LT1819IS8#PBF [Linear]
LT1819 - 400MHz, 2500V/µs, 9mA Dual Operational Amplifiers; Package: SO; Pins: 8; Temperature Range: -40°C to 85°C;
| 型号： | LT1819IS8#PBF |
| 厂家： | 
Linear |
| 描述： | LT1819 - 400MHz, 2500V/µs, 9mA Dual Operational Amplifiers; Package: SO; Pins: 8; Temperature Range: -40°C to 85°C 放大器 光电二极管 |
| 文件： | 总18页 (文件大小：1128K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
LT1818/LT1819
400MHz, 2500V/µs, 9mA
Single/Dual Operational
Amplifiers
FEATURES
DESCRIPTION
TheLT®1818/LT1819aresingle/dualwidebandwidth,high
slew rate, low noise and distortion operational amplifiers
with excellent DC performance. The LT1818/LT1819 have
been designed for wider bandwidth and slew rate, much
lower input offset voltage and lower noise and distortion
than devices with comparable supply current. The circuit
topology is a voltage feedback amplifier with the excellent
slewing characteristics of a current feedback amplifier.
n
400MHz Gain Bandwidth Product
n
2500V/μs Slew Rate
n
–85dBc Distortion at 5MHz
9mA Supply Current Per Amplifier
n
n
6nꢀ/√Hz Input Noise ꢀoltage
UnityꢂGain Stable
n
n
1.ꢁmꢀ Maximum Input Offset ꢀoltage
n
8μA Maximum Input Bias Current
n
800nA Maximum Input Offset Current
The output drives a 100Ω load to ±±.8ꢀ with ±ꢁꢀ supꢂ
plies. On a single ꢁꢀ supply, the output swings from 1ꢀ
to 4ꢀ with a 100Ω load connected to 2.ꢁꢀ. The amplifier
is unityꢂgain stable with a 20pF capacitive load without the
need for a series resistor. Harmonic distortion is –8ꢁdBc
n
40mA Minimum Output Current, ꢀ
= ±±ꢀ
OUT
n
n
n
n
±±.ꢁꢀ Minimum Input CMꢃ, ꢀ = ±ꢁꢀ
S
Specified at ±ꢁꢀ, Single ꢁꢀ Supplies
Operating Temperature ꢃange: –40°C to 8ꢁ°C
Low Profile (1mm) TSOTꢂ2± (ThinSOT™) Package
up to ꢁMHz for a 2ꢀ output at a gain of 2.
PꢂP
APPLICATIONS
The LT1818/LT1819 are manufactured on Linear Techꢂ
nology’s advanced low voltage complementary bipolar
process. The LT1818 (single op amp) is available in
TSOTꢂ2± and SOꢂ8 packages; the LT1819 (dual op amp)
is available in MSOPꢂ8 and SOꢂ8 packages.
n
Wideband Amplifiers
n
Buffers
n
Active Filters
n
ꢀideo and ꢃF Amplification
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. ThinSOT is a trademark of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
n
Communication ꢃeceivers
n
Cable Drivers
n
Data Acquisition Systems
TYPICAL APPLICATION
FFT of Single Supply ADC Driver
0
f
f
= ꢁ.102ꢁ±9MHz
= ꢁ0Msps
Single Supply Unity-Gain ADC Driver for Oversampling Applications
IN
S
ꢀ
–10
–20
–±0
–40
–ꢁ0
–60
–70
–80
–90
–100
–110
= ±00mꢀ
IN
PꢂP
SFDꢃ = 78dB
ꢁꢀ
ꢁꢀ
8192 POINT FFT
NO WINDOWING
Oꢃ AꢀEꢃAGING
2.ꢁꢀDC
±1ꢀAC
+
–
ꢁ1.1Ω
18pF
LTC1744
14 BITS
ꢁ0Msps
(SET FOꢃ 2ꢀ
FULL SCALE)
+
–
LT1818
A
A
IN
IN
PꢂP
2.ꢁꢀ
2
±
18189 TA01
0
ꢁM
10M
1ꢁM
20M
2ꢁM
FꢃEQUENCY (Hz)
18189 TA02
18189fb
1
LT1818/LT1819
(Note 1)
ABSOLUTE MAXIMUM RATINGS
+
–
Total Supply ꢀoltage (ꢀ to ꢀ )..............................12.6ꢀ
Differential Input ꢀoltage (Transient Only, Note 2).....±6ꢀ
Output ShortꢂCircuit Duration (Note ±) ............ Indefinite
Operating Temperature ꢃange (Note 8).... –40°C to 8ꢁ°C
Specified Temperature ꢃange (Note 9) .... –40°C to 8ꢁ°C
Maximum Junction Temperature........................... 1ꢁ0°C
Storage Temperature ꢃange................... –6ꢁ°C to 1ꢁ0°C
Lead Temperature (Soldering, 10 sec) .................. ±00°C
PIN CONFIGURATION
TOP ꢀIEW
TOP ꢀIEW
+
OUT A
–IN A
+IN A
1
2
±
4
8 ꢀ
OUT 1
1
2
±
ꢁ
4
ꢀ+
7 OUT B
6 –IN B
ꢁ +IN B
–
A
ꢀ
B
+
–
–
+IN
–IN
ꢀ
MS8 PACKAGE
8ꢂLEAD PLASTIC MSOP
Sꢁ PACKAGE
ꢁꢂLEAD PLASTIC TSOTꢂ2±
T
JMAX
= 1ꢁ0°C, θ = 2ꢁ0°C/W (NOTE 10)
JA
T
= 1ꢁ0°C, θ = 2ꢁ0°C/W (NOTE 10)
JMAX
JA
TOP ꢀIEW
TOP ꢀIEW
+
NC
–IN
+IN
1
2
±
4
8
7
6
ꢁ
NC
OUT A
–IN A
+IN A
1
2
±
4
8
7
6
ꢁ
ꢀ
+
ꢀ
OUT B
–IN B
+IN B
–
+
A
OUT
NC
B
–
–
ꢀ
ꢀ
S8 PACKAGE
8ꢂLEAD PLASTIC SO
S8 PACKAGE
8ꢂLEAD PLASTIC SO
T
= 1ꢁ0°C, θ = 1ꢁ0°C/W (NOTE 10)
T = 1ꢁ0°C, θ = 1ꢁ0°C/W (NOTE 10)
JMAX JA
JMAX
JA
ORDER INFORMATION
LEAD FREE FINISH
LT1818CSꢁ#PBF
LT1818ISꢁ#PBF
LT1818CS8#PBF
LT1818IS8#PBF
LT1819CMS8#PBF
LT1819IMS8#PBF
LT1819CS8#PBF
LT1819IS8#PBF
TAPE AND REEL
PART MARKING*
LTF7
PACKAGE DESCRIPTION
ꢁꢂLead Plastic TSOTꢂ2±
ꢁꢂLead Plastic TSOTꢂ2±
8ꢂLead Plastic SO
SPECIFIED TEMPERATURE RANGE
0°C to 70°C
LT1818CSꢁ#TꢃPBF
LT1818ISꢁ#TꢃPBF
LT1818CS8#TꢃPBF
LT1818IS8#TꢃPBF
LT1819CMS8#TꢃPBF
LT1819IMS8#TꢃPBF
LT1819CS8#TꢃPBF
LT1819IS8#TꢃPBF
LTF7
–40°C to 8ꢁ°C
0°C to 70°C
1818
1818I
8ꢂLead Plastic SO
–40°C to 8ꢁ°C
0°C to 70°C
LTE7
8ꢂLead Plastic MSOP
8ꢂLead Plastic MSOP
8ꢂLead Plastic SO
LTEꢁ
–40°C to 8ꢁ°C
0°C to 70°C
1819
1819I
8ꢂLead Plastic SO
–40°C to 8ꢁ°C
Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.
