LT1395CS6#TRM [Linear]
LT1395 - Single 400MHz Current Feedback Amplifier; Package: SOT; Pins: 6; Temperature Range: 0°C to 70°C;
| 型号： | LT1395CS6#TRM |
| 厂家： | 
Linear |
| 描述： | LT1395 - Single 400MHz Current Feedback Amplifier; Package: SOT; Pins: 6; Temperature Range: 0°C to 70°C 放大器 光电二极管 |
| 文件： | 总20页 (文件大小：323K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
LT1395/LT1396/LT1397
Single/Dual/Quad 400MHz
Current Feedback Amplifier
FEATURES
DESCRIPTION
TheLT ®1395/LT1396/LT1397aresingle/dual/quad400MHz
current feedback amplifiers with an 800V/μs slew rate and
the ability to drive up to 80mA of output current.
n
400MHz Bandwidth on 5V (A = 1)
V
V
n
350MHz Bandwidth on 5V (A = 2, –1)
n
0.1dB Gain Flatness: 100MHz (A = 1, 2 and –1)
High Slew Rate: 800V/μs
Wide Supply Range: 2Vꢀ4Vꢁ to 6Vꢀ12Vꢁ
80mA Output Current
Low Supply Current: 4.6mA/Amplifier
LT1395: SO-8, TSOT23-5 and TSOT23-6 Packages
V
n
The LT1395/LT1396/LT1397 operate on all supplies from a
single 4V to 6V. At 5V, they draw 4.6mA of supply cur-
rent per amplifier. The LT1395CS6 also adds a shutdown
pin. When disabled, the LT1395CS6 draws virtually zero
supply current and its output becomes high impedance.
The LT1395CS6 will turn on in only 30ns and turn off in
40ns, making it ideal in spread spectrum and portable
equipment applications.
n
n
n
n
LT1396: SO-8, MSOP and Tiny 3mm
0.75mm DFN-8 Packages
×
3mm
×
LT1397: SO-14, SSOP-16 and Tiny 4mm
0.75mm DFN-14 Packages
Low Profile ꢀ1mmꢁ ThinSOT™ Package
×
3mm ×
For space limited applications, the LT1395 is available in
TSOT-23 packages, the LT1396 is available in a tiny 3mm ×
3mm × 0.75mm dual fine pitch leadless DFN package, and
the LT1397 is available in a tiny 4mm × 3mm × 0.75mm
DFN package.
n
APPLICATIONS
n
Cable Drivers
Video Amplifiers
MUX Amplifiers
High Speed Portable Equipment
n
The LT1395/LT1396/LT1397 are manufactured on Linear
Technology’s proprietary complementary bipolar process.
They have standard single/dual/quad pinouts and they are
optimized for use on supply voltages of 5V.
n
n
n
IF Amplifiers
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.
TYPICAL APPLICATION
Loop-Through Amplifier
Frequency Response
Unity-Gain Video Loop-Through Amplifier
R
10
R
1.02k
R
255Ω
R
255Ω
G2
G1
F1
F2
63.4Ω
0
NORMAL SIGNAL
–10
–20
–
–
1/2
LT1396
1/2
LT1396
V
OUT
V
+
V
–
3.01k
3.01k IN
IN
–30
–40
–50
–60
+
+
1% RESISTORS
FOR A GAIN OF G:
= G ꢀV + – V –ꢁ
V
R
R
COMMON MODE SIGNAL
0.67pF
12.1k
0.67pF
12.1k
OUT
IN IN
= R
F1
F2
= ꢀ5G – 1ꢁ R
G1
F2
R
F2
HIGH INPUT RESISTANCE
DOES NOT LOAD CABLE
EVEN WHEN POWER IS OFF
100 1k
10k 100k 1M 10M 100M 1G
FREQUENCY ꢀHzꢁ
R
=
G2
ꢀ5G – 1ꢁ
BNC INPUTS
TRIM CMRR WITH R
G1
1395/6/7 TA02
1395/6/7 TA01
139567fd
1
LT1395/LT1396/LT1397
ABSOLUTE MAXIMUM RATINGS (Note 1)
+
–
Total Supply Voltage ꢀV to V ꢁ .............................12.6V
Input Current ꢀNote 2ꢁ......................................... 10mA
Output Current.................................................. 100mA
Differential Input Voltage ꢀNote 2ꢁ............................. 5V
Output Short-Circuit Duration ꢀNote 3ꢁ ........ Continuous
Operating Temperature Range ꢀNote 4ꢁ
Specified Temperature Range ꢀNote 5ꢁ
LT1395C/LT1396C/LT1397C.................... 0°C to 70°C
LT1397H ........................................... –40°C to 125°C
Storage Temperature Range.................. –65°C to 150°C
Storage Temperature Range
ꢀDD Packageꢁ.................................... –65°C to 125°C
LT1395C/LT1396C/LT1397C................ –40°C to 85°C
LT1397H ........................................... –40°C to 125°C
Junction Temperature ꢀNote 6ꢁ
150°C
Junction Temperature ꢀDD Packageꢁ ꢀNote 6ꢁ..... 125°C
Lead Temperature ꢀSoldering, 10 secꢁ ................. 300°C
PIN CONFIGURATION
TOP VIEW
1
2
3
4
5
6
7
8
OUT D
–IN D
+IN D
16
15
14
13
12
11
10
9
OUT A
–IN A
+IN A
TOP VIEW
–
+
–
+
OUT A
–IN A
+IN A
1
2
3
4
5
6
7
14 OUT D
13 –IN D
TOP VIEW
–
+
V
V
+
12 +IN D
–
OUT A
–IN A
+IN A
1
2
3
4
8
7
6
5
V
+IN C
–IN C
OUT C
NC
+IN B
–IN B
OUT B
NC
+
+
–
+
–
V
11 V
OUT B
–IN B
+IN B
+IN B
–IN B
10 +IN C
9
8
–IN C
–
V
OUT B
OUT C
GN PACKAGE
16-LEAD PLASTIC SSOP
DD PACKAGE
8-LEAD ꢀ3mm × 3mmꢁ PLASTIC DFN
DE14 PACKAGE
14-LEAD ꢀ4mm × 3mmꢁ PLASTIC DFN
T
= 150°C, θ = 160°C/W ꢀNOTE 3ꢁ
T
= 150°C, θ = 43°C/W, θ = 4.3°C/W
T
JMAX
= 150°C, θ = 135°C/W
JMAX
JA
JMAX
JA
JC
JA
–
–
EXPOSED PAD ꢀPIN 15ꢁ IS V
UNDERSIDE METAL CONNECTED TO V
ꢀPCB CONNECTION OPTIONALꢁ
MUST BE SOLDERED TO PCB
TOP VIEW
OUT A
–IN A
+IN A
1
2
3
4
5
6
7
14
13
12
11
10
9
OUT D
–IN D
+IN D
–
+
–
+
TOP VIEW
+
–
V
V
TOP VIEW
+
+IN B
–IN B
+IN C
–IN C
OUT C
OUT 1
–
5 V
+
–
+
–
+
OUT A
–IN A
+IN A
1
2
3
4
8 V
7 OUT B
6
5
–
+
V 2
+
–
–IN B
+IN B
–
+
+IN 3
4 –IN
OUT B
8
–
V
MS8 PACKAGE
8-LEAD PLASTIC MSOP
S5 PACKAGE
5-LEAD PLASTIC TSOT-23
S PACKAGE
14-LEAD PLASTIC SO
T
= 150°C, θ = 250°C/W
T
= 150°C, θ = 100°C/W
