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| 型號(hào)： | U2270B |
| 英文描述： | Read / Write Base Station IC |
| 中文描述： | 讀/寫基站集成電路 |
| 文件頁(yè)數(shù)： | 6/13頁(yè) |
| 文件大小： | 146K |
| 代理商： | U2270B |
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U2270B
TELEFUNKEN Semiconductors
Rev. A3, 13-Dec-96
6 (13)
Schmitt Trigger
The signal is processed by a Schmitt trigger to suppress
possible noise and to make the signal C compatible. The
hysteresis level is 100 mV symmetrically to the dc opera-
tion point. The open-collector output is enabled by a low
level at OE (Pin 3).
12602
7 A
OE
Figure 11. Equivalent circuit of Pin OE
Driver (DRV)
The driver supplies the antenna coil with the appropriate
energy. The circuit consists of two independant output
stages. These output stages can be operated in two
different modes. In common mode, the outputs of the
stages are in phase. In this mode, the outputs can be
interconnected, to achieve a high current output
capability. Using the differential mode, the output
voltages are in anti-phase. Thus, the antenna coil is driven
with a higher voltage. For a specific magnetic field, the
antenna coil impedance is higher for the differential
mode. As a higher coil impedance results in a better
system sensitivity, the differential mode should be
preferred.
The CFE input is intended to be used for writing data into
a read/write or a crypto transponder. This is achieved by
interrupting the RF field with short gaps. The TEMIC
write method is described in the data sheets of TK5550
and TK5560. The various functions are controlled by the
inputs MS and CFE, refer to function table. The
equivalent circuit of the driver is shown in figure 4.
12603
30 A
MS
Figure 12. Equivalent circuit of Pin MS
12604
30 A
CFE
Figure 13. Equivalent circuit of Pin CFE
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| U2270B_08 | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:Read/Write Base Station |
| U2270B-MFP | 功能描述:IC RFID BASEREADER 125KHZ 16SOIC RoHS:否 類別:RF/IF 和 RFID >> RFID IC 系列:U2270B 其它有關(guān)文件:CR14 View All Specifications 標(biāo)準(zhǔn)包裝:1 系列:- RF 型:收發(fā)器 頻率:13.56MHz 特點(diǎn):ISO14443-B 封裝/外殼:16-SOIC（0.154"，3.90mm 寬） 供應(yīng)商設(shè)備封裝:16-SO 包裝:Digi-Reel® 其它名稱:497-5719-6 |
| U2270B-MFPG3 | 功能描述:IC BASEREADER RFID 125KHZ 16SOIC RoHS:是 類別:RF/IF 和 RFID >> RFID IC 系列:U2270B 其它有關(guān)文件:CR14 View All Specifications 標(biāo)準(zhǔn)包裝:1 系列:- RF 型:收發(fā)器 頻率:13.56MHz 特點(diǎn):ISO14443-B 封裝/外殼:16-SOIC（0.154"，3.90mm 寬） 供應(yīng)商設(shè)備封裝:16-SO 包裝:Digi-Reel® 其它名稱:497-5719-6 |
| U2270B-MFPG3Y | 功能描述:射頻無線雜項(xiàng) Base Station RoHS:否 制造商:Texas Instruments 工作頻率:112 kHz to 205 kHz 電源電壓-最大:3.6 V 電源電壓-最小:3 V 電源電流:8 mA 最大功率耗散: 工作溫度范圍:- 40 C to + 110 C 封裝 / 箱體:VQFN-48 封裝:Reel |
| U2270B-MFPY | 功能描述:射頻無線雜項(xiàng) Base Station RoHS:否 制造商:Texas Instruments 工作頻率:112 kHz to 205 kHz 電源電壓-最大:3.6 V 電源電壓-最小:3 V 電源電流:8 mA 最大功率耗散: 工作溫度范圍:- 40 C to + 110 C 封裝 / 箱體:VQFN-48 封裝:Reel |
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