LT1817_15 [Linear]
Single/Dual/Quad 220MHz, 1500V/s Operational Amplifiers with Programmable Supply Current;
| 型号： | LT1817_15 |
| 厂家： | 
Linear |
| 描述： | Single/Dual/Quad 220MHz, 1500V/s Operational Amplifiers with Programmable Supply Current |
| 文件： | 总20页 (文件大小：548K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
LT1815/LT1816/LT1817
Single/Dual/Quad 220MHz,
1500V/µs Operational Amplifiers
with Programmable Supply Current
DESCRIPTION
FEATURES
The LT®1815/LT1816/LT1817 are low power, high speed,
very high slew rate operational amplifiers with excellent
DC performance. The LT1815/LT1816/LT1817 feature
higher bandwidth and slew rate, much lower input offset
voltage and lower noise and distortion than other devices
with comparable supply current. A programmable current
option (LT1815 and LT1816A) allows power savings and
flexibilitybyoperatingatreducedsupplycurrentandspeed.
Thecircuittopologyisavoltagefeedbackamplifierwiththe
n
220MHz Gain-Bandwidth Product
n
1500V/μs Slew Rate
n
6.5mA Supply Current per Amplifier
n
Programmable Current Option
n
6nꢀ/√Hz Input Noise ꢀoltage
n
Unity-Gain Stable
n
1.5mꢀ Maximum Input Offset ꢀoltage
n
8μA Maximum Input Bias Current
n
800nA Maximum Input Offset Current
n
50mA Minimum Output Current, ꢀ
= ±±ꢀ
slewing characteristics of a current feedback amplifier.
OUT
n
±±.5ꢀ Minimum Input CMꢁ, ꢀ = ±5ꢀ
S
The output drives a 100Ω load to ±±.8ꢀ with ±5ꢀ supplies.
On a single 5ꢀ supply, the output swings from 1ꢀ to 4ꢀ
with a 100Ω load connected to 2.5ꢀ. Harmonic distortion
n
n
n
n
Specified at ±5ꢀ, Single 5ꢀ Supplies
Operating Temperature ꢁange: –40°C to 85°C
Space Saving MSOP and SSOP Packages
Low Profile (1mm) SOT-2± (ThinSOT™) and Leadless
DFN Packages
is –70dB for a 5MHz, 2ꢀ output driving a 100Ω load
P-P
in a gain of –1.
The LT1815/LT1816/LT1817 are manufactured on Linear
Technology’sadvancedlowvoltagecomplementarybipolar
process and are available in a variety of TSOT-2±, SO,
MSOP, SSOP and leadless DFN packages.
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.
APPLICATIONS
n
Wideband Amplifiers
n
Buffers
n
Active Filters
n
ꢀideo and ꢁF Amplification
n
Communication ꢁeceivers
n
Cable Drivers
n
Data Acquisition Systems
Distortion vs Frequency
TYPICAL APPLICATION
–±0
A
ꢀ
ꢀ
= 2
ꢀ
S
O
Programmable Current Amplifier Switches
= ±5ꢀ
P-P
= 100Ω
–40
–50
–60
–70
–80
–90
–100
LOW POWEꢁ MODE
from Low Power Mode to Full Speed Mode
= 2ꢀ
ꢁ
L
5ꢀ
500Ω
±ꢁD HAꢁMONIC
2ND HAꢁMONIC
500Ω
–
ꢀ
LT1815
OUT
ꢀ
IN
2ND HAꢁMONIC
±ꢁD HAꢁMONIC
100Ω
+
I
SET
FULL SPEED MODE
HS/LP
40k
100k
10M
1M
FꢁEQUENCY (Hz)
–5ꢀ
181567 TA01
181567 TA02
181567fb
1
LT1815/LT1816/LT1817
ABSOLUTE MAXIMUM RATINGS
(Note 1)
+
–
Total Supply ꢀoltage (ꢀ to ꢀ )............................. 12.6ꢀ
Differential Input ꢀoltage
Specified Temperature ꢁange (Note 8) ....–40°C to 85°C
Maximum Junction Temperature ......................... 150°C
(DD Package).................................................... 125°C
Storage Temperature ꢁange .................. –65°C to 150°C
(DD Package)..................................... –65°C to 125°C
Lead Temperature (Soldering, 10 sec)...................±00°C
(Transient Only, Note 2) ........................................... ±6ꢀ
Input ꢀoltage ........................................................... ±ꢀ
S
Output Short-Circuit Duration (Note ±) .......... Indefinite
Operating Temperature ꢁange .................–40°C to 85°C
PIN CONFIGURATION
LT1815
LT1815
LT1815
TOP ꢀIEW
TOP ꢀIEW
TOP ꢀIEW
NC
–IN
+IN
1
2
±
4
8
7
6
5
NC
+
+
OUT 1
–
5 ꢀ
OUT 1
–
6 ꢀ
+
ꢀ
–
+
ꢀ
2
ꢀ
2
5 I
SET
OUT
NC
+
+
–
–
+IN±
4 –IN
+IN ±
4 –IN
–
ꢀ
S5 PACKAGE
5-LEAD PLASTIC TSOT-2±
S6 PACKAGE
6-LEAD PLASTIC TSOT-2±
S8 PACKAGE
8-LEAD PLASTIC SO
T
= 150°C, θ = 250°C/W (NOTE 9)
T
= 150°C, θ = 2±0°C/W (NOTE 9)
JMAX
JA
JMAX
JA
T
JMAX
= 150°C, θ = 150°C/W (NOTE 9)
JA
LT1816
LT1816
LT1816
TOP ꢀIEW
TOP ꢀIEW
+
+
TOP ꢀIEW
+
OUT A
–IN A
+IN A
1
2
±
4
8
7
6
5
ꢀ
OUT A
–IN A
+IN A
1
2
±
4
5
10 ꢀ
OUTA 1
–INA 2
8 ꢀ
OUT B
–IN B
+IN B
9
8
7
6
OUT B
9
A
A
7 OUTB
6 –INB
5 +INB
–IN B
+IN B
A
+INA
±
4
B
–
ꢀ
B
B
–
–
ꢀ
–
ꢀ
ꢀ
I
SET
MS8 PACKAGE
8-LEAD PLASTIC MSOP
MS PACKAGE
10-LEAD PLASTIC MSOP
DD PACKAGE
8-LEAD (±mm × ±mm) PLASTIC DFN
= 125°C, θ = 160°C/W (NOTE 9)
T
= 150°C, θ = 250°C/W (NOTE 9)
JMAX
JA
T
JMAX
= 150°C, θ = 250°C/W (NOTE 9)
JA
T
JMAX
JA
–
UNDEꢁSIDE METAL INTEꢁNALLY CONNECTED TO ꢀ
LT1816
LT1817
LT1817
TOP ꢀIEW
TOP ꢀIEW
OUT A
–IN A
+IN A
1
2
±
4
5
6
7
8
16
15
14
1±
12
11
10
9
OUT D
–IN D
+IN D
OUT A
–IN A
+IN A
1
2
±
4
5
6
7
14
1±
12
11
10
8
OUT D
–IN D
+IN D
TOP ꢀIEW
–
+
–
+
A
D
–
+
–
+
+
OUT A
–IN A
+IN A
1
2
±
4
8
7
6
5
V
A
D
+
–
OUT B
–IN B
+IN B
V
V
+
–
ꢀ
A
ꢀ
+IN B
–IN B
OUT B
NC
+IN C
–IN C
OUT C
NC
+
–
+
+IN B
–IN B
B
C
+IN C
–IN C
OUT C
+
+
–
B
–
–
B
C
V
–
S8 PACKAGE
8-LEAD PLASTIC SO
= 150°C, θ = 150°C/W (NOTE 9)
8
OUT B
T
S PACKAGE
14-LEAD PLASTIC SO
= 150°C, θ = 100°C/W
JMAX
JA