Consult LTC Marketing for information on nonꢂstandard lead based finish parts.
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/
18189fb
2
LT1818/LT1819
ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. (Note 9) VS = 5V, VCM = 0V, unless otherwise noted.
SYMBOL PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
ꢀ
Input Offset ꢀoltage
(Note 4)
0.2
1.ꢁ
2.0
±.0
mꢀ
mꢀ
mꢀ
OS
l
l
T = 0°C to 70°C
A
T = –40°C to 8ꢁ°C
A
l
l
Input Offset ꢀoltage Drift
Input Offset Current
T = 0°C to 70°C (Note 7)
A
10
10
1ꢁ
±0
μꢀ/°C
μꢀ/°C
Δꢀ /ΔT
A
OS
T = –40°C to 8ꢁ°C (Note 7)
I
60
800
1000
1200
nA
nA
nA
OS
B
l
l
T = 0°C to 70°C
A
T = –40°C to 8ꢁ°C
A
I
Input Bias Current
–2
±8
±10
±12
μA
μA
μA
l
l
T = 0°C to 70°C
A
T = –40°C to 8ꢁ°C
A
e
Input Noise ꢀoltage Density
Input Noise Current Density
Input ꢃesistance
f = 10kHz
6
nꢀ/√Hz
pA/√Hz
n
i
n
f = 10kHz
1.2
–
+
ꢃ
ꢀ
= ꢀ + 1.ꢁꢀ to ꢀ – 1.ꢁꢀ
1.ꢁ
ꢁ
7ꢁ0
MΩ
kΩ
IN
CM
Differential
C
ꢀ
Input Capacitance
1.ꢁ
pF
IN
Input ꢀoltage ꢃange
(Positive/Negative)
Guaranteed by CMꢃꢃ
T = –40°C to 8ꢁ°C
±±.ꢁ
±±.ꢁ
±4.2
ꢀ
ꢀ
CM
l
A
CMꢃꢃ
Common Mode ꢃejection ꢃatio
ꢀ
= ±±.ꢁꢀ
7ꢁ
7±
72
8ꢁ
dB
dB
dB
CM
A
A
l
l
T = 0°C to 70°C
T = –40°C to 8ꢁ°C
Minimum Supply ꢀoltage
Guaranteed by PSꢃꢃ
T = –40°C to 8ꢁ°C
±1.2ꢁ
97
±2
±2
ꢀ
ꢀ
l
A
PSꢃꢃ
Power Supply ꢃejection ꢃatio
ꢀ = ±2ꢀ to ±ꢁ.ꢁꢀ
78
76
7ꢁ
dB
dB
dB
S
l
l
T = 0°C to 70°C
A
A
T = –40°C to 8ꢁ°C
A
LargeꢂSignal ꢀoltage Gain
ꢀ
ꢀ
ꢀ
= ±±ꢀ, ꢃ = ꢁ00Ω
1.ꢁ
1.0
0.6
2.ꢁ
6
ꢀ/mꢀ
ꢀ/mꢀ
ꢀ/mꢀ
ꢀOL
OUT
A
A
L
l
l
T = 0°C to 70°C
T = –40°C to 8ꢁ°C
= ±±ꢀ, ꢃ = 100Ω
1.0
0.7
0.6
ꢀ/mꢀ
ꢀ/mꢀ
ꢀ/mꢀ
OUT
A
A
L
l
l
T = 0°C to 70°C
T = –40°C to 8ꢁ°C
Channel Separation
= ±±ꢀ, LT1819
82
81
80
100
±4.1
±±.8
±70
±200
dB
dB
dB
OUT
A
A
l
l
T = 0°C to 70°C
T = –40°C to 8ꢁ°C
ꢀ
Output Swing (Positive/Negative)
ꢃ = ꢁ00Ω, ±0mꢀ Overdrive
±±.8
±±.7
±±.6
ꢀ
ꢀ
ꢀ
OUT
L
l
l
T = 0°C to 70°C
T = –40°C to 8ꢁ°C
A
A
ꢃ = 100Ω, ±0mꢀ Overdrive
±±.ꢁ0
±±.2ꢁ
±±.1ꢁ
ꢀ
ꢀ
ꢀ
L
l
l
T = 0°C to 70°C
T = –40°C to 8ꢁ°C
A
A
I
I
Output Current
ꢀ = ±±ꢀ, ±0mꢀ Overdrive
OUT
±40
±±ꢁ
±±0
mA
mA
mA
OUT
l
l
T = 0°C to 70°C
T = –40°C to 8ꢁ°C
A
A
Output ShortꢂCircuit Current
Slew ꢃate
ꢀ
OUT
= 0ꢀ, 1ꢀ Overdrive (Note ±)
±100
±90
±70
mA
mA
mA
SC
l
l
T = 0°C to 70°C
A
A
T = –40°C to 8ꢁ°C
Sꢃ
A = 1
ꢀ
2ꢁ00
1800
ꢀ/μs
A = –1 (Note ꢁ)
ꢀ
900
7ꢁ0
600
ꢀ/μs
ꢀ/μs
ꢀ/μs
l
l
TA = 0°C to 70°C
TA = –40°C to 8ꢁ°C
FPBW
FullꢂPower Bandwidth
6ꢀ (Note 6)
PꢂP
9ꢁ
MHz
18189fb
3
LT1818/LT1819
ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. (Note 9) VS = 5V, VCM = 0V, unless otherwise noted.
