參數(shù)資料
型號(hào)： PCM3168ATPAPQ1
廠商： Texas Instruments
文件頁(yè)數(shù)： 14/68頁(yè)
文件大小： 0K
描述： IC 24-BIT AUDIO CODEC 64-HTQFP
標(biāo)準(zhǔn)包裝： 160
類型： 音頻編解碼器
數(shù)據(jù)接口： 串行
分辨率（位）： 24 b
ADC / DAC 數(shù)量： 6 / 8
三角積分調(diào)變： 是
S/N 比，標(biāo)準(zhǔn) ADC / DAC (db)： 107 / 112（差分），104 / 112（單端）
動(dòng)態(tài)范圍，標(biāo)準(zhǔn) ADC / DAC (db)： 107 / 112（差分），104 / 112（單端）
電壓 - 電源，模擬： 4.5 V ~ 5.5 V
電壓 - 電源，數(shù)字： 3 V ~ 3.6 V
工作溫度： -40°C ~ 85°C
安裝類型： 表面貼裝
封裝/外殼： 64-TQFP 裸露焊盤
供應(yīng)商設(shè)備封裝： 64-HTQFP（10x10）
包裝： 托盤
產(chǎn)品目錄頁(yè)面： 1077 (CN2011-ZH PDF)
其它名稱： 296-23900-5
0
20
40
60
80
100
120
140
160
180
200
-
2.0
Amplitude(dB)
NormalizedFrequency(f )
S
0
0.5
1.0
1.5
DSM_Dual
DSM_Single
DF_Single
DF_Dual
0
20
40
60
80
100
120
140
160
180
200
-
2.0
Amplitude(dB)
NormalizedFrequency(f )
S
0
0.5
1.0
1.5
DSM_Dual
DSM_Single
DSM_Quad
DF_Dual
DF_Single
DF_Quad
www.ti.com ......................................................................................................................................................................................... SBAS452 – SEPTEMBER 2008
oversampling frequency of x64; this mode is supported for sampling frequencies less than 100 kHz. In quad rate
mode, the DAC operates at an oversampling frequency of x32. The sampling mode is automatically selected
according to the ratio of system clock frequency and sampling frequency by default (for example, single rate for
512 fS and 768 fS, dual rate for 256 fS and 384 fS, and quad rate for 128 fS and 192 fS), but manual selection is
also possible for specified combinations through the serial mode control resistor.
Table 5 and Figure 31 show the relation between the oversampling rate (OSR) of the
ΔΣ modulator, noise-free
shaped bandwidth, and each sampling mode setting for ADC operation. Table 6 and Figure 32 describe the
relation between the oversampling rate of the digital filter and
ΔΣ modulator, noise-free shaped bandwidth, and
each sampling mode setting for DAC operation.
Table 5. ADC Modulator OSR and Noise-Free Shaped Bandwidthfor Each Sampling Mode
NOISE-FREE SHAPED BANDWIDTH (kHz)
SAMPLING MODE
SYSTEM CLOCK RATE
REGISTER SETTING
(fS)
fS = 48 kHz
fS = 96 kHz
MODULATOR OSR
512, 768
40
N/A
x128
Auto
256, 384
20
40
x64
512, 768
40
N/A
x128
Single
256, 384
40
N/A
x128
Dual
256, 384
20
40
x64
Table 6. DAC Digital Filter OSR, Modulator OSR, and Noise-Free Shaped Bandwidth
for Each Sampling Mode
NOISE-FREE SHAPED
BANDWIDTH
SAMPLING MODE
SYSTEM CLOCK
fS = 48
fS = 96
fS = 192
REGISTER SETTING
RATE (fS)
kHz
DIGITAL FILTER OSR
MODULATOR OSR
512, 768
40
N/A
x8
x128
Auto
256, 384
20
40
N/A
x8
x64
128, 192(1)(2)
10
20
40
x4
x32
512, 768
40
N/A
x8
x128
Single
256, 384
40
N/A
x8
x128
128, 192(1)(2)
20
N/A
x4
x64
256, 384
20
40
N/A
x8
x64
Dual
128, 192(1)(2)
20
40
N/A
x4
x64
Quad
128, 192(1)(2)
10
20
40
x4
x32
(1)
Supported only by DAC operation.
(2)
Quad mode filter characteristic is applied.
Figure 31. ADC
ΔΣ Modulator and Digital Filter
Figure 32. DAC
ΔΣ Modulator and Digital Filter
Characteristic
Copyright 2008, Texas Instruments Incorporated
21
Product Folder Link(s): PCM3168A PCM3168A-Q1
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