GN PACKAGE
16-LEAD PLASTIC SSOP NAꢁꢁOW
= 150°C, θ = 1±5°C/W
T
JMAX
JA
T
JMAX
JA
181567fb
2
LT1815/LT1816/LT1817
ORDER INFORMATION
SPECIFIED
LEAD FREE FINISH
LT1815CS5#PBF
LT1815IS5#PBF
LT1815CS6#PBF
LT1815IS6#PBF
LT1815CS8#PBF
LT1815IS8#PBF
LT1816CDD#PBF
LT1816IDD#PBF
LT1816CMS8#PBF
LT1816IMS8#PBF
LT1816ACMS#PBF
LT1816AIMS#PBF
LT1816CS8#PBF
LT1816IS8#PBF
LT1817CGN#PBF
LT1817IGN#PBF
LT1817CS#PBF
LT1817IS#PBF
TAPE AND REEL
PART MARKING*
LTUP
PACKAGE DESCRIPTION
TEMPERATURE RANGE
LT1815CS5#TꢁPBF
LT1815IS5#TꢁPBF
LT1815CS6#TꢁPBF
LT1815IS6#TꢁPBF
LT1815CS8#TꢁPBF
LT1815IS8#TꢁPBF
LT1816CDD#TꢁPBF
LT1816IDD#TꢁPBF
LT1816CMS8#TꢁPBF
LT1816IMS8#TꢁPBF
LT1816ACMS#TꢁPBF
LT1816AIMS#TꢁPBF
LT1816CS8#TꢁPBF
LT1816IS8#TꢁPBF
LT1817CGN#TꢁPBF
LT1817IGN#TꢁPBF
LT1817CS#TꢁPBF
LT1817IS#TꢁPBF
5-Lead Plastic TSOT-2±
5-Lead Plastic TSOT-2±
6-Lead Plastic TSOT-2±
6-Lead Plastic TSOT-2±
8-Lead Plastic SO
0°C to 70°C
LTꢀC
–40°C to 85°C
0°C to 70°C
LTUL
LTꢀD
–40°C to 85°C
0°C to 70°C
1815
1815I
8-Lead Plastic SO
–40°C to 85°C
0°C to 70°C
LAAꢁ
8-Lead (±mm × ±mm) Plastic DFN
8-Lead (±mm × ±mm) Plastic DFN
8-Lead Plastic MSOP
8-Lead Plastic MSOP
10-Lead Plastic MSOP
10-Lead Plastic MSOP
8-Lead Plastic SO
LAAꢁ
–40°C to 150°C
0°C to 70°C
LTWA
LTNQ
–40°C to 85°C
0°C to 70°C
LTYA
LTXX
–40°C to 85°C
0°C to 70°C
1816
1816I
8-Lead Plastic SO
–40°C to 85°C
0°C to 70°C
1817
16-Lead Plastic SSOP
16-Lead Plastic SSOP
14-Lead Plastic SO
1817I
–40°C to 85°C
0°C to 70°C
LT1817CS
LT1817IS
14-Lead Plastic SO
–40°C to 85°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 non-standard 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/
ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C (Note 8). VS = 5V, VCM = 0V, unless otherwise noted. For the
programmable current option (LT1815S6 or LT1816A), the ISET pin must be connected to V– through 75Ω or less, unless
otherwise noted.
SYMBOL PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
ꢀ
Input Offset ꢀoltage
(Note 4)
A
T = –40°C to 85°C
A
0.2
1.5
2.0
±.0
mꢀ
mꢀ
mꢀ
OS
l
l
T = 0°C to 70°C
–
Input Offset ꢀoltage
(Low Power Mode) (Note 10)
LT1815S6/LT1816A, 40kΩ Between I and ꢀ
2
7
9
10
mꢀ
mꢀ
mꢀ
SET
l
l
T = 0°C to 70°C
A
T = –40°C to 85°C
A
l
l
Δꢀ
Input Offset ꢀoltage Drift
Input Offset Current
T = 0°C to 70°C (Note 7)
10
10
15
±0
μꢀ/°C
μꢀ/°C
OS
A
ΔT
T = –40°C to 85°C (Note 7)
A
I
OS
60
800
1000
1200
nA
nA
nA
l
l
T = 0°C to 70°C
A
T = –40°C to 85°C
A
I
B
Input Bias Current
–2
±8
±10
±12
μA
μA
μA
l
l
T = 0°C to 70°C
A
A
T = –40°C to 85°C
181567fb
3
LT1815/LT1816/LT1817
ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C (Note 8). VS = 5V, VCM = 0V, unless otherwise noted. For the
programmable current option (LT1815S6 or LT1816A), the ISET pin must be connected to V– through 75Ω or less, unless
otherwise noted.
SYMBOL PARAMETER
CONDITIONS
f = 10kHz
MIN
TYP
6
MAX
UNITS
nꢀ/√Hz
pA/√Hz
e
n
Input Noise ꢀoltage Density
Input Noise Current Density
Input ꢁesistance
i
n
f = 10kHz
1.±
ꢁ
IN
ꢀ
= ±±.5ꢀ
CM
1.5
5
750
MΩ
kΩ
Differential
C
ꢀ
Input Capacitance
2
pF
IN
Input ꢀoltage ꢁange
Guaranteed by CMꢁꢁ
A
±±.5
±±.5
±4.2
ꢀ
ꢀ
CM
l
T = –40°C to 85°C
CMꢁꢁ
Common Mode ꢁejection ꢁatio
ꢀ
= ±±.5ꢀ
75
7±
72
85
dB
dB
dB
CM
A
A
l
l
T = 0°C to 70°C
T = –40°C to 85°C
Minimum Supply ꢀoltage
Guaranteed by PSꢁꢁ
T = –40°C to 85°C
±1.25
97
±2
±2
ꢀ
ꢀ
l
A
PSꢁꢁ
Power Supply ꢁejection ꢁatio
ꢀ = ±2ꢀ to ±5.5ꢀ
78
76
75
dB
dB
dB
S
l
l
T = 0°C to 70°C
A
A
T = –40°C to 85°C
Channel Separation
ꢀ
ꢀ
ꢀ
= ±±ꢀ, ꢁ = 100Ω, LT1816/LT1817
82
81
80
100
±
dB
dB
dB
OUT
A
A
L
l
l
T = 0°C to 70°C
T = –40°C to 85°C
A
ꢀOL
Large-Signal ꢀoltage Gain
= ±±ꢀ, ꢁ = 500Ω
1.5
1.0
0.8
ꢀ/mꢀ
ꢀ/mꢀ
ꢀ/mꢀ
OUT
A
A
L
l
l
T = 0°C to 70°C
T = –40°C to 85°C
= ±±ꢀ, ꢁ = 100Ω
0.7
0.5
0.4
2.5
ꢀ/mꢀ
ꢀ/mꢀ
ꢀ/mꢀ
OUT
A
A
L
l
l
T = 0°C to 70°C
T = –40°C to 85°C
ꢀ
Maximum Output Swing
Maximum Output Current
ꢁ = 500Ω, ±0mꢀ Overdrive
±±.8
±±.7
±±.6
±4.1
±±.8
±80
ꢀ
ꢀ
ꢀ
OUT
L
l
l
T = 0°C to 70°C
A
T = –40°C to 85°C
A
ꢁ = 100Ω, ±0mꢀ Overdrive
±±.50
±±.25
±±.15
ꢀ
ꢀ
ꢀ
L
l
l
T = 0°C to 70°C
A
A
T = –40°C to 85°C
I
ꢀ
= ±±ꢀ, ±0mꢀ Overdrive
OUT
±50
±45
±40
mA
mA
mA
OUT
l
l
T = 0°C to 70°C
A
T = –40°C to 85°C
A
–
Maximum Output Current
(Low Power Mode) (Note 10)
LT1815S6/LT1816A; 40kΩ Between I and ꢀ ;
SET
ꢀ
= ±±ꢀ, ±0mꢀ Overdrive
±50
±40
±±0
±75
±200
1500
80
mA
mA
mA
OUT
l
l
T = 0°C to 70°C
A
T = –40°C to 85°C
A
I
Output Short-Circuit Current
Slew ꢁate
ꢀ
= 0ꢀ, 1ꢀ Overdrive (Note ±)
OUT
±100
±90
±70
mA
mA
mA
SC
l
l
T = 0°C to 70°C
A
T = –40°C to 85°C
A
Sꢁ
A = –1 (Note 5)
ꢀ
900
750
600
ꢀ/μs
ꢀ/μs
ꢀ/μs
l
l
T = 0°C to 70°C
A
T = –40°C to 85°C
A
FPBW
Full-Power Bandwidth
6ꢀ (Note 6)
P-P
MHz
181567fb
4
LT1815/LT1816/LT1817
ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C (Note 8). VS = 5V, VCM = 0V, unless otherwise noted. For the
programmable current option (LT1815S6 or LT1816A), the ISET pin must be connected to V– through 75Ω or less, unless
otherwise noted.
