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LT6411CUD#TRPBF

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P16
LT6411
1
6411f
TYPICAL APPLICATION
FEATURES
APPLICATIONS
DESCRIPTION
650MHz Differential ADC
Driver/Dual Selectable
Gain Amplifi er
The LT
®
6411 is a dual amplifi er with individually selectable
gains of +1, +2 and –1. The amplifi ers 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 confi guring one amplifi er with a gain of +1
and the other amplifi er 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 amplifi er draws only 8mA of quiescent current when
enabled. When disabled, the output pins become high
impedance and each amplifi er 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.
■
650MHz –3dB Small-Signal Bandwidth
■
600MHz –3dB Large-Signal Bandwidth
■
High Slew Rate: 3300V/µs
■
Easily Confi gured for Single-Ended to Differential
Conversion
■
200MHz ±0.1dB Bandwidth
■
User Selectable Gain of +1, +2 and –1
■
No External Resistors Required
■
46.5dBm Equivalent OIP3 at 30MHz When Driving an
ADC
■
IM3 with 2V
P-P
Composite, Differential Output:
–87dBc at 30MHz, –83dBc at 70MHz
■
–77dB SFDR at 30MHz, 2V
P-P
Differential Output
■
6ns 0.1% Settling Time for 2V Step
■
Low Supply Current: 8mA per Ampifi er
■
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
■
Differential ADC Driver
■
Single-Ended to Differential Conversion
■
Differential Video Line Driver
Differential ADC Driver
30MHz 2-Tone 32768 Point FFT, LT6411
Driving an LTC
®
2249 14-Bit ADC
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
5V
A
IN
–
6411 TA01a
LTC2249
14-BIT ADC
80Msps
A
IN
+
+
+
–
–
V
CC
V
EE
DGND
EN
LT6411
30MHz
1.9V
DC
1.9V
DC
INPUT
370Ω 370Ω
24Ω
24Ω
370Ω 370Ω
FREQUENCY (MHz)
0
–140
AMPLITUDE (dBFS)
–120
–100
–80
0
–40
5
15
20 40
6411 TA01b
–20
–60
–130
–110
–90
–10
–50
–30
–70
10
25
30 35
32768 POINT FFT
TONE 1 AT 29.5MHz, –7dBFS
TONE 2 AT 30.5MHz, –7dBFS
IM3 = –87dBc
LT6411
2
6411f
ELECTRICAL CHARACTERISTICS
PACKAGE/ORDER INFORMATIONABSOLUTE MAXIMUM RATINGS
Total Supply Voltage (V
CC
to V
EE
) ..........................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) ............ Indefi nite
Operating Temperature Range (Note 4) ... –40°C to 85°C
Specifi ed Temperature Range (Note 5) .... –40°C to 85°C
Storage Temperature Range ................... –65°C to 125°C
Junction Temperature ........................................... 125°C
(Note 1)
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
OS
Input Referred Offset Voltage V
IN
= 0V, V
OS
= V
OUT
/2
●
3 ±10
±20
mV
mV
I
IN
Input Current
●
–17 ±50 µA
R
IN
Input Resistance V
IN
= ±1V
●
150 500 kΩ
C
IN
Input Capacitance f = 100kHz 1 pF
V
CMR
Maximum Input Common Mode Voltage
Minimum Input Common Mode Voltage
V
CC
– 1
V
EE
+ 1
V
V
PSRR Power Supply Rejection Ratio V
S
(Total) = 4.5V to 12V (Note 6)
●
56 62 dB
I
PSRR
Input Current Power Supply Rejection V
S
(Total) = 4.5V to 12V (Note 6)
●
1 ±4 µA/V
A
V
ERR Gain Error V
OUT
= ±2V
●
–1.2 ±5 %
A
V
MATCH Gain Matching V
OUT
= ±2V ±1 %
V
OUT
Maximum Output Voltage Swing R
L
= 1k
R
L
= 150Ω
R
L
= 150Ω
●
±3.70
±3.25
±3.10
±3.95
±3.6
V
V
V
I
S
Supply Current, Per Amplifi er
●
811
14
mA
mA
Supply Current, Disabled, per Amplifi er V
EN
= 4V
V
EN
= Open
●
●
22
0.5
350
350
µA
µA
I
EN
Enable Pin Current V
EN
= 0.4V
V
EN
= V
+
●
●
–200 –95
0.5 50
µA
µA
DGND
EN
V
CC
VCC
V
EE
V
EE
V
EE
NC
IN2
+
IN2
–
IN1
–
IN1
+
OUT2
V
CC
V
EE
OUT1
16
1
2
3
4
12
