DATA SHEETHTS1510 – Digital & Analog

The HTS 1510 Series is asurface-mountable package withboth digital and analog outputs
available. Its backside-pressure
measurement provides greatcompatibility with wet, corrosive
media. It is ideal for integration
on a control board.

FEATURES
PressureRange

1 to 100 psi / 70 to 7000 mbar / 7 to 700 kPa

Temp.

-40 to 125 °C

OutputDigital I2C and Analog 0.5V – 4.5V

Type

Absolute or Gage

Packaging

Tape and ReelHTS Series Part Number Configurator
1510-XXXX-X1X
Full-Scale
Pressure1
001 = 1psi
003 = 3psi015 = 15psi
100 = 100psi

APPLICATIONS
Industrial: To monitor HVAC systems, water levels, waterpressure, and processes. It is also used for air-conditioning
and other refrigerant systems, portable-measurement andanalysis instrumentation, and industrial automation.

Pressure TypeA = Absolute
G = Gage

Accuracy
1 = 2.5%
2 = 1.0%

Pin Type
1 = J-leadAddress (I2Coutput) 2
0 = 0x28

Automotive: To monitor the pressure of transmission fluid,fuel systems, oil systems, EGR systems, exhaust gas, etc.
Medical: Used in equipment for diagnosis and analysis.
1 Custom cailbration available upon request.
2 See note about addresses within the I2C communication section.
Sales +1 801.208.4722 · Customer Service +1 801.208.4700 · Fax +1 801.208.4798 · sales@meritsensor.com · www.MeritSensor.com
1600 W. Merit Parkway · South Jordan, Utah · 84095 · USA

HTSseriesDS.007

HTS1510 – Digital & Analog
SPECIFICATIONSParameter

Minimum

TypicalMaximum

Units

4.5

5

5.5

Vs

Notes

Electrical
Supply Voltage (Vs)
Supply Current

6.5mA

14Bits@5V input voltage.

Performance
Effective ADC Resolution

Applicable if Vs = nominal 5V.
Accuracy includes all error for hysteresis andlinearity over the entire operating temperature
range. It does not include lifetime drift. -40°Cto125°C. High performance accuracy notavailable for 1 psi parts.

AccuracyStandard
High Performance

-2.5
-1.0

00

2.5
1.0%FSAnalog Output Range (Vout)

1090%Vs

Analog Output Clipping Limit(Vout)

0100%Vs

Lifetime Drift-0.5

0.5%FS

10ms

Startup Time
Digital Update Time

50 to 100 optional
Other custom limits available upon requestms

Proof Pressure

2X

Full scale pressureBurst Pressure

5X

Full scale pressure

Enviromental
Operating Temperature-40

Storage Temperature-55

125°C°C

WeightGrams

1.48

Transfer Function Formula - Digital(Ppsi = ( Pmax – Pmin

Pcounts – 0.1 • Max
0.8 • Max•+ PminWhere
Ppsi
Pcounts
PMin
PMax
Max

= Measured Pressure in PSI= Pressure Counts from Merit Sensor Part= Minimum Pressure= Maximum Pressure= 32768 = 15 Bits

Where
Ppsi
PMax
PMin
Vmin
Vmax
Vout

= Measured Pressure in PSI= Maximum Pressure= Minimum Pressure= Minimum Volatage (Usually 0.5V)= Maximum Volatage (Usually 4.5V)= Output voltage

Transfer Function Formula - Analog(Ppsi = ( Pmax – Pmin•

Vout – Vmin
Vmax – Vmin+ Pmin

Vs0.1 uF

4ELECTRICAL
Note: The HTS product is represented by
the blue dashed line. The customer needs toinclude the other capacitors in their circuit.

SCL (I 2C)

21ASICMEMS

SDA (I2C)

5Vout(Analog)

760.1 uF

GND

347 nF
Only Required for Vout pin 5

HTS1510 – Digital & Analog
DIMENSIONS FOR STANDARD OPTIONS (in millimeters)
Dimensions for reference only. Engineering drawings (with tolerance) available upon order.
2.5

10.5

2.5

2.5P4432P3P2P116.4
11.4

13.1
3.7

SMT Landing Pad Layout

P6

1.3

3.8P5

1.3

Ø3.56

1.98P7P8

3.87

1.3

605

11.3 13.2

Ø3.15

10.2

5.1

PinDigitalAnalog

1SDA

N/C

2

SCL

N/C

3

VSSE (Ground)

GND
Vs (+5V)

4Vs (+5V)

1.8

5N/C

Vout

016Cap*Cap*

7Cap*Cap*8N/C

N/C

4.3
5.2

* Additional capacitor required between pins
6 & 7 (refer to electrical schematic).

8x 0.5I2C PARAMETERS (FOR REFERENCE ONLY)
Nr.

