PGA854

ACTIVO

Amplif. de instr. de bajo ruido, ancho de banda amplio y salida totalmente dif. con gan. programable

Detalles del producto

PGA/VGA PGA Number of channels 1 Vs (min) (V) 9 Vs (max) (V) 36 Input type Differential Output type Differential Input offset drift (±) (typ) (µV/°C) 0.3 Interface type GPIO BW at Acl (MHz) 8 Acl, min spec gain (V/V) 0.5 Gain (max) (dB) 100 Architecture Bipolar Features Fully Differential, Overvoltage protection, Super-beta Vos (offset voltage at 25°C) (typ) (mV) 0.05 Input voltage noise (typ) (µV√Hz) 0.034 Slew rate (typ) (V/µs) 35 Iq per channel (typ) (mA) 5.2 Gain error (typ) (%) 0.01 Gain drift (max) (ppm/°C) 2 Rating Catalog Operating temperature range (°C) -40 to 125
PGA/VGA PGA Number of channels 1 Vs (min) (V) 9 Vs (max) (V) 36 Input type Differential Output type Differential Input offset drift (±) (typ) (µV/°C) 0.3 Interface type GPIO BW at Acl (MHz) 8 Acl, min spec gain (V/V) 0.5 Gain (max) (dB) 100 Architecture Bipolar Features Fully Differential, Overvoltage protection, Super-beta Vos (offset voltage at 25°C) (typ) (mV) 0.05 Input voltage noise (typ) (µV√Hz) 0.034 Slew rate (typ) (V/µs) 35 Iq per channel (typ) (mA) 5.2 Gain error (typ) (%) 0.01 Gain drift (max) (ppm/°C) 2 Rating Catalog Operating temperature range (°C) -40 to 125
VQFN (RGT) 16 9 mm² (3 mm × 3 mm)
  • Eight pin-programmable decade (scope) gains
    • G (V/V) = ½, 1, 2, 5, 10, 20, 50, and 100
  • Fully differential outputs
  • Output common-mode control
  • Low gain error drift: ±2ppm/°C (maximum)
  • Faster signal processing:
    • Wide bandwidth: 6.2MHz (G < 10), 2.4MHz (G = 50, 100)
    • High slew rate: 45V/µs at all gains
    • Settling time: 750ns to 0.01% (G < 20)
    • Input stage noise: 8.8nV/√Hz at G > 10V/V
    • Filter option to achieve better SNR
  • Input overvoltage protection to ±40V beyond supplies
  • Input-stage supply range:
    • Single supply: 9V to 36V
    • Dual supply: ±4.5V to ±18V
  • Independent output power-supply pins
  • Output-stage supply range:
    • Single supply: 4.5V to 36V
    • Dual supply: ±2.25V to ±18V
  • Specified temperature range: ­–40°C to +125°C
  • Small package: 3mm × 3mm VQFN
  • Eight pin-programmable decade (scope) gains
    • G (V/V) = ½, 1, 2, 5, 10, 20, 50, and 100
  • Fully differential outputs
  • Output common-mode control
  • Low gain error drift: ±2ppm/°C (maximum)
  • Faster signal processing:
    • Wide bandwidth: 6.2MHz (G < 10), 2.4MHz (G = 50, 100)
    • High slew rate: 45V/µs at all gains
    • Settling time: 750ns to 0.01% (G < 20)
    • Input stage noise: 8.8nV/√Hz at G > 10V/V
    • Filter option to achieve better SNR
  • Input overvoltage protection to ±40V beyond supplies
  • Input-stage supply range:
    • Single supply: 9V to 36V
    • Dual supply: ±4.5V to ±18V
  • Independent output power-supply pins
  • Output-stage supply range:
    • Single supply: 4.5V to 36V
    • Dual supply: ±2.25V to ±18V
  • Specified temperature range: ­–40°C to +125°C
  • Small package: 3mm × 3mm VQFN

The PGA854 is a wide-bandwidth, high-voltage, low-noise programmable gain instrumentation amplifier with differential output. The PGA854 is equipped with eight decade (scope) gain settings, from an attenuating gain of 0.5V/V to a maximum of 100V/V. Gain is set using three digital gain selection pins.

The PGA854 architecture is optimized to drive inputs of high-resolution, precision analog-to-digital converters (ADCs) with sampling rates up to 1MSPS without the need for an additional ADC driver. The output-stage power supplies are decoupled from the input stage to protect the ADC or downstream devices against overdrive damage.

The super-beta input transistors offer an impressively low input bias current, which in turn provides a very low input current noise density of 0.3pA/√Hz, making the PGA854 a versatile choice for virtually any sensor type. The low-noise current-feedback front-end architecture offers exceptional gain flatness even at high frequencies, making the PGA854 an excellent high-impedance sensor readout device. Integrated protection circuitry on the input pins handles overvoltages of up to ±40V beyond the power-supply voltages.

The PGA854 is a wide-bandwidth, high-voltage, low-noise programmable gain instrumentation amplifier with differential output. The PGA854 is equipped with eight decade (scope) gain settings, from an attenuating gain of 0.5V/V to a maximum of 100V/V. Gain is set using three digital gain selection pins.

The PGA854 architecture is optimized to drive inputs of high-resolution, precision analog-to-digital converters (ADCs) with sampling rates up to 1MSPS without the need for an additional ADC driver. The output-stage power supplies are decoupled from the input stage to protect the ADC or downstream devices against overdrive damage.

The super-beta input transistors offer an impressively low input bias current, which in turn provides a very low input current noise density of 0.3pA/√Hz, making the PGA854 a versatile choice for virtually any sensor type. The low-noise current-feedback front-end architecture offers exceptional gain flatness even at high frequencies, making the PGA854 an excellent high-impedance sensor readout device. Integrated protection circuitry on the input pins handles overvoltages of up to ±40V beyond the power-supply voltages.

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* Hoja de datos PGA854 Low-Noise, Wide-Bandwidth, Decade Gain, Precision Programmable Gain Instrumentation Amplifier datasheet (Rev. A) PDF | HTML 5/12/2025

Diseño y desarrollo

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Placa de evaluación

PGA854EVM — Módulo de evaluación PGA854

El módulo de evaluación PGA854 (PGA854EVM) es una plataforma de desarrollo para evaluar el PGA854, un amplificador de instrumentación de ganancia programable (PGIA) de precisión, bajo ruido y gran ancho de banda con salidas totalmente diferenciales. El PGA854 está equipado con ocho ajustes de (...)
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