T
= 150°C, θ = 250°C/W
JMAX JA
JMAX
JA
JMAX
JA
139567fd
2
LT1395/LT1396/LT1397
PIN CONFIGURATION
TOP VIEW
TOP VIEW
+
V
TOP VIEW
+
NC
–IN
+IN
1
2
3
4
8
7
6
5
NC
OUT A
–IN A
+IN A
1
2
3
4
8
7
6
5
+
V
OUT B
–IN B
+IN B
–
+
–
+
OUT 1
–
6 V
OUT
NC
V
2
5 EN
4 –IN
–
+
+
–
–
–
+IN 3
V
V
S8 PACKAGE ꢀ1395ꢁ
8-LEAD PLASTIC SO
S8 PACKAGE ꢀ1396ꢁ
8-LEAD PLASTIC SO
S6 PACKAGE
6-LEAD PLASTIC TSOT-23
T
= 150°C, θ = 230°C/W
T
= 150°C, θ = 150°C/W
T
= 150°C, θ = 150°C/W
JMAX JA
JMAX
JA
JMAX
JA
ORDER INFORMATION
LEAD FREE FINISH
TAPE AND REEL
PART MARKING*
PACKAGE DESCRIPTION
SPECIFIED TEMPERATURE RANGE
LT1396CDD#PBF
LT1397CDE#PBF
LT1397HDE#PBF
LT1397CGN#PBF
LT1396CMS8#PBF
LT1397CS#PBF
LT1395CS5#PBF
LT1395CS6#PBF
LT1395CS8#PBF
LT1396CS8#PBF
LT1396CDD#TRPBF
LT1397CDE#TRPBF
LT1397HDE#TRPBF
LT1397CGN#TRPBF
LABD
1397
1397
1397
0°C to 70°C
0°C to 70°C
–40°C to 125°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
8-Lead ꢀ3mm × 3mmꢁ Plastic DFN
14-Lead ꢀ4mm × 3mmꢁ Plastic DFN
14-Lead ꢀ4mm × 3mmꢁ Plastic DFN
16-Lead Plastic SSOP
8-Lead Plastic MSOP
14-Lead Plastic SO
5-Lead Plastic TSOT-23
6-Lead Plastic TSOT-23
8-Lead Plastic SO
LT1396CMS8#TRPBF LTDY
LT1397CS#TRPBF
LT1395CS5#TRPBF
LT1395CS6#TRPBF
LT1395CS8#T RPBF 1395
LT1396CS8#TRPBF
1397CS
LTMA
LTMF
1396
8-Lead Plastic SO
LEAD BASED FINISH
LT1396CDD
LT1397CDE
LT1397HDE
LT1397CGN
LT1396CMS8
LT1397CS
LT1395CS5
LT1395CS6
LT1395CS8
LT1396CS8
TAPE AND REEL
LT1396CDD#TR
LT1397CDE#TR
LT1397HDE#TR
LT1397CGN#TR
LT1396CMS8#TR
LT1397CS#TR
LT1395CS5#TR
LT1395CS6#TR
LT1395CS8#TR
LT1396CS8#TR
PART MARKING*
LABD
1397
1397
1397
LTDY
1397CS
LTMA
LTMF
1395
PACKAGE DESCRIPTION
SPECIFIED TEMPERATURE RANGE
0°C to 70°C
0°C to 70°C
–40°C to 125°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
8-Lead ꢀ3mm × 3mmꢁ Plastic DFN
14-Lead ꢀ4mm × 3mmꢁ Plastic DFN
14-Lead ꢀ4mm × 3mmꢁ Plastic DFN
16-Lead Plastic SSOP
8-Lead Plastic MSOP
14-Lead Plastic SO
5-Lead Plastic TSOT-23
6-Lead Plastic TSOT-23
8-Lead Plastic SO
0°C to 70°C
1396
8-Lead Plastic SO
Consult LTC Marketing for parts specified with wider operating temperature ranges. Consult LTC Marketing for information on nonstandard lead based finish parts.
*Temperature grades are identified by a label on the shipping container.
For more information on lead free part marking, go to: http://www.linear.com/leadfree/
For more information on tape and reel specifications, go to: http://www.linear.com/tapeandreel/
139567fd
3
LT1395/LT1396/LT1397
ELECTRICAL CHARACTERISTICS
The ● denotes specifications which apply over the specified operating temperature range, otherwise specifications are at TA = 25°C.
For each amplifier: VCM = 0V, VS = 5V, EN = 0.5V, pulse tested, unless otherwise noted. (Note 5)
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
V
Input Offset Voltage
1
10
12
mV
mV
OS
●
●
Input Offset Voltage Drift
Noninverting Input Current
15
10
μV/°C
ΔV /ΔT
OS
+
I
IN
25
30
μA
μA
●
●
–
I
IN
Inverting Input Current
10
50
60
μA
μA
e
Input Noise Voltage Density
Noninverting Input Noise Current Density
Inverting Input Noise Current Density
Input Resistance
f = 1kHz, R = 1k, R = 10Ω, R = 0Ω
4.5
6
nV/√Hz
pA/√Hz
pA/√Hz
MΩ
n
F
G
S
+i
f = 1kHz
f = 1kHz
n
–i
25
1
n
●
R
V
IN
=
3.5V
0.3
3.5
IN
C
Input Capacitance
2.0
pF
IN
●
●
V
Input Voltage Range, High
V = 5V
4.0
4.0
V
V
INH
S
V = 5V, 0V
S
V
V
Input Voltage Range, Low
Output Voltage Swing, High
V = 5V
–4.0
1.0
–3.5
V
V
INL
S
V = 5V, 0V
S
V = 5V
3.9
3.7
4.2
V
V
V
OUTH
S
V = 5V
●
●
●
S
V = 5V, 0V
4.2
S
V
V
V
Output Voltage Swing, Low
Output Voltage Swing, High
Output Voltage Swing, Low
Common Mode Rejection Ratio
V = 5V
–4.2
–3.9
–3.7
V
V
V
OUTL
OUTH
OUTL
S
V = 5V
S
V = 5V, 0V
0.8
3.6
S
V = 5V, R = 150Ω
3.4
3.2
V
V
V
S
L
V = 5V, R = 150Ω
S
L
V = 5V, 0V; R = 150Ω
3.6
S
L
V = 5V, R = 150Ω
–3.6
–3.4
–3.2
V
V
V
S
L
V = 5V, R = 150Ω
●
●
S
L
V = 5V, 0V; R = 150Ω
0.6
52
10
S
L
CMRR
–I
V
CM
= 3.5V
42
56
dB
Inverting Input Current
Common Mode Rejection
V
V
= 3.5V
= 3.5V
16
22
μA/V
μA/V
CMRR
CM
CM
●
●
PSRR
+I
Power Supply Rejection Ratio
V = 2V to 5V
S
70
1
dB
Noninverting Input Current
Power Supply Rejection
V = 2V to 5V
S
2
3
μA/V
μA/V
PSRR
●
●
–I
Inverting Input Current
Power Supply Rejection
V = 2V to 5V
S
2
7
μA/V
PSRR
A
R
Large-Signal Voltage Gain
V
V
=
2V, R = 150Ω
50
40
80
65
dB
kΩ
mA
mA
μA
V
OUT
OUT
L
–
Transimpedance, ΔV /ΔI
= 2V, R = 150Ω
100
OL
OUT
S
OUT IN
L
●
●
●
I
I
Maximum Output Current
Supply Current per Amplifier
Disable Supply Current
R = 0Ω
L
V
= 0V
4.6
0.1
6.5
OUT
EN Pin Voltage = 4.5V, R = 150Ω
ꢀLT1395CS6 onlyꢁ
100
L
I
Enable Pin Current
Slew Rate ꢀNote 7ꢁ
ꢀLT1395CS6 onlyꢁ
30
110
200
μA
μA
EN
●
SR
A = –1, R = 150Ω
500
800
V/μs
V
L
139567fd
4
LT1395/LT1396/LT1397
ELECTRICAL CHARACTERISTICS
The ● denotes specifications which apply over the specified operating temperature range, otherwise specifications are at TA = 25°C.
