL single port
dimensions in mm
niP
n
oitcennoC
1sV+
2DNG
3tuoV
4*C/I
5LCS
6*C/I
7
8ADS
dimensions in mm
first angle projection
first angle projection
* Internal connection.
Do not connect
for any reason
niP
n
oitcennoC
1sV+
2DNG
3tuoV
4*C/I
* Internal connection.
Do not connect
for any reason
16.00
1.00
12.70
6.50
2.65
2.54
7.62
2.54
16.70
Ø 3.00
4.06
15.32
6.76
4.27
2.00
0.46
Ø 2.00
8.26
15.90
0.70
3.80
4.20
14.90
11.90
3.65
Label
8
7
6
5
1
2
3
4
High pressure
port
16.00
12.70
10.30
17.00
0.46 2.54
7.62
2.54
1.00
2.65
6.50
26.30
Ø 3.00
1.57
0.25
4.27
2.00
4.68
Ø 2.00
3.10
0.70
2.70
15.90
14.90
11.90
3.65
Label
1 2
3
4
High press ure
port
HCLA Series
Miniature amplified low pressure sensors
12/15E / 1 1629 / F
www.first-sensor.com
SMD dual port, opposite side (HCLA...Q...)
SIL dual port, opposite side (HCLA...P...)
HOUSING OPTIONS
Different housing options are available on request. Please contact First Sensor.
dimensions in mm
niP
n
oitcennoC
1sV+
2DNG
3tuoV
4*C/I
5LCS
6*C/I
7
8ADS
dimensions in mm
first angle projection
first angle projection
* Internal connection.
Do not connect
for any reason
niP
n
oitcennoC
1sV+
2DNG
3tuoV
4*C/I
* Internal connection.
Do not connect
for any reason
2.54
2.54
7.62
2.65
1.00
6.50
12.70
16.00
6.90
16.70
15.32
6.76 4.06
8.26
Ø 2.00
0.70
4.70
7.70
0.46
2.06
19.10
14.90
11.90
3.50
Label
8
7
6
5
1
2
3
4
Lo w pr es su re
port H igh pressure
port
16.00
2.65
1.00
12.70
17.00
10.30
2.54
2.54
7.62
0.46
6.50
Ø 3.00
1.57
0.25
26.30
4.20
Ø 2.00
0.70
3.80
19.10
4.70
7.70
14.90
11.90
Label
1 2
3
4
Low pressure
port High pr ess ure
port
HCLA Series
Miniature amplified low pressure sensors
13/15E / 1 1629 / F
www.first-sensor.com
SIL dual port, top side (HCLA...T...)
HOUSING OPTIONS (cont.)
Different housing options are available on request. Please contact First Sensor.
dimensions in mm
first angle projection
* Internal connection.
Do not connect
for any reason
niP
n
oitcennoC
1sV+
2DNG
3tuoV
4*C/I
2.65
1.00
12.70
16.00
10.30
17.00
18.55
4.85
2.54
2.54
7.62
0.46
Ø 2.00
7.70
27.85
4.20
3.80
0.25
1.57
14.90
11.90
3.00
Ø 3.00
4.70
0.70
Label
1 2
3
4
Low pressure
port
High pressure
port
HCLA Series
Miniature amplified low pressure sensors
14/15E / 1 1629 / F
www.first-sensor.com
Dual Inline Packages (DIP)
(Available for all housing styles. Sample package shown: DIP dual port, same side)
Barbed pressure ports
(Available for all housing styles. Sample package shown: SMD dual port, same side)
dimensions in mm
dimensions in mm
HOUSING OPTIONS (cont.)
Different housing options are available on request. Please contact First Sensor.
first angle projection
first angle projection
16.00
12.70
2.65
1.00 6.00
5.50
2.54
2.54
7.62
5.14
10.14
16.70
5.00
12.72
5.00
6.90
7.29
0.70
Ø 2.20
Ø 3.00
2.50
8.00
11.64
17.70
4.35 7.99
0.46
16.70
3.80
Label
8
7
6
5
1
2
3 4
Low pressure
port
High pressure
port
12.7
16.00
2.65
1.00
6.50
2.54
2.54
7.62
16.70
3.00
6.90
4.70
Ø 3.00
0.25
9.28
Ø 2.00
0.70
3.59
8.29
4.20
6.29 7.70
0.46
15.90
14.90
11.90
3.80
13.48
Label
8
7
6
5
1
2
3 4
Low pressure
port
High pressure
port
HCLA Series
Miniature amplified low pressure sensors
15/15E / 1 1629 / F
www.first-sensor.com
ORDERING INFORMATION
Custom specific pressure ranges and mechanical or electronic sensor modifications
are widely available:
· up to 15 bit resolution
· 3 V power supply
· SPI, switching and custom specific outputs
· barbed pressure ports
· Dual Inline Packages (DIP)
... etc.
Please contact First Sensor for further information.
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First Sensor reserves the right to make changes to any products herein. First Sensor does not assume any liability arising out of the application
or use of any product or circuit described herein, neither does it convey any license under its patent rights nor the rights of others.
