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LTC6431BIUF-20#PBF

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P16
LTC6431-20
1
643120f
For more information www.linear.com/LTC6431-20
TYPICAL APPLICATION
FEATURES DESCRIPTION
20dB Gain Block,
50Ω IF Amplifier
The LTC
®
6431-20 is a gain block amplifier exhibiting
excellent linearity at frequencies beyond 1000MHz and
with low associated output noise.
The unique combination of linearity, low noise and low
power dissipation make this an ideal candidate for many
signal-chain applications. The LTC6431-20 is easy to
use, requiring a minimum of external components. It is
internally input/output matched to 50Ω and it draws only
93mA from a single 5V supply.
On-chip bias and temperature compensation maintain
performance over environmental changes.
The LTC6431-20 uses a high performance SiGe BiCMOS
process for excellent repeatability compared with similar
GaAs amplifiers. All A-grade LTC6431-20 devices are tested
and guaranteed for OIP3 at 240MHz. The LTC6431-20 is
housed in a 4mm × 4mm 24-lead QFN package with an
exposed pad for thermal management and low inductance.
LTC6431 FAMILY GAIN
LTC6431-15 15.5dB
LTC6431-20 20.8dB
APPLICATIONS
n
50Ω Matched 20MHz to 1400MHz
n
20.8dB Power Gain
n
46.2dBm OIP3 at 240MHz Into 50Ω
n
NF = 2.6dB at 240MHz
n
0.6nV/√Hz Total Input Noise
n
S11 < –10dB Up to 2.0GHz
n
S22 < –10dB Up to 1.4GHz
n
>2.0V
P-P
Linear Output Swing
n
P1dB = 22.0dBm
n
50Ω Single-Ended Input/Output
n
Insensitive to V
CC
Variation
n
A-Grade 100% OIP3 Tested at 240MHz
n
Input/Output Internally Matched to 50Ω
n
Single 5V Supply
n
Single-Ended IF Amplifier
n
ADC Driver
n
CATV
L, LT, LT C , LT M, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. All other trademarks are the property of their respective owners.
Single-Ended IF Amplifier
OIP3 vs Frequency
50Ω
LTC6431-20
V
CC
= 5V
1000pF
50Ω
643120 TA01a
RF CHOKE
560nH
5V
1000pF
FREQUENCY (MHz)
0
OIP3 (dBm)
42
44
46
600
1000
643120 TA01b
40
38
36
200 400 800
48
50
52
V
CC
= 5V
T
A
= 25°C
P
OUT
= 2dBm/TONE
f
SPACE
= 1MHz
Z
IN
= Z
OUT
= 50Ω
LTC6431-20
2
643120f
For more information www.linear.com/LTC6431-20
PIN CONFIGURATIONABSOLUTE MAXIMUM RATINGS
Total Supply Voltage (V
CC
to GND)...........................5.5V
Amplifier Output Current (+OUT) .........................120mA
RF Input Power, Continuous, 50Ω (Note 2)..........15dBm
RF Input Power, 100µs Pulse, 50Ω (Note 2) ........20dBm
Operating Case Temperature Range
(T
CASE
) .....................................................–40°C to 85°C
Storage Temperature Range .................. –65°C to 150°C
Junction Temperature (T
J
) .................................... 150°C
(Note 1)
24 23 22 21 20 19
7 8 9
TOP VIEW
25
GND
UF PACKAGE
24-LEAD (4mm × 4mm) PLASTIC QFN
10 11 12
6
5
4
3
2
1
13
14
15
16
17
18
DNC
DNC
DNC
DNC
DNC
DNC
OUT
GND
T_DIODE
DNC
DNC
DNC
IN
GND
V
CC
DNC
DNC
DNC
DNC
GND
V
CC
DNC
DNC
DNC
T
JMAX
= 150°C, θ
JC
= 54°C/W
EXPOSED PAD (PIN 25) IS GND, MUST BE SOLDERED TO PCB
ORDER INFORMATION
LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC6431AIUF-20#PBF LTC6431AIUF-20#TRPBF 43120
24-Lead (4mm × 4mm) Plastic QFN
–40°C to 85°C T
CASE
LTC6431BIUF-20#PBF LTC6431BIUF-20#TRPBF 43120
24-Lead (4mm × 4mm) Plastic QFN
–40°C to 85°C T
CASE
Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.
Consult LTC Marketing for information on nonstandard lead based finish parts.
