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參數(shù)資料
| 型號： | ONET2501PARGTR |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | TOUCH SCREEN CAPACITIVE 12.31,1 |
| 中文描述： | 155 - Mbps到2.5 Gbps的限幅放大器 |
| 文件頁數(shù)： | 2/8頁 |
| 文件大?。?/td> | 187K |
| 代理商： | ONET2501PARGTR |
SLLS602A MARCH 2004 REVISED JULY 2004
2
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
block diagram
A simplified block diagram of the ONET2501PA is shown in Figure 1.
These compact, low power 2.5-Gbps limiting amplifiers consist of a high-speed data path with offset cancellation
block, a loss of signal and RSSI detection block, and a bandgap voltage reference and bias current generation
block.
The limiting amplifier requires a single 3.3-V supply voltage. All circuit parts are described in detail below.
+
Input Buffer
DOUT+
DOUT
DIN+
DIN
+
Gain Stage
+
+
+
COC2 COC1
DISABLE
LOS
TH
VCC
GND
OUTPOL
Bandgap Voltage
Reference and
Bias Current
Generation
Gain Stage
Gain Stage
Loss of Signal
and
RSSI Detection
Offset
Cancellation
VCCO
RSSI
CML
Output
Buffer
Figure 1. Block Diagram
high-speed data path
The high-speed data signal is applied to the data path by means of the input signal pins DIN+/DIN–. The data
path consists of the input stage with 2
×
50-
on-chip line termination to VCC, three gain stages, which provide
the required typical gain of about 50 dB, and a CML output stage. The amplified data output signal is available
at the output pins DOUT+/DOUT–, which provide 2
×
50-
back-termination to VCCO. The output stage also
includes a data polarity switching function, which is controlled by the OUTPOL input, and a disable function,
controlled by the signal applied to the DISABLE input pin.
An offset cancellation compensates inevitable internal offset voltages and thus ensures proper operation even
for very small input data signals.
The low frequency cutoff is as low as 45 kHz with the built-in filter capacitor.
For applications, which require even lower cutoff frequencies, an additional external filter capacitor may be
connected to the COC1/COC2 pins.
los of signal and RSSI detection
The output signal of the input buffer is monitored by the loss of signal and RSSI detection circuitry. In this block
a signal is generated, which is linear proportional to the input amplitude over a wide input voltage range. This
signal is available at the RSSI output pin.
Furthermore, this circuit block compares the input signal to a threshold, which can be programmed by means
of an external resistor connected to the TH pin. If the input signal falls below the specified threshold, a loss of
signal is indicated at the LOS pin.
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| ONET2501PARGTRG4 | 功能描述:特殊用途放大器 2.5 Gbps Limiting Amp RoHS:否 制造商:Texas Instruments 通道數(shù)量:Single 共模抑制比（最小值）: 輸入補償電壓: 工作電源電壓:3 V to 5.5 V 電源電流:5 mA 最大功率耗散: 最大工作溫度:+ 70 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-20 封裝:Reel |
| ONET2501PARGTT | 功能描述:限幅放大器 2.5 Gbps Limiting Amp RoHS:否 制造商:Micrel 輸入電壓范圍（最大值）:3.6 V 工作電源電壓:3.3 V 電源電流:40 mA 工作溫度范圍:- 40 C to + 85 C 封裝 / 箱體:MSOP-10 封裝:Tube |
| ONET2501PARGTTG4 | 功能描述:限幅放大器 2.5 Gbps Limiting Amp RoHS:否 制造商:Micrel 輸入電壓范圍（最大值）:3.6 V 工作電源電壓:3.3 V 電源電流:40 mA 工作溫度范圍:- 40 C to + 85 C 封裝 / 箱體:MSOP-10 封裝:Tube |
| ONET2511PA | 制造商:TI 制造商全稱:Texas Instruments 功能描述:155-mbps to 2.5-gbps Limiting amplifier |
| ONET2511PARGT | 功能描述:IC OPAMP LIMIT DIFF 45KHZ 16QFN RoHS:是 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 產(chǎn)品變化通告:Discontinuation 18/May/2012 標(biāo)準(zhǔn)包裝:2,000 系列:- 放大器類型:通用 電路數(shù):4 輸出類型:滿擺幅 轉(zhuǎn)換速率:0.42 V/µs 增益帶寬積:1.5MHz -3db帶寬:- 電流 - 輸入偏壓:15nA 電壓 - 輸入偏移:1000µV 電流 - 電源:116µA 電流 - 輸出 / 通道:100mA 電壓 - 電源，單路/雙路(±):1.8 V ~ 5 V，±0.9 V ~ 2.5 V 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:14-TSSOP（0.173"，4.40mm 寬） 供應(yīng)商設(shè)備封裝:14-TSSOP 包裝:帶卷 (TR) 產(chǎn)品目錄頁面:851 (CN2011-ZH PDF) 其它名稱:296-20930-2 |
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