SYMBOL PARAMETER
GBW GainꢂBandwidth Product
CONDITIONS
f = 4MHz, ꢃ = ꢁ00Ω
MIN
TYP
MAX
UNITS
270
260
2ꢁ0
400
MHz
MHz
MHz
L
l
l
T = 0°C to 70°C
A
T = –40°C to 8ꢁ°C
A
t , t
ꢃise Time, Fall Time
Propagation Delay
Overshoot
A = 1, 10% to 90%, 0.1ꢀ Step
0.6
1.0
20
ns
ns
%
ns
r
f
ꢀ
t
PD
A = 1, ꢁ0% to ꢁ0%, 0.1ꢀ Step
ꢀ
OS
A = 1, 0.1ꢀ, ꢃ = 100Ω
ꢀ L
t
S
Settling Time
A = –1, 0.1%, ꢁꢀ
ꢀ
10
HD
Harmonic Distortion
HD2, A = 2, f = ꢁMHz, ꢀ
= 2ꢀ , ꢃ = ꢁ00Ω
–8ꢁ
–89
dBc
dBc
ꢀ
OUT
OUT
PꢂP
L
HD±, A = 2, f = ꢁMHz, ꢀ
= 2ꢀ , ꢃ = ꢁ00Ω
ꢀ
PꢂP L
dG
dP
Differential Gain
Differential Phase
Supply Current
A = 2, ꢃ = 1ꢁ0Ω
0.07
0.02
9
%
ꢀ
L
A = 2, ꢃ = 1ꢁ0Ω
DEG
ꢀ
L
I
S
Per Amplifier
T = 0°C to 70°C
10
1±
14
mA
mA
mA
l
l
A
T = –40°C to 8ꢁ°C
A
The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C.
(Note 9) VS = 5V, 0V; VCM = 2.5V, RL to 2.5V unless otherwise noted.
SYMBOL PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
ꢀ
Input Offset ꢀoltage
Input Offset ꢀoltage Drift
Input Offset Current
Input Bias Current
(Note 4)
0.4
2.0
2.ꢁ
±.ꢁ
mꢀ
mꢀ
mꢀ
OS
l
l
T = 0°C to 70°C
A
T = –40°C to 8ꢁ°C
A
(Note 7)
Δꢀ /ΔT
OS
l
l
T = 0°C to 70°C
10
10
1ꢁ
±0
μꢀ/°C
μꢀ/°C
A
T = –40°C to 8ꢁ°C
A
I
60
800
1000
1200
nA
nA
nA
OS
B
l
l
T = 0°C to 70°C
A
T = –40°C to 8ꢁ°C
A
I
–2.4
±8
±10
±12
μA
μA
μA
l
l
T = 0°C to 70°C
A
T = –40°C to 8ꢁ°C
A
e
Input Noise ꢀoltage Density
Input Noise Current Density
Input ꢃesistance
f = 10kHz
6
nꢀ/√Hz
pA/√Hz
n
i
n
f = 10kHz
1.4
–
+
ꢃ
ꢀ
= ꢀ + 1.ꢁꢀ to ꢀ – 1.ꢁꢀ
1.ꢁ
ꢁ
7ꢁ0
MΩ
kΩ
IN
CM
Differential
C
ꢀ
Input Capacitance
1.ꢁ
4.2
pF
IN
Input ꢀoltage ꢃange (Positive)
Guaranteed by CMꢃꢃ
±.ꢁ
±.ꢁ
ꢀ
ꢀ
CM
l
l
T = –40°C to 8ꢁ°C
A
Input ꢀoltage ꢃange (Negative)
Common Mode ꢃejection ꢃatio
Guaranteed by CMꢃꢃ
0.8
82
1.ꢁ
1.ꢁ
ꢀ
ꢀ
T = –40°C to 8ꢁ°C
A
CMꢃꢃ
PSꢃꢃ
ꢀ
= 1.ꢁꢀ to ±.ꢁꢀ
7±
71
70
dB
dB
dB
CM
A
A
l
l
T = 0°C to 70°C
T = –40°C to 8ꢁ°C
Minimum Supply ꢀoltage
Guaranteed by PSꢃꢃ
T = –40°C to 8ꢁ°C
±1.2ꢁ
97
±2
±2
ꢀ
ꢀ
l
A
Power Supply ꢃejection ꢃatio
ꢀ = 4ꢀ to 11ꢀ
78
76
7ꢁ
dB
dB
dB
S
l
l
T = 0°C to 70°C
A
A
T = –40°C to 8ꢁ°C
18189fb
4
LT1818/LT1819
ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. (Note 9) VS = 5V, 0V; VCM = 2.5V, RL to 2.5V unless otherwise noted.
SYMBOL PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
A
LargeꢂSignal ꢀoltage Gain
ꢀ
ꢀ
ꢀ
= 1.ꢁꢀ to ±.ꢁꢀ, ꢃ = ꢁ00Ω
1.0
0.7
0.6
2
ꢀ/mꢀ
ꢀ/mꢀ
ꢀ/mꢀ
ꢀOL
OUT
A
A
L
l
l
T = 0°C to 70°C
T = –40°C to 8ꢁ°C
= 1.ꢁꢀ to ±.ꢁꢀ, ꢃ = 100Ω
0.7
0.ꢁ
0.4
4
100
4.2
4
ꢀ/mꢀ
ꢀ/mꢀ
ꢀ/mꢀ
OUT
A
A
L
l
l
T = 0°C to 70°C
T = –40°C to 8ꢁ°C
Channel Separation
= 1.ꢁꢀ to ±.ꢁꢀ, LT1819
81
80
79
dB
dB
dB
OUT
A
A
l
l
T = 0°C to 70°C
T = –40°C to 8ꢁ°C
ꢀ
Output Swing (Positive)
ꢃ = ꢁ00Ω, ±0mꢀ Overdrive
±.9
±.8
±.7
ꢀ
ꢀ
ꢀ
OUT
L
l
l
T = 0°C to 70°C
T = –40°C to 8ꢁ°C
A
A
ꢃ = 100Ω, ±0mꢀ Overdrive
±.7
±.6
±.ꢁ
ꢀ
ꢀ
ꢀ
L
l
l
T = 0°C to 70°C
T = –40°C to 8ꢁ°C
A
A
Output Swing (Negative)
ꢃ = ꢁ00Ω, ±0mꢀ Overdrive
0.8
1
1.1
1.2
1.±
ꢀ
ꢀ
ꢀ
L
l
l
T = 0°C to 70°C
A
T = –40°C to 8ꢁ°C
A
ꢃ = 100Ω, ±0mꢀ Overdrive
1.±
1.4
1.ꢁ
ꢀ
ꢀ
ꢀ
L
l
l
T = 0°C to 70°C
A
A
T = –40°C to 8ꢁ°C
I
I
Output Current
ꢀ
= 1.ꢁꢀ or ±.ꢁꢀ, ±0mꢀ Overdrive
OUT
±±0
±2ꢁ
±20
±ꢁ0
±140
mA
mA
mA
OUT
l
l
T = 0°C to 70°C
A
T = –40°C to 8ꢁ°C
A
Output ShortꢂCircuit Current
Slew ꢃate
ꢀ
OUT
= 2.ꢁꢀ, 1ꢀ Overdrive (Note ±)
±80
±70
±ꢁ0
mA
mA
mA
SC
T = 0°C to 70°C
A
T = –40°C to 8ꢁ°C
A
Sꢃ
A = 1
ꢀ
1000
800
ꢀ/μs
A = –1 (Note ꢁ)
ꢀ
4ꢁ0
±7ꢁ
±00
ꢀ/μs
ꢀ/μs
ꢀ/μs
l
l
T = 0°C to 70°C
A
T = –40°C to 8ꢁ°C
A
