PCM1870 datasheet(42/52 Pages) TI2

tên linh kiện	PCM1870

Giải thích chi tiết về linh kiện	16-Bit Low-Power Stereo Audio ADC With Microphone Bias and Microphone Amplifier

PDF	52 Pages

Scroll/Zoom	100%

nhà sản xuất	TI2 [Texas Instruments]

Trang chủ	https://www.ti.com

Logo

42 / 52 page

www.ti.com

S + Sampling frequency [Hz]

C + Center frequency [Hz]

1 + * 1 ) a2 cos

2pf

2 +

* tan

2pf

) tan

2pf

b + Bandwidth [Hz]

PCM1870

SLAS544A – MAY 2007 – REVISED SEPTEMBER 2007

Calculating Filter Coefficients

The PCM1870 provides a dual-stage notch filter at the digital output of the ADC. The filter characteristics of each

filter stage can be programmed. The characteristics are determined by calculating coefficients for three

parameters, sampling frequency, center frequency and bandwidth, as shown in the following equations. All

coefficients must be written as 2s-complement binary data into registers 97, 98, 99, 100, 101, 102, 103, and 104.

B15

B14

B13

B12

B11

B10

IDX6

IDX5

IDX4

IDX3

IDX2

IDX1

IDX0

RSV

G12R

G12L

IDX[6:0]: 111 1100b (7Ch) Register 124

G12R: 12-dB Boost for PG2 (Gain Amplifier for AIN1R and AIN2R)

G12L: 12-dB Boost for PG1 (Gain Amplifier for AIN1L and AIN2L)

Default value: 0

These bits are used to boost the microphone signal when the analog input is small. See Register 90 for the

detailed settings.

Submit Documentation Feedback

Product Folder Link(s): PCM1870

PCM1870 bảng dữ liệu(PDF) 42 Page - Texas Instruments

PCM1870 bảng dữ liệu(HTML) 42 Page - Texas Instruments

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52

bảng dữ liệu tải về

Link URL