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Linear Technology Electronic Components Datasheet

LT6411 Datasheet

650MHz Differential ADC Driver/Dual Selectable Gain Amplifier

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FEATURES
650MHz –3dB Small-Signal Bandwidth
600MHz –3dB Large-Signal Bandwidth
High Slew Rate: 3300V/µs
Easily Configured for Single-Ended to Differential
Conversion
200MHz ±0.1dB Bandwidth
www.DaUtsaeSrheSeetl4eUc.ctaobmle Gain of +1, +2 and –1
No External Resistors Required
46.5dBm Equivalent OIP3 at 30MHz When Driving an
ADC
IM3 with 2VP-P Composite, Differential Output:
–87dBc at 30MHz, –83dBc at 70MHz
–77dB SFDR at 30MHz, 2VP-P Differential Output
6ns 0.1% Settling Time for 2V Step
Low Supply Current: 8mA per Ampifier
Differential Gain of 0.02%, Differential Phase of 0.01°
50dB Channel Separation at 100MHz
Wide Supply Range: ±2.25V (4.5V) to ±6.3V (12.6V)
3mm × 3mm 16-Pin QFN Package
APPLICATIONS
Differential ADC Driver
Single-Ended to Differential Conversion
Differential Video Line Driver
LT6411
650MHz Differential ADC
Driver/Dual Selectable
Gain Amplifier
DESCRIPTION
The LT®6411 is a dual amplifier with individually selectable
gains of +1, +2 and –1. The amplifiers have excellent dis-
tortion performance for driving ADCs as well as excellent
bandwidth and slew rate for video, data transmission and
other high speed applications. Single-ended to differential
conversion with a system gain of 2 is particularly straight-
forward by configuring one amplifier with a gain of +1
and the other amplifier with a gain of –1. The LT6411 can
be used on split supplies as large as ±6V and on a single
supply as low as 4.5V.
Each amplifier draws only 8mA of quiescent current when
enabled. When disabled, the output pins become high
impedance and each amplifier draws less than 350µA.
The LT6411 is manufactured on Linear Technology’s
proprietary, low voltage, complimentary, bipolar process
and is available in the ultra-compact, 3mm × 3mm, 16pin
QFN package.
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
TYPICAL APPLICATION
Differential ADC Driver
5V
1.9VDC
30MHz
INPUT
1.9VDC
VCC
LT6411
370
370
+
370
370
+
VEE
DGND
EN
24
24
AIN–
LTC2249
14-BIT ADC
AIN+ 80Msps
6411 TA01a
30MHz 2-Tone 32768 Point FFT, LT6411
Driving an LTC®2249 14-Bit ADC
0
–10 32768 POINT FFT
–20
TONE 1 AT 29.5MHz, –7dBFS
TONE 2 AT 30.5MHz, –7dBFS
–30 IM3 = –87dBc
–40
–50
–60
–70
–80
–90
–100
–110
–120
–130
–140
0 5 10 15 20 25 30
FREQUENCY (MHz)
35 40
6411 TA01b
6411f
1


Linear Technology Electronic Components Datasheet

LT6411 Datasheet

650MHz Differential ADC Driver/Dual Selectable Gain Amplifier

No Preview Available !

LT6411
ABSOLUTE MAXIMUM RATINGS
(Note 1)
Total Supply Voltage (VCC to VEE) ..........................12.6V
Input Current (Note 2)..........................................±10mA
Output Current (Continuous) ...............................±70mA
EN to DGND Voltage (Note 2) ..................................5.5V
Output Short-Circuit Duration (Note 3) ............ Indefinite
Operating Temperature Range (Note 4) ... –40°C to 85°C
Specified Temperature Range (Note 5) .... –40°C to 85°C
Storage Temperature Range................... –65°C to 125°C
Junction Temperature ........................................... 125°C
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PACKAGE/ORDER INFORMATION
TOP VIEW
16 15 14 13
VEE 1
12 DGND
VEE 2 17 11 EN
VEE 3
10 VCC
NC 4
9 VCC
5678
UD PACKAGE
16-LEAD (3mm × 3mm) PLASTIC QFN
TJMAX = 125°C, θJA = 68°C/W, θJC = 4.2°C/W
EXPOSED PAD (PIN 17) IS VEE, MUST BE SOLDERED TO PCB
ORDER PART NUMBER UD PART MARKING*
LT6411CUD
LT6411IUD
LCGP
LCGP
Order Options Tape and Reel: Add #TR
Lead Free: Add #PBF Lead Free Tape and Reel: Add #TRPBF
Lead Free Part Marking: http://www.linear.com/leadfree/
Consult LTC Marketing for parts specified with wider operating temperature ranges.
*Temperature grade is identified by a label on the shipping container.
ELECTRICAL CHARACTERISTICS The denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VS = ±5V, AV = 2, RL = 150Ω, CL = 1.5pF, VEN = 0.4V, VDGND = 0V,
unless otherwise noted.
SYMBOL
VOS
PARAMETER
Input Referred Offset Voltage
CONDITIONS
VIN = 0V, VOS = VOUT/2
IIN
RIN
CIN
VCMR
PSRR
IPSRR
AV ERR
AV MATCH
VOUT
IS
Input Current
Input Resistance
Input Capacitance
Maximum Input Common Mode Voltage
Minimum Input Common Mode Voltage
Power Supply Rejection Ratio
Input Current Power Supply Rejection
Gain Error
Gain Matching
Maximum Output Voltage Swing
Supply Current, Per Amplifier
VIN = ±1V
f = 100kHz
VS (Total) = 4.5V to 12V (Note 6)
VS (Total) = 4.5V to 12V (Note 6)
VOUT = ±2V
VOUT = ±2V
RL = 1k
RL = 150Ω
RL = 150Ω
Supply Current, Disabled, per Amplifier VEN = 4V
VEN = Open
IEN Enable Pin Current
VEN = 0.4V
VEN = V+
MIN TYP MAX
3 ±10
±20
–17 ±50
150
500
1
VCC – 1
VEE + 1
56
62
1 ±4
–1.2 ±5
±1
±3.70
±3.25
±3.10
±3.95
±3.6
8 11
14
22 350
0.5 350
–200
–95
0.5
50
UNITS
mV
mV
µA
kΩ
pF
V
V
dB
µA/V
%
%
V
V
V
mA
mA
µA
µA
µA
µA
6411f
2


Part Number LT6411
Description 650MHz Differential ADC Driver/Dual Selectable Gain Amplifier
Maker Linear Technology
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LT6411 Datasheet PDF






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