Product details

Gain range (dB) 9dB through 60dB, in 3dB steps Input voltage noise (typ) (nV√Hz) 3 Power supply (typ) (V) ±5 Iq (typ) (mA) 30 Interface type Digital SPI Operating temperature range (°C) -40 to 85 Rating Catalog
Gain range (dB) 9dB through 60dB, in 3dB steps Input voltage noise (typ) (nV√Hz) 3 Power supply (typ) (V) ±5 Iq (typ) (mA) 30 Interface type Digital SPI Operating temperature range (°C) -40 to 85 Rating Catalog
SSOP (DB) 24 63.96 mm² 8.2 x 7.8
  • FULLY DIFFERENTIAL lNPUT-TO-OUTPUT ARCHITECTURE
  • DIGITALLY-CONTROLLED GAIN USING SPI™:
    • Gain Range: 9dB through 60dB, 3dB per Step
    • Unity (0dB) Gain Setting via Serial Port
  • DYNAMIC PERFORMANCE:
    • Equivalent Input Noise with ZS = 150 and Gain = 30dB: -123dBu
    • Total Harmonic Distortion plus Noise (THD+N) with Gain = 30dB: 0.0006%
  • ZERO CROSSING DETECTION MINIMIZES AUDIBLE ARTIFACTS WHEN GAIN SWITCHING
  • INTEGRATED DC SERVO MINIMIZES OUTPUT OFFSET VOLTAGE
  • COMMON-MODE SERVO IMPROVES CMRR
  • FOUR-WIRE SERIAL CONTROL PORT INTERFACE:
    • Simple Interface to Microprocessor or DSP Serial Ports
    • Supports Daisy-Chaining of Multiple PGA2505 Devices
  • OVER-RANGE OUTPUT PIN PROVIDES CLIPPING INDICATION
  • FOUR GENERAL-PURPOSE DIGITAL OUTPUT PINS
  • ±5V POWER SUPPLIES
  • AVAILABLE IN AN SSOP-24 PACKAGE
  • APPLICATIONS
    • MICROPHONE PREAMPLIFIERS AND MIXERS
    • DIGITAL MIXERS AND RECORDERS
    • DIGITAL AUDIO EDITING SYSTEMS
    • BROADCAST EQUIPMENT
    • INTERCOMS

All trademarks are the property of their respective owners.

  • FULLY DIFFERENTIAL lNPUT-TO-OUTPUT ARCHITECTURE
  • DIGITALLY-CONTROLLED GAIN USING SPI™:
    • Gain Range: 9dB through 60dB, 3dB per Step
    • Unity (0dB) Gain Setting via Serial Port
  • DYNAMIC PERFORMANCE:
    • Equivalent Input Noise with ZS = 150 and Gain = 30dB: -123dBu
    • Total Harmonic Distortion plus Noise (THD+N) with Gain = 30dB: 0.0006%
  • ZERO CROSSING DETECTION MINIMIZES AUDIBLE ARTIFACTS WHEN GAIN SWITCHING
  • INTEGRATED DC SERVO MINIMIZES OUTPUT OFFSET VOLTAGE
  • COMMON-MODE SERVO IMPROVES CMRR
  • FOUR-WIRE SERIAL CONTROL PORT INTERFACE:
    • Simple Interface to Microprocessor or DSP Serial Ports
    • Supports Daisy-Chaining of Multiple PGA2505 Devices
  • OVER-RANGE OUTPUT PIN PROVIDES CLIPPING INDICATION
  • FOUR GENERAL-PURPOSE DIGITAL OUTPUT PINS
  • ±5V POWER SUPPLIES
  • AVAILABLE IN AN SSOP-24 PACKAGE
  • APPLICATIONS
    • MICROPHONE PREAMPLIFIERS AND MIXERS
    • DIGITAL MIXERS AND RECORDERS
    • DIGITAL AUDIO EDITING SYSTEMS
    • BROADCAST EQUIPMENT
    • INTERCOMS

All trademarks are the property of their respective owners.

The PGA2505 is a digitally-controlled, analog microphone preamplifier designed for use as a front-end for high-performance audio analog-to-digital converters (ADCs). The PGA2505 features include low noise, wide dynamic range, and a differential signal path. An on-chip dc servo loop is employed to minimize dc offset, while a common-mode servo function may be used to enhance common-mode rejection.

The PGA2505 features a gain range of 9dB through 60dB (3dB/step), along with a unity gain setting. The wide gain range allows the PGA2505 to be used with a variety of microphones. Gain settings and internal functions are programmed using a 16-bit control word, which is loaded using a simple serial port interface. A serial data output pin provides support for daisy-chained connection of multiple PGA2505 devices. Four programmable digital outputs are provided for controlling the external switching of input pads, phantom power, and high-pass filters. The PGA2505 requires both +5V and -5V power supplies and is available in a small SSOP-24 package.

The PGA2505 is a digitally-controlled, analog microphone preamplifier designed for use as a front-end for high-performance audio analog-to-digital converters (ADCs). The PGA2505 features include low noise, wide dynamic range, and a differential signal path. An on-chip dc servo loop is employed to minimize dc offset, while a common-mode servo function may be used to enhance common-mode rejection.

The PGA2505 features a gain range of 9dB through 60dB (3dB/step), along with a unity gain setting. The wide gain range allows the PGA2505 to be used with a variety of microphones. Gain settings and internal functions are programmed using a 16-bit control word, which is loaded using a simple serial port interface. A serial data output pin provides support for daisy-chained connection of multiple PGA2505 devices. Four programmable digital outputs are provided for controlling the external switching of input pads, phantom power, and high-pass filters. The PGA2505 requires both +5V and -5V power supplies and is available in a small SSOP-24 package.

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Technical documentation

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* Data sheet Digitally-Controlled Microphone Preamplifier datasheet (Rev. B) 10 Jun 2009
User guide PGA2505EVMV2 User's Guide PDF | HTML 12 Oct 2021
EVM User's guide PGA2505EVM User's Guide 17 Jun 2009

Design & development

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Evaluation board

PGA2505EVM — PGA2505 Evaluation Module

The PGA2505EVM is a convenient platform for evaluating the performance and features of the PGA2505. The PGA2505 is a digitally-controlled, microphone preamplifier designed for amplifying the output of dynamic and condenser microphones and driving high-performance audio analog-to-digital (A/D) (...)

User guide: PDF
Not available on TI.com
Evaluation board

PGA2505EVMV2 — PGA2505 evaluation module digitally-controlled microphone preamplifier with USB interface

The PGA2505EVMV2 evaluation module (EVM) provides a convenient platform for evaluating the performance and features of the PGA2505 product. The programmable gain amplifier can be programmed to either pass through the signal at unity gain, or apply 9-dB to 60-dB (3dB steps) of gain to the input (...)

User guide: PDF | HTML
Not available on TI.com
Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
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SSOP (DB) 24 Ultra Librarian

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