LM6172AMJRQML [TI]
VIDEO AMPLIFIER, CDIP8, CERDIP-8;
| 型号： | LM6172AMJRQML |
| 厂家： | 
TEXAS INSTRUMENTS |
| 描述： | VIDEO AMPLIFIER, CDIP8, CERDIP-8 放大器 CD |
| 文件： | 总22页 (文件大小：640K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
National Semiconductor is now part of
Texas Instruments.
Search http://www.ti.com/ for the latest technical
information and details on our current products and services.
May 1999
LM6172
Dual High Speed, Low Power, Low Distortion, Voltage
Feedback Amplifiers
General Description
Features
The LM6172 is a dual high speed voltage feedback amplifier.
It is unity-gain stable and provides excellent DC and AC per-
formance. With 100 MHz unity-gain bandwidth, 3000V/µs
slew rate and 50 mA of output current per channel, the
LM6172 offers high performance in dual amplifiers; yet it
only consumes 2.3 mA of supply current each channel.
(Typical Unless Otherwise Noted)
n Easy to Use Voltage Feedback Topology
n High Slew Rate 3000V/µs
n Wide Unity-Gain Bandwidth 100 MHz
n Low Supply Current 2.3 mA/Channel
n High Output Current 50 mA/channel
±
The LM6172 operates on 15V power supply for systems
±
±
n Specified for 15V and 5V Operation
requiring large voltage swings, such as ADSL, scanners and
±
ultrasound equipment. It is also specified at 5V power sup-
Applications
n Scanner I-to-V Converters
n ADSL/HDSL Drivers
ply for low voltage applications such as portable video sys-
tems.
™
The LM6172 is built with National’s advanced VIP III (Ver-
tically Integrated PNP) complementary bipolar process. See
the LM6171 datasheet for a single amplifier with these same
features.
n Multimedia Broadcast Systems
n Video Amplifiers
n NTSC, PAL® and SECAM Systems
n ADC/DAC Buffers
n Pulse Amplifiers and Peak Detectors
LM6172 Driving Capacitive Load
DS012581-44
DS012581-50
Connection Diagram
8-Pin DIP/SO
DS012581-1
Top View
™
VIP is a trademark of National Semiconductor Corporation.
PAL® is a registered trademark of and used under license from Advanced Micro Devices, Inc.
© 1999 National Semiconductor Corporation
DS012581
www.national.com
Ordering Information
Package
Temperature Range
Industrial
Transport
Media
NSC
Drawing
Military
−40˚C to +85˚C
LM6172IN
−55˚C to +125˚C
8-Pin DIP
Rails
Rails
Trays
N08E
J08A
8-Pin CDIP
LM6172AMJ-QML
LM6172AMWG-QML
5962-95604
5962-95604
10-Pin Ceramic
SOIC
WG10A
8-Pin
LM6172IM
Rails
M08A
Small Outline
LM6172IMX
Tape and Reel
www.national.com
2
Absolute Maximum Ratings (Note 1)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Maximum Junction Temperature
(Note 4)
150˚C
Operating Ratings(Note 1)
ESD Tolerance (Note 2)
Supply Voltage
5.5V ≤ VS ≤ 36V
Human Body Model
Machine Model
Supply Voltage (V+ − V−)
Differential Input Voltage (Note 9)
Output Short Circuit to Ground
(Note 3)
3 kV
300V
36V
Junction Temperature Range
LM6172I
−40˚C ≤ TJ ≤ +85˚C
Thermal Resistance (θJA
)
±
10V
N Package, 8-Pin Molded DIP
95˚C/W
M Package, 8-Pin Surface Mount