SYMBOL PARAMETER
GBW Gain-Bandwidth Product
CONDITIONS
MIN
TYP
MAX
UNITS
f = 200kHz, ꢁ = 500Ω, LT1815
150
140
1±0
220
MHz
MHz
MHz
L
l
l
T = 0°C to 70°C
A
T = –40°C to 85°C
A
f = 200kHz, ꢁ = 500Ω, LT1816/LT1817
140
1±0
120
220
55
MHz
MHz
MHz
L
l
l
T = 0°C to 70°C
A
T = –40°C to 85°C
A
–
Gain-Bandwidth Product
(Low Power Mode) (Note 10)
LT1815S6/LT1816A; 40kΩ Between I and ꢀ ;
SET
f = 200kHz, ꢁ = 500Ω
±5
±0
25
MHz
MHz
MHz
L
l
l
T = 0°C to 70°C
A
T = –40°C to 85°C
A
–±dB BW –±dB Bandwidth
A = 1, ꢁ = 500Ω
±50
1
MHz
ns
ꢀ
L
t , t
ꢁise Time, Fall Time
Propagation Delay
Overshoot
A = 1, 10% to 90%, 0.1ꢀ, ꢁ = 100Ω
ꢀ L
r
f
t
A = 1, 50% to 50%, 0.1ꢀ, ꢁ = 100Ω
ꢀ
1.4
25
ns
PD
L
OS
A = 1, 0.1ꢀ; ꢁ = 100Ω
%
ꢀ
L
t
Settling Time
A = –1, 0.1%, 5ꢀ
ꢀ
15
ns
S
THD
dG
Total Harmonic Distortion
Differential Gain
Differential Phase
Output ꢁesistance
Supply Current
A = 2, f = 5MHz, ꢀ
= 2ꢀ , ꢁ = 500Ω
–70
0.08
0.04
0.20
6.5
dB
%
ꢀ
OUT
P-P
L
A = 2, ꢀ
= 2ꢀ , ꢁ = 150Ω
P-P L
ꢀ
OUT
OUT
dP
A = 2, ꢀ
ꢀ
= 2ꢀ , ꢁ = 150Ω
Deg
Ω
P-P
L
ꢁ
OUT
A = 1, f = 1MHz
ꢀ
I
S
LT1815
7
9
10
mA
mA
mA
l
l
T = 0°C to 70°C
A
T = –40°C to 85°C
A
LT1816/LT1817, per Amplifier
T = 0°C to 70°C
A
6.5
7.8
10.5
11.5
mA
mA
mA
l
l
A
T = –40°C to 85°C
–
Supply Current (Low Power Mode)
(Note 10)
LT1815S6/LT1816A, 40kΩ Between I and ꢀ ,
SET
per Amplifier
1
1.5
1.8
2.0
mA
mA
mA
l
l
T = 0°C to 70°C
A
T = –40°C to 85°C
A
I
I
Pin Current (Note 10)
SET
LT1815S6/LT1816A
–150
–175
–200
–100
μA
μA
μA
SET
l
l
T = 0°C to 70°C
A
T = –40°C to 85°C
A
181567fb
5
LT1815/LT1816/LT1817
ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating temp-
erature range, otherwise specifications are at TA = 25°C (Note 8). VS = 5V, OV; VCM = 2.5V, RL to 2.5V, unless otherwise noted. For the
programmable current option (LT1815S6 or LT1816A), the ISET pin must be connected to V– through 75Ω or less, unless otherwise noted.
SYMBOL PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
ꢀ
Input Offset ꢀoltage
(Note 4)
0.4
2.0
2.5
±.5
mꢀ
mꢀ
mꢀ
OS
l
l
T = 0°C to 70°C
A
T = –40°C to 85°C
A
–
Input Offset ꢀoltage
(Low Power Mode) (Note 10)
LT1815S6/LT1816A, 40kΩ Between I and ꢀ
2
7
9
10
mꢀ
mꢀ
mꢀ
SET
l
l
T = 0°C to 70°C
A
T = –40°C to 85°C
A
l
l
Δꢀ
Input Offset ꢀoltage Drift
Input Offset Current
T = 0°C to 70°C (Note 7)
10
10
15
±0
μꢀ/°C
μꢀ/°C
OS
A
ΔT
T = –40°C to 85°C (Note 7)
A
I
60
800
1000
1200
nA
nA
nA
OS
l
l
T = 0°C to 70°C
A
T = –40°C to 85°C
A
I
B
Input Bias Current
–2.4
±8
±10
±12
μA
μA
μA
l
l
T = 0°C to 70°C
A
A
T = –40°C to 85°C
e
Input Noise ꢀoltage Density
Input Noise Current Density
Input ꢁesistance
f = 10kHz
f = 10kHz
6
nꢀ/√Hz
pA/√Hz
n
i
1.±
n
ꢁ
ꢀ
= 1.5ꢀ to ±.5ꢀ
CM
1.5
5
750
MΩ
kΩ
IN
Differential
C
ꢀ
Input Capacitance
2
pF
IN
Input ꢀoltage ꢁange (High)
Guaranteed by CMꢁꢁ
±.5
±.5
4.1
ꢀ
ꢀ
CM
l
l
T = –40°C to 85°C
A
Input ꢀoltage ꢁange (Low)
Guaranteed by CMꢁꢁ
0.9
82
1.5
1.5
ꢀ
ꢀ
T = –40°C to 85°C
A
CMꢁꢁ
Common Mode ꢁejection ꢁatio
ꢀ
ꢀ
= 1.5ꢀ to ±.5ꢀ
7±
71
70
dB
dB
dB
CM
A
A
l
l
T = 0°C to 70°C
T = –40°C to 85°C
Channel Separation
= 1.5ꢀ to ±.5ꢀ, ꢁ = 100Ω, LT1816/LT1817
81
80
79
100
dB
dB
dB
OUT
L
l
l
T = 0°C to 70°C
A
A
T = –40°C to 85°C
Minimum Supply ꢀoltage
Large-Signal ꢀoltage Gain
Guaranteed by PSꢁꢁ
T = –40°C to 85°C
2.5
2
4
4
ꢀ
ꢀ
l
A
A
ꢀOL
ꢀ
OUT
ꢀ
OUT
ꢀ
= 1.5ꢀ to ±.5ꢀ, ꢁ = 500Ω
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 85°C
ꢀ
= 1.5ꢀ to ±.5ꢀ, ꢁ = 100Ω
0.7
0.5
0.4
1.5
4.2
4
ꢀ/mꢀ
ꢀ/mꢀ
ꢀ/mꢀ
OUT
A
A
L
l
l
T = 0°C to 70°C
T = –40°C to 85°C
Maximum Output Swing (High)
Maximum Output Swing (Low)
ꢁ = 500Ω, ±0mꢀ Overdrive
±.9
±.8
±.7
ꢀ
ꢀ
ꢀ
L
l
l
T = 0°C to 70°C
A
A
T = –40°C to 85°C
ꢁ = 100Ω, ±0mꢀ Overdrive
±.7
±.6
±.5
ꢀ
ꢀ
ꢀ
L
l
l
T = 0°C to 70°C
A
A
T = –40°C to 85°C
ꢁ = 500Ω, ±0mꢀ Overdrive
0.8
1
1.1
1.2
1.±
ꢀ
ꢀ
ꢀ
L
l
l
T = 0°C to 70°C
A
A
T = –40°C to 85°C
ꢁ = 100Ω, ±0mꢀ Overdrive
1.±
1.4
1.5
ꢀ
ꢀ
ꢀ
L
l
l
T = 0°C to 70°C
A
A
T = –40°C to 85°C
181567fb
6
LT1815/LT1816/LT1817
ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating temp-
erature range, otherwise specifications are at TA = 25°C (Note 8). VS = 5V, OV; VCM = 2.5V, RL to 2.5V, unless otherwise noted. For the
programmable current option (LT1815S6 or LT1816A), the ISET pin must be connected to V– through 75Ω or less, unless otherwise noted.
