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參數(shù)資料
| 型號： | LT5546EUF |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 衰減器 |
| 英文描述： | 40MHz to 500MHz VGA and I/Q Demodulator with 17MHz Baseband Bandwidth |
| 中文描述： | 40 MHz - 500 MHz RF/MICROWAVE I/Q DEMODULATOR |
| 封裝： | 4 X 4 MM, PLASTIC, QFN-16 |
| 文件頁數(shù)： | 1/12頁 |
| 文件大?。?/td> | 312K |
| 代理商： | LT5546EUF |
LT5546
1
5546f
I
17MHz I/Q Lowpass Output Noise Filters
I
Wide Range 1.8V to 5.25V Supply Voltage
I
Frequency Range: 40MHz to 500MHz
I
THD < 0.14% (–57dBc)
at 800mV
P-P
Differential Output Level
I
IF Overload Detector
I
Log Linear Gain Control Range: –7dB to 56dB
I
Baseband I/Q Amplitude Imbalance: 0.2dB
I
Baseband I/Q Phase Imbalance: 0.6
°
I
7.8dB Noise Figure at Max Gain
I
Input IP3 at Low Gain: –1dBm
I
Low Supply Current: 24mA
I
Low Delay Shift Over Gain Control Range: 2ps/dB
I
Outputs Biased Up While in Standby
I
16-Lead QFN 4mm
×
4mm Package with Exposed Pad
40MHz to 500MHz VGA
and I/Q Demodulator with
17MHz Baseband Bandwidth
, LTC and LT are registered trademarks of Linear Technology Corporation.
Total Harmonic Distortion vs
IF Input Level at 1.8V Supply
I
GPS IF Receivers
I
Satellite IF Receivers
I
VHF/UHF Receivers
I
Wireless Local Loop
2xLO
+
2xLO
–
IF
+
IF
–
EN
STBY
V
CC
I
OUT+
I
OUT–
Q
OUT+
Q
OUT–
GND
1.8V
C2
1
μ
F
C1
1nF
C3
1.8pF
STANDBY
2xLO
560MHz
INPUT
280MHz
IF INPUT
C3
10pF
L2
15nH
5546 TA01
÷
2
LT5546
L1
15nH
L3
39nH
C5
3.3pF
C4
3.3pF
GAIN CONTROL
ENABLE
IF DET
V
CTRL
The LT
5546 is a 40MHz to 500MHz monolithic integrated
quadrature demodulator with variable gain amplifier (VGA)
and 17MHz I/Q baseband bandwidth designed for low volt-
age operation. It supports standards that use a linear modu-
lation format. The chip consists of a VGA, quadrature down-
converting mixers and 17MHz lowpass noise filters (LPF).
The LO port consists of a divide-by-two stage and LO
buffers. The IC provides all building blocks for IF down-
conversion to I and Q baseband signals with a single
supply voltage of 1.8V to 5.25V. The VGA gain has a linear-
in-dB relationship to the control input voltage. Hard-clip-
ping amplifiers at the mixer outputs reduce the recovery
time from a signal overload condition. The lowpass filters
reduce the out-of-band noise and spurious frequency
components. The –3dB corner frequency of the noise
filters is approximately 17MHz and has a first order roll-
off. The standby mode provides reduced supply current
and fast transient response into the normal operating mode
when the I/Q outputs are AC-coupled to a baseband chip.
IF INPUT POWER EACH TONE (dBm)
–60
T
–25
–30
–35
–40
–45
–50
–55
–60
–50
–40
–30
–20
5546 TA01b
–10
f
IF, 1
= 280MHz
f
IF, 2
= 280.1MHz
f
= 570MHz
800mV
P-P
DIFFERENTIAL OUT
FEATURES
DESCRIPTIOU
APPLICATIU
TYPICAL APPLICATIO
U
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| LT581UH | Precision References |
| LT580 | Precision References |
| LT580JH | Precision References |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LT5546EUF#PBF | 功能描述:IC DEMOD QUAD 17MHZ VGA 16-QFN RoHS:是 類別:RF/IF 和 RFID >> RF 解調(diào)器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:- 功能:解調(diào)器 LO 頻率:- RF 頻率:70MHz ~ 300MHz P1dB:-9dBm 增益:- 噪音數(shù)據(jù):6.36dB 電流 - 電源:41.5mA 電源電壓:2.7 V 封裝/外殼:28-WFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:28-TQFN-EP（5x5） 包裝:帶卷 (TR) |
| LT5546EUF#TR | 功能描述:IC DEMOD QUAD 17MHZ VGA 16-QFN RoHS:否 類別:RF/IF 和 RFID >> RF 解調(diào)器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:- 功能:解調(diào)器 LO 頻率:- RF 頻率:70MHz ~ 300MHz P1dB:-9dBm 增益:- 噪音數(shù)據(jù):6.36dB 電流 - 電源:41.5mA 電源電壓:2.7 V 封裝/外殼:28-WFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:28-TQFN-EP（5x5） 包裝:帶卷 (TR) |
| LT5546EUF#TRPBF | 功能描述:IC DEMOD QUAD 17MHZ VGA 16-QFN RoHS:是 類別:RF/IF 和 RFID >> RF 解調(diào)器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:- 功能:解調(diào)器 LO 頻率:- RF 頻率:70MHz ~ 300MHz P1dB:-9dBm 增益:- 噪音數(shù)據(jù):6.36dB 電流 - 電源:41.5mA 電源電壓:2.7 V 封裝/外殼:28-WFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:28-TQFN-EP（5x5） 包裝:帶卷 (TR) |
| LT5546EUFPBF | 制造商:Linear Technology 功能描述:I/Q Demodulator,LT5546 40-500MHz QFN |
| LT5554 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:4GHz to 6GHz High Dynamic Range Downconverting Mixer |
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