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PGA309AIPWRG4.B数据手册规格书PDF详情
1FEATURES
2• 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 amplifies 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 calibration 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
multiplexer (mux), auto-zero programmable-gain
instrumentation amplifier, linearization circuit, voltage
reference, internal oscillator, control logic, and an
output amplifier. Programmable 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 accommodate 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.
供应商 | 型号 | 品牌 | 批号 | 封装 | 库存 | 备注 | 价格 |
---|---|---|---|---|---|---|---|
TI/德州仪器 |
23+ |
TSSOP16 |
50000 |
全新原装正品现货,支持订货 |
|||
TI/德州仪器 |
24+ |
TSSOP16 |
60000 |
全新原装现货 |
|||
TI/德州仪器 |
25+ |
TSSOP16 |
54658 |
百分百原装现货 实单必成 |
|||
TI/德州仪器 |
24+ |
TSSOP16 |
39197 |
郑重承诺只做原装进口现货 |
|||
24+ |
TSSOP-16 |
745 |
|||||
TI |
25+ |
TSSOP |
5000 |
热卖 |
|||
BB |
25+ |
SMD |
18000 |
原厂直接发货进口原装 |
|||
TI |
17+ |
TSSOP16 |
6200 |
100%原装正品现货 |
|||
TI/BB |
09+ |
TSSOP16 |
2155 |
主营TI/BB原装正品货绝对还 |
|||
TI |
23+ |
TSSOP16 |
8000 |
原装正品,假一罚十 |
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