SYMBOL PARAMETER
CONDITIONS
= 1.5ꢀ or ±.5ꢀ, ±0mꢀ Overdrive
MIN
TYP
MAX
UNITS
I
Maximum Output Current
ꢀ
±±0
±25
±20
±50
mA
mA
mA
OUT
OUT
l
l
T = 0°C to 70°C
A
T = –40°C to 85°C
A
–
Maximum Output Current
(Low Power Mode) (Note 10)
LT1815S6/LT1816A; 40kΩ Between I and ꢀ ;
SET
ꢀ
= 1.5ꢀ or ±.5ꢀ, ±0mꢀ Overdrive
±±0
±25
±20
±50
±140
750
mA
mA
mA
OUT
A
A
l
l
T = 0°C to 70°C
T = –40°C to 85°C
I
Output Short-Circuit Current
Slew ꢁate
ꢀ
= 2.5ꢀ, 1ꢀ Overdrive (Note ±)
OUT
±80
±70
±50
mA
mA
mA
SC
l
l
T = 0°C to 70°C
A
T = –40°C to 85°C
A
Sꢁ
A = –1 (Note 5)
450
±75
±00
ꢀ/μs
ꢀ/μs
ꢀ/μs
ꢀ
l
l
T = 0°C to 70°C
A
A
T = –40°C to 85°C
FPBW
GBW
Full-Power Bandwidth
2ꢀ (Note 6)
120
200
MHz
P-P
Gain-Bandwidth Product
f = 200kHz, ꢁ = 500Ω, LT1815
140
1±0
120
MHz
MHz
MHz
L
l
l
T = 0°C to 70°C
A
T = –40°C to 85°C
A
f = 200kHz, ꢁ = 500Ω, LT1816/LT1817
1±0
110
100
200
50
MHz
MHz
MHz
L
l
l
T = 0°C to 70°C
A
T = –40°C to 85°C
A
–
Gain-Bandwidth Product
(Low Power Mode) (Note 10)
LT1815S6/LT1816A; 40kΩ Between I and ꢀ ;
SET
f = 200kHz, ꢁ = 500Ω
±0
25
20
MHz
MHz
MHz
L
l
l
T = 0°C to 70°C
A
T = –40°C to 85°C
A
–±dB BW –±dB Bandwidth
A = 1, ꢁ = 500Ω
±00
1.2
MHz
ns
ꢀ
L
t , t
ꢁise Time, Fall Time
Propagation Delay
Overshoot
A = 1, 10% to 90%, 0.1ꢀ, ꢁ = 100Ω
ꢀ L
r
f
t
A = 1, 50% to 50%, 0.1ꢀ, ꢁ = 100Ω
ꢀ
1.5
ns
PD
L
OS
A = 1, 0.1ꢀ; ꢁ = 100Ω
25
%
ꢀ
L
t
Settling Time
A = –1, 0.1%, 2ꢀ
ꢀ
15
ns
S
THD
dG
Total Harmonic Distortion
Differential Gain
Differential Phase
Output ꢁesistance
Supply Current
A = 2, f = 5MHz, ꢀ
= 2ꢀ , ꢁ = 500Ω
–65
0.08
0.1±
0.24
6.±
dB
%
ꢀ
OUT
P-P
L
A = 2, ꢀ
= 2ꢀ , ꢁ = 150Ω
P-P L
ꢀ
OUT
OUT
dP
A = 2, ꢀ
ꢀ
= 2ꢀ , ꢁ = 150Ω
Deg
Ω
P-P
L
ꢁ
OUT
A = 1, f = 1MHz
ꢀ
I
S
LT1815
8
10
11
mA
mA
mA
l
l
T = 0°C to 70°C
A
T = –40°C to 85°C
A
LT1816/LT1817, per Amplifier
T = 0°C to 70°C
6.±
0.9
9
mA
mA
mA
l
l
12
1±
A
T = –40°C to 85°C
A
–
Supply Current (Low Power Mode) LT1815S6/LT1816A, 40kΩ Between I and ꢀ , per Amplifier
1.5
1.8
2.0
mA
mA
mA
SET
l
l
(Note 10)
T = 0°C to 70°C
A
T = –40°C to 85°C
A
I
I
Pin Current (Note 10)
LT1815S6/LT1816A
–150
–175
–200
–100
μA
μA
μA
SET
SET
l
l
T = 0°C to 70°C
A
T = –40°C to 85°C
A
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.
Note 1: Stresses beyond those listed under Absolute Maximum ꢁatings
may cause permanent damage to the device. Exposure to any Absolute
Maximum ꢁating condition for extended periods may affect device
reliability and lifetime.
181567fb
7
LT1815/LT1816/LT1817
ELECTRICAL CHARACTERISTICS
Note 3: A heat sink may be required to keep the junction temperature
expected to meet the extended temperature limits, but are not tested at
–40°C and 85°C. The LT1815I/LT1816I/LT1817I are guaranteed to meet the
extended temperature limits.
below absolute maximum when the output is shorted indefinitely.
Note 4: Input offset voltage is pulse tested and is exclusive of warm-up
drift.
Note 9: Thermal resistance (θ ) varies with the amount of PC board
JA
metal connected to the package. The specified values are for short
traces connected to the leads. If desired, the thermal resistance can be
substantially reduced by connecting Pin 2 of the TSOT-2±, Pin 4 of the
SO-8 and MS8, Pin 5 of the MS10 or the underside metal of the DD
package to a large metal area.
Note 5: Slew rate is measured between ±2ꢀ at the output with ±±ꢀ input
for ±5ꢀ supplies and 2ꢀ at the output with a ±ꢀ input for single 5ꢀ
supplies.
Note 6: Full-power bandwidth is calculated from the slew rate:
FPBW = Sꢁ/2πꢀ
Note 7: This parameter is not 100% tested.
