PACKAGING AND SHIPPING (TRAY)
15.67mm15.67mm

DATA SHEETPACKAGING AND SHIPPING (TAPE AND REEL)

10.97mm10.97mm

4.0mm
4.0mm
2.0mm
2.0mm

14.69mm114.69mm1

TRVF Series
The TRVF Series is a fully compensated harsh-media, digital I2C and analog
output, pressure-sensor package. It is designed to handle today’s toughest
pressure-sensing environments with a temperaturerange of -40°C and 150°C.

11.5mm
11.5mm203.20mmmm
203.20mmmm

24.0mm24.0mm2
29.85mm29.85mm2

The unique pressure port isolates onboard electronics, the three wetted materials—silicon, glass, and ceramic—
enable the TRVF Series to withstand a variety of harsh media.

16mm
16mm

The TRVF design isolates the the FR-4 high TG substrate mechanical stress from the MEMs die avoiding possible offset
shifts caused during the manufacturing process.

304.80mm
304.80mm.254mm.254mmThe spring contacts make the customers’ assembly process easier and faster.
COMPANY: Merit Sensor is a leader in piezoresistive pressure sensing andpartners with clients to create high performing solutions for a variety of
applications and industries.

ELECTRICAL
Vs

A_Out
SDA

SCL (I2C)
ASIC

MEMS

SENTIUM: Merit Sensor products incorporate a proprietary Sentium®
technology developed to provide a best-in-class operating temperature
range and superior stability.
TECHNOLOGY: Merit Sensor utilizes a piezoresistive Wheatstone bridgein a design that anodically bonds glass to a chemically etched silicondiaphragm. All products are RoHS compliant.

GND

SDA (I2C)SCL
Vs

Vout (Analog)

CAPABILITIES: Merit Sensor designs, engineers, fabricates, dices,
assembles, tests, sells and services die and packaged products from astate-of-the-art facility near Salt Lake City, Utah

Note: Power supply decoupling and output filtering included
Gnd

TRVF Series Part Number Configurator

FEATURES
Pressure Range 1 to 300 psi / 0.07 to 20.7bar / 7 to 2067 kPa

DIMENSIONS FOR STANDARD OPTIONS (in millimeters):

Temperature
Range

Dimensions for reference only. Engineering drawings (with tolerance) available upon order10.32mm+0.15
2.31mm -0.05

2mm

3.02mm
12.85mm

1.75mm
3.26mm
1.61mmSMD Solder Pads Size: 2.1 X 1.0mm

Absolute or gage

Electrical
Connection

Spring Contacts

OutputDigital I2C and Analog Ratiometric 0.5V – 4.5V,

ElectricalProtection

output short circuit and supply high voltage /reverse polarity up to 40V

4.13mm

2.76mmSpring Contact Recommended Deflection:
0.65mm ±0.25mm (Normal Force @0.65mm = 0.67N)

Sales +1 801.208.4722 · Customer Service +1 801.208.4700 · Fax +1 801.208.4798 · sensors@merit.com · www.MeritSensor.com
1600 W. Merit Parkway · South Jordan, Utah · 84095 · USA

Packaging
0 = Tape and Reel
1 = TrayAccuracy
1 = 2.5% FS(standard)
2 = 1% FS (highaccuracy)

Pressure TypeA = Absolute
G = Gage
Pressure port
0 = Ceramic
ButtonElectrical Connection Type:0 = 5 spring contacts

APPLICATIONS

0.65mm

9.04mmPressure Type5.42mm

1.13mm
9.04mm-40°C to 150°C

TRVF-XXXXX-XXXX

Full Scale
Pressure*0015 = 15 psi
0100 = 100 psi
0300 = 300 psi

Industrial: Pneumatic systems, water levels, water pressure. It is also
used for air-conditioning and other refrigerant systems, portablemeasurement and analysis instrumentation, and industrial automation.

*Custom calibration available upon request

Automotive: Monitor the pressure of transmission fluid, fuel systems,
oil systems, exhaust gas, HVAC systems, Airbrake systems, etc.
Medical: Equipment for diagnosis and analysis.

