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參數資料
| 型號： | U2270B |
| 英文描述： | Read / Write Base Station IC |
| 中文描述： | 讀/寫基站集成電路 |
| 文件頁數： | 3/13頁 |
| 文件大小： | 146K |
| 代理商： | U2270B |
U2270B
TELEFUNKEN Semiconductors
Rev. A3, 13-Dec-96
3 (13)
Functional Description
Power Supply (PS)
V
Batt
6 V
6 V
18 V
25 k
12 k
internal supply
V
S
9 V
PS
DRV
DV
S
Standby
COILx
DGND
11413
V
EXT
Figure 4. Equivalent circuit of power supply and antenna driver
The U2270 can be operated with one external supply
voltage or with two externally-stabilized supply voltages
for an extended driver output voltage or from the 12-V
battery voltage of a vehicle. The 12-V supply capability
is achieved via the on-chip power supply (see figure 4).
The power supply provides two different output voltages,
V
S
and V
EXT
.
V
S
is the internal power supply voltage except for the
driver circuit. Pin V
S
is used to connect a block capacitor.
V
S
can be switched off by the pin STANDBY. In standby
mode, the chip’s power consumption is very low. V
EXT
is
the supply voltage of the antenna’s pre-driver. This
voltage can also be used to operate external circuits, i.e.,
a microcontroller. In conjunction with an external NPN
transistor, it also establishes the supply voltage of the
antenna coil driver, DVS.
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相關代理商/技術參數 |
參數描述 |
|---|---|
| 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 其它有關文件:CR14 View All Specifications 標準包裝:1 系列:- RF 型:收發器 頻率:13.56MHz 特點:ISO14443-B 封裝/外殼:16-SOIC（0.154"，3.90mm 寬） 供應商設備封裝: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 其它有關文件:CR14 View All Specifications 標準包裝:1 系列:- RF 型:收發器 頻率:13.56MHz 特點:ISO14443-B 封裝/外殼:16-SOIC（0.154"，3.90mm 寬） 供應商設備封裝: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 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 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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