- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄377724 > LT5512 (Linear Technology Corporation) 1kHz-3GHz High Signal Level Down-Converting Mixer PDF資料下載
參數(shù)資料
| 型號： | LT5512 |
| 廠商： | Linear Technology Corporation |
| 英文描述： | 1kHz-3GHz High Signal Level Down-Converting Mixer |
| 中文描述： | 1kHz時，3GHz的高信號電平下變頻混頻器 |
| 文件頁數(shù)： | 10/12頁 |
| 文件大?。?/td> | 267K |
| 代理商： | LT5512 |
LT5512
10
5512f
IF Output Port
The IF outputs, IF
+
and IF
–
, are internally connected to the
collectors of the mixer switching transistors as shown in
Figure 9. These differential outputs should be combined
externally through an RF balun or 180
°
hybrid to achieve
optimum performance. Both pins must be biased at the
supply voltage, which can be applied through matching
inductors (see Figure 2), or through the center-tap of an
output transformer (see Figure 3). These pins are pro-
tected with ESD diodes; the diodes allow peak AC signal
swing up to 1.3V above V
CC
.
As shown in Table 3, the IF output differential impedance
is approximately 390
in parallel with 0.44pF. A simple
band-pass IF matching network suitable for wireless ap-
plications is shown in Figure 9. Here, L1, L2 and C8 set the
desired IF output frequency. The 390
differential output
can then be applied directly to a differential filter, or an 8:1
balun for impedance transformation down to 50
. To
achieve maximum linearity, C8 should be located as close
as possible to the IF+/IF– pins. Even small amounts of
inductance in series with C8 (such as through a via) can
significantly degrade IIP3. For high IF frequencies, the
value of C8 should be reduced by the value of internal
capacitance (see Table3).This matching network is simple
and offers good selectivity for narrow band IF applica-
tions.
Figure 9. IF Output Equivalent Circuit
with Band-Pass Matching Elements
APPLICATIOU
W
U
U
Table 3. IF Output Differential Impedance (Parallel Equivalent)
Frequency
Differential Output
(MHz)
Impedance
10
396 || – j10k
70
394 || – j5445
170
393 || – j2112
240
392 || – j1507
450
387 || – j798
750
377 || – j478
860
371 || – j416
1000
363 || – j359
1250
363 || – j295
1500
346 || – j244
1900
317 || – j192
Differential S11
Mag
0.766
0.775
0.774
0.773
0.772
0.768
0.766
0.762
0.764
0.756
0.743
Angle
0
–1.1
–2.8
–3.9
–7.3
–12.2
–14.0
–16.2
–19.6
–23.6
–29.9
11
10
400
C8
L1
L2
V
CC
IF
+
IF
–
TO
DIFFERENTIAL
FILTER OR
BALUN
5512 F09
LT5512
Figure 8. Single-Ended LO Port Return Loss
vs Frequency for Various Values of L3
FREQUENCY (MHz)
R
1573 F08
0
–5
–10
–15
–20
–25
–300
1000
2000 2500
500
1500
3000 3500 4000
4.7nH
5.6nH
6.8nH
8.2nH
10nH
An alternative matching network for a broadband CATV IF
(270MHz to 870MHz) is shown in Figure 3. Here, a low-
pass impedance transformer consisting of the internal
capacitance, with L1 and L2, transforms the 371
output
resistance at 870MHz to 200
. A 4:1 balun then com-
pletes the match down to 50
. Supply voltage is applied
through the center-tap of the transformer.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LT5514 | Ultralow Distortion IF Amplifier/ADC Driver with Digitally Controlled Gain |
| LT5514EFE | Ultralow Distortion IF Amplifier/ADC Driver with Digitally Controlled Gain |
| LT5521EUF | Very High Linearity Active Mixer |
| LT6011ACS8 | Dual/Quad135uA, 14nV/Hz, Rail-to-Rail Output Precision Op Amp |
| LT6011IDD | Paired Cable; Number of Conductors:2; Conductor Size AWG:12; No. Strands x Strand Size:65 x 30; Jacket Material:Polyvinylchloride (PVC); Number of Pairs:1; Features:Unshielded; Leaded Process Compatible:Yes; Temperature Max:90 C RoHS Compliant: Yes |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LT5512EUF | 功能描述:IC MIXER DWNCONV HI SIGN 16-QFN RoHS:否 類別:RF/IF 和 RFID >> RF 混頻器 系列:LT5512 產(chǎn)品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝: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） |
| LT5512EUF#PBF | 功能描述:IC MIXER DWNCONV HI SIGN 16-QFN RoHS:是 類別:RF/IF 和 RFID >> RF 混頻器 系列:LT5512 產(chǎn)品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝: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） |
| LT5512EUF#TR | 功能描述:IC MIXER DOWN-CONV BRDBND 16-QFN RoHS:否 類別:RF/IF 和 RFID >> RF 混頻器 系列:LT5512 產(chǎn)品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝: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） |
| LT5512EUF#TRPBF | 功能描述:IC MIXER DWNCONV HI SIGN 16-QFN RoHS:是 類別:RF/IF 和 RFID >> RF 混頻器 系列:LT5512 產(chǎn)品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝: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） |
| LT5512EUFPBF | 制造商:Linear Technology 功能描述:Downconverter Mixer,LT5512 3GHz QFN |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。