11
10
9
5678
15 14
17
TOP VIEW
UD PACKAGE
16-LEAD (3mm × 3mm) PLASTIC QFN
13
T
JMAX
= 125°C, θ
JA
= 68°C/W, θ
JC
= 4.2°C/W
EXPOSED PAD (PIN 17) IS V
EE
, 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 specifi ed with wider operating temperature ranges.
*Temperature grade is identifi ed by a label on the shipping container.
The
● denotes the specifi cations which apply over the full operating
temperature range, otherwise specifi cations are at T
A
= 25°C. V
S
= ±5V, A
V
= 2, R
L
= 150Ω, C
L
= 1.5pF, V
EN
= 0.4V, V
DGND
= 0V,
unless otherwise noted.
LT6411
3
6411f
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
I
SC
Output Short-Circuit Current R
L
= 0Ω, V
IN
= ±1V
●
±50 ±105 mA
SR Slew Rate ±1V on ±2V Output Step (Note 9) 1700 3300 V/µs
–3dB BW Small-Signal –3dB Bandwidth V
OUT
= 200mV
P-P
, Single Ended 650 MHz
0.1dB BW Gain Flatness ±0.1dB Bandwidth V
OUT
= 200mV
P-P
, Single Ended 200 MHz
FPBW Full Power Bandwidth 2V Differential V
OUT
= 2V
P-P
Differential, –3dB 600 MHz
Full Power Bandwidth 2V V
OUT
= 2V
P-P
(Note 7) 270 525 MHz
Full Power Bandwidth 4V V
OUT
= 4V
P-P
(Note 7) 263 MHz
All Hostile Crosstalk f = 10MHz, V
OUT
= 2V
P-P
f = 100MHz, V
OUT
= 2V
P-P
–75
–50
dB
dB
t
s
Settling Time 0.1% to V
FINAL
, V
STEP
= 2V 6 ns
t
r
, t
f
Small-Signal Rise and Fall Time 10% to 90%, V
OUT
= 200mV
P-P
550 ps
dG Differential Gain (Note 8) 0.02 %
dP Diffi erential Phase (Note 8) 0.01 Deg
ELECTRICAL CHARACTERISTICS
The ● denotes the specifi cations which apply over the full operating
temperature range, otherwise specifi cations are at T
A
= 25°C. V
S
= ±5V, A
V
= 2, R
L
= 150Ω, C
L
= 1.5pF, V
EN
= 0.4V, V
DGND
= 0V,
unless otherwise noted.
The ● denotes the specifi cations which apply over the full operating temperature range, otherwise specifi cations are at T
A
= 25°C.
V
CC
= 5V, V
EE
= 0V, A
V
= 2, No R
LOAD
, V
EN
= 0.4V, V
DGND
= 0V, unless otherwise noted.
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
Noise/Harmonic Performance Input/Output Characteristics
1MHz Signal
HD Second/Third Harmonic Distortion 2V
P-P
Differential
2V
P-P
Differential, R
L
= 200Ω Differential
–88
–87
dBc
dBc
IMD3
1M
Third-Order IMD 2V
P-P
Differential Composite, f1 = 0.95MHz,
f2 = 1.05MHz
–93 dBc
2V
P-P
Differential Composite, f1 = 0.95MHz,
f2 = 1.05MHz, R
L
= 200Ω Differential
–91 dBc
OIP3
1M
Output Third-Order Intercept Differential, f1 = 0.95MHz, f2 = 1.05MHz (Note 10) 49.5 dBm
NF Noise Figure Single Ended 25.1 dB
e
n1M
Input Referred Noise Voltage Density 8 nV/√Hz
P1dB 1dB Compression Point (Note 10) 19.5 dBm
10MHz Signal
HD Second/Third Harmonic Distortion 2V
P-P
Differential
2V
P-P
Differential, R
L
= 200Ω Differential
–85
–76
dBc
dBc
IMD3
10M
Third-Order IMD 2V
P-P
Differential Composite, R
L
= 1k,
f1 = 9.5MHz, f2 = 10.5MHz
–92 dBc
2V
P-P
Differential Composite, f1 = 9.5MHz,
f2 = 10.5MHz, R
L
= 200Ω Differential
–89 dBc
OIP3
10M
Output Third-Order Intercept Differential, f1 = 9.5MHz, f2 = 10.5MHz (Note 10) 49 dBm
NF Noise Figure Single Ended 24.7 dB
e
n10M
Input Referred Noise Voltage Density 7.7 nV/√Hz
P1dB 1dB Compression Point (Note 10) 19.5 dBm
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P16

LT6411CUD#TRPBF

Mfr. #:
Buy LT6411CUD#TRPBF
Manufacturer:
Analog Devices Inc.
Description:
High Speed Operational Amplifiers 650MHz Diff ADC Drvr/2x Sel Gain Amp
Lifecycle:
New from this manufacturer.
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