160˚C/W
Continuous
Storage Temp. Range
−65˚C to +150˚C
±
15V DC Electrical Characteristics
+
−
=
=
= = =
−15V, VCM 0V, and RL 1 kΩ. Boldface
Unless otherwise specified, all limits guaranteed for TJ 25˚C,V
limits apply at the temperature extremes
+15V, V
Typ
LM6172I
(Note 5)
Symbol
VOS
Parameter
Input Offset Voltage
Conditions
Limit
Units
(Note 5)
0.4
6
3
mV
max
4
TC VOS
Input Offset Voltage
Average Drift
µV/˚C
IB
Input Bias Current
1.2
0.02
3
4
2
3
µA
max
µA
IOS
Input Offset Current
Input Resistance
max
MΩ
RIN
Common Mode
Differential Mode
40
4.9
14
RO
Open Loop Output Resistance
Common Mode Rejection Ratio
Ω
dB
=
±
CMRR
VCM
10V
110
70
65
min
dB
=
±
±
PSRR
AV
Power Supply Rejection Ratio
VS
15V to 5V
95
86
75
70
min
dB
=
Large Signal Voltage
Gain (Note 6)
RL 1 kΩ
80
75
min
dB
=
RL 100Ω
78
65
60
min
V
=
VO
Output Swing
RL 1 kΩ
13.2
−13.1
9
12.5
12
min
V
−12.5
−12
6
max
V
=
RL 100Ω
5
min
V
−8.5
90
−6
−5
max
mA
min
mA
max
mA
mA
mA
=
Continuous Output Current
(Open Loop) (Note 7)
Sourcing, RL 100Ω
60
50
=
Sinking, RL 100Ω
−85
−60
−50
ISC
Output Short Circuit
Current
Sourcing
107
−105
4.6
Sinking
IS
Supply Current
Both Amplifiers
8
3
www.national.com
±
15V DC Electrical Characteristics (Continued)
+
−
=
=
= = =
−15V, VCM 0V, and RL 1 kΩ. Boldface
Unless otherwise specified, all limits guaranteed for TJ 25˚C,V
limits apply at the temperature extremes
+15V, V
Typ
(Note 5)
LM6172I
Limit
Symbol
Parameter
Conditions
Units
(Note 5)
9
max
±
15V AC Electrical Characteristics
+
−
=
=
=
=
=
Unless otherwise specified, TJ 25˚C, V
+15V, V
−15V, VCM 0V, and RL 1 kΩ
LM6172I
Symbol
SR
Parameter
Conditions
Typ
(Note 5)
3000
2500
100
160
62
Units
=
=
Slew Rate
AV +2, VIN 13 VPP
V/µs
V/µs
MHz
MHz
MHz
MHz
Deg
ns
=
=
AV +2, VIN 10 VPP
Unity-Gain Bandwidth
−3 dB Frequency
=
AV +1
=
AV +2
Bandwidth Matching between Channels
Phase Margin
2
φm
40
=
=
±
ts
Settling Time (0.1%)
AV −1, VOUT
5V,
65
=
RL 500Ω
AD
φD
en
Differential Gain (Note 8)
Differential Phase (Note 8)
Input-Referred
0.28
0.6
12
%
Deg
=
=
f
f
1 kHz
1 kHz
Voltage Noise
in
Input-Referred
1
Current Noise
=
=
=
=
Second Harmonic
Distortion (Note 10)
Third Harmonic
Distortion (Note 10)
f
f
f
f
10 kHz
5 MHz
10 kHz
5 MHz
−110
−50
dB
dB
dB
dB
−105
−50
±
5V DC Electrical Characteristics
+
−
=
=
= = =
−5V, VCM 0V, and RL 1 kΩ. Boldface
Unless otherwise specified, all limits guaranteed for TJ 25˚C, V
limits apply at the temperature extremes
+5V, V
Typ
LM6172I
(Note 5)
Symbol
VOS
Parameter
Input Offset Voltage
Conditions
Limit
Units
(Note 5)
0.1
4
3
mV
max
4
TC VOS
Input Offset Voltage
Average Drift
µV/˚C
IB
Input Bias Current
1.4
0.02
2.5
3.5
1.5
2.2
µA
max
µA
IOS
Input Offset Current
Input Resistance
max
MΩ
RIN
Common Mode
Differential Mode
40
4.9
14
RO
Output Resistance
Ω
=
±
CMRR
Common Mode Rejection Ratio
VCM
2.5V
105
70
dB
www.national.com
4
±
5V DC Electrical Characteristics (Continued)
+
−
=
=
= = =
−5V, VCM 0V, and RL 1 kΩ. Boldface