For each amplifier: VCM = 0V, VS = 5V, pulse tested, unless otherwise noted. (Note 5)
SYMBOL
PARAMETER
CONDITIONS
R = R = 255Ω, R = 100Ω, ꢀLT1395CS6 onlyꢁ
MIN
TYP
30
MAX
75
UNITS
ns
t
t
Turn-On Delay Time ꢀNote 9ꢁ
Turn-Off Delay Time ꢀNote 9ꢁ
–3dB Bandwidth
ON
F
G
L
R = R = 255Ω, R = 100Ω, ꢀLT1395CS6 onlyꢁ
40
100
ns
OFF
F
G
L
–3dB BW
A = 1, R = 374Ω, R = 100Ω
400
350
MHz
MHz
V
F
L
A = 2, R = R = 255Ω, R = 100Ω
V
F
G
L
0.1dB BW 0.1dB Bandwidth
A = 1, R = 374Ω, R = 100Ω
100
100
MHz
MHz
V
F
L
A = 2, R = R = 255Ω, R = 100Ω
V
F
G
L
t , t
Small-Signal Rise and Fall Time
Propagation Delay
R = R = 255Ω, R = 100Ω, V
= 1V
= 1V
= 1V
1.3
2.5
ns
ns
r
f
F
G
L
OUT
OUT
OUT
P-P
P-P
P-P
t
R = R = 255Ω, R = 100Ω, V
F G L
PD
os
Small-Signal Overshoot
Settling Time
R = R = 255Ω, R = 100Ω, V
10
%
F
G
L
t
S
0.1%, A = –1, R = R = 280Ω, R = 150Ω
25
ns
V
F
G
L
dG
dP
Differential Gain ꢀNote 8ꢁ
Differential Phase ꢀNote 8ꢁ
R = R = 255Ω, R = 150Ω
0.02
0.04
%
F
G
L
R = R = 255Ω, R = 150Ω
DEG
F
G
L
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: This parameter is guaranteed to meet specified performance
through design and characterization. It has not been tested.
Note 6: T is calculated from the ambient temperature T and the power
J A
dissipation P according to the following formula:
D
LT1395CS5: T = T + ꢀP • 250°C/Wꢁ
J
A
D
LT1396CS6: T = T + ꢀP • 230°C/Wꢁ
J
A
D
LT1395CS8: T = T + ꢀP • 150°C/Wꢁ
J
A
D
LT1396CS8: T = T + ꢀP • 150°C/Wꢁ
J
A
D
Note 3: A heat sink may be required depending on the power supply
voltage and how many amplifiers have their outputs short circuited.
LT1396CMS8: T = T + ꢀP • 250°C/Wꢁ
J
A
D
LT1396CDD: T = T + ꢀP • 160°C/Wꢁ
J
A
D
The θ specified for the DD package is with minimal PCB heat spreading
JA
LT1397CS14: T = T + ꢀP • 100°C/Wꢁ
metal. Using expanded metal area on all layers of a board reduces
J
A
D
this value.
LT1397CGN16: T = T + ꢀP • 135°C/Wꢁ
J
A
D
Note 4: The LT1395C/LT1396C/LT1397C are guaranteed functional over the
operating temperature range of –40°C to 85°C. The LT1397H is guaranteed
functional over the operating temperature range of –40°C to 125°C.
LT1397CDE: T = T + ꢀP • 43°C/Wꢁ
J
A
D
LT1397HDE: T = T + ꢀP • 43°C/Wꢁ
J
A
D
Note 7: Slew rate is measured at 2V on a 3V output signal.
Note 5: The LT1395C/LT1396C/LT1397C are guaranteed to meet specified
performance from 0°C to 70°C. The LT1395C/LT1396C/LT1397C are
designed, characterized and expected to meet specified performance from
–40°C and 85°C but are not tested or QA sampled at these temperatures.
The LT1397H is guaranteed to meet specified performance from –40°C to
125°C. For guaranteed I-grade parts, consult the factory.
Note 8: Differential gain and phase are measured using a Tektronix
TSG120YC/NTSC signal generator and a Tektronix 1780R Video
Measurement Set. The resolution of this equipment is 0.1% and 0.1°.
Ten identical amplifier stages were cascaded giving an effective resolution
of 0.01% and 0.01°.
Note 9: For LT1395CS6, turn-on delay time ꢀt ꢁ is measured from control
ON
input to appearance of 1Vꢀ50%ꢁ at the output, for V = 1V and A = 2.
IN
V
Likewise, turn-off delay time ꢀt ꢁ is measured from control input to
OFF
appearance of 1Vꢀ50%ꢁ on the output for V = 1V and A = 2.
IN
V
This specification is guaranteed by design and characterization.