Sales +1 801.208.4722 · Customer Service +1 801.208.4700 · Fax +1 801.208.4798 · sensors@merit.com · www.MeritSensor.com
1600 W. Merit Parkway · South Jordan, Utah · 84095 · USA

TRVFseriesDS.004

TRVF Series

I C TIMING DIAGRAM (FOR REFERENCE ONLY)
2

SPECIFICATIONSParameter

Minimum

TypicalMaximum

Units

4.5

5

5.5

V

Notes

Electrical
Supply Voltage (Vs)
Supply Current

mA

7

Supply Over Voltage Protection

40

Reverse polarity Protection-40

Output overvoltage protection-40

ESD Protection<= 4000

40@5.00V supply and 25°C

V

Device will cease operation during supply voltage
fault.

V

Device will cease operation during supply voltage
fault.

V

Device will cease operation during supply voltage
fault.

V

According to the Human Body Model

Performance
Output Range (Vout)

10

90

%Vs

Output Clipping

5

95

%Vs

Other custom limits available upon request

0.024

%FS

@12bits

2.5

%FS0

5

%FS0

1

%FS0

2

%FS0

0.8

%FS

Analog Resolution

SENSOR TRVF I2CTM COMMUNICATION

Standard Accuracy (2.5%)
Calibrated Temperature Range-15°C to 125°C-2.5

Extended Temperature Range -5
		 - 40°C to -15°C and 125°C to 150°C
High Accuracy (1.0%)
		 Calibrated Temperature Range-15°C to 125°C-1

Extended Temperature Range-2		 - 40°C to -15°C and 125°C to 150°C
Lifetime Drift-0.8
Static Proof Pressure

2.0x

FS

Burst Pressure

5.0x

FS

Accuracy includes all error for pressure andthermal hysteresis and linearity over the entire
operating temperature range. It does not include
lifetime drift.

@1000hrs / 150°C

The correct command to write to the unit for setting up the data read is “0x2E 0x21 0x00”. This write command interrupts thenormal operation of the ASIC and should only be used once to “activate” the register that holds the pressure data. Once theregister is activated, any subsequent read of the device will return the data from that register.

Environmental
Operating Temperature

-40

150

°C

Storage Temperature

-55

150

°C

Weight1.35

NOTE REGARDING I2C ADDRESSES:• Address 0x28 is the default• Other addresses (0x29, 0x2a, 0x2b available upon request,) will respond to both the given address, and 0x28g

Digital Interface (for reference only)
Vdd
0.2x

Vdd

SCL clock frequency

400

kHz

32768

countsI 2C™ bit countBus free time between start andstop condition
Hold time start condition
Setup time repeated start
condition
Low period SCL/SDA

0High period SCL/SDA
Data hold time
Data setup time

fSCL

1.3

us

tI2C_BF

0.6

us

tI2C_HD_STA

0.6

us

tI2C_SU_STA

1.3

us

tI2C_L

0.6

us

tI2C_H

0.1

us

0.1

tI2C_HD_DA

us

tI2C_SU_DATRise time SCL/SDA

0.3

us

tI2C_R

Fall time SCL/SDA

0.3

us

tI2C_Fus

tI2C_SU_STO

ns

tI2C_NI (spike suppression)

Setup time stop condition
Noise interception SDA/SCL

0.650

A read command will return the data from the output register. It will not interrupt the normal processing of the ASIC. Three bytes ofdata should be read… the first byte is the original command (0x2E), the next two bytes are the pressure output in counts.

TRANSFER FUNCTION FORMULAS
Analog
Ppsi = ( Pmax – Pmin•

Pcounts -0.1 • Max
0.8 • Max+ PminWhere
Ppsi= Measured Pressure
Vout – VinminPSI + P
PP
psi = ( Pmax – Pmin •minMax= Maximum Pressure
Vmax – Vmin
PMin = Minimum Pressure
Vmin= Minimum Volatage (Usually 0.5V)
Vmax = Maximum Volatage (Usually 4.5V)
Vout= Output voltage(

I2C™ voltage level LOW

(

0.8x

Ppsi = ( Pmax – Pmin(

I2C™ voltage level HIGH•

Vout – Vmin
Vmax – Vmin

+ PminWhere
Ppsi= Measured Pressure in PSI
Pcounts = Pressure Counts from Merit Sensor Part
PMin = Minimum Pressure
Pmax = Maximum Pressure
MAX = 32768 = 15 Bits

TRVF Series

I C TIMING DIAGRAM (FOR REFERENCE ONLY)
2

SPECIFICATIONSParameter

Minimum

TypicalMaximum

Units

4.5

5

5.5

V

Notes

Electrical
Supply Voltage (Vs)
Supply Current

mA

7

Supply Over Voltage Protection

40

Reverse polarity Protection-40

Output overvoltage protection-40

ESD Protection<= 4000

40@5.00V supply and 25°C

V

Device will cease operation during supply voltage
fault.

