IC-HO Datasheet, PDF (2/2 Pages) IC-Haus GmbH – GENERAL PURPOSE SENSOR INTERFACE

iC-HO
GENERAL PURPOSE SENSOR INTERFACE
Applications
FLOW
SENSOR
Rup Rdown
Rb
Rh
VDDAS
SUS3
SUS2
SUS1
GNDAS
Configurable Sensor
Supply
PGA Input
SPIN
+
A
SNIN
-
D
RBP
RBN
HEATP
HEATN
IHEAT
GNDHS
iC-HO
Heater Control
A
D
PI
A
D
D
A
GAS
SENSOR
Rs
Rb
Rh
VDDAS
SUS3
SUS2
SUS1
GNDAS
Configurable Sensor
Supply
PGA Input
SPIN
+
A
SNIN
-
D
RBP
RBN
HEATP
HEATN
IHEAT
GNDHS
iC-HO
Heater Control
A
D
PI
A
D
D
A
PRESSURE
SENSOR
Rb
VDDAS
SUS3
SUS2
SUS1
GNDAS
VDDA
Configurable Sensor
Supply
PGA Input
SPIN
+
A
SNIN
-
D
RBP
RBN
HEATP
HEATN
IHEAT
GNDHS
iC-HO
Heater Control
A
D
PI
A
D
D
A
Pin Functions
Key Specifications
No. Name
1
VDDAS
2
IHEAT
3
SPIN
4
SNIN
5
GNDAS
6
GNDHS
7
HEATN
8
HEATP
9
RBN
10 n.c.
11 RBP
12 n.c.
13 VDD
14 GND
15 NCS_M
16 SCK_M
17 MOSI_M
18 MISO_M
19 NCS_S
20 SCK_S
21 MOSI_S
22 MISO_S
23 NERR
24 OUTP
25 OUTN
26 GNDA
27 VDDA
28 VAMP
29 VREF
30 SUS3
31 SUS2
32 SUS1
TP
Function
Switched Sensor Supply Output
Heater DAC Output Current
Positive Sensor Input
Negative Sensor Input
Switched Sensor Ground
Switched Heater Ground
Heater R ADC Negative Port
Heater R ADC Positive Port
Bulk R ADC Negative Port
not connected
Bulk R ADC Positive Port
not connected
+5 V Digital Supply Voltage
Digital Ground
SPI Master (EEPROM), chip select
SPI Master (EEPROM), clock line
SPI Master (EEPROM), data output
SPI Master (EEPROM), data input
SPI Slave, chip select
SPI Slave, clock line
SPI Slave, data input
SPI Slave, data output
Error Message Output (low active)
Positive Analog Output
Negative Analog Output
Analog Ground
+5 V Analog Supply Voltage
ADC Voltage Range Reference I/O
ADC Center Voltage Reference I/O
Sensor Bias Output 3
Sensor Bias Output 2
Sensor Bias Output 1
Thermal Pad
General
Supply Voltage
+5 V +/- 10 %
Operating Temperature Range -25 °C to 105 °C
Heater Driver
Heater Driver Current
up to 35 mA
Heater Voltage
up to 3300 mV max.
PI Control Sampling Frequency 10 kHz
Resistor Temp. Coefficient
1953 … 3902 ppm/°K
Differential Analog Output
Differential Output Voltage
DAC Resolution
+/- 80 % of VDDA
10 bit
Linearization Look-Up Table
Number of Breakpoints
Breakpoint Resolution
Correction Value
9
8 bit (address)
11 bit
SPI Interfaces
SPI Slave
SPI Master
to master MCU (host)
to slave EEPROM
Pin Configuration QFN28 5x5 mm²
32 31 30 29 28 27 26 25
1
24
2
23
3
22
4
21
5
20
6
19
7
18
8
17
9 10 11 12 13 14 15 16
This preliminary information is not tantamount to a guarantee of device characteristics. All rights to technical changes reserved.
Am Kuemmerling 18 • D-55294 Bodenheim, Germany
Tel. [phone] • Fax [phone] • http://www.ichaus.com
Rev. 1.0