PGA309_05 BURR-BROWN [Burr-Brown Corporation], PGA309_05 Datasheet

no-image

PGA309_05

Manufacturer Part Number
PGA309_05
Description
Voltage Output PROFRAMMABLE SENSOR CONDITIONER
Manufacturer
BURR-BROWN [Burr-Brown Corporation]
Datasheet
FEATURES
D
D
D
D
D
D
D
D
D
D
D
D
D
APPLICATIONS
D
D
D
D
EVALUATION TOOLS
D
PRODUCTION DATA information is current as of publication date. Products
conform to specifications per the terms of Texas Instruments standard warranty.
Production processing does not necessarily include testing of all parameters.
All trademarks are the property of their respective owners.
COMPLETE BRIDGE SENSOR CONDITIONER
VOLTAGE OUTPUT: Ratiometric or Absolute
DIGITAL CAL: No Potentiometers/Sensor Trims
SENSOR ERROR COMPENSATION
LOW ERROR, TIME-STABLE
SENSOR LINEARIZATION CIRCUITRY
TEMPERATURE SENSE: Internal or External
CALIBRATION LOOKUP TABLE LOGIC
OVER/UNDER-SCALE LIMITING
SENSOR FAULT DETECTION
+2.7V TO +5.5V OPERATION
−40°C to +125°C OPERATION
SMALL TSSOP-16 PACKAGE
BRIDGE SENSORS
REMOTE 4-20mA TRANSMITTERS
STRAIN, LOAD, AND WEIGH SCALES
AUTOMOTIVE SENSORS
HARDWARE DESIGNER’S KIT (PGA309EVM)
− Span, Offset, and Temperature Drifts
− Uses External EEPROM (SOT23-5)
− Temperature Eval of PGA309 + Sensor
− Full Programming of PGA309
− Sensor Compensation Analysis Tool
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments
semiconductor products and disclaimers thereto appears at the end of this data sheet.
PROGRAMMABLE SENSOR CONDITIONER
P
+125_C
0
−40_C
psi
50
Voltage Output
T
Ext Temp
Transducer
N onlinear
Bridge
www.ti.com
DESCRIPTION
The PGA309 is a programmable analog signal conditioner
designed for bridge sensors. The analog signal path am-
plifies the sensor signal and provides digital calibration for
zero, span, zero drift, span drift, and sensor linearization
errors with applied stress (pressure, strain, etc.). The cal-
ibration is done via a One-Wire digital serial interface or
through a Two-Wire industry-standard connection. The
calibration parameters are stored in external nonvolatile
memory (typically SOT23-5) to eliminate manual trimming
and achieve long-term stability.
The all-analog signal path contains a 2x2 input multiplex-
er (mux), auto-zero programmable-gain instrumentation
amplifier, linearization circuit, voltage reference, internal
oscillator, control logic, and an output amplifier. Program-
mable level shifting compensates for sensor DC offsets.
The core of the PGA309 is the precision, low-drift, no 1/f
noise Front-End PGA (Programmable Gain Amplifier).
The overall gain of the Front-End PGA + Output Amplifier
can be adjusted from 2.7V/V to 1152V/V. The polarity of
the inputs can be switched through the input mux to ac-
commodate sensors with unknown polarity output. The
Fault Monitor circuit detects and signals sensor burnout,
overload, and system fault conditions.
For detailed application information, see the PGA309
User’s Guide (SBOU024), available for download at
www.ti.com.
PGA309
Digital
Temperature
Compensation
Monitor
Fault
Ext Temp
V
Int Temp
Analog Sensor Linearization
EXC
SBOS292B − DECEMBER 2003 − REVISED JANUARY 2005
Copyright  2003−2005, Texas Instruments Incorporated
Auto−Zero
PGA
Temp
ADC
V
S
Linearization
Circuit
Analog Signal Conditioning
Scale Limiter
Over/Under
Interface Circuitry
Control Register
Ref
Lin DAC
PGA309
Digital Cal
(SOT23− 5)
EEPROM
Linear
V
OUT

Related parts for PGA309_05

PGA309_05 Summary of contents

Page 1

PROGRAMMABLE SENSOR CONDITIONER FEATURES D COMPLETE BRIDGE SENSOR CONDITIONER D VOLTAGE OUTPUT: Ratiometric or Absolute D DIGITAL CAL: No Potentiometers/Sensor Trims D SENSOR ERROR COMPENSATION − Span, Offset, and Temperature Drifts D LOW ERROR, TIME-STABLE D SENSOR LINEARIZATION CIRCUITRY D ...

Page 2

PGA309 SBOS292B − DECEMBER 2003 − REVISED JANUARY 2005 PACKAGE/ORDERING INFORMATION PACKAGE DRAWING PRODUCT PACKAGE−LEAD PGA309 PGA309 TSSOP-16 TSSOP-16 (1) For the most current package and ordering information, see the Package Option Addendum located at the end of this data ...

