LMH6657/LMH6658
270MHz Single Supply, Single & Dual Amplifiers
General Description
The LMH6657/6658 are low-cost operational amplifiers that
operate from a single supply with input voltage range ex-
tending below the V
-
. Based on easy to use voltage feed-
back topology and boasting fast slew rate (700V/s) and
high speed (140MHz GBWP), the LMH6657 (Single) and
LMH6658 (dual) can be used in high speed large signal
applications. These applications include instrumentation,
communication devices, set-top boxes, etc.
With a -3dB BW of 100MHz (A
V
= +2) and DG & DP of 0.03%
& 0.10 respectively, the LMH6657/6658 are well suited for
video applications. The output stage can typically supply
80mA into the load with a swing of about 1V from either rail.
For Industrial applications, the LMH6657/6658 are excellent
cost-saving choices. Input referred voltage noise is low and
the input voltage can extend below V
-
to ease amplification
of low level signals that could be at or near the system
ground. With low distortion and fast settling, LMH6657/6658
can provide buffering for A/D and D/A applications.
The LMH6657/6658 versatility and ease of use is extended
even further by offering these high slew rate , high speed Op
Amps in miniature packages such as SOT23-5, SC70,
SOIC-8, and MSOP-8. Refer to the Ordering Information
section for packaging options available for each device.
Features
V
S
= 5V, T
A
= 25C, R
L
= 100
(Typical values unless
specified)
n
-3dB BW (A
V
= +1)
270MHz
n
Supply voltage range
3V to 12V
n
Slew rate, (V
S
=
5V)
700V/s
n
Supply current
6.2mA/amp
n
Output current
+80/-90mA
n
Input common mode volt. 0.5V beyond V
-
, 1.7V from V
+
n
Output voltage swing (R
L
= 2k
)
0.8V from rails
n
Input voltage noise
11nV/
n
Input current noise
2.1pA/
n
DG error
0.03%
n
DP error
0.10
n
THD (5MHz)
-55dBc
n
Settling time (0.1%)
37ns
n
Fully characterized for 5V, and
5V
n
Output overdrive recovery
18ns
n
Output short circuit protected (Note 10)
n
No output phase reversal with CMVR exceeded
Applications
n
CD/DVD ROM
n
ADC buffer amp
n
Portable video
n
Current sense buffer
n
Portable communications
Connection Diagrams
SOT23-5/SC70-5 (LMH6657)
SOIC-8/MSOP-8 (LMH6658)
20053261
Top View
20053263
October 2004
LMH6657/LMH6658
270MHz
Single
Supply
,
Single
&
Dual
Amplifiers
2004 National Semiconductor Corporation
DS200532
www.national.com
Absolute Maximum Ratings
(Note 1)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
ESD Tolerance
Human Body Model
2KV(Note 2)
Machine Model
200V (Note 9)
V
IN
Differential
2.5V
Output Short Circuit Duration
(Note 3), (Note 11)
Input Current
10mA
Supply Voltage (V
+
- V
-
)
12.6V
Voltage at Input/Output pins
V
+
+0.8V, V
-
-0.8V
Soldering Information
Infrared or Convection (20 sec.)
235C
Wave Soldering (10 sec.)
260C
Storage Temperature Range
-65C to +150C
Junction Temperature (Note 4)
+150C
Operating Ratings
(Note 1)
Supply Voltage (V
+
V
-
)
3V to 12V
Operating Temperature Range
(Note 4)
-40C to +85C
Package Thermal Resistance (
JA
)(Note 4)
SC70
478C/W
SOT235
265C/W
MSOP-8
235C/W
SOIC-8
190C/W
5V Electrical Characteristics
Unless otherwise specified, all limits guaranteed for at T
J
= 25C, V
+
= 5V, V
-
= 0V, V
CM
= V
O
= V
+
/2, and R
L
= 100
(or as
specified) tied to V
+
/2. Boldface limits apply at the temperature extremes.