Note 8: The LT1815C/LT1816C/LT1817C are guaranteed to meet specified
performance from 0°C to 70°C and are designed, characterized and
P-P
P-P
P
–
Note 10: A resistor of 40k or less is required between the I and ꢀ pins
SET
of the LT1815S6 and the LT1816AMS. See the Applications Information
section for information on selecting a suitable resistor.
TYPICAL PERFORMANCE CHARACTERISTICS
Input Common Mode Range
Input Bias Current
Supply Current vs Temperature
vs Supply Voltage
vs Common Mode Voltage
+
12
10
8
0
–1
–2
–±
–4
ꢀ
T
= 25°C
= ±5ꢀ
PEꢁ AMPLIFIEꢁ
T = 25°C
A
A
S
–0.5
–1.0
–1.5
–2.0
ꢀ
Δꢀ < 1mꢀ
OS
ꢀ
= ±5ꢀ
S
ꢀ
= ±2.5ꢀ
S
6
2.0
1.5
1.0
0.5
4
2
–
0
ꢀ
0
2.5
–50 –25
0
25
50
75 100 125
–5.0
–2.5
5.0
0
2
±
4
5
6
7
1
TEMPEꢁATUꢁE (°C)
INPUT COMMON MODE ꢀOLTAGE (ꢀ)
SUPPLY ꢀOLTAGE (±ꢀ)
181567 G01
181567 G02
181567 G0±
Input Bias Current vs Temperature
Open-Loop Gain vs Resistive Load
Input Noise Spectral Density
75.0
72.5
70.0
67.5
65.0
62.5
60.0
0
100
10
1
10
T
= 25°C
A
T
= 25°C
= ±5ꢀ
= 101
= 10k
A
S
ꢀ
ꢀ
A
–0.4
ꢁ
S
–0.8
–1.2
–1.6
–2.0
–2.4
i
n
ꢀ
ꢀ
= ±5ꢀ
S
S
1
e
n
= ±2.5ꢀ
ꢀ
= ±5ꢀ
S
ꢀ
= ±2.5ꢀ
S
–2.8
0.1
100k
100
1k
LOAD ꢁESISTANCE (Ω)
10k
50
100 125
–50 –25
0
25
75
10
100
1k
FꢁEQUENCY (Hz)
10k
TEMPEꢁATUꢁE (°C)
181567 G06
181567 G05
181567 G04
181567fb
8
LT1815/LT1816/LT1817
TYPICAL PERFORMANCE CHARACTERISTICS
Output Voltage Swing
Output Voltage Swing
Open-Loop Gain vs Temperature
vs Supply Voltage
vs Load Current
+
5
75.0
72.5
70.0
67.5
ꢀ
T
= 25°C
= ±5ꢀ
ꢀ
ꢀ
= ±5ꢀ
= ±±ꢀ
T
= 25°C
OS
A
S
S
O
A
–0.5
–1.0
–1.5
–2.0
ꢀ
Δꢀ = ±0mꢀ
ꢁ
= 500Ω
= 100Ω
L
Δꢀ = ±0mꢀ
OS
4
±
2
ꢁ
L
ꢁ
ꢁ
= 500Ω
= 100Ω
L
L
SOUꢁCE
–2
–±
–4
–5
SINK
2.0
1.5
1.0
0.5
65.0
62.5
60.0
ꢁ
= 100Ω
L
ꢁ
= 500Ω
L
–
ꢀ
50
100 125
–50 –25
0
25
75
–120 –80
0
40
80
120
–40
0
2
±
4
5
6
7
1
TEMPEꢁATUꢁE (°C)
SUPPLY ꢀOLTAGE (±ꢀ)
OUTPUT CUꢁꢁENT (mA)
181567 G09
181567 G07
181567 G08
Output Short-Circuit Current
vs Temperature
Output Current vs Temperature
Output Impedance vs Frequency
150
125
100
75
240
200
160
120
100
10
ꢀ
ꢀ
= ±5ꢀ
= ±1ꢀ
S
IN
SOUꢁCE
SINK
SOUꢁCE, ꢀ = ±5ꢀ
S
A
= 100
ꢀ
SINK, ꢀ = ±5ꢀ
SOUꢁCE, ꢀ = ±2.5ꢀ
S
S
A
= 10
ꢀ
1
SINK, ꢀ = ±2.5ꢀ
S
50
25
0
80
40
0
A
= 1
ꢀ
0.1
0.01
Δꢀ = ±0mꢀ
OS
ꢀ
OUT
ꢀ
OUT
= ±±ꢀ FOꢁ ꢀ = ±5ꢀ
S
T
= 25°C
= ±5ꢀ
A
S
= ±1ꢀ FOꢁ ꢀ = ±2.5ꢀ
S
ꢀ
50
0
TEMPEꢁATUꢁE (°C)
100 125
–50 –25
25
75
50
100 125
–50 –25
0
25
75
10k
100k
1M
FꢁEQUENCY (Hz)
10M
100M
TEMPEꢁATUꢁE (°C)
181567 G11
181567 G10
181567 G12
Gain Bandwidth and Phase
Margin vs Temperature
Gain and Phase vs Frequency
Gain vs Frequency, AV = 1
5
0
80
70
60
50
180
160
140
120
240
220
200
180
T
A
ꢀ
= 25°C
= 1
= ±5ꢀ
ꢁ
= 500Ω
A
ꢀ
S
L
GBW
= ±5ꢀ
ꢁ
= 500Ω
L
ꢀ
S
GAIN
GBW
= ±2.5ꢀ
±5ꢀ
ꢀ
S
±2.5ꢀ
ꢁ
L
= 100Ω
40
±0
100
80
PHASE
±2.5ꢀ
±5ꢀ
20
10
60
40
20
0
40
PHASE MAꢁGIN
= ±5ꢀ
–5
ꢀ
S
0
±8
±6
T
= 25°C
= –1
ꢀ
F
PHASE MAꢁGIN
A
A
ꢀ
= ±2.5ꢀ
–10
S
ꢁ
= ꢁ = 500Ω
G
–10
–20
–20
1M
10M
100M
500M
10k
100k
1M
10M
100M 500M
50
125
–50 –25
0
25
75 100
TEMPEꢁATUꢁE (°C)
FꢁEQUENCY (Hz)
FꢁEQUENCY (Hz)
181567 G13
181567 G14
181567 G15
181567fb
9
LT1815/LT1816/LT1817
TYPICAL PERFORMANCE CHARACTERISTICS
Gain Bandwidth and Phase
Margin vs Supply Voltage
Gain vs Frequency, AV = 2
Gain vs Frequency, AV = –1
5
0
10
5
240
220
200
180
ꢁ
= 500Ω
T
= 25°C
L
A
GBW
= 500Ω
ꢁ
L
ꢁ
L
= 500Ω
ꢁ
= 100Ω
L
GBW
= 100Ω
ꢁ
L
= 100Ω
ꢁ
L
0
160
45
40
±5
PHASE MAꢁGIN
ꢁ
= 100Ω
L
–5
T
A
ꢀ
ꢁ
C
= 25°C
= –1
T
A
ꢀ
ꢁ
C
= 25°C
= 2
A
ꢀ
S
F
F
A
ꢀ
S
F
F
–5
–10
= ±5ꢀ
= ±5ꢀ
PHASE MAꢁGIN
= 500Ω
= ꢁ = 500Ω
= ꢁ = 500Ω
G
G
ꢁ
L
= 1pF
= 1pF
–10
1M
10M
FꢁEQUENCY (Hz)
100M ±00M
1
2
4
5
6
7
0
±
1M
10M
FꢁEQUENCY (Hz)
100M ±00M
SUPPLY ꢀOLTAGE (±ꢀ)
181567 G17
181567 G18
181567 G16
Supply Current
vs Programming Resistor
Power Supply Rejection Ratio
vs Frequency
Common Mode Rejection Ratio
vs Frequency
100
80
60
40
20
0
7
6
5
4
±
2
1
0
100
80
60
40
20
0
T
A
ꢀ
= 25°C
ꢀ
T
= ±5ꢀ
S
T
= 25°C
A
ꢀ
S
A
S
= 1
= 25°C
ꢀ
= ±5ꢀ
A
= ±5ꢀ
PEꢁ AMPLIFIEꢁ
+PSꢁꢁ
–PSꢁꢁ
10
100
1k
10k
40k
1k
10k
100k
1M
10M
100M
1k
10k
100k
1M
10M
100M
ꢁ
PꢁOGꢁAMMING ꢁESISTOꢁ (Ω)
FꢁEQUENCY (Hz)
SET
FꢁEQUENCY (Hz)
181567 G19
181567 G20
181567 G21
Gain Bandwidth Product
vs Programming Resistor
Slew Rate vs Input Step
Slew Rate vs Supply Voltage
1800
1500
1200
900
250
200
150
100
50
1200
1000
800
T
=25°C
T
=25°C
= –1
ꢀ
T
= ±5ꢀ
A
ꢀ
S
A
ꢀ
S
A
A
ꢀ
= –1
A
ꢀ
= 25°C
= ±5ꢀ
= 2ꢀ
IN
P-P
ꢁ
= ꢁ = ꢁ = 500Ω
ꢁ
= ꢁ = ꢁ = 500Ω
F
G
L
F
G
L
