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參數資料
| 型號： | PGA309 |
| 英文描述： | Voltage Output PROGRAMMABLE SENSOR CONDITIONER |
| 中文描述： | 電壓輸出可編程傳感器空調 |
| 文件頁數： | 1/20頁 |
| 文件大小： | 298K |
| 代理商： | PGA309 |
FEATURES
COMPLETE BRIDGE SENSOR CONDITIONER
VOLTAGE OUTPUT: Ratiometric or Absolute
DIGITAL CAL: No Potentiometers/Sensor Trims
SENSOR ERROR COMPENSATION
Span, Offset, and Temperature Drifts
LOW ERROR, TIME-STABLE
SENSOR LINEARIZATION CIRCUITRY
TEMPERATURE SENSE: Internal or External
CALIBRATION LOOKUP TABLE LOGIC
Uses External EEPROM (SOT23-5)
OVER/UNDER-SCALE LIMITING
SENSOR FAULT DETECTION
+2.7V TO +5.5V OPERATION
40
°
C to +125
°
C OPERATION
SMALL TSSOP-16 PACKAGE
APPLICATIONS
BRIDGE SENSORS
REMOTE 4-20mA TRANSMITTERS
STRAIN, LOAD, AND WEIGH SCALES
AUTOMOTIVE SENSORS
EVALUATION TOOLS
HARDWARE DESIGNER’S KIT (PGA309EVM)
Temperature Eval of PGA309 + Sensor
Full Programming of PGA309
Sensor Compensation Analysis Tool
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.
V
S
All trademarks are the property of their respective owners.
PGA309
SBOS292A DECEMBER 2003 REVISED AUGUST 2004
Voltage Output
PROGRAMMABLE SENSOR CONDITIONER
!
!
www.ti.com
Copyright
20032004, Texas Instruments Incorporated
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.
Analog Sensor Linearization
Digital
Temperature
Compensation
Analog Signal Conditioning
Linear
V
OUT
PGA309
Digital Cal
V
EXC
0
50
psi
P
Ext Temp
Ext Temp
Nonlinear
Bridge
Transducer
Linearization
Circuit
AutoZero
PGA
Fault
Monitor
Int Temp
Control Register
Interface Circuitry
EEPROM
(SOT235)
Ref
T
+125 C
40 C
Over/Under
Scale Limiter
Lin DAC
Temp
ADC
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相關代理商/技術參數 |
參數描述 |
|---|---|
| PGA309_05 | 制造商:BB 制造商全稱:BB 功能描述:Voltage Output PROFRAMMABLE SENSOR CONDITIONER |
| PGA309_11 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:Voltage Output Programmable Sensor Conditioner |
| PGA309AIPWR | 功能描述:電流靈敏放大器 PGA309 Voltage Out Prog Sensor Cndtner RoHS:否 制造商:Texas Instruments 通道數量: 共模抑制比（最小值）:110 dB 輸入補償電壓:80 uV 電源電壓-最大:5.5 V 電源電壓-最小:2.7 V 電源電流:350 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-16 封裝:Reel |
| PGA309AIPWRG4 | 功能描述:電流靈敏放大器 PGA309 Voltage Out Prog Sensor Cndtner RoHS:否 制造商:Texas Instruments 通道數量: 共模抑制比（最小值）:110 dB 輸入補償電壓:80 uV 電源電壓-最大:5.5 V 電源電壓-最小:2.7 V 電源電流:350 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-16 封裝:Reel |
| PGA309AIPWT | 功能描述:電流靈敏放大器 PGA309 Voltage Out Prog Sensor Cndtner RoHS:否 制造商:Texas Instruments 通道數量: 共模抑制比（最小值）:110 dB 輸入補償電壓:80 uV 電源電壓-最大:5.5 V 電源電壓-最小:2.7 V 電源電流:350 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-16 封裝:Reel |
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