PGA308

AKTIV

Single-Supply-Verstärker mit Autozero-Sensor; Verstärkung und Offset programmierbar

Produktdetails

PGA/VGA PGA Number of channels 2 Vs (min) (V) 2.7 Vs (max) (V) 5.5 Input type Differential Output type Single-ended Input offset drift (±) (typ) (µV/°C) 0.2 Interface type 1-wire, UART Noise at 1 kHz (typ) (V√Hz) 0.00000005 BW at Acl (MHz) 2 Acl, min spec gain (V/V) 4 Voltage gain (max) (V/V) 80 Gain (max) (dB) 64 Architecture CMOS Features Fault Detection Vos (offset voltage at 25°C) (typ) (mV) 0.005 Input voltage noise (typ) (µV√Hz) 0.05 Slew rate (typ) (V/µs) 0.6 Iq per channel (typ) (mA) 1.3 Gain error (typ) (%) 0.3 Gain drift (max) (ppm/°C) 6 Rating Catalog Operating temperature range (°C) -40 to 125
PGA/VGA PGA Number of channels 2 Vs (min) (V) 2.7 Vs (max) (V) 5.5 Input type Differential Output type Single-ended Input offset drift (±) (typ) (µV/°C) 0.2 Interface type 1-wire, UART Noise at 1 kHz (typ) (V√Hz) 0.00000005 BW at Acl (MHz) 2 Acl, min spec gain (V/V) 4 Voltage gain (max) (V/V) 80 Gain (max) (dB) 64 Architecture CMOS Features Fault Detection Vos (offset voltage at 25°C) (typ) (mV) 0.005 Input voltage noise (typ) (µV√Hz) 0.05 Slew rate (typ) (V/µs) 0.6 Iq per channel (typ) (mA) 1.3 Gain error (typ) (%) 0.3 Gain drift (max) (ppm/°C) 6 Rating Catalog Operating temperature range (°C) -40 to 125
VSON (DRK) 10 12 mm² (4 mm × 3 mm) VSSOP (DGS) 10 14.7 mm² (3 mm × 4.9 mm)
  • Digital Calibration for Bridge Sensors
  • Offset Select: Coarse and Fine
  • Gain Select: Coarse and Fine
  • Bridge Fault Monitor
  • Input Mux for Lead Swap
  • Over/Under Scale Limits
  • DOUT/VOUT Clamp Function
  • Seven Banks OTP Memory
  • One-Wire Digital UART Interface
  • Operating Voltage: +2.7V to +5.5V
  • Temperature Range: –40°C to +125°C
  • MSOP-10 and 3mm × 4mm DFN-10 Packages
  • Digital Calibration for Bridge Sensors
  • Offset Select: Coarse and Fine
  • Gain Select: Coarse and Fine
  • Bridge Fault Monitor
  • Input Mux for Lead Swap
  • Over/Under Scale Limits
  • DOUT/VOUT Clamp Function
  • Seven Banks OTP Memory
  • One-Wire Digital UART Interface
  • Operating Voltage: +2.7V to +5.5V
  • Temperature Range: –40°C to +125°C
  • MSOP-10 and 3mm × 4mm DFN-10 Packages

The PGA308 is a programmable analog sensor signal conditioner. The analog signal path amplifies the sensor signal and provides digital calibration for offset and gain. Calibration is done via the 1W pin, a digital One-Wire, UART-compatible interface. For three-terminal sensor modules, 1W may be connected to VOUT and the assembly programmed through the VOUT pin. Gain and offset calibration parameters are stored onboard in seven banks of one-time programmable (OTP) memory. The power-on reset (POR) OTP bank may be programmed a total of four times.

The all-analog signal path contains a 2×2 input multiplexer (mux) to allow electronic sensor lead swapping, a coarse offset adjust, an auto-zero programmable gain instrumentation amplifier (PGA), a fine gain adjust, a fine offset adjust, and a programmable gain output amplifier. Fault monitor circuitry detects and signals sensor burnout, overload, and system fault conditions. Over/under-scale limits provide additional means for system level diagnostics. The dual-use DOUT/VCLAMP pin can be used as a programmable digital output or as a VOUT over-voltage clamp.

