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參數(shù)資料
| 型號(hào)： | U2762B |
| 英文描述： | 900-MHz ISM Band Receiver |
| 中文描述： | 900 - MHz的ISM頻段接收機(jī) |
| 文件頁(yè)數(shù)： | 2/9頁(yè) |
| 文件大?。?/td> | 201K |
| 代理商： | U2762B |
U2762B
Rev. A3, 10-Jun-98
Preliminary Information
2 (9)
Pin Description
1
2
3
4
5
6
7
8
10
9
27
22
21
20
18
19
17
12
11
28
25
26
23
24
Mix out
V
CC3
A2 in
A2 REF
Data out
Com Nin
A1 in
GND2
Com in
A1 REF
RSSI
NC
V
CC2
Lim1 in
Lim1 REF
Lim1 out
GND3
Lim2 in
GND1
A2 out
Lim2 REF
LO in
LO REF
V
CC1
16
15
14
13
13960
SL in
DEM out
DEM NTank
DEM Tank
Figure 2. Pinning
Pin
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Symbol
NC
RSSI
A1 REF
A1 in
GND2
Mix out
V
CC3
A2 in
A2 REF
Data out
Com Nin
Com in
SL in
DEM out
DEM Tank
Quadrature filter
DEM
NTank
Lim2 REF Limiter2 reference
Lim2 in
Limiter2 input
GND3
IF and AF Ground
Lim1 out
Limiter1 output
Lim1 REF Limiter1 reference
Lim1 in
Limiter1 input
V
CC2
IF power supply 1
A2 out
IF amplifier A2 output
GND1
RF ground
LO in
Local oscillator input
LO REF
Local oscillator reference
V
CC1
RF power supply
Function
Not connected
Signal-strength indicator
RF reference
RF input
IF ground
Mixer output
IF and AF power supply
IF amplifier A2 input
IF amplifier A2 reference
Data output
Comparator reference
Comparator input / slicer output
Slicer input
Demodulator output
Quadrature filter
17
18
19
20
21
22
23
24
25
26
27
28
Functional Description
RF Amplifier / Mixer
The RF amplifier / mixer
down-converts the antenna
signal to the IF frequency. It has asymmetrical RF and IF
ports. The LO input includes an amplifier for good sensi-
tivity and can be used in a symmetrical- as well as an
asymmetrical configuration.
IF Amplifier A2
An additional gain stage enables an application-specific
insertion point for IF filtering.
Limiter 1 / 2
The two-stage limiting amplifier is designed to be
directly coupled to low-cost 10.7-MHz ceramic IF filters
in front of each stage. The total dynamic range is 65 dB.
Demodulator
The quadrature demodulator in the receiving path
contains an internal 7-pF quadrature capacitor to couple
the IF signal to the external tank providing the 90-degree
phase shift. The tank may be either an LC-tank circuit or
an alignment-free discrete ceramic resonator.
Bit-Slicer Amplifier and Comparator
The bit-slicer limits the baseband signal. Furthermore it
eliminates the DC-offset by an AC-coupled lowpass filter
to the demodulator output. A second lowpass filter
recovers the exact comparator threshold value of the
bit-slicer’s output. The time constants of both lowpass
filters can be selected independently from each other to
optimize power-up timing.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| U2762B-BFS | 制造商:TEMIC 制造商全稱(chēng):TEMIC Semiconductors 功能描述:900-MHz ISM Band Receiver |
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| U2781A | 制造商:AGILENT TECHNOLOGIES, INC. 功能描述:USB MODULAR INSTRUMENT CHASSIS 制造商:Agilent Technologies 功能描述:CHASSIS DATA ACQUISITION 6-SLOT 制造商:Agilent Technologies 功能描述:USB MODULAR INSTRUMENT CHASSIS; No. of Channels:384; Input Voltage Max:240V; External Height:197mm; External Width:270mm; External Depth:271.2mm; Input Impedance:50ohm; Supply Voltage Max:240VAC; Supply Voltage Min:100VAC ;RoHS Compliant: NA 制造商:Agilent Technologies 功能描述:USB Modular Products Chassis |
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