139567fd
5
LT1395/LT1396/LT1397
TYPICAL AC PERFORMANCE
SMALL SIGNAL
–3dB BW (MHz)
SMALL SIGNAL
0.1dB BW (MHz)
SMALL SIGNAL
PEAKING (dB)
V (V)
S
A
R (Ω)
L
R (Ω)
F
R (Ω)
G
V
5
5
5
5
5
5
5
1
100
100
100
500
500
500
500
374
255
280
221
100
90.9
90.9
–
255
400
350
350
300
210
65
100
100
100
100
50
0.1
0.1
0.1
0.1
0.0
0.0
0.1
2
–1
3
280
110
5
24.9
10
10
10
10
10Ω||100pF
100
50
TYPICAL PERFORMANCE CHARACTERISTICS
Closed-Loop Gain vs Frequency
(AV = 1)
Closed-Loop Gain vs Frequency
(AV = 2)
Closed-Loop Gain vs Frequency
(AV = –1)
0
–2
–4
–6
6
4
2
0
0
–2
–4
–6
1M
V
S
10M
FREQUENCY ꢀHzꢁ
100M
1G
1395/6/7 G01
1M
V
S
10M
FREQUENCY ꢀHzꢁ
100M
1G
1395/6/7 G02
1M
V
S
10M
FREQUENCY ꢀHzꢁ
100M
1G
1395/6/7 G03
=
5V
=
5V
= 5V
V
R
R
= –10dBm
V
R
R
= –10dBm
V
R
R
= –10dBm
IN
F
L
IN
F
L
IN
F
L
= 374Ω
= 100Ω
= R = 255Ω
G
= R = 280Ω
G
= 100Ω
= 100Ω
Large-Signal Transient Response
(AV = 1)
Large-Signal Transient Response
(AV = 2)
Large-Signal Transient Response
(AV = –1)
1395/6/7 G04
1395/6/7 G05
1395/6/7 G06
V
V
R
R
=
5V
2.5V
TIME ꢀ10ns/DIVꢁ
V
V
R
R
=
5V
1.25V
TIME ꢀ10ns/DIVꢁ
V
V
R
R
=
S
5V
2.5V
TIME ꢀ10ns/DIVꢁ
S
S
=
=
=
IN
IN
IN
= 374Ω
= 100Ω
= R = 255Ω
G
= R = 280Ω
G
= 100Ω
F
L
F
L
F
= 100Ω
L
139567fd
6
LT1395/LT1396/LT1397
TYPICAL PERFORMANCE CHARACTERISTICS
2nd and 3rd Harmonic Distortion
Maximum Undistorted Output
vs Frequency
Voltage vs Frequency
PSRR vs Frequency
30
40
8
7
6
5
4
3
2
80
T
= 25°C
A
F
L
S
R
R
V
= R = 255W
G
70
= 100Ω
=
OUT
5V
= 2VPP
A
= +1
A
= +2
V
60
V
50
V
+PSRR
–PSRR
60
50
40
30
20
70
HD3
HD2
80
T
= 25°C
A
F
F
L
S
90
R
R
R
= 374Ω ꢀA = 1ꢁ
T
= 25°C
G
= 100Ω
= +2
V
A
= R = 255Ω ꢀA = 2ꢁ
R
R
= R = 255Ω
G
V
F
L
V
10
0
100
110
= 100Ω
V
=
5V
A
1k
10k
100k
1M
10M
100M
1M
10M
FREQUENCY ꢀHzꢁ
100M
10k
100k
1M
FREQUENCY ꢀHzꢁ
10M
100M
FREQUENCY ꢀHzꢁ
1395/6/7 G09
1395/6/7 G07
1395/6/7 G08
Input Voltage Noise and Current
Noise vs Frequency
LT1395CS6 Output Impedance
(Disabled) vs Frequency
Output Impedance vs Frequency
100
10
1000
100
100k
10k
1k
R
R
A
V
= R = 255Ω
G
R
A
V
= 374Ω
= +1
= 5V
F
L
V
S
F
V
S
= 50Ω
= +2
=
5V
1
–I
n
+I
n
10
1
0.1
0.01
e
n
100
10 30 100 300 1k 3k 10k 30k 100k
FREQUENCY ꢀHzꢁ
10k
100k
1M
10M
100M
100k
1M
10M
100M
FREQUENCY ꢀHzꢁ
FREQUENCY ꢀHzꢁ
1395/6/7 G11
1395/6/7 G12
1395/6/7 G10
Maximum Capacitive Load
vs Feedback Resistor
Capacitive Load
vs Output Series Resistor
Supply Current vs Supply Voltage
6
5
1000
100
10
40
30
20
10
0
R
S
= R = 255Ω
F
G
V
=
5V
OVERSHOOT < 2%
–
EN = V
4
EN = 0V,
ALL NON-DISABLE DEVICES
3
2
R
A
V
= R
G
F
V
S
1
0
= +2
5V
=
PEAKING ≤ 5dB
2100 2700 3300
FEEDBACK RESISTANCE ꢀΩꢁ
1
300
900
1500
10
100
CAPACITIVE LOAD ꢀpFꢁ
1000
0
1
2
3
4
5
6
7
8
9
SUPPLY VOLTAGE ꢀ Vꢁ
1395/6/7 G13
1395/6/7 G14
1395/6/7 G15
139567fd
7
LT1395/LT1396/LT1397
TYPICAL PERFORMANCE CHARACTERISTICS
Output Voltage Swing
vs Temperature
LT1395CS6 Enable Pin Current
vs Temperature
Positive Supply Current per
Amplifier vs Temperature
5
4
–10
–20
5.00
V
= 5V
V
S
= 5V
S
EN = –5V
4.75
4.50
R
= 100k
R
= 150Ω
L
3
L
EN = 0V
EN = 0V,
ALL NON-DISABLE DEVICES
–30
–40
–50
–60
–70
2
4.25
4.00
3.75
3.50
3.25
1
V
=
5V
0
EN = –5V
S
–1
–2
–3
–4
–5
R
= 100k
R
= 150Ω
L
L
–80
3.00
50
100 125
–25
0
50
75 100 125
–50
0
25
50
75 100 125
–50 –25
0
25
75
–50
25
–25
AMBIENT TEMPERATURE ꢀ°Cꢁ
AMBIENT TEMPERATURE ꢀ°Cꢁ
AMBIENT TEMPERATURE ꢀ°Cꢁ
1395/6/7 G17
1395/6/7 G16
Input Offset Voltage
vs Temperature
Input Bias Currents
vs Temperature
3.0
2.5
2.0
1.5
1.0
0.5
0
15
12
9
V
= 5V
V
= 5V
S
S
+
I
B
–
I
B
6
3
–0.5
–1.0
0
–25
0
50
75 100 125
50
100 125
–50
25
–50 –25
0
25
75
AMBIENT TEMPERATURE ꢀ°Cꢁ
AMBIENT TEMPERATURE ꢀ°Cꢁ
1395/6/7 G19
1395/6/7 G20
Square Wave Response
Propagation Delay
Rise Time and Overshoot
OS = 10%
1395/6/7 G21
R
R
= 100Ω
TIME ꢀ10ns/DIVꢁ
L
F
= R = 255Ω
G
1395/6/7 G23
1395/6/7 G22
f = 10MHz
t
= 2.5ns
t = 1.3ns
r
PD
A
R
R
= +2
TIME ꢀ500ps/DIVꢁ
A
R
R
= +2
TIME ꢀ500ps/DIVꢁ
V
L
F
V
L
F
= 100Ω
= 100Ω
= R = 255Ω
G
= R = 255Ω
G
139567fd
8
LT1395/LT1396/LT1397
PIN FUNCTIONS
LT1395CS5
LT1397CS, LT1397CDE, LT1397HDE
OUT (Pin 1): Output.
OUT A (Pin 1): A Channel Output.
–
V (Pin 2): Negative Supply Voltage, Usually –5V.
–IN A (Pin 2): Inverting Input of A Channel Amplifier.
+IN (Pin 3): Noninverting Input.
–IN (Pin 4): Inverting Input.
+IN A (Pin 3): Noninverting Input of A Channel Amplifier.
+
V (Pin 4): Positive Supply Voltage, Usually 5V.
+
V (Pin 5): Positive Supply Voltage, Usually 5V.
+IN B (Pin 5): Noninverting Input of B Channel Amplifier.
–IN B (Pin 6): Inverting Input of B Channel Amplifier.
OUT B (Pin 7): B Channel Output.
LT1395CS6
OUT (Pin 1): Output.
OUT C (Pin 8): C Channel Output.
–
V (Pin 2): Negative Supply Voltage, Usually –5V.
–IN C (Pin 9): Inverting Input of C Channel Amplifier.
+IN (Pin 3): Noninverting Input.
–IN (Pin 4): Inverting Input.
+IN C (Pin 10): Noninverting Input of C Channel Amplifier.
–
V (Pin 11): Negative Supply Voltage, Usually –5V.
EN (Pin 5): Enable Pin. Logic low to enable.
+IN D (Pin 12): Noninverting Input of D Channel Amplifier.
–IN D (Pin 13): Inverting Input of D Channel Amplifier.
OUT D (Pin 14): D Channel Output.
