TAA3040中文資料德州儀器數(shù)據(jù)手冊PDF規(guī)格書

1 Features

? Multichannel high-performance ADC:

– 4-channel analog microphones or line-in,

– 8-channel digital PDM microphones, or

– Combination of analog and digital microphones

? ADC line and microphone differential input

performance:

– Dynamic range (DR): 104dB

– THD+N: –95dB

? ADC channel summing mode, DR performance:

– 107dB, 2-channel summing

– 110dB, 4-channel summing

? ADC input voltage:

– Differential, 2VRMS full-scale inputs

– Single-ended, 1VRMS full-scale inputs

? ADC sample rate (fS) = 8kHz to 768kHz

? Programmable channel settings:

– Channel gain: 0dB to 42dB, 1dB steps

– Digital volume control: –100dB to 27dB

– Gain calibration with 0.1dB resolution

– Phase calibration with 163ns resolution

? Programmable microphone bias or supply voltage

generation

? Low-latency signal processing filter selection

? Programmable HPF and biquad digital filters

? Automatic gain controller (AGC)

? I2C or SPI controls

? Integrated high-performance audio PLL

? Automatic clock divider setting configurations

? Audio serial data interface:

– Format: TDM, I2S, or left-justified (LJ)

– Word length: 16 bits, 20 bits, 24 bits, or 32 bits

– Master or slave interface

? Single-supply operation: 3.3V or 1.8V

? I/O-supply operation: 3.3V or 1.8V

? Power consumption for 1.8-V AVDD supply:

– 8.5mW/channel at 16kHz sample rate

– 9.2mW/channel at 48kHz sample rate

2 Applications

? Smart speakers

? IP network cameras

? Professional microphones and wireless systems

? Video conference systems

3 Description

The TAA3040 is a Burr-Brown? high-performance,

audio analog-to-digital converter (ADC) that supports

simultaneous sampling of up to four analog

channelsor eight digital channels for the pulse density

modulation (PDM) microphone input. The device

supports line and microphone inputs and allows

single-ended and differential input configurations. The

device integrates programable channel gain, digital

volume control, a programmable microphone bias

voltage, a phase-locked loop (PLL), a programmable

high-pass filter (HPF), biquad filters, low-latency filter

modes, and allows for sample rates up to 768kHz.

The device supports time-division multiplexing (TDM),

I2S, or left-justified (LJ) audio formats, and can be

controlled with either the I2C or SPI interface. These

integrated high-performance features and the ability

to be powered from a single supply of 3.3V or

1.8V make the device an excellent choice for spaceconstrained

audio systems in far-field microphone

recording applications.

The TAA3040 is specified from –40°C to +105°C and

is offered in a 24-pin WQFN package.