V

Device will cease operation during supply voltage
fault.

V

Device will cease operation during supply voltage
fault.

V

According to the Human Body Model

Performance
Output Range (Vout)

10

90

%Vs

Output Clipping

5

95

%Vs

Other custom limits available upon request

0.024

%FS

@12bits

2.5

%FS0

5

%FS0

1

%FS0

2

%FS0

0.8

%FS

Analog Resolution

SENSOR TRVF I2CTM COMMUNICATION

Standard Accuracy (2.5%)
Calibrated Temperature Range-15°C to 125°C-2.5

Extended Temperature Range -5
		 - 40°C to -15°C and 125°C to 150°C
High Accuracy (1.0%)
		 Calibrated Temperature Range-15°C to 125°C-1

Extended Temperature Range-2		 - 40°C to -15°C and 125°C to 150°C
Lifetime Drift-0.8
Static Proof Pressure

2.0x

FS

Burst Pressure

5.0x

FS

Accuracy includes all error for pressure andthermal hysteresis and linearity over the entire
operating temperature range. It does not include
lifetime drift.

@1000hrs / 150°C

The correct command to write to the unit for setting up the data read is “0x2E 0x21 0x00”. This write command interrupts thenormal operation of the ASIC and should only be used once to “activate” the register that holds the pressure data. Once theregister is activated, any subsequent read of the device will return the data from that register.

Environmental
Operating Temperature

-40

150

°C

Storage Temperature

-55

150

°C

Weight1.35

NOTE REGARDING I2C ADDRESSES:• Address 0x28 is the default• Other addresses (0x29, 0x2a, 0x2b available upon request,) will respond to both the given address, and 0x28g

Digital Interface (for reference only)
Vdd
0.2x

Vdd

SCL clock frequency

400

kHz

32768

countsI 2C™ bit countBus free time between start andstop condition
Hold time start condition
Setup time repeated start
condition
Low period SCL/SDA

0High period SCL/SDA
Data hold time
Data setup time

fSCL

1.3

us

tI2C_BF

0.6

us

tI2C_HD_STA

0.6

us

tI2C_SU_STA

1.3

us

tI2C_L

0.6

us

tI2C_H

0.1

us

0.1

tI2C_HD_DA

us

tI2C_SU_DATRise time SCL/SDA

0.3

us

tI2C_R

Fall time SCL/SDA

0.3

us

tI2C_Fus

tI2C_SU_STO

ns

tI2C_NI (spike suppression)

Setup time stop condition
Noise interception SDA/SCL

0.650

A read command will return the data from the output register. It will not interrupt the normal processing of the ASIC. Three bytes ofdata should be read… the first byte is the original command (0x2E), the next two bytes are the pressure output in counts.

TRANSFER FUNCTION FORMULAS
Analog
Ppsi = ( Pmax – Pmin•

Pcounts -0.1 • Max
0.8 • Max+ PminWhere
Ppsi= Measured Pressure
Vout – VinminPSI + P
PP
psi = ( Pmax – Pmin •minMax= Maximum Pressure
Vmax – Vmin
PMin = Minimum Pressure
Vmin= Minimum Volatage (Usually 0.5V)
Vmax = Maximum Volatage (Usually 4.5V)
Vout= Output voltage(

I2C™ voltage level LOW

(

0.8x

Ppsi = ( Pmax – Pmin(

I2C™ voltage level HIGH•

Vout – Vmin
Vmax – Vmin

+ PminWhere
Ppsi= Measured Pressure in PSI
Pcounts = Pressure Counts from Merit Sensor Part
PMin = Minimum Pressure
Pmax = Maximum Pressure
MAX = 32768 = 15 Bits

PACKAGING AND SHIPPING (TRAY)
15.67mm15.67mm

DATA SHEETPACKAGING AND SHIPPING (TAPE AND REEL)

10.97mm10.97mm

4.0mm
4.0mm
2.0mm
2.0mm

14.69mm114.69mm1

TRVF Series
The TRVF Series is a fully compensated harsh-media, digital I2C and analog
output, pressure-sensor package. It is designed to handle today’s toughest
pressure-sensing environments with a temperaturerange of -40°C and 150°C.