+
V (Pin 6): Positive Supply Voltage, Usually 5V.
LT1395CS8
NC (Pin 1): No Connection.
–IN (Pin 2): Inverting Input.
+IN (Pin 3): Noninverting Input.
LT1397CGN
OUT A (Pin 1): A Channel Output.
–IN A (Pin 2): Inverting Input of A Channel Amplifier.
–
V (Pin 4): Negative Supply Voltage, Usually –5V.
+IN A (Pin 3): Noninverting Input of A Channel Amplifier.
NC (Pin 5): No Connection.
+
V (Pin 4): Positive Supply Voltage, Usually 5V.
OUT (Pin 6): Output.
+IN B (Pin 5): Noninverting Input of B Channel Amplifier.
–IN B (Pin 6): Inverting Input of B Channel Amplifier.
OUT B (Pin 7): B Channel Output.
V+ (Pin 7): Positive Supply Voltage, Usually 5V.
NC (Pin 8): No Connection.
NC (Pin 8): No Connection.
LT1396CMS8, LT1396CS8, LT1396CDD
NC (Pin 9): No Connection.
OUT A (Pin 1): A Channel Output.
OUT C (Pin 10): C Channel Output.
–IN A (Pin 2): Inverting Input of A Channel Amplifier.
–IN C (Pin 11): Inverting Input of C Channel Amplifier.
+IN A (Pin 3): Noninverting Input of A Channel Amplifier.
+IN C (Pin 12): Noninverting Input of C Channel Amplifier.
–
V (Pin 4): Negative Supply Voltage, Usually –5V.
–
V (Pin 13): Negative Supply Voltage, Usually –5V.
+IN B (Pin 5): Noninverting Input of B Channel Amplifier.
–IN B (Pin 6): Inverting Input of B Channel Amplifier.
OUT B (Pin 7): B Channel Output.
+IN D (Pin 14): Noninverting Input of D Channel Amplifier.
–IN D (Pin 15): Inverting Input of D Channel Amplifier.
OUT D (Pin 16): D Channel Output.
+
V (Pin 8): Positive Supply Voltage, Usually 5V.
139567fd
9
LT1395/LT1396/LT1397
APPLICATIONS INFORMATION
Feedback Resistor Selection
Slew Rate
Thesmall-signalbandwidthoftheLT1395/LT1396/LT1397
is set by the external feedback resistors and the inter-
nal junction capacitors. As a result, the bandwidth is a
function of the supply voltage, the value of the feedback
resistor, the closed-loop gain and the load resistor. The
LT1395/LT1396/LT1397 have been optimized for 5V
supply operation and have a –3dB bandwidth of 400MHz
at a gain of 1 and 350MHz at a gain of 2. Please refer to
the resistor selection guide in the Typical AC Perfor-
mance table.
Unlike a traditional voltage feedback op amp, the slew rate
of a current feedback amplifier is not independent of the
amplifier gain configuration. In a current feedback ampli-
fier, both the input stage and the output stage have slew
rate limitations. In the inverting mode, and for gains of 2
or more in the noninverting mode, the signal amplitude
between the input pins is small and the overall slew rate
is that of the output stage. For gains less than 2 in the
noninverting mode, the overall slew rate is limited by the
input stage.
The input slew rate of the LT1395/LT1396/LT1397 is ap-
proximately 600V/μs and is set by internal currents and
capacitances. The output slew rate is set by the value of
the feedback resistor and internal capacitance. At a gain
of 2 with 255Ω feedback and gain resistors and 5V
supplies, theoutputslewrateistypically800V/μs. Larger
feedback resistors will reduce the slew rate as will lower
supply voltages.
Capacitance on the Inverting Input
Currentfeedbackamplifiersrequireresistivefeedbackfrom
the output to the inverting input for stable operation. Take
care to minimize the stray capacitance between the output
and the inverting input. Capacitance on the inverting input
to ground will cause peaking in the frequency response
ꢀand overshoot in the transient responseꢁ.
Capacitive Loads
Enable/Disable
The LT1395/LT1396/LT1397 can drive many capacitive
loads directly when the proper value of feedback resistor
is used. The required value for the feedback resistor will
increase as load capacitance increases and as closed-
loop gain decreases. Alternatively, a small resistor ꢀ5Ω
to 35Ωꢁ can be put in series with the output to isolate the
capacitive load from the amplifier output. This has the
advantage that the amplifier bandwidth is only reduced
when the capacitive load is present. The disadvantage is
that the gain is a function of the load resistance. See the
Typical Performance Characteristics curves.
The LT1395CS6 has a unique high impedance, zero sup-
ply current mode which is controlled by the EN pin. The
LT1395CS6 is designed to operate with CMOS logic; it
draws virtually zero current when the EN pin is high. To
activate the amplifier, its EN pin is normally pulled to a
logic low. However, supply current will vary as the volt-
age between the V+ supply and EN is varied. As seen
in Figure 1, +IS does vary with ꢀV+ – VENꢁ, particularly
when the voltage difference is less than 3V. For normal
5.0
T
= 25°C
= 5V
A
+
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
V
–
V
= 0V
Power Supplies
TheLT1395/LT1396/LT1397willoperatefromsingleorsplit
supplies from 2V ꢀ4V totalꢁ to 6V ꢀ12V totalꢁ. It is not
necessary to use equal value split supplies, however the
offsetvoltageandinvertinginputbiascurrentwillchange.
Theoffsetvoltagechangesabout2.5mVpervoltofsupply
mismatch.Theinvertingbiascurrentwilltypicallychange
about 10μA per volt of supply mismatch.
–
V
= –5V
0
2
3
+
4
5
6
7
1
V
– V ꢀVꢁ
EN
1395/6/7 F01
Figure 1. +IS vs (V+ – VEN
)
139567fd
10
LT1395/LT1396/LT1397
APPLICATIONS INFORMATION
Differential Input Signal Swing
OUTPUT
To avoid any breakdown condition on the input transis-
tors, the differential input swing must be limited to 5V.
In normal operation, the differential voltage between the
input pins is small, so the 5V limit is not an issue.
Buffered RGB to Color-Difference Matrix
EN
AnLT1397canbeusedtocreatebufferedcolor-difference
signals from RGB inputs ꢀFigure 4ꢁ. In this application,
the R input arrives via 75Ω coax. It is routed to the non-
inverting input of LT1397 amplifier A1 and to a 845Ω
resistor R8. There is also an 82.5Ω termination resistor
R11, which yields a 75Ω input impedance at the R input
when considered in parallel with R8. R8 connects to
the inverting input of a second LT1397 amplifier ꢀA2ꢁ,
which also sums the weighted G and B inputs to create a
–0.5 • Y output. LT1397 amplifier A3 then takes the
–0.5 • Y output and amplifies it by a gain of –2, resulting
in the Y output. Amplifier A1 is configured in a noninvert-
ing gain of 2 with the bottom of the gain resistor R2 tied
to the Y output. The output of amplifier A1 thus results
in the color-difference output R-Y.
