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PDF LTC5551 Data sheet ( Hoja de datos )
| Número de pieza | LTC5551 | |
| Descripción | Ultra-High Dynamic Range Downconverting Mixer | |
| Fabricantes | Linear Technology | |
| Logotipo |  |
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Features
n +36dBm Input IP3
n 2.4dB Conversion Gain
n Low Noise Figure: <10dB
n +18dBm Ultra High Input P1dB
n 670mW Power Consumption
n 2.5V to 3.6V Operation
n 50Ω Single-Ended RF and LO Inputs
n 0dBm LO Drive Level
n Low Power Mode
n –40°C to 105°C Operation (TC)
n Small Solution Size
n Enable Pin
n 16-Lead (4mm × 4mm) QFN Package
Applications
n GSM, LTE, LTE-Advanced Basestations
n Repeaters
n DPD Observation Receiver
n Public Safety Radios, Military and Defense
n Avionics Radios and TCAS Transponders
n Active Phased-Array Antennas
n White-Space Radio Receiver
LTC5551
300MHz to 3.5GHz
Ultra-High Dynamic Range
Downconverting Mixer
Description
The LTC®5551 is a 2.5V to 3.6V mixer optimized for RF
downconverting mixer applications that require very high
dynamic range. The LTC5551 covers the 300MHz to
3.5GHz RF Frequency range with LO frequency range
of 200MHz to 3.5GHz. The LTC5551 provides very high
IIP3 and P1dB with low power consumption. A typical
application is a basestation receiver covering 700MHz to
2.7GHz frequency range. The RF input can be matched for a
wide range of frequencies and the IF is usable up to 1GHz.
A low power mode is activated by pulling the ISEL pin high,
reducing the power consumption by about 1/3, however,
with a corresponding reduction in IIP3 to approximately
+29dBm. The mixer can also be turned on or off by using
the EN pin.
The LTC5551’s high level of integration minimizes the
total solution cost, board space and system level variation,
while providing the highest dynamic range for demanding
receiver applications.
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. All other trademarks are the property of their respective owners.
Typical Application
Wideband Receiver
VCC
3.3V
0.56µF
22pF
1nF
470nH
475Ω
470nH
475Ω
BPF
1nF
LTC6416
IF
AMP
LTC2208
ADC
IF+ IF–
2.2pF
IF LTC5551
3.9pF
LTC6946
RFIN RF
LO SYNTH
LO
7.5nH
LO
1700MHz
EN
(0V/3.3V)
VCC
3.3V
EN BIAS
VCC
0.56µF
22pF
5551 TA01a
For more information www.linear.com/LTC5551
Mixer Conversion Gain and IIP3
vs IF Frequency (Low-Side LO)
39 6
36
33 IIP3
5
30
27 RF = 1770MHz TO 1970MHz
24
21
LO = 1700MHz
ZIF = 200Ω
18 GC
4
3
15
12
9
70
2
NORMAL POWER MODE
LOW POWER MODE
1
90 110 130 150 170 190 210 230 250 270
IF FREQUENCY (MHz)
5551 TA01b
5551f
1
Free Datasheet http://www.datasheet4u.com/
1 page  
Electrical Characteristics
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: The LTC5551 is guaranteed functional over the –40°C to 105°C
case temperature range.
LTC5551
Note 3: SSB Noise Figure measurements performed with a small-signal
noise source, bandpass filter and 6dB matching pad on RF input, bandpass
filter and 6dB matching pad on the LO input, bandpass filter on the IF
output and no other RF signals applied.
T ypical DC Performance Characteristics EN = High, Test circuit shown in Figure 1.
Supply Current vs Supply Voltage,
LO = 1800MHz at 0dBm
250
ISEL = LOW
200
150 ISEL = HIGH
100
50
0
–40
VCC = 3.5V
VCC = 3.3V
VCC = 3.1V
–15 10 35 60 85
CASE TEMPERATURE (°C)
110
5551 G01
Supply Current
LO = 1800MHz
avts0VdCBCm
220
Supply Current vs Supply Voltage,
No LO Applied
180
ISEL = LOW
160
140
120
100 ISEL = HIGH
80
60
40
20
0
–40
VCC = 3.5V
VCC = 3.3V
VCC = 3.1V
–15 10 35 60 85
CASE TEMPERATURE (°C)
110
5551 G02
Supply Current vs LO Frequency
(PLO = 0dBm)
250
ISEL = LOW
200
150 ISEL = HIGH
100
50
0
300
TC = 105°C
TC = 85°C
TC = 25°C
TC = –40°C
700 1100 1500 1900 2300 2700 3100 3500
LO FREQUENCY (MHz)
5551 G03
Supply Current
LO = 1800MHz
avtsTVCC=C
25°C
220
190 190
160 160
130 TC = 105°C
TC = 85°C
TC = 25°C
100 TC = –40°C
2.5 2.6 2.7 2.8 2.9 3.0 3.1 3.2 3.3 3.4 3.5 3.6
VCC (V)
5551 G04
130
LO = 6dBm
LO = 0dBm
LO = –6dBm
100
2.5 2.6 2.7 2.8 2.9 3.0 3.1 3.2 3.3 3.4 3.5 3.6
VCC (V)
5551 G05
For more information www.linear.com/LTC5551
5551f
5
5 Page 
LTC5551
Typical AC Performance Characteristics 2300MHz to 3500MHz application.
