PGA301-Q1 Datasheet, PDF (1/3 Pages) Texas Instruments – Pressure Sensor Signal Conditioner

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PGA301-Q1 Pressure Sensor Signal Conditioner
PGA301-Q1
SLDS219 – MARCH 2016
1 Features
•1 Analog Features
– Analog Front-End for Resistive Bridge Sensors
– On-Chip Temperature Sensor
– Programmable Gain
– 16-Bit, 1-MHz Sigma-Delta Analog-to-Digital
Converter for Signal Channel
– 10-Bit Sigma-Delta Analog-to-Digital Converter
for Temperature Channel
– One 12-Bit DAC Outputs
• Digital Features
– Compensation Equation
– 2nd order Temperature Compensation
– On-Chip Oscillator
– Memory
– 89 Bytes of EEPROM
• Peripheral Features
– One-Wire Interface (OWI)
– Software Watchdog Timer
– Oscillator Watchdog
– Power Management Control
– Analog Low-Voltage Detect
• General Features
– Automotive Temperature Range: –40°C to
125°C
– Power Supply: 4.5-V to 5.5-V Operational,
–5.5-V to 16-V Absolute Maximum
– Qualified in Accordance With AEC-Q100
– QFN-36 Package
2 Applications
• Resistive Pressure Sensor Signal Conditioning
3 Description
The PGA301-Q1 is an interface device for
piezoresistive and strain gauge sense elements. The
device incorporates the analog front end that directly
connects to the sense element and has voltage
regulators and oscillator. The device also includes
sigma-delta analog-to-digital converter, 2nd order
compensation and EEPROM memory. The PGA301-
Q1 also includes one ratiometric voltage output.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
PGA301QRHHRQ1 QFN (36)
6.00 × 6.00 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Functional Block Diagram
Bridge
Sensor
VBRG
PGA301-Q1
Bridge Excitation
VIN1P
VIN1N
Gain
ADC1
EEPROM
SPI/I²C
OWI_EN
SCK/
SDI/
SDO
VIN2P
VIN2N
VIN3
Resistive Sensing AFE
Gain
ADC2
Control and
Status
Registers
DAC1
DAC2
VOUT1
/OWI
VOUT2
Optional External
Temperature
Sensor
Temperature Sensing AFE
Internal
Temperature
Sensor
Diagnostics
2^nd Order TC & 2^nd
Order NL Sensor
Compensation
Internal Oscillator
and XTAL
Interface
XTAL
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCT PREVIEW Information. Product in design phase of
development. Subject to change or discontinuance without notice.