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LTC6410CUD-6#PBF

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P16
LTC6410-6
1
64106fa
FEATURES
APPLICATIONS
DESCRIPTION
Low Distortion, Low Noise
Differential IF Amplifi er with
Confi gurable Input Impedance
The LTC
®
6410-6 is a low distortion, low noise differential
IF amplifi er with confi gurable input impedance designed
for use in applications from DC to 1.4GHz. The LTC6410-6
has 6dB of voltage gain. The LTC6410-6 is an excellent
choice for interfacing active mixers to SAW fi lters. It fea-
tures an active input termination that allows a customized
input impedance for an optimum interface to differential
active mixers. This feature provides additional power gain
because of the impedance conversion and improved noise
performance when compared to traditional 50 interface
circuits. The LTC6410-6 drives a differential 50 load
directly with low distortion, which is suitable for driving
SAW fi lters and other 50 signal chain blocks.
The LTC6410-6 operates on 3V or 5V supplies. It comes in
a compact 16-lead 3mm × 3mm QFN package and operates
over a –40°C to 85°C temperature range.
Post Mixer Gain Block (140MHz IF)
n
1.4GHz –3dB Bandwidth
n
Fixed Voltage Gain of 6dB (50 System)
n
Confi gurable Input Impedance Allows:
Simple Interface to Active Mixers
Improved Noise Performance
n
Wide 2.8V to 5.25V Supply Range
n
Low Distortion:
36dBm OIP3 (70MHz)
33dBm OIP3 (140MHz)
31dBm OIP3 (300MHz)
n
Low Noise:
11dB NF (50 Z
IN
)
8dB NF (200 Z
IN
)
n
Differential Inputs and Outputs
n
Self-Biasing Inputs/Outputs
n
Shutdown Mode
n
Minimal Support Circuitry Required
n
16-Lead 3mm × 3mm × 0.8mm QFN Package
n
Post-Mixer Gain Block
n
SAW Filter Interface/Buffering
n
Differential IF Signal Chain Gain Block
n
Differential Line Driver/Receiver
2-Tone Spectrum Analyzer Plot
L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
TYPICAL APPLICATION
0.1µF
12pF
12pF
0.1µF680pF
24nH
82nH
SYSTEM OIP3 = 29dBm AT 1900MHz
SYSTEM NF = 15dB AT 1900MHz
82nH
24nH
LT5527
MIXER
1760MHz
LO
LTC6410-6
64106 TA01a
–TERM
–IN
+IN
+TERM
–OUT
SHDN
V
BIAS
V
+
V
–
5V
5V
+OUT
18pF
18pF
FREQUENCY (MHz)
130
OUTPUT POWER (dBm)
–40
–20
0
146
64106 TA01b
–60
–80
–50
–30
–10
–70
–90
–100
134132
138136
142 144 148
140
150
LTC6410-6
2
64106fa
ABSOLUTE MAXIMUM RATINGS
Total Supply Voltage (V
+
to V
–
) ................................5.5V
Amplifi er Input Current (DC)
(+IN, –IN, +TERM, –TERM) .............................±10mA
Amplifi er Input Power (AC)
(+IN, –IN, +TERM, –TERM) .............................18dBm
Input Current (V
BIAS
, SHDN) ................................±10mA
Output Current (+OUT, –OUT) ..............................±50mA
Operating Temperature Range (Note 2).... –40°C to 85°C
Specifi ed Temperature Range (Note 3) .... –40°C to 85°C
Storage Temperature Range ................... –65°C to 150°C
Junction Temperature .......................................... 150°C
Lead Temperature (Soldering, 10 sec) .................. 300°C
(Note 1)
The
l denotes the specifi cations which apply over the full
operating temperature range, otherwise specifi cations are at T
A
= 25°C. V
+
= 3V, V
–
= 0V, SHDN = 2V, +IN is shorted to +TERM, –IN is
shorted to –TERM, V
BIAS
= 1.5V, +IN = –IN = 1.5V, input source resistance (R
S
) is 25 on each input (50 differential), R
L
= 50 from
+OUT to –OUT, unless otherwise noted. V
BIAS
is defi ned as the voltage on the V
BIAS
pin. V
OUTCM
is defi ned as (+OUT + –OUT)/2. V
INCM
is defi ned as (+IN + –IN)/2. V
INDIFF
is defi ned as (+IN – –IN). V
OUTDIFF
is defi ned as (+OUT – –OUT). See DC test circuit schematic.
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
G
DIFF
Differential Gain
(Low Frequency S21)
V
INDIFF
= ±0.2V
l
5.0
4.7
6.0 6.7
7.0
dB
dB
TC G
DIFF
Differential Gain Temperature
Coeffi cient
l
0.003 dB/°C
V
SWINGDIFF
Differential Output Voltage Swing V
OUTDIFF,
V
INDIFF
= ±2V
l
2.2
2.0
2.8 V
P-P
V
P-P
V
SWINGMIN
Output Swing Low Single-Ended +OUT, –OUT, V
INDIFF
= ±2V
l
0.7 0.9
1.0
V
V
V
SWINGMAX
Output Swing High Single-Ended +OUT, –OUT, V
INDIFF
= ±2V
l
1.9
1.8
2.1 V
V
I
OUT
Output Current Drive Short +OUT to –OUT, V
INDIFF
= ±2V (Note 4)
l
±38
±36
±42 mA
mA
V
OS
Input Offset Voltage
l
–2.0
–3.0
0.4 2.0
3.0
mV
mV
PIN CONFIGURATION
3V DC ELECTRICAL CHARACTERISTICS
LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE (Notes 2, 3)
LTC6410CUD-6#PBF LTC6410CUD-6#TRPBF LDBG 16-Lead (3mm × 3mm) Plastic QFN –40°C to 85°C
LTC6410IUD-6#PBF LTC6410IUD-6#TRPBF LDBG 16-Lead (3mm × 3mm) Plastic QFN –40°C to 85°C
Consult LTC Marketing for parts specifi ed with wider operating temperature ranges. *The temperature grade is identifi ed by a label on the shipping container.