FPBW
GBW
FullꢂPower Bandwidth
2ꢀ (Note 6)
12ꢁ
±60
MHz
PꢂP
GainꢂBandwidth Product
f = 4MHz, ꢃ = ꢁ00Ω
240
2±0
220
MHz
MHz
MHz
L
l
l
T = 0°C to 70°C
A
T = –40°C to 8ꢁ°C
A
t , t
ꢃise Time, Fall Time
Propagation Delay
Overshoot
A = 1, 10% to 90%, 0.1ꢀ Step
0.7
1.1
20
ns
ns
%
r
f
ꢀ
t
PD
A = 1, ꢁ0% to ꢁ0%, 0.1ꢀ Step
ꢀ
OS
HD
A = 1, 0.1ꢀ, ꢃ = 100Ω
ꢀ L
Harmonic Distortion
HD2, A = 2, f = ꢁMHz, ꢀ
= 2ꢀ , ꢃ = ꢁ00Ω
= 2ꢀ , ꢃ = ꢁ00Ω
–72
–74
dBc
dBc
ꢀ
OUT
OUT
PꢂP
PꢂP L
L
HD±, A = 2, f = ꢁMHz, ꢀ
ꢀ
dG
dP
Differential Gain
Differential Phase
Supply Current
A = 2, ꢃ = 1ꢁ0Ω
0.07
0.07
8.ꢁ
%
ꢀ
L
A = 2, ꢃ = 1ꢁ0Ω
DEG
ꢀ
L
I
S
Per Amplifier
T = 0°C to 70°C
10
1±
14
mA
mA
mA
l
l
A
T = –40°C to 8ꢁ°C
A
Note 1: Stresses beyond those listed under Absolute Maximum ꢃatings
may cause permanent damage to the device. Exposure to any Absolute
Maximum ꢃating condition for extended periods may affect device
reliability and lifetime.
Note 3: A heat sink may be required to keep the junction temperature
below absolute maximum when the output is shorted indefinitely.
Note 4: Input offset voltage is pulse tested and is exclusive of warmꢂup
drift.
Note 2: Differential inputs of ±6ꢀ are appropriate for transient operation
only, such as during slewing. Large sustained differential inputs can cause
excessive power dissipation and may damage the part.
18189fb
5
LT1818/LT1819
ELECTRICAL CHARACTERISTICS
Note 5: With ±ꢁꢀ supplies, slew rate is tested in a closedꢂloop gain of –1
by measuring the rise time of the output from –2ꢀ to 2ꢀ with an output
step from –±ꢀ to ±ꢀ. With single ꢁꢀ supplies, slew rate is tested in a
closedꢂloop gain of –1 by measuring the rise time of the output from 1.ꢁꢀ
to ±.ꢁꢀ with an output step from 1ꢀ to 4ꢀ. Falling edge slew rate is not
production tested, but is designed, characterized and expected to be within
10% of the rising edge slew rate.
Note 8: The LT1818C/LT1818I and LT1819C/LT1819I are guaranteed
functional over the operating temperature range of –40°C to 8ꢁ°C.
Note 9: The LT1818C/LT1819C are guaranteed to meet specified
performance from 0°C to 70°C and is designed, characterized and
expected to meet the extended temperature limits, but is not tested
at –40°C and 8ꢁ°C. The LT1818I/LT1819I are guaranteed to meet the
extended temperature limits.
Note 6: Fullꢂpower bandwidth is calculated from the slew rate:
Note 10: Thermal resistance (θ ) varies with the amount of PC board
JA
FPBW = Sꢃ/2πꢀ
metal connected to the package. The specified values are for short
traces connected to the leads. If desired, the thermal resistance can be
P
Note 7: This parameter is not 100% tested.
–
significantly reduced by connecting the ꢀ pin to a large metal area.
TYPICAL PERFORMANCE CHARACTERISTICS
Input Common Mode Range
Input Bias Current vs Common
Mode Voltage
Supply Current vs Temperature
vs Supply Current
+
2
0
12
10
8
ꢀ
T
= 2ꢁ°C
= ±ꢁꢀ
T
= 2ꢁ°C
OS
PEꢃ AMPLIFIEꢃ
A
S
A
–0.ꢁ
–1.0
–1.ꢁ
–2.0
ꢀ
$ꢀ < 1mꢀ
ꢀ
ꢀ
= ±ꢁꢀ
S
S
–2
–4
–6
–8
= ±2.ꢁꢀ
6
2.0
1.ꢁ
1.0
0.ꢁ
4
2
–
0
ꢀ
0
2.ꢁ
–ꢁ
ꢁ
–2.ꢁ
–ꢁ0 –2ꢁ
0
2ꢁ
ꢁ0
7ꢁ 100 12ꢁ
0
2
±
4
ꢁ
6
7
1
TEMPEꢃATUꢃE (°C)
INPUT COMMON MODE ꢀOLTAGE (ꢀ)
SUPPLY ꢀOLTAGE (±ꢀ)
18189 G0±
18189 G01
18189 G02
Input Bias Current vs Temperature
Input Noise Spectral Density
Open-Loop Gain vs Resistive Load
0
100
10
1
10
80
77
74
71
68
6ꢁ
62
ꢀ
= 0ꢀ
T
= 2ꢁ°C
T
= 2ꢁ°C
= ±ꢁꢀ
= 101
= 10k
CM
A
A
S
ꢀ
ꢀ
A
–0.4
ꢃ
S
–0.8
–1.2
–1.6
–2.0
–2.4
i
n
1
e
n
ꢀ
= ±ꢁꢀ
S
