LINEAR TECHNOLOGY LTC6409 Technical data
Differential Amplifiers
High Speed ADC Drivers
LTC6409
n
88dB SFDR at 100MHz, 2V
n
1.1nV/
√
Hz
Input Noise Density
n
0.5V to 3.5V Output Common Mode Voltage
n
Input Range Includes Ground
P-P
Differential Amplifiers/ADC Drivers
80dBc
90dBc
HD2/
Part
Number
LTC6409 110 90 1.1 1.9 (1%) 0.5 to 3.5 2.7 5.25 52
LTC6406 30 20 1.6 11 (0.1%) 0.5 to 2 2.7 3.5 18
LTC6405 30 25 1.6 11 (0.1%) 0.5 to 3.9 4.5 5.5 18
LTC6404-4
(AV ≥ 4)
LTC6404-2
(AV ≥ 2)
LTC6404-1 15 10 1.5 13 (0.1%) 1.1 to 4 2.7 5.25 27
LTC6403-1 9 5 2.8 30 (0.1%) 1.1 to 4 2.7 5.25 11
LT1994 2 1.5 3 90 (0.1%) 1.1 to 11.8 2.375 12.6 14
HD2/
HD3
(MHz)
HD3
(MHz)
25 15 1.5 11 (0.1%) 1.1 to 3.7 2.7 5.25 30
30 20 1.5 12 (0.1%) 1.1 to 4 2.7 5.25 30
Input-
Referred
Noise
(nV/√Hz)
Settling
Time (ns)
Output
Common
Mode
Range (V)
V
S
(Min)
(V)
V
S
(Max)
(V)
IS
(mA)
Fixed Gain IF Differential Amplifiers/ADC Drivers: Single
Part
Number
LTC6416 0 350 120 - 1.8 0.5 to 2.3 3400 1.8 12k 2.7 3.9 42
LTC6400-26 26 260 200 130 1.4 1 to 1.6 6670 2 50 2.85 3.5 85
LTC6400-20 20 250 160 120 1.9 1 to 1.6 4500 0.8 200 2.85 3.5 90
LTC6400-14 14 200 170 100 2.5 1 to 1.6 6000 1.7 200 2.85 3.5 85
LTC6400-8 8 260 160 110 3.7 1 to 1.6 3810 1.8 400 2.85 3.5 85
LTC6401-26 26 140 100 50 1.44 1 to 1.6 3300 3 50 2.85 3.5 45
LTC6401-20 20 150 100 75 2.1 1 to 1.6 4500 2 200 2.85 3.5 50
LTC6401-14 14 200 140 90 2.5 1 to 1.6 3600 1.8 200 2.85 3.5 45
LTC6401-8 8 200 140 100 3.2 1 to 1.6 3400 2.3 400 2.85 3.5 45
LTC6410-6 6 140 70 - 11dB 1.2 to 1.8 1500 3 50 to 2k 2.8 5.25 104
LT6411 0 or 6 80 60 20 7.7 - 3300 6 (0.1%) 500k 4.5 12 16
LT1993-10 20 80 55 25 1.7 1.2 to 3.6 1100 4 100 4 5.5 100
LT1993-4 12 80 50 20 2.2 1.2 to 3.6 1100 4 100 4 5.5 100
LT1993-2 6 70 60 20 3.5 1.1 to 3.6 1100 4 200 4 5.5 100
LT6402-20 20 35 30 20 1.9 1.2 to 3.6 400 8 100 4 5.5 30
LT6402-12 12 35 25 15 2.6 1.2 to 3.6 400 10 100 4 5.5 30
LT6402-6 6 - 35 20 3.8 1.2 to 3.6 400 10 200 4 5.5 30
Voltage
Gain
(dB)
70dB IM3
(MHz)
80dB IM3
(MHz)
90dB IM3
(MHz)
Total Input-
Referred
Noise
(nV/√Hz)
Output
Common
Mode
Range (V)
Slew
Rate
(V/µs)
1%
Settling
Time
(ns)
ZIN
(Ω)
VS (Min)
(V)
VS (Max)
(V)
IS per
Amplifier
(mA)
Fixed Gain IF Differential Amplifiers/ADC Drivers: Dual
LTC6420-20 20 250 140 50 2.2 1.1 to 1.6 4500 0.8 200 2.85 3.5 80
LTC6421-20 20 120 50 - 2.2 1 to 1.6 4500 2 200 2.85 3.5 40
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trademarks of Linear Technology Corporation. All other trademarks are the
property of their respective owners.
