PGA2505IDB

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PGA2505IDB

Gain Range: 0dB, and 9dB to 60dB, in 3dB steps

Packaging

Package | PIN: DB | 24
Temp: I (-40 to 85)
Carrier: Partial Tube
Qty Price
1-9 $9.67
10-24 $8.99
25-99 $8.68
100-249 $7.58
250-499 $7.21
500-749 $6.64
750-999 $5.96
1000+ $5.94

Features

  • 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

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Texas Instruments  PGA2505IDB

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.