ꢀ
ꢀ
= ±ꢁꢀ
S
S
ꢀ
= ±2.ꢁꢀ
S
= ±2.ꢁꢀ
–2.8
0.1
100k
ꢁ0
100 12ꢁ
–ꢁ0 –2ꢁ
0
2ꢁ
7ꢁ
10
100
1k
FꢃEQUENCY (Hz)
10k
100
1k
LOAD ꢃESISTANCE (Ω)
10k
TEMPEꢃATUꢃE (°C)
18189 G0ꢁ
18189 G06
18189 G04
18189fb
6
LT1818/LT1819
TYPICAL PERFORMANCE CHARACTERISTICS
Output Voltage Swing
Output Voltage Swing
Open-Loop Gain vs Temperature
vs Supply Voltage
vs Load Current
+
ꢁ
ꢀ
80
77
74
71
68
6ꢁ
62
T
= 2ꢁ°C
= ±ꢁꢀ
OS
ꢀ
ꢀ
= ±ꢁꢀ
= ±±ꢀ
T = 2ꢁ°C
A
A
S
S
O
–0.ꢁ
–1.0
–1.ꢁ
–2.0
ꢀ
$ꢀ = ±0mꢀ
OS
ꢃ
= ꢁ00Ω
= 100Ω
L
ꢃ
= 100Ω
$ꢀ = ±0mꢀ
L
4
±
2
ꢃ
L
SOUꢃCE
–2
–±
–4
–ꢁ
SINK
2.0
1.ꢁ
1.0
0.ꢁ
ꢃ
= ꢁ00Ω
L
ꢃ
L
= 100Ω
ꢃ
= ꢁ00Ω
L
–
ꢀ
ꢁ0
TEMPEꢃATUꢃE (°C)
100 12ꢁ
–80
0
–ꢁ0 –2ꢁ
0
2ꢁ
7ꢁ
4
7
–120
–40
40
80
120
0
2
±
ꢁ
6
1
SUPPLY ꢀOLTAGE (±ꢀ)
OUTPUT CUꢃꢃENT (mA)
18189 G07
18189 G09
18189 G08
Output Short-Circuit Current
vs Temperature
Output Current vs Temperature
Output Impedance vs Frequency
240
200
160
120
100
10
1ꢁ0
ꢀ
ꢀ
= ±ꢁꢀ
= ±1ꢀ
S
IN
SOUꢃCE
SINK
12ꢁ
100
7ꢁ
SOUꢃCE, ꢀ = ±ꢁꢀ
S
A
= 100
ꢀ
SINK, ꢀ = ±ꢁꢀ
SOUꢃCE, ꢀ = ±2.ꢁꢀ
S
S
A
= 10
ꢀ
1
SINK, ꢀ = ±2.ꢁꢀ
S
80
40
0
ꢁ0
2ꢁ
0
A
= 1
ꢀ
0.1
0.01
$ꢀ = ±0mꢀ
OS
ꢀ
ꢀ
= ±±ꢀ FOꢃ ꢀ = ±ꢁꢀ
OUT
OUT
S
T
= 2ꢁ°C
= ±ꢁꢀ
A
S
= ±1ꢀ FOꢃ ꢀ = ±2.ꢁꢀ
S
ꢀ
ꢁ0
100 12ꢁ
–ꢁ0 –2ꢁ
0
2ꢁ
7ꢁ
ꢁ0
0
TEMPEꢃATUꢃE (°C)
100 12ꢁ
–ꢁ0 –2ꢁ
2ꢁ
7ꢁ
10k
100k
1M
10M
100M
FꢃEQUENCY (Hz)
TEMPEꢃATUꢃE (°C)
18189 G12
18189 G10
18189 G11
Gain Bandwidth and Phase
Margin vs Temperature
Gain and Phase vs Frequency
Gain vs Frequency, AV = 1
80
70
60
ꢁ0
180
160
140
120
ꢁ
0
440
400
±60
T
= 2ꢁ°C
= 1
= ꢁ00Ω
ꢃ
= ꢁ00Ω
A
ꢀ
L
L
GBW
S
A
ꢀ
= ±ꢁꢀ
S
ꢀ
= ±ꢁꢀ
ꢃ
ꢀ = ±2.ꢁꢀ
S
GBW
= ±2.ꢁꢀ
PHASE
GAIN
ꢀ
S
40
±0
100
80
20
10
60
40
20
0
ꢁ0
PHASE MAꢃGIN
= ±2.ꢁꢀ
PHASE MAꢃGIN
= ±ꢁꢀ
–ꢁ
ꢀ
ꢀ
S
S
0
40
T
= 2ꢁ°C
A
A
= –1
ꢀ
–10
ꢃ
= ꢁ00Ω
L
–20
10k
–20
100M ꢁ00M
–10
1M
±0
100k
1M
10M
10M
100M
ꢁ00M
–ꢁ0 –2ꢁ
0
2ꢁ
ꢁ0
7ꢁ 100 12ꢁ
TEMPEꢃATUꢃE (°C)
FꢃEQUENCY (Hz)
FꢃEQUENCY (Hz)
18189 G1±
18189 G16
18189 G1ꢁ
18189fb
7
LT1818/LT1819
TYPICAL PERFORMANCE CHARACTERISTICS
Gain-Bandwidth and Phase
Margin vs Supply Voltage
Gain vs Frequency, AV = 2
Gain vs Frequency, AV = –1
10
ꢁ
ꢁ
0
4ꢁ0
400
±ꢁ0
±00
ꢃ
= ꢁ00Ω
T
= 2ꢁ°C
L
GBW
= ꢁ00Ω
A
ꢀ
= ±ꢁꢀ
ꢃ
L
S
ꢀ
= ±2.ꢁꢀ
S
ꢃ
= 100Ω
L
GBW
= 100Ω
ꢃ
L
0
PHASE MAꢃGIN
= 100Ω
4ꢁ
–ꢁ
ꢃ
L
T
A
ꢀ
ꢃ
C
= 2ꢁ°C
= 2
A
ꢀ
S
F
F
–ꢁ
–10
40
±ꢁ
±0
T
= 2ꢁ°C
A = –1
ꢀ
L
= ±ꢁꢀ
A
PHASE MAꢃGIN
= ꢃ = ꢁ00Ω
ꢃ
= ꢁ00Ω
G
L
ꢃ
= ꢃ = ꢃ = ꢁ00Ω
F G
= 1pF
–10
1M
1M
10M
FꢃEQUENCY (Hz)
100M ±00M
2
±
4
ꢁ
6
10M
FꢃEQUENCY (Hz)
100M ±00M
SUPPLY ꢀOLTAGE (±ꢀ)
18189 G17
18189 G18
18189 G19
Power Supply Rejection Ratio
vs Frequency
Common Mode Rejection Ratio
vs Frequency
Slew Rate vs Input Step
100
80
60
40
20
0
100
80
60
40
20
0
2000
1600
1200
800
400
0
T
=2ꢁ°C
= –1
T
A
ꢀ
= 2ꢁ°C
T = 2ꢁ°C
A
A
ꢀ
S
A
ꢀ
S
A
ꢀ
= 1
= ±ꢁꢀ
= ±ꢁꢀ
ꢃ
= ꢃ = ꢃ = ꢁ00Ω
G L
F
+
–
Sꢃ
Sꢃ
ꢀ
= ±2.ꢁꢀ
ꢀ = ±ꢁꢀ
S
PSꢃꢃ
+PSꢃꢃ
S
1k
10k
100k
1M
10M
100M
1k
10k
100k
1M
10M
100M
2
±
4
ꢁ
6
INPUT STEP (ꢀ
)
FꢃEQUENCY (Hz)
FꢃEQUENCY (Hz)
PꢂP
18189 G20
18189 G21
18189 G22
Differential Gain and Phase
vs Supply Voltage
Slew Rate vs Supply Voltage
Slew Rate vs Temperature
2000
1ꢁ00
1000
ꢁ00
0
2400
2000
1600
1200
T
A
= 2ꢁ°C
T
=2ꢁ°C
A
ꢀ
F
0.10
0.08
0.06
0.04
0.02
0
A
= –1
DIFFEꢃENTIAL GAIN
= 1ꢁ0Ω
ꢀ
= 6ꢀ
ꢃ
= ꢃ = ꢃ = ꢁ00Ω
G
IN
PꢂP
PꢂP
L
ꢀ
= ±ꢁꢀ
S
ꢃ
L
0.12
0.10
0.08
0.06
0.04
0.02
0
ꢀ
= ±2.ꢁꢀ
ꢀ
= 2ꢀ
S
IN
800
400
0
DIFFEꢃENTIAL PHASE
ꢃ
= 1ꢁ0Ω
L
A
= –1
G L
ꢀ
F
ꢃ
= ꢃ = ꢃ = ꢁ00Ω
2
±
4
ꢁ
6
0
2
±
4
ꢁ
6
7
–ꢁ0
2ꢁ
ꢁ0
7ꢁ
100 12ꢁ
1
–2ꢁ
0
SUPPLY ꢀOLTAGE (±ꢀ)
SUPPLY ꢀOLTAGE (±ꢀ)
TEMPEꢃATUꢃE (°C)
18189 G2ꢁ
18189 G2±
18189 G24
