LMH6551
www.ti.com
SNOSAK7C – FEBRUARY 2005 – REVISED MARCH 2013
LMH6551 Differential, High Speed Op Amp
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LMH6551
1
FEATURES
370 MHz
−3
dB Bandwidth (V
OUT
= 0.5 V
PP
)
50 MHz 0.1 dB Bandwidth
2400 V/µs Slew Rate
18 ns Settling Time to 0.05%
−94/−96
dB HD2/HD3 @ 5 MHz
DESCRIPTION
The LMH™6551 is a high performance voltage
feedback differential amplifier. The LMH6551 has the
high speed and low distortion necessary for driving
high performance ADCs as well as the current
handling capability to drive signals over balanced
transmission lines like CAT 5 data cables. The
LMH6551 can handle a wide range of video and data
formats.
With external gain set resistors, the LMH6551 can be
used at any desired gain. Gain flexibility coupled with
high speed makes the LMH6551 suitable for use as
an IF amplifier in high performance communications
equipment.
The LMH6551 is available in the space saving SOIC
and VSSOP packages.
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•
•
•
•
23
APPLICATIONS
•
•
•
•
•
•
•
Differential AD Driver
Video Over Twisted Pair
Differential Line Driver
Single End to Differential Converter
High Speed Differential Signaling
IF/RF Amplifier
SAW Filter Buffer/Driver
Typical Application
Figure 1. Single Ended to Differential ADC Driver
R
F
A
V
, R
IN
R
S
V
S
V
I
R
G
V
+
R
O
+
V
CM
-
+
V
O
R
O
IN-
a
R
T
ADC
IN+
-
R
M
R
G
V
-
R
F
For R
M
R
G
:
DesignTarget:
1) Set R
T
1
1
R
S
1
R
IN
A
v
V
O
R
F
#
V
I
R
G
R
IN
#
2R
G
(1 A
v
)
2 A
v
2) Set R
M
R
T
||R
S
1
2
3
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
LMH is a trademark of Texas Instruments.
All other trademarks are the property of their respective owners.
Copyright © 2005–2013, Texas Instruments Incorporated
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
LMH6551
SNOSAK7C – FEBRUARY 2005 – REVISED MARCH 2013
www.ti.com
Connection Diagram
-IN
1
8
+IN
V
CM
2
-
+
7
NC
V+
3
6
V-
+OUT
4
5
-OUT
Figure 2. 8-Pin SOIC & VSSOP - Top View
See Package Number D0008A and DGK0008A
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam
during storage or handling to prevent electrostatic damage to the MOS gates.
Absolute Maximum Ratings
ESD Tolerance
(3)
(1) (2)
Human Body Model
Machine Model
Supply Voltage
Common Mode Input Voltage
Maximum Input Current (pins 1, 2, 7, 8)
Maximum Output Current (pins 4, 5)
Maximum Junction Temperature
Soldering Information
See Product Folder at
www.ti.com
and
SNOA549
(1)
(2)
(3)
(4)
2000V
200V
13.2V
±Vs
30mA
(4)
150°C
Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for
which the device is intended to be functional, but specific performance is not ensured. For ensured specifications, see the Electrical
Characteristics tables.
If Military/Aerospace specified devices are required, please contact the Texas Instruments Sales Office/ Distributors for availability and
specifications.
Human body model: 1.5 kΩ in series with 100 pF. Machine model: 0Ω in series with 200pF.
The maximum output current (I
OUT
) is determined by device power dissipation limitations.
(1)
Operating Ratings
Operating Temperature Range
Storage Temperature Range
Total Supply Voltage
Package Thermal Resistance (θ
JA
)
8-Pin VSSOP
8-Pin SOIC
(1)
(2)
(2)
−40°C
to +125°C
−65°C
to +150°C
3V to 12V
235°C/W
150°C/W
Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for
which the device is intended to be functional, but specific performance is not ensured. For ensured specifications, see the Electrical
Characteristics tables.