Page 3

ELECTRICAL CHARACTERISTICS BOLDFACE limits apply over the specified temperature range +25° + SUPPLY ANALOG , SUPPLY DIGITAL ; V SA must ...

Page 4

PGA309 SBOS292B − DECEMBER 2003 − REVISED JANUARY 2005 ELECTRICAL CHARACTERISTICS (continued) BOLDFACE limits apply over the specified temperature range +25° + SUPPLY ANALOG , V ...

Page 5

ELECTRICAL CHARACTERISTICS (continued) BOLDFACE limits apply over the specified temperature range +25° + SUPPLY ANALOG , SUPPLY DIGITAL ; V SA ...

Page 6

PGA309 SBOS292B − DECEMBER 2003 − REVISED JANUARY 2005 ELECTRICAL CHARACTERISTICS (continued) BOLDFACE limits apply over the specified temperature range +25° + SUPPLY ANALOG , V ...

Page 7

ELECTRICAL CHARACTERISTICS (continued) BOLDFACE limits apply over the specified temperature range +25° + SUPPLY ANALOG , SUPPLY DIGITAL ; V SA ...

Page 8

PGA309 SBOS292B − DECEMBER 2003 − REVISED JANUARY 2005 PIN CONFIGURATION Top View PIN DESCRIPTION PIN NAME DESCRIPTION 1 V EXC Bridge sensor excitation. Connect to bridge if linearization and/or internal reference for bridge excitation used. 2 ...

Page 9

TYPICAL CHARACTERISTICS +25° + SUPPLY ANALOG , SUPPLY DIGITAL , V SA must equal GND D = GND A ...

Page 10

PGA309 SBOS292B − DECEMBER 2003 − REVISED JANUARY 2005 TYPICAL CHARACTERISTICS (Cont +25° + SUPPLY ANALOG , SUPPLY DIGITAL , V SA must ...

Page 11

TYPICAL CHARACTERISTICS (Cont +25° + SUPPLY ANALOG , SUPPLY DIGITAL , V SA must equal GND D = GND ...

Page 12

PGA309 SBOS292B − DECEMBER 2003 − REVISED JANUARY 2005 TYPICAL CHARACTERISTICS (Cont +25° + SUPPLY ANALOG , SUPPLY DIGITAL , V SA must ...

Page 13

FUNCTIONAL DESCRIPTION The PGA309 is a programmable analog signal conditioner designed for resistive bridge sensor applications complete signal conditioner with bridge excitation, initial span and offset adjustment, temperature adjustment of span internal/external temperature measurement capability, output ...

Page 14

PGA309 SBOS292B − DECEMBER 2003 − REVISED JANUARY 2005 PGA309 V EXC Σ K LIN V Internal O UT Temp Sense TEMP IN Temp ADC Signals Mux Coarse Offset Adjust IN1 Front−End PGA (Gain 4 to 128) ...

Page 15

ADC FOR TEMPERATURE SENSING The temperature sense circuitry compensation for the sensor span and offset drift. Either internal or external temperature sensing is possible. The temperature can be sensed in one of the following ways: D Bridge impedance change ...

Page 16

PGA309 SBOS292B − DECEMBER 2003 − REVISED JANUARY 2005 flag is programmed for high, then > 97% ADC range will be a fault; if programmed for low, then < 3% ADC range will be a fault. In this configuration, the ...

Page 17

DETAILED BLOCK DIAGRAM Linearization and V PGA309 V Enable EXC 7−Bit + Sign V EXC Lin DAC V EXC Σ TEMP 7µA Internal Internal REF Temp Sense I Enable TEMP TEMP TEMP ...

Page 18

PACKAGING INFORMATION (1) Orderable Device Status PGA309AIPWR ACTIVE PGA309AIPWRG4 ACTIVE PGA309AIPWT ACTIVE PGA309AIPWTG4 ACTIVE (1) The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs. LIFEBUY: TI has announced that the device will be ...

Page 19

TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Type Drawing PGA309AIPWR TSSOP PW PGA309AIPWT TSSOP PW PACKAGE MATERIALS INFORMATION Pins SPQ Reel Reel A0 (mm) Diameter Width (mm) W1 (mm) 16 2500 330.0 12.4 7.0 16 ...

Page 20

Device Package Type PGA309AIPWR TSSOP PGA309AIPWT TSSOP PACKAGE MATERIALS INFORMATION Package Drawing Pins SPQ Length (mm 2500 PW 16 250 Pack Materials-Page 2 30-Jan-2009 Width (mm) Height (mm) 346.0 346.0 29.0 190.5 212.7 ...

Page 21

PW (R-PDSO-G**) 14 PINS SHOWN 0, 0,15 1,20 MAX 0,05 PINS ** DIM A MAX A MIN NOTES: A. All linear dimensions are in millimeters. B. This drawing is subject to change without notice. C. Body ...

Page 22

Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should obtain the ...

Related keywords