Variable Gain Amplifiers
VGAs for IF and Baseband Applications
Part Number Gain Control
LTC6412 Analog – 14 to 17 Continuous 35 at 240MHz 9.5 3 3.6 110
LT5554 Digital 1.725 to 17.6 0.125 48 at 200MHz 10.3 4.75 5.25 200
LT5524 Digital 4.5 to 27 1.5 40 at 50MHz 8.6 4.75 5.25 75
LT5514 Digital 10.5 to 33 1.5 47 at 50MHz 7.3 4.75 5.25 148
Gain Range
(dB)
Gain Steps
(dB)
OIP3
(dBm)
NF
(dB)
VS (Min)
(V)
VS (Max)
(V)
LTC6412
n
800MHz –3dB Small-Signal Bandwidth
n
Continuously Adjustable Gain Control
n
–14dB to +17dB Linear-in-dB Gain Range
n
35dBm OIP3 at 240MHz Across All Gain Settings
n
10dB Noise Figure at Maximum Gain
n
(IIP3 – NF) = +8dBm at 240MHz Across All Gains
n
2.7nV/
√Hz)
n
Differential Inputs and Outputs
n
50Ω Input Impedance Across All Gains
Input Referred Noise
IS
(mA)
Integrated Differential Filters/ADC Drivers
Broadband Integrated Differential Filters/ADC Drivers: Single
Part
Number
LTC6601-1 2nd 5 to 28 – 17 to 17 – 72 at 10MHz 2.1 2.7 5.25 33
LTC6601-2 2nd 5 to 27 – 17 to 17 – 65 at 10MHz 5.2 2.7 5.25 16
LT6600-20 4th 20 Resistor Set –83 at 2.5MHz 16 3 11 42
LT6600-15 4th 15 Resistor Set –86 at 1MHz 19 3 11 35
LT6600-10 4th 10 Resistor Set –88 at 1MHz 14 3 11 35
LT6600-5 4th 5 Resistor Set –93 at 1MHz 16 3 11 28
LT6600-2.5 4th 2.5 Resistor Set – 88 at 1MHz 25 3 11 26
Part
Number
LTC6605-14 2nd 12.4 to 25 0, 6, 9.5 – 81 at 7MHz 0.25 2.1 2.7 5.25 33
LTC6605-10 2nd 9.7 to 14 0, 12, 14 – 90 at 5MHz 0.35 2.1 2.7 5.25 33
LTC6605-7 2nd 6.5 to 10 0, 12, 14 – 96 at 3MHz 0.35 2.1 2.7 5.25 33
LT6604-15 4th 15 Resistor Set – 86 at 1MHz 0.6 19 3 11 35
LT6604-10 4th 10 Resistor Set – 88 at 1MHz 0.7 14 3 11 35
LT6604-5 4th 5 Resistor Set – 93 at 1MHz 0.6 16 3 11 28
LT6604-2.5 4th 2.5 Resistor Set – 88 at 1MHz 0.6 25 3 11 26
LT1568 2nd 0.2 to 5 Resistor Set –84 at 2MHz 0.25 18μV
LTC6603 9th 24kHz to 2.5MHz 0 to 24 – 75 at 1MHz 0.15 40 2.7 36 44
LTC6602 5th 4.2kHz to 900kHz 0 to 30 –8 2 at 30 0kHz 0.2 20 2.7 36 33
Filter
Cut-Off Frequency
Order
Filter
Order
Range (MHz)
Gain
(dB) HD2/HD3 (dBc)
Total Input-Ref. Noise
(nV/√Hz)
Broadband Integrated Differential Filters/ADC Drivers: Dual
Cut-Off
Frequency
Range
(MHz)
Gain
(dB)
HD2/HD3
(dBc)
Gain Match
Max
(dB)
Total Input-Ref.
Noise
(nV/√Hz)
RMS
VS (Min)
(V)
VS (Min)
(V)
2.7 11 26
VS (Max)
(V)
VS (Max)
(V)
(mA)
IS per
Amplifier
(mA)
IS
www.linear.com/adcdrivers n 1-800-4-LINEAR
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