- 您現在的位置：買賣IC網 > PDF目錄98255 > TLV320DAC3120IRHBR (TEXAS INSTRUMENTS INC) SERIAL INPUT LOADING, 24-BIT DAC, PQCC32 PDF資料下載
參數資料
| 型號： | TLV320DAC3120IRHBR |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | DAC |
| 英文描述： | SERIAL INPUT LOADING, 24-BIT DAC, PQCC32 |
| 封裝： | 5 X 5 MM, PLASTIC, QFN-32 |
| 文件頁數： | 28/110頁 |
| 文件大小： | 1230K |
| 代理商： | TLV320DAC3120IRHBR |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁當前第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁第67頁第68頁第69頁第70頁第71頁第72頁第73頁第74頁第75頁第76頁第77頁第78頁第79頁第80頁第81頁第82頁第83頁第84頁第85頁第86頁第87頁第88頁第89頁第90頁第91頁第92頁第93頁第94頁第95頁第96頁第97頁第98頁第99頁第100頁第101頁第102頁第103頁第104頁第105頁第106頁第107頁第108頁第109頁第110頁
LargestPositiveNumber:
=0.111 1111 1111 111
=0.999969482421875=1.0 – 1LSB
1
LargestNegativeNumber:
=1.0000 0000 0000 000
=0x8000= –1.0(bydefinition)
1
S.xxxx xxxx xxxx xxx
..
x
SignBit
2
Bit
–1
2
Bit
–4
2
Bit
–15
Fraction
Point
SLAS659 – NOVEMBER 2009
www.ti.com
5.6.1.3
DAC User-Programmable Filters
Depending on the selected processing block, different types and orders of digital filtering are available. Up
to six biquad sections are available for specific processing blocks.
The coefficients of the available filters are arranged as sequentially-indexed coefficients in two banks. If
adaptive filtering is chosen, the coefficient banks can be switched in real time.
When the DAC is running, the user-programmable filter coefficients are locked and cannot be accessed
for either read or write.
However, the TLV320DAC3120 offers an adaptive filter mode as well. Setting page 8 / register 1,
bit D2 = 1 turns on double buffering of the coefficients. In this mode, filter coefficients can be updated
through the host and activated without stopping and restarting the DAC. This enables advanced adaptive
filtering applications.
In the double-buffering scheme, all coefficients are stored in two buffers (buffers A and B). When the DAC
is running and adaptive filtering mode is turned on, setting page 8 / register 1, bit D0 = 1 switches the
coefficient buffers at the next start of a sampling period. This bit is set back to 0 after the switch occurs. At
the same time, page 8 / register 1, bit D1 toggles.
The flag in page 8 / register 1, bit D1 indicates which of the two buffers is actually in use.
Page 8 / register 1, bit D1 = 0: buffer A is in use by the DAC engine; bit D1 = 1: buffer B is in use.
While the device is running, coefficient updates are always made to the buffer not in use by the DAC,
regardless of the buffer to which the coefficients have been written.
Table 5-7. Adaptive-Mode Filter-Coefficient Buffer Switching
Coefficient Buffer in
DAC Powered Up
Page 8, Reg 1, Bit D1
I2C Writes to
Updates
Use
No
0
None
Page 8, Reg 2–3, buffer A
No
0
None
Page 12, Reg 2–3, buffer
Page 12, Reg 2–3, buffer B
B
Yes
0
Buffer A
Page 8, Reg 2–3, buffer A
Page 12, Reg 2–3, buffer B
Yes
0
Buffer A
Page 12, Reg 2–3, buffer
Page 12, Reg 2–3, buffer B
B
Yes
1
Buffer B
Page 8, Reg 2–3, buffer A
Yes
1
Buffer B
Page 12, Reg 2–3, buffer
Page 8, Reg 2–3, buffer A
B
The user-programmable coefficients for the DAC processing blocks are defined on pages 8 and 9 for
buffer A and pages 12 and 13 for buffer B.
The coefficients of these filters are each 16-bit, 2s-complement format, occupying two consecutive 8-bit
registers in the register space. Specifically, the filter coefficients are in 1.15 (one dot 15) format with a
range from –1.0 (0x8000) to 0.999969482421875 (0x7FFF) as shown in Figure 5-10.
Figure 5-10.
24
APPLICATION INFORMATION
Copyright 2009, Texas Instruments Incorporated
Product Folder Link(s): TLV320DAC3120
相關PDF資料 |
PDF描述 |
|---|---|
| TLV320DAC3120IRHBT | SERIAL INPUT LOADING, 24-BIT DAC, PQCC32 |
| TLV320DAC3202IYZJR | VOLUME CONTROL CIRCUIT, PBGA20 |
| TLV320DAC3202IYZJT | VOLUME CONTROL CIRCUIT, PBGA20 |
| TLV320DAC32IRHBR | SERIAL INPUT LOADING, DAC WITH PROGRAMMABLE PLL, PQCC32 |
| TLV320DAC32IRHBTG4 | SERIAL INPUT LOADING, DAC WITH PROGRAMMABLE PLL, PQCC32 |
相關代理商/技術參數 |
參數描述 |
|---|---|
| TLV320DAC3120IRHBT | 功能描述:音頻數/模轉換器 IC Lo-Pwr Audio DAC w/ Audio Proc RoHS:否 制造商:Texas Instruments 轉換器數量: 分辨率:16 bit 接口類型:I2S, UBS 轉換速率: 信噪比:98 dB 工作電源電壓:5 V DAC 輸出端數量:2 工作溫度范圍:- 25 C to + 85 C 電源電流:23 mA 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-32 封裝:Reel |
| TLV320DAC3120IRHBT | 制造商:Texas Instruments 功能描述:D/A Converter (D-A) IC 制造商:Texas Instruments 功能描述:IC, DAC, 32BIT, 192KSPS, QFN-32 |
| TLV320DAC32 | 制造商:BB 制造商全稱:BB 功能描述:LOW POWER STEREO AUDIO DAC FOR PORTABLE AUDIO/TELEPHONY |
| TLV320DAC3202 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:LOW POWER HIGH FIDELITY I2S INPUT HEADSET IC |
| TLV320DAC3202BYZJR | 功能描述:音頻數/模轉換器 IC Lo Pwr Hi Fidelity I2S Input Headset IC RoHS:否 制造商:Texas Instruments 轉換器數量: 分辨率:16 bit 接口類型:I2S, UBS 轉換速率: 信噪比:98 dB 工作電源電壓:5 V DAC 輸出端數量:2 工作溫度范圍:- 25 C to + 85 C 電源電流:23 mA 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-32 封裝:Reel |
發布緊急采購，3分鐘左右您將得到回復。