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LTC6406IMS8E#TRPBF

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24
LTC6406
1
6406fc
FEATURES
APPLICATIONS
DESCRIPTION
3GHz, Low Noise,
Rail-to-Rail Input Differential
Amplifi er/Driver
The LTC
®
6406 is a very low noise, low distortion, fully
differential input/output amplifi er optimized for 3V, single
supply operation. The LTC6406 input common mode range
is rail-to-rail, while the output common mode voltage is
independently adjustable by applying a voltage on the
V
OCM
pin. This makes the LTC6406 ideal for level-shifting
signals with a wide common mode range for driving 12-bit
to 16-bit single supply, differential input ADCs.
A 3GHz gain-bandwidth product results in 70dB linearity for
50MHz input signals. The LTC6406 is unity-gain stable and
the closed-loop bandwidth extends from DC to 800MHz.
The output voltage swing extends from near ground to
2V, to be compatible with a wide range of ADC converter
input requirements. The LTC6406 draws only 18mA, and
has a hardware shutdown feature which reduces current
consumption to 300μA.
The LTC6406 is available in a compact 3mm × 3mm 16-pin
leadless QFN package as well as an 8-lead MSOP package,
and operates over a –40°C to 85°C temperature range.
ADC Driver: Single-Ended Input to Differential Output with
Common Mode Level Shifting
n
Low Noise: 1.6nV/√Hz RTI
n
Low Power: 18mA at 3V
n
Low Distortion (HD2/HD3):
–80dBc/–69dBc at 50MHz, 2V
P-P
–104dBc/–90dBc at 20MHz, 2V
P-P
n
Rail-to-Rail Differential Input
n
2.7V to 3.5V Supply Voltage Range
n
Fully Differential Input and Output
n
Adjustable Output Common Mode Voltage
n
800MHz –3dB Bandwidth with A
V
= 1
n
Gain-Bandwidth Product: 3GHz
n
Low Power Shutdown
n
Available in 8-Lead MSOP and Tiny 16-Lead
3mm × 3mm × 0.75mm QFN Packages
n
Differential Input ADC Driver
n
Single-Ended to Differential Conversion
n
Level-Shifting Ground-Referenced Signals
n
Level-Shifting V
CC
-Referenced Signals
n
High Linearity Direct Conversion Receivers
Harmonic Distortion vs Frequency
TYPICAL APPLICATION
+
–
–
+
150Ω
1.8pF
LTC6406
V
OCM
1.25V
V
IN
150Ω
150Ω
150Ω
6406 TA01
+INA
–INA
LTC22xx ADC
GND
V
DD
3V
3V
1.8pF
FREQUENCY (MHz)
6406 TA01b
DISTORTION (dBc)
V
S
= 3V
V
OCM
= V
ICM
= 1.25V
R
LOAD
= 800Ω
V
OUTDIFF
= 2V
P-P
DIFFERENTIAL INPUTS
–30
–40
–50
–60
–70
–80
–90
–110
–100
2ND, R
I
= R
F
= 150Ω
2ND, R
I
= R
F
= 500Ω
3RD, R
I
= R
F
= 150Ω
3RD, R
I
= R
F
= 500Ω
1 10010
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. All other trademarks are the property of their respective owners.
LTC6406
2
6406fc
ABSOLUTE MAXIMUM RATINGS
Total Supply Voltage (V
+
to V
–
) ................................3.5V
Input Current
+IN, –IN, V
OCM
, SHDN, V
TIP
(Note 2) ...............±10mA
Output Short-Circuit Duration (Note 3) ............ Indefi nite
(Note 1)
LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION
SPECIFIED
TEMPERATURE RANGE
LTC6406CUD#PBF LTC6406CUD#TRPBF LCTC
16-Lead (3mm × 3mm) Plastic QFN
0°C to 70°C
LTC6406IUD#PBF LTC6406IUD#TRPBF LCTC
16-Lead (3mm × 3mm) Plastic QFN
–40°C to 85°C
LTC6406CMS8E#PBF LTC6406CMS8E#TRPBF LTCTB 8-Lead Plastic MSOP 0°C to 70°C
LTC6406IMS8E#PBF LTC6406IMS8E#TRPBF LTCTB 8-Lead Plastic MSOP –40°C to 85°C
Consult LTC Marketing for parts specifi ed with wider operating temperature ranges. *The temperature grade is identifi ed by a label on the shipping container.
Consult LTC Marketing for information on non-standard lead based fi nish parts.
For more information on lead free part marking, go to: http://www.linear.com/leadfree/
For more information on tape and reel specifi cations, go to: http://www.linear.com/tapeandreel/
ORDER INFORMATION
16
17
15 14 13
5 6 7 8
TOP VIEW
UD PACKAGE
16-LEAD (3mm × 3mm) PLASTIC QFN
9
10
11
12
4
3
2
1SHDN
V
+
V
–
V
OCM
V
–
V
+
V
+
V
–
NC
+IN
–OUT
–OUTF
V
TIP
–IN
+OUT
+OUTF
T
JMAX
= 150°C, θ
JA
= 68°C/W, θ
JC
= 4.2°C/W
EXPOSED PAD (PIN 17) IS V
–
, MUST BE SOLDERED TO PCB
1
2
3
4
TOP VIEW
MS8E PACKAGE
8-LEAD PLASTIC MSOP
1
2
3
4
–IN
V
OCM
V
+
+OUT
8
7
6
5
+IN
SHDN
V
–
–OUT
9
T
JMAX
= 150°C, θ
JA
= 40°C/W, θ
JC
= 10°C/W
EXPOSED PAD (PIN 9) IS V
–
, MUST BE SOLDERED TO PCB
PIN CONFIGURATION
Operating Temperature Range (Note 4) .... –40°C to 85°C
Specifi ed Temperature Range (Note 5) .... –40°C to 85°C
Junction Temperature ........................................... 150°C
Storage Temperature Range ................... –65°C to 150°C
LTC6406
3
6406fc
DC ELECTRICAL CHARACTERISTICS
The l denotes the specifi cations which apply over the full
operating temperature range, otherwise specifi cations are at T
A
= 25°C. V
+
= 3V, V
–
= 0V, V
CM
= V
OCM
= V
ICM
= 1.25V, V
SHDN
= open,
R
BAL
= 100kΩ, R
I
= 150Ω, R
F
= 150Ω (0.1% resistors), C
F
= 1.8pF (see Figure 1) unless otherwise noted. V
S
is defi ned as (V
+
– V
–
).