The maximum power dissipation is a function of T
J(MAX)
,
θ
JA
and T
A
. The maximum allowable power dissipation at any ambient
temperature is P
D
= (T
J(MAX)
— T
A
)/
θ
JA
. All numbers apply for package soldered directly into a 2 layer PC board with zero air flow.
2
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LMH6551
Copyright © 2005–2013, Texas Instruments Incorporated
LMH6551
www.ti.com
SNOSAK7C – FEBRUARY 2005 – REVISED MARCH 2013
±5V Electrical Characteristics
(1)
Single ended in differential out, T
A
= 25°C, G = +1, V
S
= ±5V, V
CM
= 0V, R
F
= R
G
= 365Ω, R
L
= 500Ω; Unless specified
Boldface
limits apply at the temperature extremes.
Symbol
SSBW
LSBW
Parameter
Small Signal
−3
dB Bandwidth
Large Signal
−3
dB Bandwidth
Large Signal
−3
dB Bandwidth
0.1 dB Bandwidth
Slew Rate
Rise/Fall Time
Settling Time
Common Mode Small Signal
Bandwidth
Distortion and Noise Response
HD2
HD2
HD3
HD3
e
n
i
n
V
OSD
Input Referred Voltage Noise
Input Referred Noise Current
Input Offset Voltage
Input Offset Voltage Average
Temperature Drift
I
BI
Input Bias Current
Input Bias Current Average
Temperature Drift
Input Bias Difference
CMRR
R
IN
C
IN
CMVR
Common Mode Rejection Ratio
Input Resistance
Input Capacitance
Input Common Mode Voltage Range
V
O
= 2 V
PP
, f = 5 MHz, R
L
=800Ω
V
O
= 2 V
PP
, f = 20MHz, R
L
=800Ω
V
O
= 2 V
PP
, f = 5 MHz, R
L
=800Ω
V
O
= 2 V
PP
, f = 20 MHz, R
L
=800Ω
Freq
≥
1 MHz
Freq
≥
1 MHz
Differential Mode, V
ID
= 0, V
CM
= 0
(5)
Conditions
V
OUT
= 0.5 V
PP
V
OUT
= 2 V
PP
V
OUT
= 4 V
PP
V
OUT
= 2 V
PP
4V Step
2V Step
2V Step, 0.05%
V
CM
bypass capacitor removed
(4)
Min
(2)
Typ
(3)
Max
(2)
Units
MHz
MHz
MHz
MHz
V/μs
ns
ns
MHz
AC Performance (Differential)
370
340
320
50
2400
1.8
18
200
V
CM
Pin AC Performance (Common Mode Feedback Amplifier)
−94
−85
−96
−72
6.0
1.5
0.5
−0.8
-4
−2.6
0.03
72
80
5
1
+3.1
−4.6
+3.2
−4.7
0.5
8.2
−2
±5
±8
0
-10
±4
±6
dBc
dBc
dBc
dBc
nV/√Hz
pA/√Hz
mV
µV/°C
µA
nA/°C
µA
dBc
MΩ
pF
V
Input Characteristics (Differential)
(6)
(5)
Difference in Bias currents between the
two inputs
DC, V
CM
= 0V, V
ID
= 0V
Differential
Differential
CMRR > 53dB
V
CM
Pin Input Characteristics (Common Mode Feedback Amplifier)
V
OSC
Input Offset Voltage
Input Offset Voltage Average
Temperature Drift
Input Bias Current
Common Mode, V
ID
= 0
(5)
mV
µV/°C
μA
(6)
(1)
(2)
(3)
(4)
(5)
(6)
Electrical Table values apply only for factory testing conditions at the temperature indicated. Factory testing conditions result in very
limited self-heating of the device such that T
J
= T
A
. No specification of parametric performance is indicated in the electrical tables under
conditions of internal self-heating where T
J
> T
A
.
Limits are 100% production tested at 25°C. Limits over the operating temperature range are specified through correlation using
Statistical Quality Control (SQC) methods.