1395/6/7 F02
V
V
=
IN
5V
R
R
= 255Ω
= 255Ω
R = 100Ω
L
S
F
G
= 1V
Figure 2. Amplifier Enable Time, AV = 2
OUTPUT
EN
1395/6/7 F03
V
V
=
IN
5V
R
R
= 255Ω
= 255Ω
R = 100Ω
L
The B input is similar to the R input. It arrives via 75Ω
coax, and is routed to the noninverting input of LT1397
amplifier A4, and to a 2320Ω resistor R10. There is also
a 76.8Ω termination resistor R13, which yields a 75Ω
S
F
G
= 1V
Figure 3. Amplifier Disable Time, AV = 2
operation, it is important to keep the EN pin at least 3V
below the V+ supply. If a V+ of less than 3V is desired,
and the amplifier will remain enabled at all times, then
the EN pin should be tied to the V– supply. The enable pin
current is approximately 30μA when activated. If using
CMOS open-drain logic, an external 1k pull-up resistor
is recommended to ensure that the LT1395CS6 remains
disabled in spite of any CMOS drain leakage currents.
+
75Ω
R8
A1
SOURCES
R-Y
845Ω
1/4 LT1397
R
–
R1
R11
255Ω
82.5Ω
R9
432Ω
R7
G
B
255Ω
R12
90.9Ω
R10
2320Ω
–
R6
127Ω
R5
R2
255Ω
255Ω
R13
76.8Ω
A2
1/4 LT1397
+
–
A3
The enable/disable times are very fast when driven from
standard5VCMOSlogic.TheLT1395CS6enablesinabout
30ns ꢀ50% point to 50% pointꢁ while operating on 5V
supplies ꢀFigure 2ꢁ. Likewise, the disable time is approxi-
mately 40ns ꢀ50% point to 50% pointꢁ ꢀFigure 3ꢁ.
Y
1/4 LT1397
+
R4
255Ω
R3
255Ω
–
ALL RESISTORS 1%
5V
A4
B-Y
V
=
S
1/4 LT1397
1395/6/7 F04
+
Figure 4. Buffered RGB to Color-Difference Matrix
139567fd
11
LT1395/LT1396/LT1397
APPLICATIONS INFORMATION
input impedance when considered in parallel with R10.
R10 also connects to the inverting input of amplifier A2,
adding the B contribution to the Y signal as discussed
above. Amplifier A4 is configured in a noninverting gain
of 2 configuration with the bottom of the gain resistor
R4 tied to the Y output. The output of amplifier A4 thus
results in the color-difference output B-Y.
R8 and R9 are grounded. This results in a gain of 2.41
and a contribution at the output of A2 of 2Y. The R-Y input
is amplified by A2 with the gain set by resistors R8 and
R10, giving an amplification of –1.02. This results in a
contribution at the output of A2 of 1.02Y – 1.02R. The B-Y
input is amplified by A2 with the gain set by resistors R9
and R10, giving an amplification of –0.37. This results in
a contribution at the output of A2 of 0.37Y – 0.37B.
The G input also arrives via 75Ω coax and adds its con-
tribution to the Y signal via a 432Ω resistor R9, which is
tied to the inverting input of amplifier A2. There is also
a 90.9Ω termination resistor R12, which yields a 75Ω
termination when considered in parallel with R9. Using
superposition, it is straightforward to determine the
output of amplifier A2. Although inverted, it sums the
R, G and B signals in the standard proportions of 0.3R,
0.59G and 0.11B that are used to create the Y signal.
Amplifier A3 then inverts and amplifies the signal by 2,
resulting in the Y output.
If we now sum the three contributions at the output of
A2, we get:
A2
= 3.40Y – 1.02R – 0.37B
OUT
It is important to remember though that Y is a weighted
sum of R, G and B such that:
Y = 0.3R + 0.59G + 0.11B
If we substitute for Y at the output of A2 we then get:
A2
= ꢀ1.02R – 1.02Rꢁ + 2G + ꢀ0.37B – 0.37Bꢁ
= 2G
OUT
Buffered Color-Difference to RGB Matrix
Theback-terminationresistorR11thenhalvestheoutput
of A2 resulting in the G output.
An LT1395 combined with an LT1396 can be used to cre-
ate buffered RGB outputs from color-difference signals
ꢀFigure 5ꢁ. The R output is a back-terminated 75Ω signal
created using resistor R5 and amplifier A1 configured for
a gain of +4 via resistors R3 and R4. The noninverting
input of amplifier A1 is connected via 1k resistors R1
and R2 to the Y and R-Y inputs respectively, resulting
in cancellation of the Y signal at the amplifier input. The
remaining R signal is then amplified by A1.
R1
1k
Y
R2
1k
R5
75Ω
+
A1
R-Y
R
1/2 LT1396
–
R3
267Ω
R4
88.7Ω
R6
205Ω
R11
75Ω
+
The B output is also a back-terminated 75Ω signal cre-
ated using resistor R16 and amplifier A3 configured for
a gain of +4 via resistors R14 and R15. The noninverting
input of amplifier A3 is connected via 1k resistors R12
and R13 to the Y and B-Y inputs respectively, resulting