Unless otherwise specified, all limits guaranteed for TJ 25˚C, V
limits apply at the temperature extremes
+5V, V
Typ
(Note 5)
LM6172I
Limit
(Note 5)
65
Symbol
Parameter
Conditions
Units
min
dB
=
±
±
PSRR
Power Supply Rejection Ratio
VS
15V to 5V
95
82
75
70
min
dB
=
AV
Large Signal Voltage
Gain (Note 6)
RL 1 kΩ
70
65
min
dB
=
RL 100Ω
78
65
60
min
V
=
VO
Output Swing
RL 1 kΩ
3.4
−3.3
2.9
−2.7
29
3.1
3
min
V
−3.1
−3
max
V
=
RL 100Ω
2.5
2.4
min
V
−2.4
−2.3
25
max
mA
min
mA
max
mA
mA
mA
max
=
Sourcing, RL 100Ω
Continuous Output Current
(Open Loop) (Note 7)
24
=
Sinking, RL 100Ω
−27
−24
−23
ISC
Output Short Circuit
Current
Sourcing
93
−72
4.4
Sinking
IS
Supply Current
Both Amplifiers
6
7
±
5V AC Electrical Characteristics
+
−
=
=
=
=
=
Unless otherwise specified, TJ 25˚C, V
+5V, V
−5V, VCM 0V, and RL 1 kΩ.
LM61722
Typ
(Note 5)
Symbol
SR
Parameter
Conditions
Units
=
=
Slew Rate
AV +2, VIN 3.5 VPP
750
70
V/µs
MHz
MHz
MHz
Deg
ns
Unity-Gain Bandwidth
−3 dB Frequency
=
AV +1
130
45
=
AV +2
φm
Phase Margin
57
=
=
±
ts
Settling Time (0.1%)
AV −1, VOUT
1V,
72
=
RL 500Ω
AD
φD
en
Differential Gain (Note 8)
0.4
0.7
11
%
Differential Phase (Note 8)
Input-Referred
Deg
=
=
f
f
1 kHz
1 kHz
Voltage Noise
in
Input-Referred
1
Current Noise
=
=
=
Second Harmonic
Distortion (Note 10)
Third Harmonic
f
f
f
10 kHz
5 MHz
10 kHz
−110
−48
dB
dB
dB
−105
5
www.national.com
±
5V AC Electrical Characteristics (Continued)
+
−
=
=
=
=
=
Unless otherwise specified, TJ 25˚C, V
+5V, V
−5V, VCM 0V, and RL 1 kΩ.
LM61722
Typ
(Note 5)
Symbol
Parameter
Distortion (Note 10)
Conditions
Units
=
f
5 MHz
−50
dB
Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is in-
tended to be functional, but specific performance is not guaranteed. For guaranteed specifications and the test conditions, see the Electrical Characteristics.
Note 2: Human body model, 1.5 kΩ in series with 100 pF. Machine Model, 200Ω in series with 100 pF.
Note 3: Continuous short circuit operation can result in exceeding the maximum allowed junction temperature of 150˚C.
Note 4: The maximum power dissipation is a function of T
, θ , and T . The maximum allowable power dissipation at any ambient temperature is
A
J(max) JA
=
P
(T
− T )/θ . All numbers apply for packages soldered directly into a PC board.
JA
D
J(max)
A
Note 5: Typical Values represent the most likely parametric norm.
Note 6: All limits are guaranteed by testing or statistical analysis.
=
=
=
±
5V. For V
S
±
±
Note 7: Large signal voltage gain is the total output swing divided by the input signal required to produce that swing. For V
15V, V
5V,
S
OUT
=
±
V
1V.
OUT
Note 8: The open loop output current is the output swing with the 100Ω load resistor divided by that resistor.
=
=
L
Note 9: Differential gain and phase are measured with A
+2, V
IN
1 V at 3.58 MHz and both input and output 75Ω terminated.
PP
V
=
±
Note 10: Differential input voltage is applied at V
15V.
S
=
=
=
100Ω.
