參數(shù)資料
型號(hào): EVAL-ADAU1781Z
廠商: Analog Devices Inc
文件頁(yè)數(shù): 25/92頁(yè)
文件大?。?/td> 0K
描述: BOARD EVAL FOR ADAU1781
標(biāo)準(zhǔn)包裝: 1
系列: SigmaDSP®
主要目的: 音頻編解碼器
嵌入式: 是,DSP
已用 IC / 零件: ADAU1781
主要屬性: 立體聲,24 位,8 ~ 96 kHz 采樣率,GUI 工具
次要屬性: *
已供物品: *
ADAU1781
Rev. B| Page 31 of 92
ANALOG-TO-DIGITAL CONVERTERS
The ADAU1781 uses two 24-bit Σ-Δ analog-to-digital converters
(ADCs) with selectable oversampling rates of either 64× or 128×.
The full-scale input to the ADCs depends on AVDD1. At 3.3 V,
the full-scale input level is 1.0 V rms. Inputs greater than the
full-scale value result in clipping and distortion.
Digital ADC Volume Control
The ADC output (digital input) volume can be adjusted in
Register 16410 (0x401A), left ADC attenuator, Bits[7:0], left
ADC digital attenuator, for the left channel digital volume control
and in Register 16411 (0x401B), right ADC attenuator, Bits[7:0],
right ADC digital attenuator, for right channel digital volume
control.
High-Pass Filter
A high-pass filter is used in the ADC path to remove dc offsets
and can be selected in Register 16409 (0x4019), ADC control,
Bit 5, high-pass filter select, where it can be enabled or disabled.
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