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Linear Technology Electronic Components Datasheet

LT6402-6 Datasheet

Low Noise Differential Amplifier/ ADC Driver (AV = 6dB)

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FEATURES
n 300 MHz –3dB Bandwidth
n Fixed Gain of 6dB
n Low Distortion:
49dBm OIP3, –85dBc HD3 (20MHz, 2VP-P)
n Low Noise:
www.Data1Sh8e.6edt4BU.NcoF,men = 3.8nV/√Hz (20MHz)
n Differential Inputs and Outputs
n Additional Filtered Outputs
n Adjustable Output Common Mode Voltage
n DC- or AC-Coupled Operation
n Minimal Support Circuitry Required
n Small 0.75mm Profile 16-Lead 3mm × 3mm QFN
Package
APPLICATIONS
n Differential ADC Driver for:
Imaging
Communications
n Differential Driver/Receiver
n Single Ended to Differential Conversion
n Differential to Single Ended Conversion
n Level Shifting
n IF Sampling Receivers
n SAW Filter Interfacing/Buffering
L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
LT6402-6
300MHz Low Distortion, Low
Noise Differential Amplifier/
ADC Driver (AV = 6dB)
DESCRIPTION
The LT®6402-6 is a low distortion, low noise differential
amplifier/ADC driver for use in applications from DC to
300MHz. The LT6402-6 has been designed for ease of
use, with minimal support circuitry required. Exceptionally
low input-referred noise and low distortion (with either
single-ended or differential inputs) make the LT6402-6 an
excellent solution for driving high speed 12-bit and 14-bit
ADCs. In addition to the normal unfiltered outputs (+OUT
and –OUT), the LT6402-6 has a built-in 75MHz differential
low pass filter and an additional pair of filtered outputs
(+OUTFILTERED, –OUTFILTERED) to reduce external fil-
tering components when driving high speed ADCs. The
output common mode voltage is easily set via the VOCM
pin, eliminating an output transformer or AC-coupling
capacitors in many applications.
The LT6402-6 is designed to meet the demanding require-
ments of communications transceiver applications. It can
be used as a differential ADC driver, a general-purpose
differential gain block, or in other applications requir-
ing differential drive. The LT6402-6 can be used in data
acquisition systems required to function at frequencies
down to DC.
The LT6402-6 operates on a 5V supply and consumes 30mA.
It comes in a compact 16-lead 3mm × 3mm QFN package
and operates over a –40°C to 85°C temperature range.
TYPICAL APPLICATION
0.1μF
0.1μF
0.1μF
IF IN
5V
–INB
VCC
–INA
VOCM
+OUT
LT6402-6
+INB
VEE
+INA
–OUT
0.1μF
10Ω
10Ω
VCM
AIN+
LTC®2249
AIN
64026 TA01a
Distortion vs Frequency, Differential Input, No RLOAD
–40
FILTERED OUTPUTS
VOUT = 2VP-P
–50
–60
–70
–80
–90
–100
1
HD3
HD2
10
FREQUENCY (MHz)
100
64026 TA01b
64026fa
1


Linear Technology Electronic Components Datasheet

LT6402-6 Datasheet

Low Noise Differential Amplifier/ ADC Driver (AV = 6dB)

No Preview Available !

LT6402-6
ABSOLUTE MAXIMUM RATINGS
(Note 1)
Total Supply Voltage (VCCA/VCCB/VCCC to
VEEA/VEEB/VEEC) ...................................................5.5V
Input Current (+INA, –INA, +INB, –INB,
VOCM, ENABLE)................................................±10mA
Output Current (Continuous)
+OUT, –OUT ...................................................±100mA
+OUTFILTERED, –OUTFILTERED ......................±30mA
Output Short-Circuit Duration (Note 2) ............ Indefinite
Operating Temperature Range (Note 3).... –40°C to 85°C
wwwS.DpaetcaifiSheedeTt4eUm.cpoemrature Range (Note 4) .... –40°C to 85°C
Storage Temperature Range................... –65°C to 125°C
Junction Temperature ........................................... 125°C
PIN CONFIGURATION
TOP VIEW
16 15 14 13
VCCC 1
VOCM 2
VCCA 3
VEEA 4
12 VEEC
11 ENABLE
17
10 VCCB
9 VEEB
5678
UD PACKAGE
16-LEAD (3mm × 3mm) PLASTIC QFN
TJMAX = 125°C, θJA = 68°C/W, θJC = 4.2°C/W
EXPOSED PAD IS VEE (PIN 17)
MUST BE SOLDERED TO THE PCB
ORDER INFORMATION
LEAD FREE FINISH
TAPE AND REEL
PART MARKING*
PACKAGE DESCRIPTION
TEMPERATURE RANGE
LT6402CUD-6#PBF
LT6402CUD-6#TRPBF LBZZ
16-Lead (3mm × 3mm) Plastic QFN
–40°C to 85°C
LT6402IUD-6#PBF
LT6402IUD-6#TRPBF LBZZ
16-Lead (3mm × 3mm) Plastic QFN
–40°C to 85°C
LEAD BASED FINISH
TAPE AND REEL
PART MARKING*
PACKAGE DESCRIPTION
TEMPERATURE RANGE
LT6402CUD-6
LT6402CUD-6#TR
LBZZ
16-Lead (3mm × 3mm) Plastic QFN
–40°C to 85°C
LT6402IUD-6
LT6402IUD-6#TR
LBZZ
16-Lead (3mm × 3mm) Plastic QFN
–40°C to 85°C
Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.
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 TA = 25°C. VCCA = VCCB = VCCC = 5V, VEEA = VEEB = VEEC = 0V, ENABLE = 0.8V, +INA
shorted to +INB (+IN), –INA shorted to –INB (–IN), VOCM = 2.2V, Input common mode voltage = 2.2V, no RLOAD unless otherwise noted.
SYMBOL
PARAMETER
CONDITIONS
MIN TYP MAX UNITS
Input/Output Characteristics (+INA, +INB, –INA, –INB, +OUT, –OUT, +OUTFILTERED, –OUTFILTERED)
GDIFF
VSWINGMIN
VSWINGMAX
VSWINGDIFF
IOUT
VOS
Gain
Output Voltage Swing
Output Current Drive
Input Offset Voltage
Differential (+OUT, –OUT), VIN = ±800mV Differential l 5.8
Single-Ended +OUT, –OUT, +OUTFILTERED,
–OUTFILTERED, VIN = ±2.2V Differential
l
Single-Ended +OUT, –OUT, +OUTFILTERED,
–OUTFILTERED, VIN = ±2.2V Differential
3.4
l 3.3
Differential (+OUT, –OUT), VIN = ±2.2V Differential
6.1
l 5.6
6 6.3
0.25 0.35
0.5
3.6
7
l ±30
±35
–6.5
l –10
1
6.5
10
dB
V
V
V
V
VP-P
VP-P
mA
mV
mV
64026fa
2


Part Number LT6402-6
Description Low Noise Differential Amplifier/ ADC Driver (AV = 6dB)
Maker Linear Technology
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LT6402-6 Datasheet PDF






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