Note 11: Harmonics are measured with A
+2, V
IN
1 V and R
PP
V
=
Typical Performance Characteristics unless otherwise noted, TA 25˚C
Supply Voltage vs
Supply Current
Supply Current vs
Temperature
Input Offset Voltage
vs Temperature
DS012581-14
DS012581-15
DS012581-16
Input Bias Current vs
Temperature
Short Circuit Current vs
Temperature (Sourcing)
Short Circuit Current vs
Temperature (Sinking)
DS012581-18
DS012581-35
DS012581-17
www.national.com
6
=
Typical Performance Characteristics unless otherwise noted, TA 25˚C (Continued)
Output Voltage vs
Output Current
Output Voltage vs
Output Current
CMRR vs Frequency
=
±
(VS
15V)
=
±
(VS
5V)
DS012581-19
DS012581-36
DS012581-37
PSRR vs Frequency
PSRR vs Frequency
Open-Loop Frequency
Response
DS012581-20
DS012581-33
DS012581-21
Open-Loop Frequency
Response
Gain-Bandwidth Product
vs Supply Voltage
at Different Temperature
Large Signal Voltage
Gain vs Load
DS012581-22
DS012581-38
DS012581-23
7
www.national.com
=
Typical Performance Characteristics unless otherwise noted, TA 25˚C (Continued)
Large Signal Voltage
Gain vs Load
Input Voltage Noise
vs Frequency
Input Voltage Noise
vs Frequency
DS012581-39
DS012581-40
DS012581-41
Input Current Noise
vs Frequency
Input Current Noise
vs Frequency
Slew Rate vs
Supply Voltage
DS012581-42
DS012581-25
DS012581-43
Slew Rate vs
Input Voltage
Large Signal Pulse Response
=
=
±
AV +1, VS
15V
DS012581-2
DS012581-26
Small Signal Pulse Response
Large Signal Pulse Response
Small Signal Pulse Response
=
=
=
=
±
AV +1, VS
=
=
±
±
AV +1, VS
15V
5V
AV +1, VS
5V
DS012581-3
DS012581-4
DS012581-5
www.national.com
8
=
Typical Performance Characteristics unless otherwise noted, TA 25˚C (Continued)
Large Signal Pulse Response
Small Signal Pulse Response
Large Signal Pulse Response
=
=
=
=
±
AV +2, VS
=
=
±
±
AV +2, VS
15V
15V
AV +2, VS
5V
DS012581-6
DS012581-7
DS012581-8
Small Signal Pulse Response
Large Signal Pulse Response
Small Signal Pulse Response
=
=
=
=
±
AV −1, VS
=
=
±
±
AV +2, VS
5V
15V
AV −1, VS
15V
DS012581-9
DS012581-10
DS012581-11
Large Signal Pulse Response
Small Signal Pulse Response
Closed Loop Frequency
Response vs Supply Voltage
=
=
=
=
±
AV −1, VS
±
AV −1, VS
5V
5V
=
(AV +1)
DS012581-12
DS012581-13
DS012581-28
9
www.national.com
=
Typical Performance Characteristics unless otherwise noted, TA 25˚C (Continued)
Closed Loop Frequency
Response vs Supply Voltage
Harmonic Distortion
vs Frequency
Harmonic Distortion
vs Frequency
=
(AV +2)
=
±
(VS
15V)
=
±
(VS
5V)
DS012581-29
DS012581-30
DS012581-34
Crosstalk Rejection vs
Frequency
Maximum Power Dissipation
vs Ambient Temperature
DS012581-32
DS012581-31
www.national.com
10
1
⁄2 LM6172 Simplified Schematic
DS012581-55
Application Notes
LM6172 Performance Discussion
Reducing Settling Time
The LM6172 is a dual high-speed, low power, voltage feed-
back amplifier. It is unity-gain stable and offers outstanding
performance with only 2.3 mA of supply current per channel.