Symbol
Parameter
Conditions
Min
(Note 6)
Typ
(Note 5)
Max
(Note 6)
Units
GB
Gain Bandwidth Product
V
OUT
<
200mV
PP
140
MHz
SSBW
-3dB BW
A
V
= +1, V
OUT
= 200mV
PP
220
270
MHz
A
V
= +2 or -1, V
OUT
= 200mV
PP
100
GFP
Frequency Response Peaking
A
V
= +2, V
OUT
= 200mV
PP
,
DC to 100MHz
1.5
dB
GFR
Frequency Response Rolloff
A
V
= +2, V
OUT
= 200mV
PP
,
DC to 100MHz
0.5
dB
LPD
1
1 Linear Phase Deviation
A
V
= +2, V
OUT
= 200mV
PP
,
1
30
MHz
GF
0.1dB
0.1dB Gain Flatness
A
V
= +2,
0.1dB, V
OUT
= 200mV
PP
13
MHz
PBW
Full Power Bandwidth
-1dB, V
OUT
= 3V
PP
, A
V
= -1
55
MHz
DG
Differential Gain
NTSC, V
CM
= 2V, R
L
= 150
to
V
+
/2, Pos. Video Only
0.03
%
DP
Differential Phase
NTSC, V
CM
= 2V, R
L
=150
to V
+
/2
Pos. Video Only
0.1
deg
Time Domain Response
t
r
Rise and Fall Time
A
V
= +2, V
OUT
= 500mV
PP
3.3
ns
A
V
= -1, V
OUT
= 500mV
PP
3.4
OS
Overshoot, Undershoot
A
V
= +2, V
OUT
= 500mV
PP
18
%
t
s
Settling Time
V
O
= 2V
PP
,
0.1%, R
L
= 500
to
V
+
/2, A
V
= -1
37
ns
SR
Slew Rate (Note 8)
A
V
= -1, V
O
= 3V
PP
(Note 13)
470
V/s
A
V
= +2, V
O
= 3V
PP
(Note 13)
420
Distortion and Noise Response
HD2
2
nd
Harmonic Distortion
f = 5MHz, V
O
= 2V
PP
, A
V
= -1
-70
dBc
HD3
3
rd
Harmonic Distortion
f = 5MHz, V
O
= 2V
PP
, A
V
= -1
-57
dBc
THD
Total Harmonic Distortion
f = 5MHz, V
O
= 2V
PP
, A
V
= -1
-55.5
dBc
V
n
Input-Referred Voltage Noise
f = 100KHz
11
nV/
f = 1KHz
19
I
n
Input-Referred Current Noise
f = 100KHz
2.1
pA/
f = 1KHz
7.5
XTLKA
Cross-Talk Rejection
(LMH6658)
f = 5MHz, R
L
(SND) = 100
RCV: R
F
= R
G
= 1k
69
dB
Static, DC Performance
LMH6657/LMH6658
www.national.com
2
5V Electrical Characteristics
(Continued)
Unless otherwise specified, all limits guaranteed for at T
J
= 25C, V
+
= 5V, V
-
= 0V, V
CM
= V
O
= V
+
/2, and R
L
= 100
(or as
specified) tied to V
+
/2. Boldface limits apply at the temperature extremes.
Symbol
Parameter
Conditions
Min
(Note 6)
Typ
(Note 5)
Max
(Note 6)
Units
A
VOL
Large Signal Voltage Gain
V
O
= 1.25V to 3.75V,
R
L
= 2k to V
+
/2
85
95
dB
V
O
= 1.5V to 3.5V,
R
L
= 150
to V
+
/2
75
85
V
O
= 2V to 3V,
R
L
= 50
to V
+
/2
70
80
CMVR
Input Common-Mode Voltage
Range
CMRR
50dB
-0.2
-0.1
-0.5
V
3.0
2.8
3.3
V
OS
Input Offset Voltage
1.1
5
7
mV
TC V
OS
Input Offset Voltage Average
Drift
(Note 12)
2
V/C
I
B
Input Bias Current
(Note 7)
-5
-20
-30
A
TC
IB
Input Bias Current Average
Drift
(Note 12)
0.01
nA/C
I
OS
Input Offset Current
50
300
500
nA
CMRR
Common Mode Rejection
Ratio
V
CM
Stepped from 0V to 3.0V
72
82
dB
+PSRR
Positive Power Supply
Rejection Ratio
V
+
= 4.5V to 5.5V, V
CM
= 1V
72
82
dB
I
S
Supply Current (per channel)
No load
6.2
8.5
10
mA
Miscellaneous Performance
V
OH
Output Swing
High
R
L
= 2k to V
+
/2
4.10
3.8
4.25
V
R
L
= 150
to V
+
/2
4.00
3.70
4.19
R
L
= 75
to V
+
/2
3.85
3.50
4.15
V
OL
Output Swing
Low
R
L
= 2k to V
+
/2
900
1100
800
mV
R
L
= 150
to V
+
/2
970
1200
870
R
L
= 75
to V
+
/2
990
1250
885
I
OUT
Output Current
V
OUT
= 1V from either rail
40
+85, -105
mA
I
SC
Output Short CircuitCurrent
(Note 10)
Sourcing to V
+
/2
100
80
155
mA
Sinking to V
+
/2
100
80
220
R
IN
Common Mode Input
Resistance
3
M
C
IN
Common Mode Input
Capacitance
1.8
pF
R
OUT
Output Impedance
f = 1MHz, A
V
= +1
0.06
LMH6657/LMH6658
www.national.com
3
5V Electrical Characteristics
Unless otherwise specified, all limits guaranteed for at T
J
= 25C, V
+
= 5V, V
-
= -5V, V
CM
= V
O
, and R
L
= 100
(or as speci-
fied) tied to 0V. Boldface limits apply at the temperature extremes.
