HCA0611ARH9 [SENSORTECHNICS]
Miniature amplified barometric pressure sensors; 微型放大气压传感器
| 型号： | HCA0611ARH9 |
| 厂家： | 
SENSORTECHNICS GMBH |
| 描述： | Miniature amplified barometric pressure sensors |
| 文件： | 总6页 (文件大小：85K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
HCA-BARO Series
Miniature amplified barometric pressure sensors
FEATURES
· 600...1100 mbar, 800...1100 mbar
barometric ranges
· Output: 0.25...4.25 V and I2C-bus
(SPI and switching outputs optional)
· Precision ASIC conditioning
· Calibrated and temperature
compensated
· Miniature SMT or SIL housing
· RoHS compliant
· Sensortechnics PRO services
SPECIFICATIONS
ELECTRICAL CONNECTION
Maximum ratings
Supply voltage VS
4.5 V ... 5.5 VDC
(optional 2.7 ... 3.3 VDC)
Output current
Sink
+Vs
1 mA
1 mA
1
Source
3
Proof pressure3
Burst pressure4
Lead specifications
3000 mbara
5000 mbara
Vout
5
SCL
8
SDA
2
Average preheating temperature gradient 2.5 K/s
Soak time
ca. 3 min
50 s
40 s
15 s
260°C
-3.5 K/s
GND
Time above 217°C
Time above 230°C
Time above 250°C
Peak temperature
Cooling temperature gradient
Note: Pins 5 and 8 (connections for digital
I2C-bus) are only available for SMD
package (HCA...H)
Temperature ranges
Compensated
Operating
0 ... +85°C
-25 ... +85°C
-40 ... +125°C
Storage
Humidity limits (non-condensing)
0 ... 95 %RH
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HCA-BARO Series
Miniature amplified barometric pressure sensors
PERFORMANCE CHARACTERISTICS
(Vs = 5.0 V, TA = 25 °C, analog output signal is ratiometric to VS, digital output signal is not ratiometric to VS,
pressure applied to high pressure port)
Characteristics
Min.
600
800
Typ.
Max.
1100
1100
±1.0
Unit
Operating pressure range
HCA0611AR...
HCA0811AR...
mbara
Total accuracy (0 ... 85 °C)1
Response delay5, 6
%FSS
ms
2
A/D resolution6
15
bit
D/A resolution
11
Current consumption (no load)7
5
mA
DIGITAL PERFORMANCE CHARACTERISTICS
Output at min. pressure
Full scale span (FSS)2
0666
Count Hex
6666
ANALOGUE PERFORMANCE CHARACTERISTICS
Output at min. pressure
Full scale span (FSS)2
0.25
4.00
V
Specification notes:
1. Total accuracy is the combined error from offset and span calibration, linearity, pressure hysteresis, and temperature
effects. Linearity is the measured deviation based on a straight line. Hysteresis is the maximum output difference at
any point within the operating pressure range for increasing and decreasing pressure. Calibration errors include the
deviation of offset and full scale from nominal values.
2. Full Scale Span (FSS) is the algebraic difference between the output signal for the highest and lowest specified
pressure.
3. Proof pressure is the maximum pressure which may be applied without causing durable shifts of the electrical parameters
of the sensing element.
4. Burst pressure is the maximum pressure which may be applied without causing damage to the sensing element or leaks to
the housing.
5. Max. delay time between pressure change at the pressure die and signal change at the output.
6. The response time depends on the adjusted internal A/D resolution of the sensor. For 15 bit it is typ. 2 ms. Other A/D
resolutions and reponse times are available on request. Please contact Sensortechnics for further information.
7. Sensors with lower current consumption are available on request. Please contact Sensortechnics for further information.
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HCA-BARO Series
Miniature amplified barometric pressure sensors
I²C BUS
DATA valid (D): State of data line represents valid data when,
Introduction
after START condition, data line is stable for duration of
The HCA-BARO is capable to generate a digital output
signal. The device runs a cyclic program, which will store a
corrected pressure value with 15 bit resolution about every
1 ms 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.
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.
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 HCA-BARO is designed to work as a slave,
hence it will only respond to requests from a master device.
Digital I²C interface
Slave address: The I²C-bus master-slave concept requires
a unique address for each device. The HCA-BARO 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).