+
–
ꢁ
= 500Ω
Sꢁ
Sꢁ
L
ꢁ
= 100Ω
L
+
–
Sꢁ
Sꢁ
600
600
0
±00
400
10
100
1k
10k
40k
4
7
8
0
2
±
5
6
1
4
7
0
2
±
5
6
1
ꢁ
SET
PꢁOGꢁAMING ꢁESISTOꢁ (Ω)
INPUT STEP (ꢀ
)
SUPPLY ꢀOLTAGE (±ꢀ)
P-P
181567 G2±
181567 G24
181567 G22
181567fb
10
LT1815/LT1816/LT1817
TYPICAL PERFORMANCE CHARACTERISTICS
Differential Gain and Phase
Slew Rate vs Temperature
vs Supply Voltage
Distortion vs Frequency, AV = 2
2400
2000
1600
1200
–±0
T
= 25°C
A
ꢀ
ꢀ
= 2
A
ꢀ
S
O
DIFFEꢁENTIAL GAIN
= 150Ω
0.10
0.08
0.06
0.04
0.02
0
= ±5ꢀ
ꢁ
+
–40
–50
–60
–70
–80
–90
–100
L
Sꢁ
= 2ꢀ
= 100Ω
P-P
ꢀ
= ±5ꢀ
ꢁ
S
L
–
0.12
0.10
0.08
0.06
0.04
0.02
0
Sꢁ
ꢀ
= ±5ꢀ
S
+
Sꢁ
ꢀ
ꢀ
= ±2.5ꢀ
S
S
DIFFEꢁENTIAL PHASE
= 150Ω
800
400
0
2ND HAꢁMONIC
±ꢁD HAꢁMONIC
ꢁ
–
L
Sꢁ
= ±2.5ꢀ
A
= –1
G L
ꢀ
F
ꢁ
= ꢁ = ꢁ = 500Ω
(NOTE 5)
50
100 125
–50 –25
0
25
75
4
6
8
10
12
10M
100k
1M
FꢁEQUENCY (Hz)
TEMPEꢁATUꢁE (°C)
TOTAL SUPPLY ꢀOLTAGE (ꢀ)
181567 G27
181567 G26
181567 G25
Small-Signal Transient,
AV = –1
Distortion vs Frequency, AV = –1
Distortion vs Frequency, AV = 1
–±0
–40
–50
–60
–70
–80
–90
–100
–±0
–40
–50
–60
–70
–80
–90
–100
A
ꢀ
ꢀ
= –1
A
ꢀ
ꢀ
= 1
ꢀ
S
O
ꢀ
S
O
= ±5ꢀ
= ±5ꢀ
= 2ꢀ
= 100Ω
= 2ꢀ
= 100Ω
L
P-P
P-P
ꢁ
ꢁ
L
2ND HAꢁMONIC
±ꢁD HAꢁMONIC
2ND HAꢁMONIC
±ꢁD HAꢁMONIC
181567 G±0
100k
10M
100k
10M
1M
FꢁEQUENCY (Hz)
1M
FꢁEQUENCY (Hz)
181567 G29
181567 G28
Small-Signal Transient,
AV = 1
Large-Signal Transient,
AV = –1, VS = 5V
Large-Signal Transient,
AV = 1, VS = 5V
181567 G±1
181567 G±2
181567 G±±
181567fb
11
LT1815/LT1816/LT1817
APPLICATIONS INFORMATION
Layout and Passive Components
closed-loop operation, this does not increase power dis-
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.
As with all high speed amplifiers, the LT1815/LT1816/
LT1817 require some attention to board layout. A ground
plane is recommended and trace lengths should be mini-
mized, especially on the negative input lead.
Low ESL/ESꢁ bypass capacitors should be placed directly
at the positive and negative supply (0.01μF ceramics are
recommended). For high drive current applications, ad-
ditional 1μF to 10μF tantalums should be added.
Capacitive Loading
The LT1815/LT1816/LT1817 are optimized for high band-
width and low distortion applications. They can drive a
capacitive load of 10pF in a unity-gain configuration and
more with higher gain. When driving a larger capacitive
load, a resistor of 10Ω to 50Ω should be connected be-
tween the output and the capacitive load to avoid ringing
or oscillation. The feedback should still be taken from the
output so that the resistor will isolate the capacitive load
to ensure stability.
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 1k
are used, a parallel capacitor of value:
C > ꢁ • C /ꢁ
F
F
G
IN
should be used to cancel the input pole and optimize dy-
namic performance. For applications where the DC noise
Slew Rate
The slew rate of the LT1815/LT1816/LT1817 is propor-
tional to the differential input voltage. Therefore, highest
slew rates are seen in the lowest gain configurations.
For example, a 5ꢀ output step in a gain of 10 has a 0.5ꢀ
input step, whereas in unity gain there is a 5ꢀ input step.
The LT1815/LT1816/LT1817 are tested for a slew rate
in a gain of –1. Lower slew rates occur in higher gain
configurations.
gain is 1 and a large feedback resistor is used, C should
F
be greater than or equal to C . An example would be an
IN
I-to-ꢀ converter.
Input Considerations
The inputs of the LT1815/LT1816/LT1817 amplifiers are
connected to the base of an NPN and PNP bipolar transis-
tor in parallel. 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 polar-
ity of the input bias current can be positive or negative.
The offset current, however, does not depend on beta
matching and is tightly controlled. Therefore, the use of
balanced source resistance at each input is recommended
for applications where DC accuracy must be maximized.
For example, with a 100Ω source resistance at each input,
the 800nA maximum offset current results in only 80μꢀ of
extraoffset,whilewithoutbalancethe8μAmaximuminput
bias current could result in a 0.8mꢀ offset contribution.
Programmable Supply Current
(LT1815/LT1816A)
In order to operate the LT1815S6 or LT1816A at full speed
(and full supply current), connect the I pin to the nega-
SET
tive supply through a resistance of 75Ω or less.