The combination of 100 MHz unity-gain bandwidth,
3000V/µs slew rate, 50 mA per channel output current and
other attractive features makes it easy to implement the
LM6172 in various applications. Quiescent power of the
The LM6172 has a very fast slew rate that causes overshoot
and undershoot. To reduce settling time on LM6172, a 1 kΩ
resistor can be placed in series with the input signal to de-
crease slew rate. A feedback capacitor can also be used to
reduce overshoot and undershoot. This feedback capacitor
serves as a zero to increase the stability of the amplifier cir-
cuit. A 2 pF feedback capacitor is recommended for initial
evaluation. When the LM6172 is configured as a buffer, a
feedback resistor of 1 kΩ must be added in parallel to the
feedback capacitor.
±
LM6172 is 138 mW operating at 15V supply and 46 mW at
±
5V supply.
Another possible source of overshoot and undershoot
comes from capacitive load at the output. Please see the
section “Driving Capacitive Loads” for more detail.
LM6172 Circuit Operation
The class AB input stage in LM6172 is fully symmetrical and
has a similar slewing characteristic to the current feedback
amplifiers. In the LM6172 Simplified Schematic, Q1 through
Q4 form the equivalent of the current feedback input buffer,
Driving Capacitive Loads
RE the equivalent of the feedback resistor, and stage A buff-
Amplifiers driving capacitive loads can oscillate or have ring-
ing at the output. To eliminate oscillation or reduce ringing,
an isolation resistor can be placed as shown in Figure 1. The
combination of the isolation resistor and the load capacitor
forms a pole to increase stability by adding more phase mar-
gin to the overall system. The desired performance depends
on the value of the isolation resistor; the bigger the isolation
resistor, the more damped (slow) the pulse response be-
comes. For LM6172, a 50Ω isolation resistor is recom-
mended for initial evaluation.
ers the inverting input. The triple-buffered output stage iso-
lates the gain stage from the load to provide low output im-
pedance.
LM6172 Slew Rate Characteristic
The slew rate of LM6172 is determined by the current avail-
able to charge and discharge an internal high impedance
node capacitor. This current is the differential input voltage
divided by the total degeneration resistor RE. Therefore, the
slew rate is proportional to the input voltage level, and the
higher slew rates are achievable in the lower gain configura-
tions.
When a very fast large signal pulse is applied to the input of
an amplifier, some overshoot or undershoot occurs. By plac-
ing an external series resistor such as 1 kΩ to the input of
LM6172, the slew rate is reduced to help lower the over-
shoot, which reduces settling time.
11
www.national.com
board and can affect frequency performance. It is better to
solder the amplifier directly into the PC board without using
any socket.
Driving Capacitive Loads (Continued)
USING PROBES
Active (FET) probes are ideal for taking high frequency mea-
surements because they have wide bandwidth, high input
impedance and low input capacitance. However, the probe
ground leads provide a long ground loop that will produce er-
rors in measurement. Instead, the probes can be grounded
directly by removing the ground leads and probe jackets and
using scope probe jacks.
DS012581-45
COMPONENTS SELECTION AND FEEDBACK
RESISTOR
FIGURE 1. Isolation Resistor Used
to Drive Capacitive Load
It is important in high speed applications to keep all compo-
nent leads short because wires are inductive at high fre-
quency. For discrete components, choose carbon
composition-type resistors and mica-type capacitors. Sur-
face mount components are preferred over discrete compo-
nents for minimum inductive effect.
Large values of feedback resistors can couple with parasitic
capacitance and cause undesirable effects such as ringing
or oscillation in high speed amplifiers. For LM6172, a feed-
back resistor less than 1 kΩ gives optimal performance.
Compensation for Input
Capacitance
The combination of an amplifier’s input capacitance with the
gain setting resistors adds a pole that can cause peaking or
oscillation. To solve this problem, a feedback capacitor with
a value
DS012581-51
FIGURE 2. The LM6172 Driving a 510 pF Load
with a 30Ω Isolation Resistor
>
CF (RG x CIN)/RF
can be used to cancel that pole. For LM6172, a feedback ca-
pacitor of 2 pF is recommended. Figure 4 illustrates the com-
pensation circuit.