18189fb
8
LT1818/LT1819
TYPICAL PERFORMANCE CHARACTERISTICS
Distortion vs Frequency, AV = 2
Distortion vs Frequency, AV = –1
Distortion vs Frequency, AV = 1
–60
–70
–60
–70
–60
–70
A
ꢀ
ꢀ
= 1
= ±ꢁꢀ
= 2ꢀ
ꢀ
S
O
2ND, ꢃ = 100Ω
L
2ND, ꢃ = 100Ω
L
±ꢃD, ꢃ = 100Ω
2ND, ꢃ = ꢁ00Ω
L
L
PꢂP
2ND, ꢃ = 100Ω
L
±ꢃD, ꢃ = 100Ω
–80
–80
L
–80
2ND, ꢃ = ꢁ00Ω
L
±ꢃD, ꢃ = 100Ω
L
±ꢃD, ꢃ = ꢁ00Ω
L
–90
–90
–90
±ꢃD, ꢃ = ꢁ00Ω
L
–100
–110
–120
–100
–110
–120
–100
–110
–120
±ꢃD, ꢃ = ꢁ00Ω
L
A
ꢀ
ꢀ
= –1
= ±ꢁꢀ
= 2ꢀ
A
ꢀ
ꢀ
= 2
= ±ꢁꢀ
= 2ꢀ
ꢀ
S
O
ꢀ
S
O
2ND, ꢃ = ꢁ00Ω
L
PꢂP
PꢂP
1M
10M
2M
ꢁM
1M
10M
2M
ꢁM
1M
10M
2M
ꢁM
FꢃEQUENCY (Hz)
FꢃEQUENCY (Hz)
FꢃEQUENCY (Hz)
18189 G27
18189 G28
18189 G26
Channel Separation vs Frequency
0.1% Settling Time
Small-Signal Transient, 20dB Gain
110
100
90
80
70
60
ꢁ0
40
±0
20
10
INPUT
TꢃIGGEꢃ
(1ꢀ/DIꢀ)
OUTPUT
20mꢀ/DIꢀ
SETTLING
ꢃESIDUE
(ꢁmꢀ/DIꢀ)
T
= 2ꢁ°C
A
S
ꢀ
18189 G±0
ꢀ
A
= ±ꢁꢀ
ꢀ
ꢀ
= ±ꢁꢀ
OUT
SETTLING TIME = 9ns
= –1
= ꢃ = ꢁ00Ω
ꢁns/DIꢀ
18189 G±1
S
10ns/DIꢀ
= –1
= ±2.ꢁꢀ
ꢃ
= ꢃ = ꢃ = ꢁ00Ω
F
G
L
A
ꢃ
ꢀ
10k
100k
1M
10M
100M
1G
F
F
G
FꢃEQUENCY (Hz)
C
= 4.1pF
18188 G29
Large-Signal Transient, AV = –1
Large-Signal Transient, AV = 1
Large-Signal Transient, AV = –1
1ꢀ/DIꢀ
2ꢀ/DIꢀ
1ꢀ/DIꢀ
18189 G±±
18189 G±2
18189 G±4
ꢀ
= ±ꢁꢀ
10ns/DIꢀ
ꢀ
= ±ꢁꢀ
ꢁns/DIꢀ
ꢀ
= ±ꢁꢀ
10ns/DIꢀ
S
S
S
18189fb
9
LT1818/LT1819
APPLICATIONS INFORMATION
Layout and Passive Components
load, aresistorof10Ωtoꢁ0Ωmustbeconnectedbetween
the output and the capacitive load to avoid ringing or
As with all high speed amplifiers, the LT1818/LT1819
require some attention to board layout. A ground plane
is recommended and trace lengths should be minimized,
especially on the negative input lead.
oscillation (see ꢃ in Figure 1). The feedback must still be
S
taken directly from the output so that the series resistor
will isolate the capacitive load to ensure stability.
Low ESL/ESꢃ bypass capacitors should be placed directly
at the positive and negative supply (0.01μF ceramics are
recommended). For high drive current applications, adꢂ
ditional 1μF to 10μF tantalums should be added.
Input Considerations
TheinputsoftheLT1818/LT1819amplifiersareconnected
to the bases of NPN and PNP bipolar transistors in paralꢂ
lel. The base currents are of opposite polarity and provide
first order bias current cancellation. Due to variation in the
matching of NPN and PNP beta, the polarity of the input
biascurrentcanbepositiveornegative.Theoffsetcurrent,
however, does not depend on beta matching and is tightly
controlled.Therefore,theuseofbalancedsourceresistance
at each input is recommended for applications where DC
accuracy must be maximized. For example, with a 100Ω
sourceresistanceateachinput,the800nAmaximumoffset
current results in only 80μꢀ of extra offset, while without
balance the 8μA maximum input bias current could result
in an 0.8mꢀ offset condition.
The parallel combination of the feedback resistor and gain
setting resistor on the inverting input combine with the
input capacitance to form a pole that can cause peaking or
even oscillations. If feedback resistors greater than ꢁ00Ω
are used, a parallel capacitor of value
C > ꢃ • C /ꢃ
F
F
G
IN
should be used to cancel the input pole and optimize
dynamic performance (see Figure 1). For applications
where the DC noise gain is 1 and a large feedback resisꢂ
tor is used, C should be greater than or equal to C . An
F
IN
example would be an Iꢂtoꢂꢀ converter.