11.5mm
11.5mm203.20mmmm
203.20mmmm

24.0mm24.0mm2
29.85mm29.85mm2

The unique pressure port isolates onboard electronics, the three wetted materials—silicon, glass, and ceramic—
enable the TRVF Series to withstand a variety of harsh media.

16mm
16mm

The TRVF design isolates the the FR-4 high TG substrate mechanical stress from the MEMs die avoiding possible offset
shifts caused during the manufacturing process.

304.80mm
304.80mm.254mm.254mmThe spring contacts make the customers’ assembly process easier and faster.
COMPANY: Merit Sensor is a leader in piezoresistive pressure sensing andpartners with clients to create high performing solutions for a variety of
applications and industries.

ELECTRICAL
Vs

A_Out
SDA

SCL (I2C)
ASIC

MEMS

SENTIUM: Merit Sensor products incorporate a proprietary Sentium®
technology developed to provide a best-in-class operating temperature
range and superior stability.
TECHNOLOGY: Merit Sensor utilizes a piezoresistive Wheatstone bridgein a design that anodically bonds glass to a chemically etched silicondiaphragm. All products are RoHS compliant.

GND

SDA (I2C)SCL
Vs

Vout (Analog)

CAPABILITIES: Merit Sensor designs, engineers, fabricates, dices,
assembles, tests, sells and services die and packaged products from astate-of-the-art facility near Salt Lake City, Utah

Note: Power supply decoupling and output filtering included
Gnd

TRVF Series Part Number Configurator

FEATURES
Pressure Range 1 to 300 psi / 0.07 to 20.7bar / 7 to 2067 kPa

DIMENSIONS FOR STANDARD OPTIONS (in millimeters):

Temperature
Range

Dimensions for reference only. Engineering drawings (with tolerance) available upon order10.32mm+0.15
2.31mm -0.05

2mm

3.02mm
12.85mm

1.75mm
3.26mm
1.61mmSMD Solder Pads Size: 2.1 X 1.0mm

Absolute or gage

Electrical
Connection

Spring Contacts

OutputDigital I2C and Analog Ratiometric 0.5V – 4.5V,

ElectricalProtection

output short circuit and supply high voltage /reverse polarity up to 40V

4.13mm

2.76mmSpring Contact Recommended Deflection:
0.65mm ±0.25mm (Normal Force @0.65mm = 0.67N)

Sales +1 801.208.4722 · Customer Service +1 801.208.4700 · Fax +1 801.208.4798 · sensors@merit.com · www.MeritSensor.com
1600 W. Merit Parkway · South Jordan, Utah · 84095 · USA

Packaging
0 = Tape and Reel
1 = TrayAccuracy
1 = 2.5% FS(standard)
2 = 1% FS (highaccuracy)

Pressure TypeA = Absolute
G = Gage
Pressure port
0 = Ceramic
ButtonElectrical Connection Type:0 = 5 spring contacts

APPLICATIONS

0.65mm

9.04mmPressure Type5.42mm

1.13mm
9.04mm-40°C to 150°C

TRVF-XXXXX-XXXX

Full Scale
Pressure*0015 = 15 psi
0100 = 100 psi
0300 = 300 psi

Industrial: Pneumatic systems, water levels, water pressure. It is also
used for air-conditioning and other refrigerant systems, portablemeasurement and analysis instrumentation, and industrial automation.

*Custom calibration available upon request

Automotive: Monitor the pressure of transmission fluid, fuel systems,
oil systems, exhaust gas, HVAC systems, Airbrake systems, etc.
Medical: Equipment for diagnosis and analysis.

Sales +1 801.208.4722 · Customer Service +1 801.208.4700 · Fax +1 801.208.4798 · sensors@merit.com · www.MeritSensor.com
1600 W. Merit Parkway · South Jordan, Utah · 84095 · USA

TRVFseriesDS.004