DS012581-52
FIGURE 3. The LM6172 Driving a 220 pF Load
with a 50Ω Isolation Resistor
DS012581-46
FIGURE 4. Compensating for Input Capacitance
Layout Consideration
Power Supply Bypassing
PRINTED CIRCUIT BOARDS AND HIGH SPEED OP
AMPS
Bypassing the power supply is necessary to maintain low
power supply impedance across frequency. Both positive
and negative power supplies should be bypassed individu-
ally by placing 0.01 µF ceramic capacitors directly to power
supply pins and 2.2 µF tantalum capacitors close to the
power supply pins.
There are many things to consider when designing PC
boards for high speed op amps. Without proper caution, it is
very easy to have excessive ringing, oscillation and other de-
graded AC performance in high speed circuits. As a rule, the
signal traces should be short and wide to provide low induc-
tance and low impedance paths. Any unused board space
needs to be grounded to reduce stray signal pickup. Critical
components should also be grounded at a common point to
eliminate voltage drop. Sockets add capacitance to the
www.national.com
12
Power Supply Bypassing (Continued)
DS012581-54
FIGURE 7. Improperly Terminated Signal
DS012581-47
FIGURE 5. Power Supply Bypassing
To minimize reflection, coaxial cable with matching charac-
teristic impedance to the signal source should be used. The
other end of the cable should be terminated with the same
value terminator or resistor. For the commonly used cables,
RG59 has 75Ω characteristic impedance, and RG58 has
50Ω characteristic impedance.
Termination
In high frequency applications, reflections occur if signals
are not properly terminated. Figure 6 shows a properly termi-
nated signal while Figure 7 shows an improperly terminated
signal.
Power Dissipation
The maximum power allowed to dissipate in a device is de-
fined as:
=
PD (TJ(max) − TA)/θJA
Where PD is the power dissipation in a device
TJ(max) is the maximum junction temperature
TA is the ambient temperature
θJA is the thermal resistance of a particular package
For example, for the LM6172 in a SO-8 package, the maxi-
mum power dissipation at 25˚C ambient temperature is
780 mW.
Thermal resistance, θJA, depends on parameters such as
die size, package size and package material. The smaller
the die size and package, the higher θJA becomes. The 8-pin
DIP package has a lower thermal resistance (95˚C/W) than
that of 8-pin SO (160˚C/W). Therefore, for higher dissipation
capability, use an 8-pin DIP package.
DS012581-53
FIGURE 6. Properly Terminated Signal
The total power dissipated in a device can be calculated as:
=
PD PQ + PL
PQ is the quiescent power dissipated in a device with no load
connected at the output. PL is the power dissipated in the de-
vice with a load connected at the output; it is not the power
dissipated by the load.
Furthermore,
=
PQ
:
supply current x total supply voltage with no load
=
PL:
output current x (voltage difference between sup-
ply voltage and output voltage of the same supply)
For example, the total power dissipated by the LM6172 with
=
±
VS
15V and both channels swinging output voltage of
10V into 1 kΩ is
=
PD:
PQ + PL
=
:
:
:
2[(2.3 mA)(30V)] + 2[(10 mA)(15V − 10V)]
138 mW + 100 mW
=
=
238 mW
13
www.national.com
Application Circuits
I-to-V Converters
DS012581-48
Differential Line Driver
DS012581-49
www.national.com
14
Physical Dimensions inches (millimeters) unless otherwise noted
8-Lead Ceramic Dual-In-Line Package
Order Number LM6172AMJ-QML or 5962-9560401QPA
NS Package Number J08A
8-Lead (0.150" Wide) Molded Small Outline Package, JEDEC
Order Number LM6172IM or LM6172IMX
NS Package Number M08A
15
www.national.com
Physical Dimensions inches (millimeters) unless otherwise noted (Continued)
8-Lead (0.300" Wide) Molded Dual-In-Line Package
Order Number LM6172IN
NS Package Number N08E
LIFE SUPPORT POLICY
NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT
DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT AND GENERAL
COUNSEL OF NATIONAL SEMICONDUCTOR CORPORATION. As used herein:
1. Life support devices or systems are devices or
systems which, (a) are intended for surgical implant
into the body, or (b) support or sustain life, and
whose failure to perform when properly used in
accordance with instructions for use provided in the
labeling, can be reasonably expected to result in a
significant injury to the user.