V
OUTCM
is defi ned as (V
+OUT
+ V
–OUT
)/2. V
ICM
is defi ned as (V
+IN
+ V
–IN
)/2. V
OUTDIFF
is defi ned as (V
+OUT
– V
–OUT
).
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
OSDIFF
Differential Offset Voltage (Input Referred) V
ICM
= 3V (Note 12)
V
ICM
= 1.25V
V
ICM
= 0V (Note 12)
l
l
l
±1
±0.25
±1
±5
±3.5
±5
mV
mV
mV
ΔV
OSDIFF
/ΔT
Differential Offset Voltage Drift (Input Referred) V
ICM
= 3V (Note 12)
V
ICM
= 1.25V
V
ICM
= 0V (Note 12)
l
l
l
12
1
7
μV/°C
μV/°C
μV/°C
I
B
Input Bias Current (Note 6) V
ICM
= 3V
V
ICM
= 1.25V
V
ICM
= 0V
l
–24
6
–9
–17
–1
μA
μA
μA
I
OS
Input Offset Current (Note 6) V
ICM
= 3V
V
ICM
= 1.25V
V
ICM
= 0V
l
±1
±1
±1
±3
μA
μA
μA
R
IN
Input Resistance Common Mode
Differential Mode
130
3
kΩ
kΩ
C
IN
Input Capacitance Differential 1 pF
e
n
Differential Input Referred Noise Voltage Density f = 1MHz, Not Including
R
I
/R
F
Noise
1.6 nV/√Hz
i
n
Input Noise Current Density f = 1MHz, Not Including
R
I
/R
F
Noise
2.5 pA/√Hz
e
nVOCM
Input Referred Common Mode Output Noise Voltage Density f = 1MHz 9 nV/√Hz
V
ICMR
(Note 7) Input Signal Common Mode Range Op Amp Inputs
l
V
–
V
+
V
CMRRI
(Note 8)
Input Common Mode Rejection Ratio
(Input Referred) ΔV
ICM
/ΔV
OSDIFF
V
ICM
from 0V to 3V
l
50 65 dB
CMRRIO
(Note 8)
Output Common Mode Rejection Ratio (Input Referred)
ΔV
OCM
/ΔV
OSDIFF
V
OCM
from 0.5V to 2V
l
50 70 dB
PSRR
(Note 9)
Differential Power Supply Rejection
(ΔV
S
/ΔV
OSDIFF
)
V
S
= 2.7V to 3.5V
l
55 75 dB
PSRRCM
(Note 9)
Output Common Mode Power Supply Rejection
(ΔV
S
/ΔV
OSCM
)
V
S
= 2.7V to 3.5V
l
55 65 dB
G
CM
Common Mode Gain (ΔV
OUTCM
/ΔV
OCM
)
V
OCM
from 0.5V to 2V
l
1V/V
ΔG
CM
Common Mode Gain Error 100 • (G
CM
– 1) V
OCM
from 0.5V to 2V
l
±0.4 ±0.8 %
BAL
Output Balance (ΔV
OUTCM
/ΔV
OUTDIFF
) ΔV
OUTDIFF
= 2V
Single-Ended Input
Differential Input
l
l
–57
–65
–45
–45
dB
dB
V
OSCM
Common Mode Offset Voltage (V
OUTCM
– V
OCM
)
l
±6 ±15 mV
ΔV
OSCM
/ΔT
Common Mode Offset Voltage Drift
l
15 μV/°C
V
OUTCMR
(Note 7)
Output Signal Common Mode Range
(Voltage Range for the V
OCM
Pin)
l
0.5 2 V
R
INVOCM
Input Resistance, V
OCM
Pin
l
12 18 24
kΩ
V
OCM
Self-Biased Voltage at the V
OCM
Pin V
OCM
= Open
l
1.15 1.25 1.35 V
V
OUT
Output Voltage, High, +OUT/–OUT Pins V
S
= 3.3V, I
L
= 0
V
S
= 3.3V, I
L
= –20mA
l
l
2.2
2
2.35
2.15
V
V
V
S
= 3V, I
L
= 0
V
S
= 3V, I
L
= –5mA
V
S
= 3V, I
L
= –20mA
l
l
l
2
1.95
1.7
2.05
2
1.85
V
V
V
Output Voltage, Low, +OUT/–OUT Pins V
S
= 3V, I
L
= 0
V
S
= 3V, I
L
= 5mA
V
S
= 3V, I
L
= 20mA
l
l
l
0.23
0.34
0.75
0.33
0.4
0.85
V
V
V
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LTC6406IMS8E#TRPBF

Mfr. #:
Buy LTC6406IMS8E#TRPBF
Manufacturer:
Analog Devices Inc.
Description:
High Speed Operational Amplifiers 800 MHz, Low Noise, Rail to Rail Input Differential Amplifier/Driver
Lifecycle:
New from this manufacturer.
Delivery:
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