Consult LTC Marketing for information on non-standard lead based fi nish parts.
For more information on lead free part marking, go to: http://www.linear.com/leadfree/
For more information on tape and reel specifi cations, go to: http://www.linear.com/tapeandreel/
16
17
15 14 13
5 6 7 8
TOP VIEW
UD PACKAGE
16-LEAD (3mm × 3mm) PLASTIC QFN
9
10
11
12
4
3
2
1V
–
V
BIAS
V
+
V
–
V
–
SHDN
V
+
V
–
+TERM
+IN
–IN
–TERM
V
+
+OUT
–OUT
V
+
T
JMAX
= 150°C, θ
JA
= 68°C/W, θ
JC
= 4.2°C/W
EXPOSED PAD (PIN 17) IS V
–
, MUST BE SOLDERED TO PCB
ORDER INFORMATION
LTC6410-6
3
64106fa
3V DC ELECTRICAL CHARACTERISTICS
The l denotes the specifi cations which apply over the full
operating temperature range, otherwise specifi cations are at T
A
= 25°C. V
+
= 3V, V
–
= 0V, SHDN = 2V, +IN is shorted to +TERM, –IN is
shorted to –TERM, V
BIAS
= 1.5V, +IN = –IN = 1.5V, input source resistance (R
S
) is 25 on each input (50 differential), R
L
= 50 from
+OUT to –OUT, unless otherwise noted. V
BIAS
is defi ned as the voltage on the V
BIAS
pin. V
OUTCM
is defi ned as (+OUT + –OUT)/2. V
INCM
is defi ned as (+IN + –IN)/2. V
INDIFF
is defi ned as (+IN – –IN). V
OUTDIFF
is defi ned as (+OUT – –OUT). See DC test circuit schematic.
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
TC V
OS
Input Offset Voltage Drift
l
–0.3 µV/°C
V
OSINCM
Common Mode Offset Voltage V
OUTCM
– V
INCM
l
–40
–50
13 40
50
mV
mV
A
V
Internal Voltage Gain 2.7 V/V
I
VRMIN
Input Common Mode Voltage Range,
(Min)
l
1.0 V
I
VRMAX
Input Common Mode Voltage Range,
(Max)
l
2.0 V
R
INDIFF
Differential Input Resistance V
INDIFF
= ±100mV (Note 4)
l
40
30
58 80
100
X
INDIFF
Differential Input Reactance f = 100MHz 1 pF
R
INCM
Input Common Mode Resistance 1000
CMRR Common Mode Rejection Ratio V
BIAS
= 1.5V, +IN = –IN = 1V to 2V, (ΔV
OUTDIFF
/Gain)
l
45 60 dB
R
ODIFF
Differential Output Resistance V
OUTDIFF
= ±100mV (Note 4)
l
17
13
22 38
47
X
OUTDIFF
Differential Output Reactance f = 100MHz 10 nH
R
OUTCM
Common Mode Output Resistance 7
Bias Voltage Control (V
BIAS
Pin)
G
CM
Common Mode Gain V
BIAS
= 1.2V to 1.8V (+IN and –IN fl oating),
ΔV
OUTCM
/(0.6V) l
0.7
0.6
0.86 1.0
1.0
V/V
V/V
V
OCMMIN
Output Common Mode Voltage
Adjustment Range, (Min)
l
1.0 1.2 V
V
OCMMAX
Output Common Mode Voltage
Adjustment Range, (Max)
l
1.8 2.0 V
V
OSCM
Output Common Mode Offset Voltage V
OUTCM
– V
BIAS
l
–200
–400
100 300
400
mV
mV
R
VOCM
V
BIAS
Input Resistance
l
2.4
2.0
3.0 3.6
4.0
k
k
C
VBIAS
V
BIAS
Input Capacitance 3pF
SHDN Pin
V
IL
SHDN Input Low Voltage
l
0.8 1.0 V
V
IH
SHDN Input High Voltage
l
1.8 2 V
I
IL
SHDN Input Low Current SHDN = 0.8V
l
–200 –85 0 µA
I
IH
SHDN Input High Current SHDN = 2V
l
–150 –30 0 µA
Power Supply
V
S
Operating Range
l
2.8 5.25 V
I
S
Supply Current
l
104 130
140
mA
mA
I
SSHDN
Supply Current in Shutdown SHDN = 0.8V
l
35 mA
PSRR Power Supply Rejection Ratio V
+
= 2.8V to 5.25V, V
BIAS
= +IN = –IN = V
+
/2
l
73 100 dB
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LTC6410CUD-6#PBF

Mfr. #:
Buy LTC6410CUD-6#PBF
Manufacturer:
Analog Devices Inc.
Description:
High Speed Operational Amplifiers L Dist, L N Diff IF Amp w/ Config In Imp
Lifecycle:
New from this manufacturer.
Delivery:
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