For detailed application information, see the PGA308 User's Guide (SBOU069) available for download at www.ti.com.

The PGA308 is a programmable analog sensor signal conditioner. The analog signal path amplifies the sensor signal and provides digital calibration for offset and gain. Calibration is done via the 1W pin, a digital One-Wire, UART-compatible interface. For three-terminal sensor modules, 1W may be connected to VOUT and the assembly programmed through the VOUT pin. Gain and offset calibration parameters are stored onboard in seven banks of one-time programmable (OTP) memory. The power-on reset (POR) OTP bank may be programmed a total of four times.

The all-analog signal path contains a 2×2 input multiplexer (mux) to allow electronic sensor lead swapping, a coarse offset adjust, an auto-zero programmable gain instrumentation amplifier (PGA), a fine gain adjust, a fine offset adjust, and a programmable gain output amplifier. Fault monitor circuitry detects and signals sensor burnout, overload, and system fault conditions. Over/under-scale limits provide additional means for system level diagnostics. The dual-use DOUT/VCLAMP pin can be used as a programmable digital output or as a VOUT over-voltage clamp.

For detailed application information, see the PGA308 User's Guide (SBOU069) available for download at www.ti.com.

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Technische Dokumentation

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Top-Dokumentation Typ Titel Format-Optionen Neueste englische Version herunterladen Datum
* Datenblatt Single-Supply, Auto-Zero Sensor Amplifier with Programmable Gain and Offset datasheet (Rev. B) 22.12.2010
Informationen zur funktionalen Sicherheit PGA308 Functional Safety, FIT Rate, Failure Mode Distribution and Pin FMA PDF | HTML 20.06.2024
Application brief Multichannel Analog Input Modules for PLC Equipment 04.01.2019
Benutzerhandbuch PGA308 User's Guide (Rev. B) 27.01.2012
Benutzerhandbuch Multi-Cal-PGA308 System User Guide 29.04.2011
Benutzerhandbuch Multi-Cal-Interface User's Guide 09.09.2010
Benutzerhandbuch Multi-Cal-Slave User's Guide 09.09.2010
Benutzerhandbuch Multi-Cal-Cable User's Guide 08.09.2010
Benutzerhandbuch Multi-Cal-Master User's Guide 22.08.2010
Benutzerhandbuch Multi-Cal-Test Users Guide 22.08.2010
Benutzerhandbuch tioScript Editor Users Guide 26.08.2008
Benutzerhandbuch USB DAQ Platform User's Guide 20.03.2008

Design und Entwicklung

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Evaluierungsplatine

MULTI-CAL-SYSTEM — Multi-Cal-System-Basis-Starterkit

The Multi-Cal-System is a system of evaluation modules and accessories that can be used to calibrate multiple PGA308 sensor modules. The Multi-Cal-System can be configured to calibrate from 8 to 64 PGA308s simultaneously. The key component of the Multi-Cal-System is the Multi-Cal-System Starter (...)

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Evaluierungsplatine

PGA308EVM — PGA308-Evaluierungsmodul

The PGA308EVM key hardware consists of two boards, PGA308 Test Board and USB DAQ Platform. The PGA308 Test Board contains the PGA308, terminal strips for external connections, several jumpers for device configuration, and support circuitry. The PGA308 Test Board can be used to fully test your (...)

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Support-Software

SBOC256 — PGA308EVM Source Code

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Support-Software

SBOC257 — PGA308EVM Software

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Support-Software

SBOC390 — Multi-Cal-PGA308 System Software

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Support-Software

SBOC391 — Multi-Cal-PGA308 System Source Code

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Gehäuse Pins CAD-Symbole, Footprints und 3D-Modelle
VSON (DRK) 10 Ultra Librarian
VSSOP (DGS) 10 Ultra Librarian

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