The inputs can withstand differential input voltages of
up to 6ꢀ without damage and without needing clamping
or series resistance for protection. This differential input
voltage generates a large internal current (up to ꢁ0mA),
which results in the high slew rate. In normal transient
closedꢂloop operation, this does not increase power disꢂ
sipation significantly because of the low duty cycle of the
transient inputs. Sustained differential inputs, however,
will result in excessive power dissipation and therefore
this device should not be used as a comparator.
In high closedꢂloop gain configurations, ꢃ >> ꢃ , no C
F
F
G
needs to be added. To optimize the bandwidth in these
applications, a capacitor, C , may be added in parallel with
G
ꢃ in order to cancel out any parasitic C capacitance.
G
F
Capacitive Loading
The LT1818/LT1819 are optimized for low distortion and
highgainbandwidthapplications. Theamplifierscandrive
a capacitive load of 20pF in a unityꢂgain configuration and
more with higher gain. When driving a larger capacitive
+
IN
+
ꢃ
S
ꢃ
G
C
–
LOAD
IN
–
C
G
ꢃ
F
C
F
18189 F01
Figure 1
18189fb
10
LT1818/LT1819
APPLICATIONS INFORMATION
Slew Rate
Example: LT1819IS8 at 8ꢁ°C, ꢀ = ±ꢁꢀ, ꢃ = 100Ω
S L
The slew rate of the LT1818/LT1819 is proportional to the
differential input voltage. Highest slew rates are therefore
seen in the lowest gain configurations. For example, a 6ꢀ
outputstepwithagainof10hasa0.6ꢀinputstep,whereas
at unity gain there is a 6ꢀ input step. The LT1818/LT1819
is tested for slew rate at a gain of –1. Lower slew rates
occur in higher gain configurations, whereas the highest
slew rate (2ꢁ00ꢀ/μs) occurs in a noninverting unityꢂgain
configuration.
P
= (10ꢀ) • (14mA) + (2.ꢁꢀ)2/100Ω = 202.ꢁmW
= 8ꢁ°C + (2 • 202.ꢁmW) • (1ꢁ0°C/W) = 146°C
DMAX
JMAX
T
Circuit Operation
The LT1818/LT1819 circuit topology is a true voltage
feedback amplifier that has the slewing behavior of a curꢂ
rent feedback amplifier. The operation of the circuit can
be understood by referring to the Simplified Schematic.
Complementary NPN and PNP emitter followers buffer
the inputs and drive an internal resistor. The input voltage
appears across the resistor, generating a current that is
mirrored into the high impedance node.
Power Dissipation
The LT1818/LT1819 combine high speed and large output
drive in small packages. It is possible to exceed the maxiꢂ
mum junction temperature specification (1ꢁ0°C) under
Complementary followers form an output stage that bufꢂ
fer the gain node from the load. The input resistor, input
stage transconductance and the capacitor on the high
impedance node determine the bandwidth. The slew rate
is determined by the current available to charge the gain
node capacitance. This current is the differential input
voltage divided by ꢃ1, so the slew rate is proportional to
the input step. Highest slew rates are therefore seen in
the lowest gain configurations.
certain conditions. Maximum junction temperature (T )
J
is calculated from the ambient temperature (T ), power
A
dissipation per amplifier (P ) and number of amplifiers
D
(n) as follows:
T = T + (n • P • θ )
J
A
D
JA
Power dissipation is composed of two parts. The first is
due to the quiescent supply current and the second is
due to onꢂchip dissipation caused by the load current.
The worstꢂcase loadꢂinduced power occurs when the
output voltage is at 1/2 of either supply voltage (or the
maximum swing if less than 1/2 the supply voltage).
Therefore P
is:
–
DMAX
+
+
P
P
=(ꢀ –ꢀ )•(I
)+(ꢀ /2)2/ꢃ or
DMAX
DMAX
SMAX
L
+
–
+
=(ꢀ –ꢀ )•(I
)+(ꢀ –ꢀ
)•(ꢀ /ꢃ )
OMAX OMAX L
SMAX
18189fb
11
LT1818/LT1819
TYPICAL APPLICATION
Single Supply Differential ADC Driver
ꢁꢀ
10μF
18pF
ꢀ
+
IN
ꢁ1.1Ω
1/2 LT1819
ꢁꢀ
–
LTC1744
14 BITS
ꢁ0Msps
(SET FOꢃ 2ꢀ
FULL SCALE)
+
–
A
A
IN
18pF
18pF
ꢁ±6Ω
PꢂP
IN
ꢁ±6Ω
4.99k
–
18189 TA0ꢁ
ꢁ1.1Ω
1/2 LT1819
ꢁꢀ
+
4.99k
0.1μF
Results Obtained with the Circuit of Figure 2 at 5MHz.
FFT Shows 81dB Overall Spurious Free Dynamic Range
0
–10
–20
–±0
–40
–ꢁ0
–60
–70
–80
–90
–100
–110
–120
0
ꢁM
10M
1ꢁM
20M
2ꢁM
FꢃEQUENCY (Hz)
18189 TA06
18189fb
12
LT1818/LT1819
SIMPLIFIED SCHEMATIC (One Amplifier)
+
ꢀ
+IN
ꢃ1
OUT
–IN
C
–
ꢀ
18189 SS
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13
LT1818/LT1819
PACKAGE DESCRIPTION
MS8 Package
8-Lead Plastic MSOP
(ꢃeference LTC DWG # 0ꢁꢂ08ꢂ1660 ꢃev F)
0.889 p 0.127
(.0±ꢁ p .00ꢁ)
ꢁ.2±
(.206)
MIN
±.20 – ±.4ꢁ
(.126 – .1±6)
±.00 p 0.102
(.118 p .004)
(NOTE ±)
0.ꢁ2
(.020ꢁ)
ꢃEF
0.6ꢁ
(.02ꢁ6)
BSC
0.42 p 0.0±8
(.016ꢁ p .001ꢁ)
TYP
8
7 6
ꢁ
ꢃECOMMENDED SOLDEꢃ PAD LAYOUT
±.00 p 0.102
(.118 p .004)
(NOTE 4)
4.90 p 0.1ꢁ2
(.19± p .006)
DETAIL “A”
0.2ꢁ4
(.010)
0o – 6o TYP
GAUGE PLANE
1
2
±
4
0.ꢁ± p 0.1ꢁ2
(.021 p .006)
1.10
(.04±)
MAX
0.86
(.0±4)
ꢃEF
DETAIL “A”
0.18
(.007)
SEATING
PLANE
0.22 – 0.±8
0.1016 p 0.0ꢁ08
(.009 – .01ꢁ)
(.004 p .002)
0.6ꢁ
(.02ꢁ6)
BSC
TYP
MSOP (MS8) 0±07 ꢃEꢀ F
NOTE:
1. DIMENSIONS IN MILLIMETEꢃ/(INCH)
2. DꢃAWING NOT TO SCALE
±. DIMENSION DOES NOT INCLUDE MOLD FLASH, PꢃOTꢃUSIONS Oꢃ GATE BUꢃꢃS.
