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參數資料
| 型號： | SPD1103-111 |
| 廠商： | Alpha Industries, Inc. |
| 英文描述： | Sampling Phase Detectors |
| 中文描述： | 取樣相位檢測器 |
| 文件頁數： | 1/2頁 |
| 文件大小： | 450K |
| 代理商： | SPD1103-111 |
Alpha Industries, Inc.
[781] 935-5150
Fax
[978] 241-7906
Email
sales@alphaind.com
www.alphaind.com
Specifications subject to change without notice. 9/01A
1
Sampling Phase Detectors
Features
I
For Phase Locked VCOs to 22 GHz
I
Reference Frequencies Below 50 MHz
I
New Surface Mount Package Design
I
Small Footprint (90 x 110 Mils)
I
Automated Chip on Board Construction
SPD1101-111, SPD1102-111, SPD1103-111
Characteristic
Value
Incident Power
27 dBm
Operating Temperature
-65 to +150°C
Storage Temperature
-65 to +175°C
ESD Human Body Model
Class 1B
Absolute Maximum Ratings
Electrical Characteristics at 25°C
Microwave Signal
Drive Level
(dBm)
Typ.
-3 to 0
0 to +3
0 to +13
Schottky Diode
V
F
@ 1 mA
(mV)
Capacitor
C
C
(pF)
Typ.
0.5
0.5
0.5
Step Recovery Diode
C
J
@ 6 V
(pF)
Max.
0.25
0.25
0.25
Part Number
Barrier
C
J
@ 0 V
(pF)
Max.
0.10
0.10
0.10
R
T
@ 5 mA
(
)
Max.
24
24
24
T
L
(nS)
Typ.
10
10
10
TT
(pS)
Typ.
70
70
70
SPD1101-111
SPD1102-111
SPD1103-111
Low
Medium
High
270–350
370–550
600–700
Description
Alpha has redesigned its product line of sampling phase
detectors using automated chip on board manufacturing
technology to provide a more uniform, surface mountable,
small footprint device without sacrificing the microwave
performance of the original design.
Sampling phase detectors are used to phase lock a
microwave VCO to a stable reference source at a
submultiple frequency. The sampling phase detector
consists of a step recovery diode, capacitors and a
microwave mixer consisting of series pair Schottky
diodes. The principle of operation may be described as
using the step recovery diode to generate a harmonic comb
of the reference oscillator frequency and the Schottky diode
as a mixer between the closest reference frequency multiple
and the microwave signal generated by the VCO. When
these frequencies are identical the IF (beat note) signal is
a DC voltage; the IF will be sinusoidal when the
frequencies are unequal.
The SPD1100 series sampling phase detectors use a
selected step recovery diode chip whose carrier lifetime and
transition time are appropriate for use in applications
allowing reference frequencies below 50 MHz and
microwave VCO frequencies as high as 22 GHz. The
Schottky diodes used are low capacitance devices
capable of efficient mixer performance at frequencies above
22 GHz. The SPD1101-111, SPD1102-111 and
SPD1103-111 utilize low, medium and high barrier
Schottky diodes and may be selected according to the
available power generated by the microwave VCO.
Preliminary
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