To adjust or program the supply current and speed of the
LT1815S6orLT1816A, connectanexternalresistor(ꢁ
)
SET
between the I pin and the negative supply, as shown in
SET
Figure 1. The amplifiers are fully functional with 0 ≤ ꢁ
SET
≤ 40k. Figures 2 and ± show how the gain bandwidth and
supply current vary with the value of the programming
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 80mA),
which results in the high slew rate. In normal transient
resistorꢁ Inaddition,theElectricalCharacteristicssec-
SET.
tion of the data sheet specifies maximum supply current
and offset voltage, as well as minimum gain bandwidth
and output current at the maximum ꢁ value of 40k.
SET
181567fb
12
LT1815/LT1816/LT1817
APPLICATIONS INFORMATION
5ꢀ
Power Dissipation
+
–
ꢀ
TheLT1815/LT1816/LT1817combinehighspeedandlarge
output drive in small packages. It is possible to exceed
the maximum junction temperature specification (150°C)
under certain conditions. Maximum junction temperature
(T )iscalculatedfromtheambienttemperature(T ),power
LT1815S6
–
ꢀ
+
I
SET
ꢁ
SET
J
A
–5ꢀ
181567 F01
dissipation per amplifier (P ) and number of amplifiers
D
(n) as follows:
Figure 1. Programming Resistor Between ISET and V–
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 on-chip dissipation caused by the load current. The
worst-case load induced power occurs when the output
voltage is at one-half of either supply voltage (or the
maximum swing if less than one-half the supply voltage).
250
ꢀ
= p5ꢀ
S
A
T
= 25°C
200
150
100
50
ꢁ
= 500Ω
L
Therefore, P
is:
DMAX
+
ꢁ
= 100Ω
L
–
+
2
P
DMAX
P
DMAX
= (ꢀ – ꢀ ) • (I
) + (ꢀ /2) /ꢁ or
SMAX
L
+
–
+
= (ꢀ – ꢀ ) • (I
) + (ꢀ – ꢀ
) • (ꢀ
/ꢁ )
OMAX L
SMAX
OMAX
Example: LT1816IS8 at 85°C, ꢀ = ±5ꢀ, ꢁ =100Ω
S
L
0
10
100
1k
10k
40k
2
P
DMAX
JMAX
= (10ꢀ) • (11.5mA) + (2.5ꢀ) /100Ω = 178mW
= 85°C + (2 • 178mW) • (150°C/W) = 1±8°C
ꢁ
PꢁOGꢁAMING ꢁESISTOꢁ (Ω)
SET
181567 F02
T
Figure 2. Gain Bandwidth Product vs RSET Programming Resistor
Circuit Operation
The LT1815/LT1816/LT1817 circuit topology is a true volt-
age feedback amplifier that has the slewing behavior of a
current 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 volt-
age appears across the resistor, generating current that
is mirrored into the high impedance node.
7
ꢀ
= ±5ꢀ
S
A
T
= 25°C
6
5
4
±
2
1
0
PEꢁ AMPLIFIEꢁ
Complementary followers form an output stage that buf-
fers 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 ꢁ1, so the slew rate is proportional to
the input step. Highest slew rates are therefore seen in
the lowest gain configurations.
10
100
1k
10k
40k
ꢁ
PꢁOGꢁAMMING ꢁESISTOꢁ (Ω)
SET
181567 F0±
Figure 3. Supply Current vs RSET Programming Resistor
181567fb
13
LT1815/LT1816/LT1817
SIMPLIFIED SCHEMATIC
(One Amplifier)
+
ꢀ
BIAS
CONTꢁOL
+IN
ꢁ1
OUT
–IN
C
I
SET
–
ꢀ
181567 SS
LT1815S6/LT1816AMS ONLY
TYPICAL APPLICATIONS
Two Op Amp Instrumentation Amplifier
ꢁ5
220Ω
ꢁ4
10k
ꢁ1
10k
ꢁ2
1k
ꢁ±
1k
–
1/2
LT1816
–
1/2
LT1816
+
+
ꢀ
–
OUT
ꢀ
IN
+
¨
©
·
¸
¸
R2 ꢁR3
¨
©
·
¸
¥
´ ¥
´
ꢂ
ꢃ
R4
R3
1
2
R2 R3
R1 R4
GAIN ꢀ
1ꢁ
ꢁ
ꢁ
ꢀ 102
¦
µ ¦
µ
©
R5
§
¶ §
¶
©
¸
ª
¹
©
ª
¸
¹
TꢁIM ꢁ5 FOꢁ GAIN
181567 TA03
TꢁIM ꢁ1 FOꢁ COMMON MODE ꢁEJECTION
BW = 2MHz
181567fb
14
LT1815/LT1816/LT1817
TYPICAL APPLICATIONS
Photodiode Transimpedance Amplifier
1pF
1pF
4.75k
5ꢀ
PHOTODIODE
SIEMENS/
INFINEON
SFH21±
–
+
LT1815
–5ꢀ
OUTPUT OFFSET ≤1mꢀ TYPICAL
BANDWIDTH = ±0MHz
–5ꢀ
10% TO 90% ꢁISE TIME = 22ns
OUTPUT NOISE (20MHz BW) = ±00μꢀ
P-P
181567 TA04
4.75k
0.01μF
4MHz, 4th Order Butterworth Filter
2±2Ω
274Ω
47pF
22pF
2±2Ω
665Ω
220pF
–
ꢀ
IN
274Ω
562Ω
470pF
–
1/2 LT1816
+
1/2 LT1816
+
ꢀ
OUT
181567 TA05
181567fb
15
LT1815/LT1816/LT1817
PACKAGE DESCRIPTION
S5 Package
5-Lead Plastic TSOT-23
(ꢁeference LTC DWG # 05-08-16±5)
0.62 MAX
0.95 REF
2.90 BSC
(NOTE 4)
1.22 REF
1.50 – 1.75
(NOTE 4)
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 3)
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 3)
NOTE:
S5 TSOT-23 0302 REV B
1. DIMENSIONS ARE IN MILLIMETERS
2. DRAWING NOT TO SCALE
4. DIMENSIONS ARE EXCLUSIVE OF MOLD FLASH AND METAL BURR
5. MOLD FLASH SHALL NOT EXCEED 0.254mm
3. DIMENSIONS ARE INCLUSIVE OF PLATING 6. JEDEC PACKAGE REFERENCE IS MO-193
S6 Package
6-Lead Plastic TSOT-23
(ꢁeference LTC DWG # 05-08-16±6)
2.90 BSC
(NOTE 4)
0.62 MAX
0.95 REF
1.22 REF
1.4 MIN
1.50 – 1.75
(NOTE 4)
2.80 BSC
3.85 MAX 2.62 REF
PIN ONE ID
RECOMMENDED SOLDER PAD LAYOUT
PER IPC CALCULATOR
0.30 – 0.45
6 PLCS (NOTE 3)
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 3)
S6 TSOT-23 0302 REV B
NOTE:
1. DIMENSIONS ARE IN MILLIMETERS
2. DRAWING NOT TO SCALE
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
3. DIMENSIONS ARE INCLUSIVE OF PLATING
181567fb
16
LT1815/LT1816/LT1817
PACKAGE DESCRIPTION
S8 Package
8-Lead Plastic Small Outline (Narrow .150 Inch)
(ꢁeference LTC DWG # 05-08-1610)
.189 – .197
(4.801 – 5.004)
.045 ±.005
NOTE 3
.050 BSC
7
5
8
6
.245
MIN
.160 ±.005
.150 – .157
(3.810 – 3.988)
NOTE 3
.228 – .244
(5.791 – 6.197)
.030 ±.005
TYP
1
3
4
2
RECOMMENDED SOLDER PAD LAYOUT
.010 – .020
(0.254 – 0.508)
× 45°
.053 – .069
(1.346 – 1.752)
.004 – .010
(0.101 – 0.254)
.008 – .010
(0.203 – 0.254)
0°– 8° TYP
.016 – .050
(0.406 – 1.270)
.050
(1.270)
BSC
.014 – .019
(0.355 – 0.483)
TYP
NOTE:
INCHES
1. DIMENSIONS IN
(MILLIMETERS)