Parameter

SymbolTypMaxUnits

1

SCL clock frequency

fSCL				400kHz2

Bus free time between start and stop condition

tI2C_BF 		

1.3			 μs

3

Hold time start condition

tI2C_HD_STA 		

0.6			

4

Setup time repeated start condition

tI2C_SU_STA 		

0.6			μs

5

Low period SCL/SDA

tI2C_L 		

1.3 			μs

6High period SCL/SDA

tI2C_H 		

0.6 			μs

7

Data hold time

tI2C_HD_DAT 		

0.1			μs

8

Data setup time

tI2C_SU_DAT 		Rise time SCL/SDA

10Fall time SCL/SDA

0.1			tI2C_R 				 0.3tI2C_F			 0.3μs

911

Setup time stop condition

tI2C_SU_STO

0.3μs

12Fall time SCL/SDA

tI2C_NI50μs

I2C TIMING DIAGRAM (FOR REFERENCE ONLY)

Condition Min

0.6		
Spike suppression		

tI2C_RtI2C_FSCL
tI2C_SU_STA

tI2C_HD_STA

tI2C_SU_DAT

SDA

tI2C_HSCL
tI2C_SU_STO

tI2C_HD_STA

SDA
tI2C_BF

tI2C_LtI2C_HD_DATμsμsμs

HTS1510 – Digital & Analog
MERIT SENSOR 1510 I2C COMMUNICATIONI2C Write, Command Byte, and 2 Data Bytes
S6543210 W A

765432

1Device Slave
Command
Wait forI2C Write, Command Byte, and 2 Data Bytes
Address [6:0]
Byte [7:0]
Slave ACKS

6543210 W A

765I2C Write, Command Byte, No Data Bytes
S

65432Device Slave
Address [6:0]

10 W A

7Wait forSlave ACK

654433S

65432

10 W A

22CommandByte [7:0]DeviceDeviceSlaveSlave
Address
5Address[6:0](example:Bit 5)
S11300A S

Data
Byte [15:8]

8A

6543210Data
Byte [7:0]7654A S

Wait forSlave ACK

3210

Data
Byte [7:0]

Wait forSlave ACKA S

Wait forSlave ACK

Wait forSlave ACK

6Stop Condition

4Command Bit(example: Bit 4)

Wait forCommand
Wait for
Read/Write
Bit
W
Slave ACK
Byte [7:0](example:Write=0) Slave ACK

2Data Bit(example: Bit 2)

210

A S

Stop ConditionS

7

Wait forSlave ACKA 15 14 13 12 11 10 9

Wait forSlave ACK

ASStart Condition

4Data
Byte [15:8]

87Start Condition5

A 15 14 13 12 11 10 9

Wait forSlave ACK

Wait forCommandDevice Slave
I2C Write, Command Byte, No Data Bytes
Slave ACK
Byte [7:0]
Address [6:0]
S0

A Acknowledge (ACK)Command Bit

4

A Acknowledge (ACK)(example: Bit 4)
NOTE REGARDING I2C ADDRESSES:• Address
0x28
isthedefault
Read/Write Bit
Data Bit
Device Slave Address
5W2Write=0)(example:Bitrespond2)(example:Bit 5)• Otheraddresses(0x29, 0x2a,(example:0x2b availableupon request,)
willto both the given address, and 0x28

The correct command to write to the unit for setting up the data read is “0x2E 0x21 0x00”. This write

I2CRead, 2 (+n) DataBytes
commandinterrupts
the normal operation of the ASIC and should only beOptional
used once to “activate” theregister that holds the pressure data. Once the register is activated, any subsequent read of the device
6 5 4 3 2 1 0 R A 15 14 13 12 11 10 9 8 A 7 6 5 4 3 2 1 0 A 7 6 5 4 3 2 1 0 N Swill
return the data from that register.

S

I2C Read,
2 (+n)
DeviceSlaveData Bytes
Wait for
Address [6:0]
Slave ACKS

654321S

Start Condition5

Device Slave
Device Slave Address
Address [6:0](example: Bit 5)0

Data Byte[15:8]

MasterACK

R A 15 14 13 12 11 10 9S8A

Data Byte
[7:0]
7654
A

Stop Condition

Data Byte
Wait for
Read/Write Bit
R[15:8]
Slave ACK
(example: Read=1)

Master
ACK

232...nthOptional
Data Byte

MasterACK
10A

7

Acknowledge (ACK)Data Byte
MasterData Bit[7:0]
ACK(example: Bit 2)

SStart Condition

SStop Condition

A

Acknowledge (ACK)5

Device Slave Address(example: Bit 5)

R

Read/Write Bit(example: Read=1)

2

Data Bit(example: Bit 2)65

4MasterNACK

3210N

SN

No Acknowledge(NACK)No Acknowledge(NACK)...nth Data Byte
MasterNACKN

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

PACKAGING AND SHIPPING(Tape and Reel)
4.0mm

Part: 1510-100A-011
112.5

2.0mm

Calibrated Range (Pressure)100

PSI (absolute)

87.5
75
62.5
50

32.0mm

37.5
25
12.50
03276.8-12.5

6553.69830.413107.2

16384

19660.8

22937.6

26214.4

29491.2

32768

20mm

0Counts

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