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參數資料
| 型號： | U2740B |
| 英文描述： | UHF AM/FM Transmitter |
| 中文描述： | 超高頻調幅/調頻發射機 |
| 文件頁數： | 1/10頁 |
| 文件大小： | 264K |
| 代理商： | U2740B |
U2740B
Preliminary Information
TELEFUNKEN Semiconductors
Rev. A3, 24-Feb-97
1 (10)
UHF AM/FM Transmitter
Description
The U2740B-B is an one-chip multi-purpose UHF
ASK/FSK transmitter IC designed for various applica-
tions within a wide frequency range. When a
C
hip-
S
elect
(CS) signal is supplied, the IC starts operation (Power-up,
XTO, VCO, PD) and the VCO is then locked to
128
f(XTO). The locked status is indicated at the
L
ock-
D
etect (LD) output.
The digital data is supplied to either an AM- or FM-input
pin, the output power being set via the AM-input pin. A
differential output enables simple applications with loop
antennas. An output driver (XTO_out) can be used for
clocking the microcontrolller.
Features
One-chip solution with few external components
Wide frequency range (200 to 500 MHz)
Single voltage supply (2.2 to 5.5 V) with power-down
feature
Adjustable output power with differential output for
loop antenna
PLL lock-detect signal
XTO output for
μ
C clock
ESD protection according to MIL–STD. 883
(except Pins 1, 2, 13 and 14)
Low standby current <0.25 A for V
S
= 3 V
Single lithium-cell operation
Applications
Keyless entry (automotive, domestic,...)
Alarm systems
Remote control
Communication systems
Ordering Information
Extended Type Number
U2740B-BFP
Package
SO16
Remarks
System Block Diagram
PLL
Encoder
M44Cx9x
Power
ampl.
VCO
XTO
1 Li cell
Keys
13350
U2740B
RF–Transmitter
Antenna
Figure 1. System block diagram
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| U2740B-BFP | UHF AM/FM Transmitter |
| U2760B | CT2-RX/TX IC |
| U2760B-AFS | CT2-RX/TX IC |
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相關代理商/技術參數 |
參數描述 |
|---|---|
| U2740B-BFP | 制造商:TEMIC 制造商全稱:TEMIC Semiconductors 功能描述:UHF AM/FM Transmitter |
| U2741A | 制造商:AGILENT TECHNOLOGIES, INC. 功能描述:USM MODULAR DIGITAL MULTIMETER, 5 1/2 DIGIT 制造商:Agilent Technologies 功能描述:U2741A 5 1/2 Digit Benchtop DMM 制造商:Agilent Technologies 功能描述:MULTIMETER, DIGITAL, BENCH, 5-1/2 DIGIT; DMM Type:Bench; Voltage Measuring Range DC:100mV to 300V; Voltage Measuring Range AC:100mV to 250V; Current Measuring Range DC:10mA to 2A; Current Measuring Range AC:10mA to 2A ;RoHS Compliant: NA |
| U2741AOPT900+PLG | 制造商:Agilent Technologies 功能描述:U2741A Multimeter, USB module |
| U2741B | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:UHF ASK/FSK TRANSMITTER |
| U2741B_05 | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:UHF ASK/FSK TRANSMITTER |
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