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參數(shù)資料
| 型號(hào)： | LT5554IUH#PBF |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 模擬信號(hào)調(diào)理 |
| 英文描述： | SPECIALTY ANALOG CIRCUIT, PQCC32 |
| 封裝： | 5 X 5 MM, LEAD FREE, PLASTIC, MO-220WHHD, QFN-32 |
| 文件頁數(shù)： | 14/32頁 |
| 文件大?。?/td> | 607K |
| 代理商： | LT5554IUH#PBF |
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LT5554
21
5554f
Gain Step Accuracy
LT5554 internal input signal coupling to the transcon-
ductance amplier inputs across the 4dB step attenuator
increases with frequency. The gain step error is higher
when the LT5554 gain update changes the input attenua-
tor tap (PG5, PG6 transitions) and this error is frequency
dependent.
Gain error is ‘compressive’, effectively reducing LT5554
gain range. Therefore, it is possible to skip one gain
APPLICATIONS INFORMATION
code whenever PG5, PG6 transitions are involved in or-
der to preserve high-frequency monotonic behavior for
0.125dB steps.
Linearity and Noise Performance Throughout the
Gain Range
The LT5554’s Noise and Linearity performance across
the 16dB gain range at 100MHz with ROUT = 100 and
RSADC = 50Ω is shown in Figures 10 through 13.
ATTENUATION (dB)
0
R
TI
AND
V
ONOISE
(nV
/√
Hz
)
12
6
9
3
0
NF
(dB)
24
18
12
6
0
–4
–8
–12
5554 F10
–16
RTI
NF
VONOISE
Figure 10. Noise, 140MHz, ROUT = 50Ω
ATTENUATION (dB)
0
–4
–8
–12
5554 F12
–16
IMD3
(dBc)
–70
–74
–78
–82
–86
OIP3
(dBm)
48
46
44
42
40
OIP3
Figure 12. Linearity, 70MHz, ROUT = 50Ω, 4dBm/Tone
ATTENUATION (dB)
0
–4
–8
–12
5554 F11
–16
IIP3
(dBc)
44
34
39
29
24
SFDR
(dBm/Hz)
136
132
128
124
120
SFDR
IIP3
Figure 11. Noise, 140MHz, ROUT = 50Ω
ATTENUATION (dB)
0
–4
–8
–12
5554 F12
–16
IMD3
(dBc)
–70
–74
–78
–82
–86
OIP3
(dBm)
48
46
44
42
40
OIP3
Figure 13. Linearity, 140MHz, ROUT = 50Ω, 4dBm/Tone
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| LT5554IUH-TRPBF | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Broadband Ultra Low Distortion 7-Bit Digitally Controlled VGA |
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| LT5557EUF#PBF | 功能描述:IC DOWNCONVERTING MIXER 16-QFN RoHS:是 類別:RF/IF 和 RFID >> RF 混頻器 系列:LT5557 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:100 系列:- RF 型:W-CDMA 頻率:2.11GHz ~ 2.17GHz 混頻器數(shù)目:1 增益:17dB 噪音數(shù)據(jù):2.2dB 次要屬性:- 電流 - 電源:11.7mA 電源電壓:2.7 V ~ 3.3 V 包裝:托盤 封裝/外殼:12-VFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:12-QFN-EP（3x3） |
| LT5557EUF#TRPBF | 功能描述:IC DOWNCONVERTING MIXER 16-QFN RoHS:是 類別:RF/IF 和 RFID >> RF 混頻器 系列:LT5557 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:100 系列:- RF 型:W-CDMA 頻率:2.11GHz ~ 2.17GHz 混頻器數(shù)目:1 增益:17dB 噪音數(shù)據(jù):2.2dB 次要屬性:- 電流 - 電源:11.7mA 電源電壓:2.7 V ~ 3.3 V 包裝:托盤 封裝/外殼:12-VFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝: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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