The HCA-BARO 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.
DATA operation: The HCA-BARO starts to send 2 data bytes
containing the current pressure value as a 15 bit
information placed in the output registers.
SCL
SDA
START
condition
Data
valid
Data allowed
to change
STOP
condition
1
S Slave Address R/W A Data Byte 1
Data Byte 2
A
Data Byte 1
P
A
Read out of first pressure value
Read out of n pressure values (optional)
S = START condition
A = Acknowledge
Data Byte 1 = High Byte (MSB first)
Data Byte 2 = Low Byte (LSB last)
generated by master
generated by slave
P = STOP condition
Fig. 1: I²C bus protocol
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HCA-BARO Series
Miniature amplified barometric pressure sensors
I²C Interface Parameters
Parameter
Symbol Min.
Typ.
Max.
100
10
Unit
Input high level
90
0
Input low level
% of Vs
Output low level
10
Ω
Pull-up resistor
500
CSDA
Load capacitance @ SDA
Input capacitance @ SDA/SCL
SCL clock frequency
400
10
pF
CI2C_IN
FSCL
tBUF
100*
1.3
0.8
1.3
0.6
1
400
kHz
Bus free time between STOP and START condition
Hold time (repeated) START condition, to first clock pulse
LOW period of SCL
tHD.STA
tLOW
tHIGH
HIGH period of SCL
tSU.STA
tHD.DAT
tSU.DAT
tR
Setup time repeated START condition
Data hold time
µs
0
Data setup time
0.2
Rise time of both SDA and SCL
Fall time of both SDA and SCL
Setup time for STOP condition
0.3
0.3
tF
tSU.STO
0.6
* recommended
Note: Sensortechnics recommends communication speeds of at least 100 kHz (max. 400 kHz).
Please contact your nearest Sensortechnics sales office for further information.
tSU;DAT
tHD;DAT
tSU;STA
tHD;STA
tR
tF
SCL
SDA
tHIGH
tLOW
tSU;STO
tBUF
tHD;STA
SCL
SDA
Fig. 2: Timing characteristics
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HCA-BARO Series
Miniature amplified barometric pressure sensors
PHYSICAL DIMENSIONS AND ELECTRICAL CONNECTIONS
HCA...G8
Single port
3.70
3
Top view
12.70
1.90
2.5
Pin
1
Connection
+Vs
2
GND
3
Vout
4
I / C*
1 2 3 4
* Internal connection.
Do not connect for any reason
0.25
0.51
2.54
1.45
10.70
4.20
third angle projection
dimensions in mm
HIGH PRESSURE PORT
3
HCA...H8
SMD single port
Top view
12.70
2.5
Pin
1
Connection
+Vs
8 7 6 5
2
GND
3
Vout
4
I / C *
SCL
5
1 2 3 4
10.70
6
4.06
I / C *
SDA
7
8
2.54
* Internal connection.
Do not connect for any reason
HIGH PRESSURE PORT
0.46
third angle projection
dimensions in mm
3
4.20
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HCA-BARO Series
Miniature amplified barometric pressure sensors
ORDERING INFORMATION
Series
HCA
Pressure range
Pressure mode
Calibration
Housing
Porting
Options
0611 600...1100 mbar
0811 800...1100 mbar
A
Absolute
R
R
Barometric G* SIL
8
9
Straight
Barbed
H
SMD
* not available
with digital output
Example:
HCA
0611
A
H
8
Custom specific mechanical or electronic sensor modifications are widely available:
· 3 V power supply
· SPI, switching and custom specific outputs
· Dual inline packages (DIP)
... etc.
Please contact your nearest Sensortechnics sales office for further information.
Sensortechnics PRO services:
· Extended guarantee period of 2 years
· Custom product modifications and adaptations even for small quantities
· Advanced logistics models for supply inventory and short delivery times
· Technical support through application engineers on the phone or at your site
· Traceability of each sensor through serial numbers on request
· No product specification changes without customer notification
· No product obsolescence without very early prior notice
· Fastest possible technical response for design and QA engineers
· Long term product availability for your spares and service needs
... plus other services on request
Sensortechnics reserve the right to make changes to any products herein. Sensortechnics do 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.
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