Typical numbers are the most likely parametric norm.
Slew Rate is the average of the rising and falling edges.
Drift determined by dividing the change in parameter at temperature extremes by the total temperature change.
Negative input current implies current flowing out of the device.
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LMH6551
3
Copyright © 2005–2013, Texas Instruments Incorporated
LMH6551
SNOSAK7C – FEBRUARY 2005 – REVISED MARCH 2013
www.ti.com
±5V Electrical Characteristics
(1)
(continued)
Single ended in differential out, T
A
= 25°C, G = +1, V
S
= ±5V, V
CM
= 0V, R
F
= R
G
= 365Ω, R
L
= 500Ω; Unless specified
Boldface
limits apply at the temperature extremes.
Symbol
V
CM
CMRR
Input Resistance
Common Mode Gain
Output Performance
Output Voltage Swing
Single Ended, Peak to Peak
±7.38
±7.18
±3.69
±50
±7.8
±3.8
±65
140
−70
V
V
mA
mA
dB
ΔV
O,CM
/ΔV
CM
0.995
Parameter
Conditions
V
ID
= 0V, 1V step on V
CM
pin, measure
V
OD
Min
70
(2)
Typ
75
25
(3)
Max
(2)
Units
dB
kΩ
0.999
1.005
V/V
Output Common Mode Voltage Range V
ID
= 0 V,
I
OUT
I
SC
Linear Output Current
Short Circuit Current
Output Balance Error
V
OUT
= 0V
Output Shorted to Ground
V
IN
= 3V Single Ended
(7)
l
ΔV
OUT
Common Mode
/ΔV
OUT
DIfferential , V
OUT
= 0.5 Vpp
Differential, f = 10 MHz
Differential
DC,
ΔV
S
= ±1V
R
L
=
∞
Miscellaneous Performance
A
VOL
PSRR
Open Loop Gain
Power Supply Rejection Ratio
Supply Current
(7)
70
74
11
90
12.5
14.5
16.5
dB
dB
mA
The maximum output current (I
OUT
) is determined by device power dissipation limitations.
(1)
5V Electrical Characteristics
Single ended in differential out, T
A
= 25°C, G = +1, V
S
= 5V, V
CM
= 2.5V, R
F
= R
G
= 365Ω, R
L
= 500Ω; Unless
specifiedBoldface limits apply at the temperature extremes.
Symbol
SSBW
LSBW
Parameter
Small Signal
−3
dB Bandwidth
Large Signal
−3
dB Bandwidth
0.1 dB Bandwidth
Slew Rate
Rise/Fall Time, 10% to 90%
Settling Time
Common Mode Small Signal
Bandwidth
Distortion and Noise Response
HD2
HD2
HD3
HD3
e
n
i
n
(1)
(2)
(3)
(4)
Input Referred Noise Voltage
Input Referred Noise Current
3 Harmonic Distortion
rd
Conditions
R
L
= 500Ω, V
OUT
= 0.5 V
PP
R
L
= 500Ω, V
OUT
= 2 V
PP
V
OUT
= 2 V
PP
4V Step
(4)
4V Step
4V Step, 0.05%
Min
(2)
Typ
(3)
Max
(2)
Units
MHz
MHz
MHz
V/μs
ns
ns
MHz
350
300
50
1800
2
17
170
V
CM
Pin AC Performance (Common Mode Feedback Amplifier)
2
nd
Harmonic Distortion
V
O
= 2 V
PP
, f = 5 MHz, R
L
=800Ω
V
O
= 2 V
PP
, f = 20 MHz, R
L
=800Ω
V
O
= 2 V
PP
, f = 5 MHz, R
L
=800Ω
V
O
= 2 V
PP
, f = 20 MHz, R
L
=800Ω
Freq
≥
1 MHz
Freq
≥
1 MHz
−84
−69
−93
−67
6.0
1.5
dBc
dBc
dBc
dBc
nV/√Hz
pA/√Hz
Electrical Table values apply only for factory testing conditions at the temperature indicated. Factory testing conditions result in very
limited self-heating of the device such that T
J
= T
A
. No specification of parametric performance is indicated in the electrical tables under
conditions of internal self-heating where T
J
> T
A
.