2. A critical component is any component of a life
support device or system whose failure to perform
can be reasonably expected to cause the failure of
the life support device or system, or to affect its
safety or effectiveness.
National Semiconductor
Corporation
Americas
Tel: 1-800-272-9959
Fax: 1-800-737-7018
Email: support@nsc.com
National Semiconductor
Europe
National Semiconductor
Asia Pacific Customer
Response Group
Tel: 65-2544466
Fax: 65-2504466
National Semiconductor
Japan Ltd.
Tel: 81-3-5639-7560
Fax: 81-3-5639-7507
Fax: +49 (0) 1 80-530 85 86
Email: europe.support@nsc.com
Deutsch Tel: +49 (0) 1 80-530 85 85
English Tel: +49 (0) 1 80-532 78 32
Français Tel: +49 (0) 1 80-532 93 58
Italiano Tel: +49 (0) 1 80-534 16 80
Email: sea.support@nsc.com
www.national.com
National does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications.
National Semiconductor Company
Design
Purchasing Quality Company Jobs
Products > Analog - Amplifiers > Operational Amplifiers > High Speed > 50MHz > LM6172
Product Folder
LM6172
Dual High Speed, Low Power, Low Distortion Voltage Feedback Amplifiers
See Also: CLC428 - upgrade
Parametric Table
Generic P/N 6172
Contents
Channels (Channels)
2
l
l
l
l
l
General Description
Features
Applications
Datasheet
Package Availability, Models, Samples
& Pricing
Design Tools
Not Rail to
Rail
Input Output Type
Bandwidth, typ (MHz)
100
Slew Rate, typ (Volts/usec)
3000
Supply Current per Channel, typ
(mA)
l
l
2.30
Application Notes
Minimum Supply Voltage (Volt)
Maximum Supply Voltage (Volt)
Offset Voltage, Max (mV)
5.50
36
3,1.50
Input Bias Current, Temp Max
(nA)
4000
Output Current, typ (mA)
Voltage Noise, typ (nV/Hz)
Shut down
85
12
No
Feedback Type
Voltage
100
50
BW at Av+1 (MHz)
BW at Av+2 (MHz)
BW at Av+5 (MHz)
BW at Av+10 (MHz)
20
10
BW at Av+20 (MHz)
HD 2nd, typ (dB)
HD 3rd, typ (dB)
DG, typ (dB)
5
-50
-50
.28
DP, typ (%)
.60
Settling Time
65nS to 0.1%
General Description
The LM6172 is a dual high speed voltage feedback amplifier. It is unity-gain stable and
provides excellent DC and AC performance. With 100 MHz unity-gain bandwidth,
3000V/µs slew rate and 50 mA of output current per channel, the LM6172 offers high
performance in dual amplifiers; yet it only consumes 2.3 mA of supply current each channel.
The LM6172 operates on ±15V power supply for systems requiring large voltage swings,
such as ADSL, scanners and ultrasound equipment. It is also specified at ±5V power supply
for low voltage applications such as portable video systems.
The LM6172 is built with National's advanced VIP™ III (Vertically Integrated PNP)
complementary bipolar process. See the LM6171 datasheet for a single amplifier with these
same features.
Features
(Typical Unless Otherwise Noted)
l
l
l
l
l
l
Easy to Use Voltage Feedback Topology
High Slew Rate 3000V/µs
Wide Unity-Gain Bandwidth 100 MHz
Low Supply Current 2.3 mA/Channel
High Output Current 50 mA/channel
Specified for ±15V and ±5V Operation
Applications
l
l
l
l
l
l
l
Scanner I-to-V Converters
ADSL/HDSL Drivers
Multimedia Broadcast Systems
Video Amplifiers
NTSC, PAL™ and SECAM Systems
ADC/DAC Buffers
Pulse Amplifiers and Peak Detectors
Datasheet
Size
(in
Kbytes)
Title
Date
Receive via
Email
View
Online
Download
LM6172 Dual High Speed, Low Power, Low Distortion, Voltage Feedback
Amplifiers
551
Kbytes
17-Jun-
99
Receive via
Email
View Online Download
LM6172 Dual High Speed, Low Power, Low Distortion, Voltage Feedback
Amplifiers (JAPANESE)
7964
Kbytes
257
Kbytes
Receive via
Email
LM6172 Mil-Aero Datasheet MNLM6172AM-X
View Online Download
Please use Adobe Acrobat to view PDF file(s).
