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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： | 6/10頁 |
| 文件大小： | 264K |
| 代理商： | U2740B |
U2740B
TELEFUNKEN Semiconductors
Rev. A3, 24-Feb-97
Preliminary Information
6 (10)
Electrical Characteristics AC
All voltages referred to GND (Pin 5), V
S
= 2.2 to 5.5 V, T
amb
= –40 to +85
°
C, unless otherwise specified
Parameters
Test Conditions / Pins
V
11
= 3 V
Symbol
20
(I
out,ON
I
out,off
)
Min.
Typ.
Max.
Unit
Extinction ratio
log
–40
–50
dB
Output current,
transmit mark,
(f
VCO
= 433.92 MHz)
3)
Output voltage swing
Phase detector
Output current
Phase detector
Output voltage swing
4)
Enable settling time
5)
Modulation bandwidth
6)
Output frequency range
XTO frequency range
Modulation bandwidth
V
11
= 3 V, V
16
= 0 V
Pins 13 and 14
i
out,pp
2.9
3.5
4.2
mA
Difference, Pins 13 and 14
v
(13–14)pp
4
5
V
Pin 7
I
PD
–1
1
mA
Pin 7
v
PDpp
0.2
V
S
–0.2
V
Pins 11, 13 and 14
T
enable
BW
FSK
f
VCO
f
XTO
BW
ASK
100
50
500
6
500
s
Pin 6
kHz
MHz
MHz
kHz
Pins 13 and 14
Pins 9 and 10
200
1
Pin 16
Notes:
3)
The output peak-to-peak current is 7 times the current flowing into the AM_in Pin. The driver stage of the
power amplifier is designed so that the output current is switched between Pins 13 and 14.
4)
The output voltage swing at each collector is limited to 2 V due to the circuit arrangement used. The output
power depends on the load impedance. If optimum load impedance of 1.1 k is used, an output power of
3.5 mA/2
sqrt(2)
1.1 k = 1.7 mW (+2.3 dBm) results.
5)
This is the time if an external clock is delivered to Pin 9 and Pin 11 is set to V
S
until the circuit operates.
6)
FSK bandwidth is depending on values for loop filter and VCO, see application note for design hints.
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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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