Limits are 100% production tested at 25°C. Limits over the operating temperature range are specified through correlation using
Statistical Quality Control (SQC) methods.
Typical numbers are the most likely parametric norm.
Slew Rate is the average of the rising and falling edges.
4
Submit Documentation Feedback
Product Folder Links:
LMH6551
Copyright © 2005–2013, Texas Instruments Incorporated
LMH6551
www.ti.com
SNOSAK7C – FEBRUARY 2005 – REVISED MARCH 2013
5V Electrical Characteristics
(1)
(continued)
Single ended in differential out, T
A
= 25°C, G = +1, V
S
= 5V, V
CM
= 2.5V, R
F
= R
G
= 365Ω, R
L
= 500Ω; Unless
specifiedBoldface limits apply at the temperature extremes.
Symbol
V
OSD
Parameter
Input Offset Voltage
Input Offset Voltage Average
Temperature Drift
I
BIAS
Input Bias Current
Input Bias Current Average
Temperature Drift
Input Bias Current Difference
CMRR
Common-Mode Rejection Ratio
Input Resistance
Input Capacitance
V
ICM
Input Common Mode Range
Conditions
Differential Mode, V
ID
= 0, V
CM
= 0
(5)
Min
(2)
Typ
(3)
Max
±4
±6
(2)
Units
mV
µV/°C
Input Characteristics (Differential)
0.5
−0.8
−4
−3
0.03
70
78
5
1
+3.1
+0.4
+3.2
+0.3
0.5
5.8
3
V
ID
= 0,
1V step on V
CM
pin, measure V
OD
V
CM
pin to ground
ΔV
O,CM
/ΔV
CM
Single Ended, Peak to Peak, V
S
= ±2.5V,
V
CM
= 0V
V
OUT
= 0V Differential
Output Shorted to Ground
V
IN
= 3V Single Ended
(7)
V
ID
= 0, V
CM
pin = 1.2V and 3.8V
ΔV
OUT
Common Mode /ΔV
OUT
DIfferential,
V
OUT
= 1Vpp Differential, f = 10 MHz
DC, Differential
DC,
ΔV
S
= ±0.5V
R
L
=
∞
72
10
3.72
1.23
0.995
±2.4
±45
70
75
25
0.991
±2.8
±60
230
3.8
1.2
−65
1.005
±5
±8
mV
µV/°C
μA
dB
kΩ
V/V
V
mA
mA
V
dB
0
-10
(6)
μA
nA/°C
µA
dBc
MΩ
pF
(5)
Difference in Bias currents between the
two inputs
DC, V
ID
= 0V
Differential
Differential
CMRR > 53 dB
V
CM
Pin Input Characteristics (Common Mode Feedback Amplifier)
Input Offset Voltage
Input Offset Voltage Average
Temperature Drift
Input Bias Current
V
CM
CMRR
Input Resistance
Common Mode Gain
Output Performance
V
OUT
I
OUT
I
SC
CMVR
Output Voltage Swing
Linear Output Current
Output Short Circuit Current
Output Common Mode Voltage
Range
Output Balance Error
Miscellaneous Performance
Open Loop Gain
PSRR
I
S
(5)
(6)
(7)
Power Supply Rejection Ratio
Supply Current
70
88
11.5
13.5
15.5
dB
dB
mA
Common Mode, V
ID
= 0
Drift determined by dividing the change in parameter at temperature extremes by the total temperature change.
Negative input current implies current flowing out of the device.
The maximum output current (I
OUT
) is determined by device power dissipation limitations.
Copyright © 2005–2013, Texas Instruments Incorporated
Submit Documentation Feedback
Product Folder Links:
LMH6551
5
