- 您現在的位置：買賣IC網 > PDF目錄98302 > TSC2100IRHB (TEXAS INSTRUMENTS INC) SPECIALTY CONSUMER CIRCUIT, PQCC32 PDF資料下載
參數資料
| 型號： | TSC2100IRHB |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 消費家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PQCC32 |
| 封裝： | 5 X 5 MM, GREEN, PLASTIC, QFN-32 |
| 文件頁數： | 26/77頁 |
| 文件大小： | 1079K |
| 代理商： | TSC2100IRHB |
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頁當前第26頁第27頁第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
TSC2100
SLAS378 NOVEMBER 2003
www.ti.com
32
AUDIO OUTPUT DRIVERS
The TSC2100 features audio output drivers which can be configured in either low power mode or high power mode
depending on the load and output power required. By default, at reset the output drivers are configured in low power mode.
In this mode, the output drivers can drive a full-scale line-level signal into loads of 10 k minimum or drive moderate
amplitude signals into loads of 16 minimum.
The output drivers can also be configured in high power mode by setting bit D12 of Reg05H/Page2 to 1. In this mode, each
output driver can deliver up to 30 mW per channel into a headphone speaker load of 16 . The headphones can be
connected in a single ended configuration using ac-coupling capacitors, or the capacitors can be removed and virtual
ground (VGND) powered for a capless output connection. The typical headphone jack configuration for these two modes
is shown in Figure 30. Note that the VGND amplifier must be powered if the capless configuration is used.
In the case of an ac-coupled output, the value of the capacitors is typically chosen based on the amount of low-frequency
cut that can be tolerated. The capacitor in series with the load impedance forms a high-pass filter with 3 dB cutoff frequency
of 1/(2πRC) in Hz, where R is the impedance of the headphones. Use of an overly small capacitor reduces low-frequency
components in the signal output and lead to low-quality audio. When driving 16- headphones, capacitors of 220-F (a
commonly used value) result in a high-pass filter cutoff frequency of 45 Hz, although reducing these capacitors to 50 F
results in a cutoff frequency of 199 Hz, which is generally considered noticeable when playing music. The cutoff frequency
is reduced to half of the above values if 32- headphones are used instead of 16 .
The TSC2100 programmable digital effects block can be used to help reduce the size of capacitors needed by implementing
a low frequency boost function to help compensate for the high-pass filter introduced by the ac-coupling capacitors. For
example, by using 50-F capacitors and setting the TSC2100 programmable filter coefficients as shown below, the
frequency response can be improved as shown in Figure 29.
Filter coefficients (use the same for both channels):
N0 = 32767, N1 = 32346, N2 = 31925, N3 = 32767, N4 = 0, N5 = 0
D0 = 32738, D1 = 32708 D4 = 0, D5 = 0
10
12
16
20
0 100 200 300 400 500 600
Gain
dB
6
4
f Frequency Hz
0
700 800 900 1 k
18
14
8
2
Figure 28. Uncompensated Response For 16-W Load and 50-mF Decoupling Capacitor
相關PDF資料 |
PDF描述 |
|---|---|
| TSC2100IDAG4 | SPECIALTY CONSUMER CIRCUIT, PDSO32 |
| TSC2100IRHBG4 | SPECIALTY CONSUMER CIRCUIT, PQCC32 |
| TSC2100IRHBRG4 | SPECIALTY CONSUMER CIRCUIT, PQCC32 |
| TSC2101IRGZR | SPECIALTY CONSUMER CIRCUIT, PQCC48 |
| TSC2101IRGZ | SPECIALTY CONSUMER CIRCUIT, PQCC48 |
相關代理商/技術參數 |
參數描述 |
|---|---|
| TSC2100IRHBG4 | 功能描述:觸摸屏轉換器和控制器 Prog 4-Wire w/Ster Codec & Hdph/Spk Amp RoHS:否 制造商:Microchip Technology 類型:Resistive Touch Controllers 輸入類型:3 Key 數據速率:140 SPS 分辨率:10 bit 接口類型:4-Wire, 5-Wire, 8-Wire, I2C, SPI 電源電壓:2.5 V to 5.25 V 電源電流:17 mA 工作溫度:- 40 C to + 85 C 封裝 / 箱體:SSOP-20 |
| TSC2100IRHBR | 功能描述:觸摸屏轉換器和控制器 Prog 4-Wire w/Ster Codec & Hdph/Spk Amp RoHS:否 制造商:Microchip Technology 類型:Resistive Touch Controllers 輸入類型:3 Key 數據速率:140 SPS 分辨率:10 bit 接口類型:4-Wire, 5-Wire, 8-Wire, I2C, SPI 電源電壓:2.5 V to 5.25 V 電源電流:17 mA 工作溫度:- 40 C to + 85 C 封裝 / 箱體:SSOP-20 |
| TSC2100IRHBRG4 | 功能描述:觸摸屏轉換器和控制器 Prog 4-Wire w/Ster Codec & Hdph/Spk Amp RoHS:否 制造商:Microchip Technology 類型:Resistive Touch Controllers 輸入類型:3 Key 數據速率:140 SPS 分辨率:10 bit 接口類型:4-Wire, 5-Wire, 8-Wire, I2C, SPI 電源電壓:2.5 V to 5.25 V 電源電流:17 mA 工作溫度:- 40 C to + 85 C 封裝 / 箱體:SSOP-20 |
| TSC2100IRHBRMULT1 | 制造商:Texas Instruments 功能描述: |
| TSC2101 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:AUDIO CODEC WITH INTERATED HEADPHONE SPEAKER AMPLIFIER AND TOUCH SCREEN CONTROLLER |
發布緊急采購，3分鐘左右您將得到回復。