If you have trouble printing, see Printing Problems.
Package Availability, Models, Samples & Pricing
Samples
Package
Type
Models
SPICE
Budgetary Pricing
Quantity $US each
Std
Pack
Size
&
Package
Marking
Part Number
Status
Electronic
Orders
# pins
IBIS
tube
95
[logo]¢2¢T
LM61
Samples
Order Parts
LM6172IM
SOIC NARROW
8
Full production LM6172.MOD N/A
1K+
$1.6000 of
72IM
reel
$1.6300 of
2500
[logo]¢2¢T
LM61
.
Order Parts
LM6172IMX
LM6172IN
SOIC NARROW
MDIP
8
8
Full production LM6172.MOD N/A
Full production LM6172.MOD N/A
1K+
1K+
72IM
tube
$1.6000 of
40
Samples
[logo]¢U¢Z¢2¢T
LM6172IN
Order Parts
[logo]¢Z¢S¢4¢A$E
LM6172AMJR
QML 5962R
tube
of
N/A
LM6172AMJRQML
RM6172AMJRQML
5962-9560401QPA
Cerdip
Cerdip
Cerdip
8
8
Preliminary LM6172.MOD N/A
.
.
9560401QPA
[logo]¢Z¢S¢4¢A$E
RM6172AMJR
QML WAFER #
¢R
tube
of
N/A
Preliminary
N/A
N/A
[logo]¢Z¢S¢4¢A$E
LM6172AMJ-
QML 5962-
tube
$28.3000 of
40
.
Order Parts
8
Full production LM6172.MOD N/A
Preliminary LM6172.MOD N/A
25+
9560401QPA
[logo]¢Z¢S¢4¢A$E
LM6172AMWG
RQML 5962R
tray
of
N/A
LM6172AMWGRQML Ceramic SOIC
16
.
.
9560401QXA
[logo]¢Z¢S¢4¢A$E
LM6172AMWG
-QML 5962-
tray
5962-9560401QXA
Ceramic SOIC
16 Full production LM6172.MOD N/A
250+ $27.0000 of
42
9560401QXA
tube [logo]¢Z¢S¢4¢A$E
LM6172AMJ-MLS
Cerdip
Cerdip
8
8
Preliminary LM6172.MOD N/A
Preliminary LM6172.MOD N/A
.
.
of
N/A
LM6172AMJ
-MLS
tube [logo]¢Z¢S¢4¢A$E
of
N/A
LM6172AMJ-QMLV
LM6172AMJ
-QMLV
Design Tools
Size
(in Kbytes)
Title
Date
Receive via Email
Download
View Online
Amplifiers Selection Guide software for Windows 8 Kbytes
31-Aug-2000
View
Please use Adobe Acrobat to view PDF file(s).
If you have trouble printing, see Printing Problems.
Application Notes
Size
(in Kbytes)
Title
Date
Receive via Email
Download
View Online
OA-26: OA-26 Designing High Speed Active Filters 392 Kbytes 24-Feb-99 View Online Download Receive via Email
Please use Adobe Acrobat to view PDF file(s).
If you have trouble printing, see Printing Problems.
[Information as of 2-Sep-2000]
Quick Search
Parametric
Search
System
Diagrams
Product
Tree
Home
About Languages . About the Site . About "Cookies"
National is QS 9000 Certified . Privacy/Security
Copyright © National Semiconductor Corporation
Preferences . Feedback
相关型号：
LM6172IMX/NOPB
IC 2 CHANNEL, VIDEO AMPLIFIER, PDSO8, 0.150 INCH, PLASTIC, SOIC-8, Audio/Video Amplifier
NSC
©2020 ICPDF网 联系我们和版权申明