Symbol
Parameter
Conditions
Min
(Note 6)
Typ
(Note 5)
Max
(Note 6)
Units
GB
Gain Bandwidth Product
V
OUT
<
200mV
PP
140
MHz
SSBW
-3dB BW
A
V
= +1, V
OUT
= 200mV
PP
220
270
MHz
A
V
= +2 or -1, V
OUT
= 200mV
PP
100
GFP
Frequency Response Peaking
A
V
= +2, V
OUT
= 200mV
PP
,
DC to 100MHz
1.0
dB
GFR
Frequency Response Rolloff
A
V
= +2, V
OUT
= 200mV
PP
,
DC to 100MHz
0.9
dB
LPD
1
1 Linear Phase Deviation
A
V
= +2, V
OUT
= 200mV
PP
,
1
30
MHz
GF
0.1dB
0.1dB Gain Flatness
A
V
= +2,
0.1dB, V
OUT
= 200mV
PP
20
MHz
PBW
Full Power Bandwidth
-1dB, V
OUT
= 8V
PP
, A
V
= -1
30
MHz
DG
Differential Gain
NTSC, R
L
= 150
, Pos. or Neg.
Video
0.03
%
DP
Differential Phase
NTSC,R
L
= 150
, Pos. or Neg.
Video
0.1
deg
Time Domain Response
t
r
Rise and Fall Time
A
V
= +2, V
OUT
= 500mV
PP
3.3
ns
A
V
= -1, V
OUT
= 500mV
PP
3.3
OS
Overshoot, Undershoot
A
V
= +2, V
OUT
= 500mV
PP
16
%
t
s
Settling Time
V
O
= 5V
PP
,
0.1%, R
L
=500
,
A
V
= -1
35
ns
SR
Slew Rate (Note 8)
A
V
= -1, V
O
= 8V
PP
700
V/s
A
V
= +2, V
O
= 8V
PP
500
Distortion and Noise Response
HD2
2
nd
Harmonic Distortion
f = 5MHz, V
O
= 2V
PP
, A
V
= -1
-70
dBc
HD3
3
rd
Harmonic Distortion
f = 5MHz, V
O
= 2V
PP
, A
V
= -1
-57
dBc
THD
Total Harmonic Distortion
f = 5MHz, V
O
= 2V
PP
, A
V
= -1
-55.5
dBc
V
n
Input-Referred Voltage Noise
f = 100KHz
11
nV/
f = 1KHz
19
I
n
Input-Referred Current Noise
f = 100KHz
2.1
pA/
f = 1KHz
7.5
XTLKA
Cross-Talk Rejection
(LMH6658)
f = 5MHz, R
L
(SND) = 100
RCV: R
F
= R
G
= 1k
69
dB
Static, DC Performance
A
VOL
Large Signal Voltage Gain
V
O
= -3.75V to 3.75V, R
L
= 2k
87
100
dB
V
O
= -3.5V to 3.5V, R
L
= 150
80
90
V
O
= -3V to 3V, R
L
= 50
75
85
CMVR
Input Common-Mode Voltage
Range
CMRR
50dB
-5.2
-5.1
-5.5
V
3.0
2.8
3.3
V
OS
Input Offset Voltage
1.0
5
7
mV
TC V
OS
Input Offset Voltage Average
Drift
(Note 12)
2
V/C
I
B
Input Bias Current
(Note 7)
-5
-20
-30
A
TC
IB
Input Bias Current Average
Drift
(Note 12)
0.01
nA/C
LMH6657/LMH6658
www.national.com
4
5V Electrical Characteristics
(Continued)
Unless otherwise specified, all limits guaranteed for at T
J
= 25C, V
+
= 5V, V
-
= -5V, V
CM
= V
O
, and R
L
= 100
(or as speci-
fied) tied to 0V. Boldface limits apply at the temperature extremes.
Symbol
Parameter
Conditions
Min
(Note 6)
Typ
(Note 5)
Max
(Note 6)
Units
I
OS
Input Offset Current
50
300
500
nA
CMRR
Common ModeRejection Ratio
V
CM
Stepped from -5V to 3.0V
75
84
dB
+PSRR
Positive Power Supply
Rejection Ratio
V
+
= 4.5V to 5.5V, V
CM
= -4V
75
82
dB
-PSRR
Negative Power Supply
Rejection Ratio
V
-
= -4.5V to -5.5V
78
85
dB
I
S
Supply Current (per channel)
No load
6.5
9.0
11
mA
Miscellaneous Performance
V
OH
Output Swing
High
R
L
= 2k
4.10
3.80
4.25
V
R
L
= 150
4.00
3.70
4.20
R
L
= 75
3.85
3.50
4.18
V
OL
Output Swing
Low
R
L
= 2k
-4.05
-3.80
-4.19
V
R
L
= 150
-3.90
-3.65
-4.05
R
L
= 75
-3.80
-3.50
-4.00
I
OUT
Output Current
V
OUT
= 1V from either rail
45
+100, -110
mA
I
SC
Output Short Circuit Current
(Note 10)
Sourcing to Ground
120
100
180
mA
Sinking to Ground
120
100
230
R
IN
Common Mode Input
Resistance
4
M
C
IN
Common Mode Input
Capacitance
1.8
pF
R
OUT
Output Impedance
f = 1MHz, A
V
= +1
0.06
LMH6657/LMH6658
www.national.com
5
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