MOLD FLASH, PꢃOTꢃUSIONS Oꢃ GATE BUꢃꢃS SHALL NOT EXCEED 0.1ꢁ2mm (.006") PEꢃ SIDE
4. DIMENSION DOES NOT INCLUDE INTEꢃLEAD FLASH Oꢃ PꢃOTꢃUSIONS.
INTEꢃLEAD FLASH Oꢃ PꢃOTꢃUSIONS SHALL NOT EXCEED 0.1ꢁ2mm (.006") PEꢃ SIDE
ꢁ. LEAD COPLANAꢃITY (BOTTOM OF LEADS AFTEꢃ FOꢃMING) SHALL BE 0.102mm (.004") MAX
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14
LT1818/LT1819
PACKAGE DESCRIPTION
S5 Package
5-Lead Plastic TSOT-23
(ꢃeference LTC DWG # 0ꢁꢂ08ꢂ16±ꢁ)
0.62
MAX
0.9ꢁ
ꢃEF
2.90 BSC
(NOTE 4)
1.22 ꢃEF
1.ꢁ0 – 1.7ꢁ
(NOTE 4)
2.80 BSC
1.4 MIN
±.8ꢁ MAX 2.62 ꢃEF
PIN ONE
ꢃECOMMENDED SOLDEꢃ PAD LAYOUT
PEꢃ IPC CALCULATOꢃ
0.±0 – 0.4ꢁ TYP
ꢁ PLCS (NOTE ±)
0.9ꢁ BSC
0.80 – 0.90
0.20 BSC
DATUM ‘A’
0.01 – 0.10
1.00 MAX
0.±0 – 0.ꢁ0 ꢃEF
1.90 BSC
0.09 – 0.20
(NOTE ±)
NOTE:
Sꢁ TSOTꢂ2± 0±02 ꢃEꢀ B
1. DIMENSIONS AꢃE IN MILLIMETEꢃS
2. DꢃAWING NOT TO SCALE
±. DIMENSIONS AꢃE INCLUSIꢀE OF PLATING
4. DIMENSIONS AꢃE EXCLUSIꢀE OF MOLD FLASH AND METAL BUꢃꢃ
ꢁ. MOLD FLASH SHALL NOT EXCEED 0.2ꢁ4mm
6. JEDEC PACKAGE ꢃEFEꢃENCE IS MOꢂ19±
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15
LT1818/LT1819
PACKAGE DESCRIPTION
S8 Package
8-Lead Plastic Small Outline (Narrow .150 Inch)
(ꢃeference LTC DWG # 0ꢁꢂ08ꢂ1610)
.189 – .197
(4.801 – ꢁ.004)
.04ꢁ p.00ꢁ
NOTE ±
.0ꢁ0 BSC
7
ꢁ
8
6
.24ꢁ
MIN
.160 p.00ꢁ
.1ꢁ0 – .1ꢁ7
(±.810 – ±.988)
NOTE ±
.228 – .244
(ꢁ.791 – 6.197)
.0±0 p.00ꢁ
TYP
1
±
4
2
ꢃECOMMENDED SOLDEꢃ PAD LAYOUT
.010 – .020
(0.2ꢁ4 – 0.ꢁ08)
s 4ꢁo
.0ꢁ± – .069
(1.±46 – 1.7ꢁ2)
.004 – .010
(0.101 – 0.2ꢁ4)
.008 – .010
(0.20± – 0.2ꢁ4)
0o– 8o TYP
.016 – .0ꢁ0
(0.406 – 1.270)
.0ꢁ0
(1.270)
BSC
.014 – .019
(0.±ꢁꢁ – 0.48±)
TYP
NOTE:
INCHES
1. DIMENSIONS IN
(MILLIMETEꢃS)
2. DꢃAWING NOT TO SCALE
±. THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH Oꢃ PꢃOTꢃUSIONS.
MOLD FLASH Oꢃ PꢃOTꢃUSIONS SHALL NOT EXCEED .006" (0.1ꢁmm)
SO8 0±0±
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16
LT1818/LT1819
REVISION HISTORY (Revision history begins at Rev B)
REV
DATE
DESCRIPTION
PAGE NUMBER
B
ꢁ/10
Updated Order Information Section
2
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Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no representaꢂ
tion that the interconnection of its circuits as described herein will not infringe on existing patent rights.
17
LT1818/LT1819
TYPICAL APPLICATION
80MHz, 20dB Gain Block
ꢀ
+
IN
1/2 LT1819
+
ꢀ
1/2 LT1819
–
OUT
–
4±2Ω
4±2Ω
200Ω
200Ω
–±dB BANDWIDTH: 80MHz
18189 TA0±
20dB Gain Block Frequency Response
Large-Signal Transient Response
2ꢁ
20
1ꢁ
10
ꢁ
1ꢀ/DIꢀ
0
–ꢁ
–10
ꢀ
= ±ꢁꢀ
= 2ꢁ°C
S
A
T
18189 TA07
10ns/DIꢀ
100k
1M
10M
100M
FꢃEQUENCY (Hz)
18189 TA04
RELATED PARTS
PART NUMBER
DESCRIPTION
COMMENTS
LT1±9ꢁ/LT1±96/LT1±97
LT1806/LT1807
Single/Dual/Quad 400MHz Current Feedback Amplifiers
Single/Dual ±2ꢁMHz, 140ꢀ/μs ꢃailꢂtoꢂꢃail I/O Op Amps
Single/Dual 180MHz, ±ꢁ0ꢀ/μs ꢃailꢂtoꢂꢃail I/O Op Amps
Single/Dual/Quad 100MHz, 7ꢁ0ꢀ/μs Op Amps
4.6mA Supply Current
Low Noise: ±.ꢁnꢀ/√Hz
LT1809/LT1810
Low Distortion: –90dBc at ꢁMHz
Low Power: ±.6mA Max at ±ꢁꢀ
Programmable Supply Current
1.9nꢀ/√Hz Noise, ±mA Max
LT1812/LT181±/LT1814
LT181ꢁ/LT1816/LT1817
LT620±/LT6204
Single/Dual/Quad 220MHz, 1ꢁ00ꢀ/μs Op Amps
Dual/Quad 100MHz, ꢃailꢂtoꢂꢃail I/O Op Amps
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LT 0510 REV B • PRINTED IN USA
LinearTechnology Corporation
16±0 McCarthy Blvd., Milpitas, CA 9ꢁ0±ꢁꢂ7417
18
●
●
© LINEAR TECHNOLOGY CORPORATION 2002
(408) 4±2ꢂ1900 FAX: (408) 4±4ꢂ0ꢁ07 www.linear.com
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