For more information on lead free part marking, go to: http://www.linear.com/leadfree/
For more information on tape and reel specifications, go to: http://www.linear.com/tapeandreel/
DC ELECTRICAL CHARACTERISTICS
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
CC
= 5V, Z
SOURCE
= Z
LOAD
= 50Ω. Typical measured DC electrical
performance using Test Circuit A.
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
S
Operating Supply Range
l
4.75 5.0 5.25 V
I
S(TOT)
Total Supply Current All V
CC
Pins Plus OUT
l
75
68
93 113
129
mA
mA
I
S(OUT)
Total Supply Current to OUT Pin Current to OUT
l
55
51
75 95
115
mA
mA
I
CC
Current to V
CC
Pin Either V
CC
Pin May Be Used
l
15
12.5
18 21
21.5
mA
mA
LTC6431-20
3
643120f
For more information www.linear.com/LTC6431-20
AC ELECTRICAL CHARACTERISTICS
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C (Note 3). V
CC
= 5V, Z
SOURCE
= Z
LOAD
= 50Ω unless otherwise noted.
Measurements are performed using Test Circuit A, measuring from 50Ω SMA to 50Ω without de-embedding (Note 4).
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
Small Signal
BW –3dB Bandwidth De-embedded to Package
(Low Frequency Cutoff = 20MHz)
2000 MHz
S11 Input Return Loss 20MHz to 2000MHz
De-embedded to Package –10 dB
S21 Forward Power Gain 50MHz to 1000MHz De-embedded to Package 20.8 dB
S12 Reverse Isolation 20MHz to 3000MHz De-embedded to Package –23 dB
S22 Output Return Loss 20MHz to 1400MHz De-embedded to Package –10 dB
Frequency = 50MHz
S21 Power Gain De-embedded to Package 21.1 dB
OIP3 Output Third-Order Intercept Point P
OUT
= 2dBm/Tone, ∆f = 1MHz, A-Grade
P
OUT
= 2dBm/Tone, ∆f = 1MHz, B-Grade
48.2
47.2
dBm
dBm
IM3 Third-Order Intermodulation P
OUT
= 2dBm/Tone, ∆f = 1MHz, A-Grade
P
OUT
= 2dBm/Tone, ∆f = 1MHz, B-Grade
–92.4
–90.4
dBc
dBc
HD2 Second Harmonic Distortion P
OUT
= 6dBm –53.5 dBc
HD3 Third Harmonic Distortion P
OUT
= 6dBm –93.6 dBc
P1dB Output 1dB Compression Point 23.5 dBm
NF Noise Figure De-embedded to Package 2.6 dB
Frequency = 140MHz
S21 Power Gain De-embedded to Package 21.0 dB
OIP3 Output Third-Order Intercept Point P
OUT
= 2dBm/Tone, ∆f = 1MHz, A-Grade
P
OUT
= 2dBm/Tone, ∆f = 1MHz, B-Grade
48.8
47.8
dBm
dBm
IM3 Third-Order Intermodulation P
OUT
= 2dBm/Tone, ∆f = 1MHz, A-Grade
P
OUT
= 2dBm/Tone, ∆f = 1MHz, B-Grade
–93.6
–91.6
dBc
dBc
HD2 Second Harmonic Distortion P
OUT
= 6dBm –55.8 dBc
HD3 Third Harmonic Distortion P
OUT
= 6dBm –96.6 dBc
P1dB Output 1dB Compression Point 23.0 dBm
NF Noise Figure De-embedded to Package 2.7 dB
Frequency = 240MHz
S21 Power Gain De-embedded to Package
l
19.4
19.0
21.0 21.4
21.5
dB
dB
OIP3
Output Third-Order Intercept Point P
OUT
= 2dBm/Tone, ∆f = 1MHz, A-Grade
P
OUT
= 2dBm/Tone, ∆f = 1MHz, B-Grade
42.2 46.2
45.7
dBm
dBm
IM3 Third-Order Intermodulation P
OUT
= 2dBm/Tone, ∆f = 1MHz, A-Grade
P
OUT
= 2dBm/Tone, ∆f = 1MHz, B-Grade
–90.4
–87.4
–80.4 dBc
dBc
HD2 Second Harmonic Distortion P
OUT
= 6dBm –50.5 dBc
HD3 Third Harmonic Distortion P
OUT
= 6dBm –92.5 dBc
P1dB Output 1dB Compression Point 22.0 dBm
NF Noise Figure De-embedded to Package 2.6 dB
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P16

LTC6431BIUF-20#PBF

Mfr. #:
Buy LTC6431BIUF-20#PBF
Manufacturer:
Analog Devices Inc.
Description:
High Speed Operational Amplifiers 50ohm, 20dB Gain Block Low Distortion Amplifier
Lifecycle:
New from this manufacturer.
Delivery:
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