参数资料
| 型号： | LT5554IUH#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 30/32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
7
5554f
FREQUENCY (MHz)
0
GAIN
(dB)
20
18
16
12
8
4
14
10
6
2
0
500
900
300
700
5554 G01
1000
400
800
200
600
100
Note 5: RTI (Referred-To-Input) stands for the total input-referred noise
voltage source. RTI is close to output noise voltage divided by voltage gain
(the exact equation is given in Denition of Specication section). The
equivalent noise source eN is twice the RTI value.
Note 6: The external loading at LT5554 OUT+/OUT– pins is RLOAD = 57Ω.
ROUT = RLOAD || RO = 50Ω.
Note 7: The IN+, IN–, DEC pins are internally biased. The time-constant
of input coupling capacitor sets the low frequency corner (LF) at input.
The output coupling capacitors or the transformer sets the low frequency
corner (LF) at the output. The LT5554 operates internally down to DC.
Note 8: The external loading at OUT+/OUT– pins is RLOAD = 133Ω.
ROUT = RLOAD || RO = 100Ω.
Note 9: Depending on the actual input matching conditions and frequency
of operation, the LT5554 steps involving the input attenuator tap change
may show less than 0.125dB change. These steps are GMAX –4dB, GMAX
–8dB, GMAX –12dB, and the code is given in the Programmable Gain Table.
The LT5554 monotonic operation for 0.125dB step resolution can still be
obtained by skipping any such code with a gain error excedding 0.125dB.
TYPICAL PERFORMANCE CHARACTERISTICS
Gain vs Frequency for
0.5dB Steps, Figure 17
Differential Gain Error vs
Frequency at –40°C
Differential Gain Error vs
Frequency at 85°C
ELECTRICAL CHARACTERISTICS
(ROUT = 50Ω) TA = 25°C. VCC = 5V, VCCO = 5V,
ENB = 3V, MODE = 5V, STROBE = 3V, VIH = 2.2V, VIL = 0.6V (Test circuit shown in Figure 16), unless otherwise noted.
FREQUENCY (MHz)
50
GAIN
ERROR
(dB)
0.3
0.2
0.1
0
–0.1
–0.2
5554 G02
200
125
175
100
150
75
12dB
4dB
8dB
FREQUENCY (MHz)
50
GAIN
ERROR
(dB)
0.3
0.2
0.1
0
–0.1
–0.2
5554 G03
200
125
175
100
150
75
12dB
4dB
8dB
Differential Gain Error vs
Attenuation at 50MHz
Differential Gain Error vs
Attenuation at 100MHz
Differential Gain Error vs
Attenuation at 200MHz
ATTENUATION (dB)
0
GAIN
ERROR
(dB)
0.3
0.2
0.1
0
–0.1
–0.2
5554 G04
–16
–4
–12
–8
–40°C
25°C
85°C
ATTENUATION (dB)
0
GAIN
ERROR
(dB)
0.3
0.2
0.1
0
–0.1
–0.2
5554 G05
–16
–4
–12
–8
–40°C
25°C
85°C
ATTENUATION (dB)
0
GAIN
ERROR
(dB)
0.3
0.2
0.1
0
–0.1
–0.2
5554 G06
–16
–4
–12
–8
–40°C
25°C
85°C
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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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