VCC = 3.3V, EN = High, ISEL = Low, TC = 25°C, PLO = 0dBm, PRF = 0dBm (0dBm/tone for two-tone IIP3 tests, ∆f = 2MHz),
IF = 153MHz, unless otherwise noted. Test circuit shown in Figure 1.
Conversion Gain, IIP3 and NF vs
RF Frequency (Low Side LO)
39
35 IIP3
31
27 85°C
23
25°C
–40°C
19
15
NF
11
7
3 GC
–1
2.3
2.5 2.7 2.9 3.1 3.3
RF FREQUENCY (GHz)
3.5
Conversion Gain, IIP3 and NF
vs RF Frequency (High Side LO)
36
33 IIP3
30
27
24 85°C
21
25°C
–40°C
18
15 NF
12
9
6
3 GC
0
2.3 2.5 2.7 2.9 3.1 3.3
RF FREQUENCY (GHz)
Conversion Gain, IIP3 and NF
vs RF Frequency
31
28 IIP3
25
22 GC
19
LOW POWER MODE
16 ISEL = HIGH
LOW SIDE LO
13 HIGH SIDE LO
10
7
2.3
NF
2.5 2.7 2.9 3.1 3.3
RF FREQUENCY (GHz)
5
4
3
2
1
0
–1
–2
–3
3.5
5551 G51
5551 G52
5551 G53
Input P1dB vs RF Frequency
20
19 NORMAL POWER MODE
18
17 LOW POWER MODE
16
15
14
13
12
11
10
2.3
LOW SIDE LO
HIGH SIDE LO
2.5 2.7 2.9 3.1 3.3
RF FREQUENCY (GHz)
3.5
5551 G54
2.7GHz Conversion Gain, IIP3 and
NF vs LO Power
39 5
36 IIP3
33 4
30
27
24
21 GC
18
RF = 2.7GHz
LOW SIDE LO
HIGH SIDE LO
3
2
15
12 NF
1
9
–6 –4 –2 0 2 4
LO INPUT POWER (dBm)
0
6
5551 G55
Conversion Gain, IIP3, P1dB
and NF vs Supply Voltage
39
4
36
33 IIP3
30
27
24 GC
RF = 2.7GHz
LOW SIDE LO
HIGH SIDE LO
3
2
21
18 P1dB
1
15
12 NF
0
9 –1
2.5 2.6 2.7 2.8 2.9 3.0 3.1 3.2 3.3 3.4 3.5 3.6
VCC SUPPLY VOLTAGE (V)
5551 G56
Conversion Gain, IIP3 and SSB
NF vs Temperature
39
36 IIP3
33
30
27
24
21
RF = 2700MHz
LOW SIDE LO
HIGH SIDE LO
18
15
12 NF
9
6
3 GC
0
–40 –25 –10 5 20 35 50 65 80 95 110
CASE TEMPERATURE (°C)
5551 G57
LO Leakage and RF Isolation
0
RF-LO
–10
RF-IF
–20
–30 LO-IF
75
60
45
30
–40 LO-RF
15
–50
2.3
2.5 2.7 2.9 3.1 3.3
LO/RF FREQUENCY (GHz)
0
3.5
5551 G58
For more information www.linear.com/LTC5551
2-Tone IF Output Power, IM3 and
IM5 vs RF Input Power
20
10 IFOUT
0
–10
–20 RF1 = 2699MHz
–30
RF2 = 2701MHz
LO = 2547MHz
–40
–50
–60 IM3
–70 IM5
–80
–90
–8
–5 –2 1 4 7 10 13
RF INPUT POWER (dBm/TONE)
16
5551 G59
5551f
11
11 Page | ||
| Páginas | Total 24 Páginas | |
| PDF Descargar | [ Datasheet LTC5551.PDF ] | |
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