(China (Mainland))
Product Summary
The PGA2500IDB is a digitally controlled, analog microphone preamplifier designed for use as a front end for high-performance audio analog-to-digital converters (ADCs). The PGA2500IDB 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 applications of the PGA2500IDB are (1)Microphone Preamplifiers and Mixers; (2)Digital Mixers and Recorders.
Parametrics
PGA2500IDB absolute maximum ratings: (1)Supply Voltage, VA+ +5.5 V; (2)Supply Voltage, VA- -5.5 V; (3)Supply Voltage, VD- -5.5 V; (4)Voltage Difference, VA- to VD- Less than 300 mV; (5)Analog input voltage (VA-) -0.3 to (VA+) +0.3 V; (6)Digital input voltage -0.3 to (VA+) + 0.3 V; (7)Operating Temperature Range -40 to +85℃; (8)Storage Temperature Range -60 to +150℃.
Features
PGA2500IDB features: (1)Fully Differential Input-to-Output Architecture; (2)Digitally Controlled Gain Using Serial Port Interface: Gain Range: 10dB through 65dB, 1dB per step; Unity (0dB) Gain Setting via Serial Port or Dedicated Control Pin; (3)Dynamic Performance: Equivalent Input Noise with ZS = 150 and; (4)Gain = 30dB: 128dBu; Total Harmonic Distortion plus Noise; (5)(THD+N) with Gain = 30dB: 0.0004%; (6)Zero Crossing Detection Minimizes Audible Artifacts when Gain Switching; (7)Integrated DC Servo Minimizes Output Offset Voltage; (8)Common-Mode Servo Improves CMRR; (9)Four-Wire Serial Control Port Interface; (10)Dedicated Input Pin for Selecting Unity Gain; (11)Overload Output Pin Provides Clipping Indication; (12)Four General-Purpose Digital Output Pins; (13)Requires ±5V Power Supplies; (14)Available in an SSOP-28 Package.
Diagrams
| Image | Part No | Mfg | Description |  |
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 PGA2500IDB |
Texas Instruments |
Microphone Preamplifiers GainRange:0dBand |
Data Sheet |
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PGA2500IDBG4 |
Texas Instruments |
Microphone Preamplifiers 0dB & 10dB-65dB in 1dB steps |
Data Sheet |
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PGA2500IDBR |
Texas Instruments |
Microphone Preamplifiers 0dB & 10dB-65dB in 1dB steps |
Data Sheet |
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PGA2500IDBRG4 |
Texas Instruments |
Microphone Preamplifiers 0dB & 10dB-65dB in 1dB steps |
Data Sheet |
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