in cancellation of the Y signal at the amplifier input. The
remaining B signal is then amplified by A3.
R7
1k
A2
LT1395
G
–
R10
267Ω
R8
261Ω
R9
698Ω
B-Y
R12
1k
R16
75Ω
+
A3
R13
1k
B
1/2 LT1396
–
R14
The G output is the most complicated of the three. It is a
weighted sum of the Y, R-Y and B-Y inputs. The Y input
is attenuated via resistors R6 and R7 such that amplifier
A2’s noninverting input sees 0.83Y. Using superposition,
we can calculate the positive gain of A2 by assuming that
267Ω
ALL RESISTORS 1%
5V
V
=
S
R15
88.7Ω
1395/6/7 F05
Figure 5. Buffered Color-Difference to RGB Matrix
139567fd
12
LT1395/LT1396/LT1397
(each amplifier)
SIMPLIFIED SCHEMATIC
+
V
–IN
OUT
+IN
EN
ꢀLT1395CS6 ONLYꢁ
FOR ALL
NON-DISABLE
DEVICES
–
V
1395/6/7 SS
PACKAGE DESCRIPTION
DD Package
8-Lead Plastic DFN (3mm × 3mm)
ꢀReference LTC DWG # 05-08-1698 Rev Cꢁ
R = 0.125
0.40 p 0.10
TYP
5
8
0.70 p0.05
3.5 p0.05
2.10 p0.05 ꢀ2 SIDESꢁ
1.65 p0.05
3.00 p0.10
ꢀ4 SIDESꢁ
1.65 p 0.10
ꢀ2 SIDESꢁ
PIN 1
TOP MARK
ꢀNOTE 6ꢁ
PACKAGE
OUTLINE
ꢀDD8ꢁ DFN 0509 REV C
4
1
0.25 p 0.05
0.75 p0.05
0.200 REF
0.25 p 0.05
0.50 BSC
0.50
BSC
2.38 p0.10
2.38 p0.05
BOTTOM VIEW—EXPOSED PAD
0.00 – 0.05
RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS
APPLY SOLDER MASK TO AREAS THAT ARE NOT SOLDERED
NOTE:
1. DRAWING TO BE MADE A JEDEC PACKAGE OUTLINE M0-229 VARIATION OF ꢀWEED-1ꢁ
2. DRAWING NOT TO SCALE
3. ALL DIMENSIONS ARE IN MILLIMETERS
4. DIMENSIONS OF EXPOSED PAD ON BOTTOM OF PACKAGE DO NOT INCLUDE
MOLD FLASH. MOLD FLASH, IF PRESENT, SHALL NOT EXCEED 0.15mm ON ANY SIDE
5. EXPOSED PAD SHALL BE SOLDER PLATED
6. SHADED AREA IS ONLY A REFERENCE FOR PIN 1 LOCATION
ON TOP AND BOTTOM OF PACKAGE
139567fd
13
LT1395/LT1396/LT1397
PACKAGE DESCRIPTION
DE Package
14-Lead Plastic DFN (4mm × 3mm)
ꢀReference LTC DWG # 05-08-1708 Rev Bꢁ
R = 0.115
TYP
0.40 p 0.10
4.00 p0.10
ꢀ2 SIDESꢁ
8
14
R = 0.05
TYP
0.70 p0.05
3.30 p0.05
1.70 p 0.05
3.30 p0.10
3.60 p0.05
2.20 p0.05
3.00 p0.10
ꢀ2 SIDESꢁ
1.70 p 0.10
PIN 1 NOTCH
R = 0.20 OR
PIN 1
TOP MARK
ꢀSEE NOTE 6ꢁ
0.35 s 45o
PACKAGE
OUTLINE
CHAMFER
ꢀDE14ꢁ DFN 0806 REV B
7
1
0.25 p 0.05
0.75 p0.05
0.200 REF
0.25 p 0.05
0.50 BSC
0.50 BSC
3.00 REF
3.00 REF
0.00 – 0.05
BOTTOM VIEW—EXPOSED PAD
RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS
APPLY SOLDER MASK TO AREAS THAT ARE NOT SOLDERED
NOTE:
1. DRAWING PROPOSED TO BE MADE VARIATION OF VERSION ꢀWGED-3ꢁ IN JEDEC
PACKAGE OUTLINE MO-229
2. DRAWING NOT TO SCALE
3. ALL DIMENSIONS ARE IN MILLIMETERS
4. DIMENSIONS OF EXPOSED PAD ON BOTTOM OF PACKAGE DO NOT INCLUDE
MOLD FLASH. MOLD FLASH, IF PRESENT, SHALL NOT EXCEED 0.15mm ON ANY SIDE
5. EXPOSED PAD SHALL BE SOLDER PLATED
6. SHADED AREA IS ONLY A REFERENCE FOR PIN 1 LOCATION ON THE
TOP AND BOTTOM OF PACKAGE
GN Package
16-Lead Plastic SSOP (Narrow .150 Inch)
ꢀReference LTC DWG # 05-08-1641ꢁ
.189 – .196*
ꢀ4.801 – 4.978ꢁ
.045 .005
.009
ꢀ0.229ꢁ
REF
16 15 14 13 12 11 10 9
.254 MIN
.150 – .165
.229 – .244
.150 – .157**
ꢀ5.817 – 6.198ꢁ
ꢀ3.810 – 3.988ꢁ
.0165 .0015
.0250 BSC
RECOMMENDED SOLDER PAD LAYOUT
1
2
3
4
5
6
7
8
.015 .004
ꢀ0.38 0.10ꢁ
× 45°
.0532 – .0688
ꢀ1.35 – 1.75ꢁ
.004 – .0098
ꢀ0.102 – 0.249ꢁ
.007 – .0098
ꢀ0.178 – 0.249ꢁ
0° – 8° TYP
.016 – .050
ꢀ0.406 – 1.270ꢁ
.0250
ꢀ0.635ꢁ
BSC
.008 – .012
GN16 ꢀSSOPꢁ 0204
ꢀ0.203 – 0.305ꢁ
TYP
NOTE:
1. CONTROLLING DIMENSION: INCHES
*DIMENSION DOES NOT INCLUDE MOLD FLASH. MOLD FLASH
SHALL NOT EXCEED 0.006" ꢀ0.152mmꢁ PER SIDE
**DIMENSION DOES NOT INCLUDE INTERLEAD FLASH. INTERLEAD
FLASH SHALL NOT EXCEED 0.010" ꢀ0.254mmꢁ PER SIDE
INCHES
2. DIMENSIONS ARE IN
ꢀMILLIMETERSꢁ
3. DRAWING NOT TO SCALE
139567fd
14
LT1395/LT1396/LT1397
PACKAGE DESCRIPTION
MS8 Package
8-Lead Plastic MSOP
ꢀReference LTC DWG # 05-08-1660 Rev Fꢁ
0.889 p 0.127
(.035 p .005)
5.23
(.206)
MIN
3.20 – 3.45
(.126 – .136)
3.00 p 0.102
(.118 p .004)
(NOTE 3)
0.52
(.0205)
REF
0.65
(.0256)
BSC
0.42 p 0.038
(.0165 p .0015)
TYP
8
7 6 5
RECOMMENDED SOLDER PAD LAYOUT
3.00 p 0.102
(.118 p .004)
(NOTE 4)
4.90 p 0.152
(.193 p .006)
DETAIL “A”
0.254
(.010)
0o – 6o TYP
GAUGE PLANE
1
2
3
4
0.53 p 0.152
(.021 p .006)
1.10
(.043)
MAX
0.86
(.034)
REF
DETAIL “A”
0.18
(.007)
SEATING
PLANE
0.22 – 0.38
0.1016 p 0.0508
(.009 – .015)
(.004 p .002)
0.65
(.0256)
BSC
TYP
MSOP (MS8) 0307 REV F
NOTE:
1. DIMENSIONS IN MILLIMETER/(INCH)
2. DRAWING NOT TO SCALE
3. DIMENSION DOES NOT INCLUDE MOLD FLASH, PROTRUSIONS OR GATE BURRS.
MOLD FLASH, PROTRUSIONS OR GATE BURRS SHALL NOT EXCEED 0.152mm (.006") PER SIDE
4. DIMENSION DOES NOT INCLUDE INTERLEAD FLASH OR PROTRUSIONS.
INTERLEAD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.152mm (.006") PER SIDE
5. LEAD COPLANARITY (BOTTOM OF LEADS AFTER FORMING) SHALL BE 0.102mm (.004") MAX
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15
LT1395/LT1396/LT1397
PACKAGE DESCRIPTION
S5 Package
5-Lead Plastic TSOT-23
ꢀReference LTC DWG # 05-08-1633ꢁ
0.62
MAX
0.95
REF
2.90 BSC
ꢀNOTE 4ꢁ
1.22 REF
1.50 – 1.75
ꢀNOTE 4ꢁ
2.80 BSC
1.4 MIN
3.85 MAX 2.62 REF
PIN ONE
RECOMMENDED SOLDER PAD LAYOUT
PER IPC CALCULATOR
0.30 – 0.45 TYP
5 PLCS ꢀNOTE 3ꢁ
0.95 BSC
0.80 – 0.90
0.20 BSC
DATUM ‘A’
0.01 – 0.10
1.00 MAX
0.30 – 0.50 REF
1.90 BSC
0.09 – 0.20
ꢀNOTE 3ꢁ
NOTE:
S5 TSOT-23 0302 REV B
1. DIMENSIONS ARE IN MILLIMETERS
2. DRAWING NOT TO SCALE
3. DIMENSIONS ARE INCLUSIVE OF PLATING
4. DIMENSIONS ARE EXCLUSIVE OF MOLD FLASH AND METAL BURR
5. MOLD FLASH SHALL NOT EXCEED 0.254mm
6. JEDEC PACKAGE REFERENCE IS MO-193
139567fd
16
LT1395/LT1396/LT1397
PACKAGE DESCRIPTION
S6 Package
6-Lead Plastic TSOT-23
ꢀReference LTC DWG # 05-08-1634ꢁ
2.90 BSC
ꢀNOTE 4ꢁ
0.62
MAX
0.95
REF
1.22 REF
1.4 MIN
1.50 – 1.75
2.80 BSC
3.85 MAX 2.62 REF
ꢀNOTE 4ꢁ
PIN ONE ID
RECOMMENDED SOLDER PAD LAYOUT
PER IPC CALCULATOR
0.30 – 0.45
6 PLCS ꢀNOTE 3ꢁ
0.95 BSC
0.80 – 0.90
0.20 BSC
DATUM ‘A’
0.01 – 0.10
1.00 MAX
0.30 – 0.50 REF
1.90 BSC
0.09 – 0.20
ꢀNOTE 3ꢁ
S6 TSOT-23 0302 REV B
NOTE:
1. DIMENSIONS ARE IN MILLIMETERS
2. DRAWING NOT TO SCALE
3. DIMENSIONS ARE INCLUSIVE OF PLATING
4. DIMENSIONS ARE EXCLUSIVE OF MOLD FLASH AND METAL BURR
5. MOLD FLASH SHALL NOT EXCEED 0.254mm
6. JEDEC PACKAGE REFERENCE IS MO-193
139567fd
17
LT1395/LT1396/LT1397
PACKAGE DESCRIPTION
S8 Package
8-Lead Plastic Small Outline (Narrow .150 Inch)
ꢀReference LTC DWG # 05-08-1610ꢁ
.189 – .197
ꢀ4.801 – 5.004ꢁ
.045 .005
NOTE 3
.050 BSC
7
5
8
6
.245
MIN
.160 .005
.150 – .157
ꢀ3.810 – 3.988ꢁ
NOTE 3
.228 – .244
ꢀ5.791 – 6.197ꢁ
.030 .005
TYP
1
3
4
2
RECOMMENDED SOLDER PAD LAYOUT
.010 – .020
× 45°
.053 – .069
ꢀ1.346 – 1.752ꢁ
ꢀ0.254 – 0.508ꢁ
.004 – .010
ꢀ0.101 – 0.254ꢁ
.008 – .010
ꢀ0.203 – 0.254ꢁ
0°– 8° TYP
.016 – .050
ꢀ0.406 – 1.270ꢁ
.050
ꢀ1.270ꢁ
BSC
.014 – .019
ꢀ0.355 – 0.483ꢁ
TYP
NOTE:
INCHES
1. DIMENSIONS IN
ꢀMILLIMETERSꢁ
2. DRAWING NOT TO SCALE
3. THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS.
MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED .006" ꢀ0.15mmꢁ
SO8 0303
139567fd
18
LT1395/LT1396/LT1397
PACKAGE DESCRIPTION
S Package
14-Lead Plastic Small Outline (Narrow .150 Inch)
ꢀReference LTC DWG # 05-08-1610ꢁ
.337 – .344
.045 .005
ꢀ8.560 – 8.738ꢁ
.050 BSC
NOTE 3
13
12
11
10
8
14
N
9
N
1
.245
MIN
.160 .005
.150 – .157
ꢀ3.810 – 3.988ꢁ
NOTE 3
.228 – .244
ꢀ5.791 – 6.197ꢁ
2
3
N/2
N/2
7
.030 .005
TYP
RECOMMENDED SOLDER PAD LAYOUT
1
2
3
4
5
6
.010 – .020
ꢀ0.254 – 0.508ꢁ
s 45°
.053 – .069
ꢀ1.346 – 1.752ꢁ
.004 – .010
ꢀ0.101 – 0.254ꢁ
.008 – .010
ꢀ0.203 – 0.254ꢁ
0° – 8° TYP
.050
ꢀ1.270ꢁ
BSC
.014 – .019
ꢀ0.355 – 0.483ꢁ
TYP
.016 – .050
ꢀ0.406 – 1.270ꢁ
S14 0502
NOTE:
INCHES
ꢀMILLIMETERSꢁ
2. DRAWING NOT TO SCALE
1. DIMENSIONS IN
3. THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS.
MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED .006" ꢀ0.15mmꢁ
139567fd
19
LT1395/LT1396/LT1397
TYPICAL APPLICATION
Single Supply RGB Video Amplifier
input. Assuming a 75Ω source impedance for the signal
drivingV ,theTheveninequivalentsignalarrivingatA1’s
IN
The LT1395 can be used with a single supply voltage of
6V or more to drive ground-referenced RGB video. In
Figure6,two1N4148diodesD1andD2havebeenplaced
in series with the output of the LT1395 amplifier A1 but
within the feedback loop formed by resistor R8. These
diodes effectively level-shift A1’s output downward by 2
diodes, allowing the circuit output to swing to ground.
positive input is 3V + 0.4V , with a source impedance
IN
of 714Ω. The combination of these two inputs gives an
output at the cathode of D2 of 2 • V with no additional
IN
DC offset. The 75Ω back termination resistor R9 halves
the signal again such that V
equals a buffered ver-
OUT
sion of V .
IN
It is important to note that the 4.7μF capacitor C1 has
been added to provide enough current to maintain the
voltage drop across diodes D1 and D2 when the circuit
output drops low enough that the diodes might other-
wise turn off. This means that this circuit works fine for
continuous video input, but will require that C1 charge
up after a period of inactivity at the input.
Amplifier A1 is used in a positive gain configuration.
The feedback resistor R8 is 255Ω. The gain resistor
is created from the parallel combination of R6 and R7,
giving a Thevenin equivalent 63.5Ω connected to 3.75V.
This gives an AC gain of +5 from the noninverting input
of amplifier A1 to the cathode of D2. However, the video
input is also attenuated before arriving at A1’s positive
5V
C1
4.7μF
V
S
R1
R6
84.5Ω
6V TO 12V
1000Ω
D1
D2
R9
75Ω
+
–
V
OUT
1N4148 1N4148
A1
LT1395
R2
1300Ω
R3
160Ω
R8
255Ω
V
IN
1395/6/7 TA03
R4
75Ω
R7
255Ω
R5
2.32Ω
Figure 6. Single Supply RGB Video Amplifier (1 of 4 Channels)
RELATED PARTS
PART NUMBER
LT1227/LT1229/LT1230
LT1252/LT1253/LT1254
LT1363/LT1364/LT1365
LT1398/LT1399
LT1675
DESCRIPTION
COMMENTS
140MHz Single/Dual/Quad Current Feedback Amplifier 1100V/μs Slew Rate, Single Adds Shutdown Pin
Low Cost Video Amplifiers
Single, Dual and Quad 100MHz Current Feedback Amplifiers
1000V/μs Slew Rate, Voltage Feedback
70MHz Single/Dual/Quad Op Amps
Dual/Triple Current Feedback Amplifiers
Triple 2:1 Buffered Video Multiplexer
Low Cost Triple Current Feedback Amplifiers
300MHz Bandwidth, 0.1dB Flatness > 150MHz with Shutdown
2.5ns Switching Time, 250MHz Bandwidth
LT6559
300MHz Bandwidth, Specified at +5V and 5V, 3mm × 3mm
QFN Package
139567fd
LT 0709 REV D • PRINTED IN USA
LinearTechnology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
20
●
●
© LINEAR TECHNOLOGY CORPORATION 1999
ꢀ408ꢁ 432-1900 FAX: ꢀ408ꢁ 434-0507 www.linear.com
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