参数资料
| 型号： | LT5554IUH#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 18/32页 |
| 文件大小： | 0K |
| 描述： | IC VGA DIG CONTROL 32-QFN |
| 标准包装： | 73 |
| 应用： | 可变增益（VGA） |
| 电路数： | 1 |
| -3db带宽： | 1GHz |
| 电流 - 电源： | 200mA |
| 电压 - 电源，单路/双路(±)： | 4.75 V ~ 5.25 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 32-WFQFN 裸露焊盘 |
| 供应商设备封装： | 32-QFN 裸露焊盘（5x5） |
| 包装： | 管件 |
| 产品目录页面： | 1322 (CN2011-ZH PDF) |
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LT5554
25
5554f
APPLICATIONS INFORMATION
Figure 18. Wideband Differential Output Test Board (Simplied Schematic)
Common mode characterization for the LT5554 was per-
formed with input circuit shown in Figure 19.
Figure 19. Common Mode Input Interface
source is applied at J6 connector and 50Ω terminated by
R16 and R33 resistors. C66 decouple R33 to ground while
C16 provides DC-decoupling between referenced to ground
pulse source and the PG6 DC-voltage. A supply connected
to PG6 turret will set the PG6 DC-voltage in 0V to 5V range.
All other (untested) PGx DC-voltage can be independently
be applied at VPG turret decoupled by C88.
Strobe-mode operation is tested with a pulse source ap-
plied at J7 connector as shown in Figure 20.
Applying similar modications around J2 and J4 connec-
tors shown in Figure 21, other PGx inputs can be evaluated.
As described in Table 1 and Table 2, the MODE pin will
select the desired state.
J3
50
J33
50
IN+
IN–
J1
50
C5
1μF
LT5554
1, 3, 5, 7
9
5554 F18
OUT+
OUT–
C9
0.1μF
C3
0.1μF
R6
66.5Ω
RO
400Ω
RIN
50Ω
RO
400Ω
RLOAD
57Ω
100Ω
MATCHING
C18
0.1μF
C19
4.7μF
C8
0.1μF
C4
0.1μF
11
VCC VDEC
ENB
13
PG0
15
PG1
17
PG2
19
PG3
21
PG4
23
PG5
25
PG6
27
STROBE
29
VPG
31
MODE
33, 35, 37, 38
2, 4, ...40
J5, 40 PINS
SMT-TB
VCCO
R20
10k
PG1
R21
10k
PG2
R22
10k
PG3
R23
10k
PG4
R24
10k
PG5
R25
10k
PG6
R26
10k
ROUT = 50Ω
R5
66.5Ω
C10
47nF
C12
47nF
VCC = 5V
VCCO = 8V
ENB = 5V
T1
1:1
ETC1-1-13
MACOM
CDEC
47nF
LT5554
DEC
IN+
IN–
+
–
OUT+
OUT–
25Ω
C1
47nF
J1
50
5554 F19
Timing characterization and AC-coupled gain control inputs
are tested on evaluation board. The required circuit modi-
cations are shown in the Figure 20 simplied schematic
and detailed below for PG6 (8dB step). The PG6 pulse
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LT5554IUH-TRPBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:Broadband Ultra Low Distortion 7-Bit Digitally Controlled VGA |
| LT5557 | 制造商:LINER 制造商全称:Linear Technology 功能描述:4GHz to 6GHz High Dynamic Range Downconverting Mixer |
| LT5557EUF#PBF | 功能描述:IC DOWNCONVERTING MIXER 16-QFN RoHS:是 类别:RF/IF 和 RFID >> RF 混频器 系列:LT5557 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:100 系列:- RF 型:W-CDMA 频率:2.11GHz ~ 2.17GHz 混频器数目:1 增益:17dB 噪音数据:2.2dB 次要属性:- 电流 - 电源:11.7mA 电源电压:2.7 V ~ 3.3 V 包装:托盘 封装/外壳:12-VFQFN 裸露焊盘 供应商设备封装:12-QFN-EP（3x3） |
| LT5557EUF#TRPBF | 功能描述:IC DOWNCONVERTING MIXER 16-QFN RoHS:是 类别:RF/IF 和 RFID >> RF 混频器 系列:LT5557 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:100 系列:- RF 型:W-CDMA 频率:2.11GHz ~ 2.17GHz 混频器数目:1 增益:17dB 噪音数据:2.2dB 次要属性:- 电流 - 电源:11.7mA 电源电压:2.7 V ~ 3.3 V 包装:托盘 封装/外壳:12-VFQFN 裸露焊盘 供应商设备封装:12-QFN-EP（3x3） |
| LT5557EUFPBF | 制造商:Linear Technology 功能描述:0.4-3.8GHz 3.3V Active Down Mixer QFN16 |
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