2. DRAWING NOT TO SCALE
3. THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS.
MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED .006" (0.15mm)
SO8 0303
DD Package
8-Lead Plastic DFN (3mm × 3mm)
(ꢁeference LTC DWG # 05-08-1698 ꢁev C)
ꢁ = 0.125
0.40 p 0.10
TYP
5
8
0.70 p0.05
±.5 p0.05
2.10 p0.05 (2 SIDES)
1.65 p0.05
±.00 p0.10
(4 SIDES)
1.65 p 0.10
(2 SIDES)
PIN 1
TOP MAꢁK
(NOTE 6)
PACKAGE
OUTLINE
(DD8) DFN 0509 ꢁEꢀ C
4
1
0.25 p 0.05
0.75 p0.05
0.200 ꢁEF
0.25 p 0.05
0.50 BSC
0.50
BSC
2.±8 p0.10
2.±8 p0.05
BOTTOM ꢀIEW—EXPOSED PAD
0.00 – 0.05
ꢁECOMMENDED SOLDEꢁ PAD PITCH AND DIMENSIONS
APPLY SOLDEꢁ MASK TO AꢁEAS THAT AꢁE NOT SOLDEꢁED
NOTE:
1. DꢁAWING TO BE MADE A JEDEC PACKAGE OUTLINE M0-229 ꢀAꢁIATION OF (WEED-1)
2. DꢁAWING NOT TO SCALE
5. EXPOSED PAD SHALL BE SOLDEꢁ PLATED
6. SHADED AꢁEA IS ONLY A ꢁEFEꢁENCE FOꢁ PIN 1 LOCATION
ON TOP AND BOTTOM OF PACKAGE
±. ALL DIMENSIONS AꢁE IN MILLIMETEꢁS
4. DIMENSIONS OF EXPOSED PAD ON BOTTOM OF PACKAGE DO NOT INCLUDE
MOLD FLASH. MOLD FLASH, IF PꢁESENT, SHALL NOT EXCEED 0.15mm ON ANY SIDE
181567fb
17
LT1815/LT1816/LT1817
PACKAGE DESCRIPTION
MS8 Package
8-Lead Plastic MSOP
(ꢁeference LTC DWG # 05-08-1660 ꢁev F)
3.00 p 0.102
(.118 p .004)
(NOTE 3)
0.52
(.0205)
REF
8
7 6 5
0.889 p 0.127
(.035 p .005)
DETAIL “A”
0.254
3.00 p 0.102
(.118 p .004)
(NOTE 4)
4.90 p 0.152
(.193 p .006)
(.010)
5.23
(.206)
MIN
0o – 6o TYP
3.20 – 3.45
(.126 – .136)
GAUGE PLANE
0.53 p 0.152
(.021 p .006)
1
2
3
4
0.65
(.0256)
BSC
0.42 p 0.038
1.10
(.043)
MAX
0.86
(.034)
REF
(.0165 p .0015)
TYP
DETAIL “A”
RECOMMENDED SOLDER PAD LAYOUT
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
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
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
MS Package
10-Lead Plastic MSOP
(ꢁeference LTC DWG # 05-08-1661 ꢁev E)
±.00 ± 0.102
(.118 ± .004)
(NOTE ±)
0.889 ± 0.127
(.0±5 ± .005)
0.497 ± 0.076
(.0196 ± .00±)
ꢁEF
10 9
8
7 6
5.2±
(.206)
MIN
±.20 – ±.45
(.126 – .1±6)
±.00 ± 0.102
(.118 ± .004)
(NOTE 4)
4.90 ± 0.152
(.19± ± .006)
DETAIL “A”
0.254
(.010)
0° – 6° TYP
GAUGE PLANE
0.50
(.0197)
BSC
0.±05 ± 0.0±8
(.0120 ± .0015)
TYP
1
2
±
4 5
0.5± ± 0.152
(.021 ± .006)
ꢁECOMMENDED SOLDEꢁ PAD LAYOUT
0.86
(.0±4)
ꢁEF
1.10
(.04±)
MAX
DETAIL “A”
0.18
(.007)
SEATING
PLANE
0.17 – 0.27
(.007 – .011)
TYP
0.1016 ± 0.0508
(.004 ± .002)
0.50
(.0197)
BSC
MSOP (MS) 0±07 ꢁEꢀ E
NOTE:
1. DIMENSIONS IN MILLIMETEꢁ/(INCH)
2. DꢁAWING NOT TO SCALE
4. DIMENSION DOES NOT INCLUDE INTEꢁLEAD FLASH Oꢁ PꢁOTꢁUSIONS.
INTEꢁLEAD FLASH Oꢁ PꢁOTꢁUSIONS SHALL NOT EXCEED 0.152mm (.006") PEꢁ SIDE
5. LEAD COPLANAꢁITY (BOTTOM OF LEADS AFTEꢁ FOꢁMING) SHALL BE 0.102mm (.004") MAX
±. DIMENSION DOES NOT INCLUDE MOLD FLASH, PꢁOTꢁUSIONS Oꢁ GATE BUꢁꢁS. MOLD
FLASH, PꢁOTꢁUSIONS Oꢁ GATE BUꢁꢁS SHALL NOT EXCEED 0.152mm (.006") PEꢁ SIDE
181567fb
18
LT1815/LT1816/LT1817
PACKAGE DESCRIPTION
GN Package
16-Lead Plastic SSOP (Narrow .150 Inch)
(ꢁeference LTC DWG # 05-08-1641)
.045 p.005
.189 – .196*
(4.801 – 4.978)
.009
(0.229)
REF
16 15 14 13 12 11 10 9
.254 MIN
.150 – .165
.229 – .244
.150 – .157**
(5.817 – 6.198)
(3.810 – 3.988)
.0165 p.0015
.0250 BSC
RECOMMENDED SOLDER PAD LAYOUT
1
2
3
4
5
6
7
8
.015 p .004
(0.38 p 0.10)
s 45o
.0532 – .0688
(1.35 – 1.75)
.004 – .0098
(0.102 – 0.249)
.007 – .0098
(0.178 – 0.249)
0o – 8o TYP
.016 – .050
(0.406 – 1.270)
.0250
(0.635)
BSC
.008 – .012
GN16 (SSOP) 0204
(0.203 – 0.305)
TYP
NOTE:
1. CONTROLLING DIMENSION: INCHES
*DIMENSION DOES NOT INCLUDE MOLD FLASH. MOLD FLASH
SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE
**DIMENSION DOES NOT INCLUDE INTERLEAD FLASH. INTERLEAD
FLASH SHALL NOT EXCEED 0.010" (0.254mm) PER SIDE
INCHES
2. DIMENSIONS ARE IN
(MILLIMETERS)
3. DRAWING NOT TO SCALE
S Package
14-Lead Plastic Small Outline (Narrow .150 Inch)
(ꢁeference LTC DWG # 05-08-1610)
.337 – .344
.045 ±.005
(8.560 – 8.738)
.050 BSC
NOTE 3
14
N
13
12
11
10
9
8
N
1
.245
MIN
.160 ±.005
.150 – .157
.228 – .244
(5.791 – 6.197)
(3.810 – 3.988)
NOTE 3
2
3
N/2
N/2
7
.030 ±.005
TYP
RECOMMENDED SOLDER PAD LAYOUT
1
2
3
4
5
6
.010 – .020
(0.254 – 0.508)
× 45°
.053 – .069
(1.346 – 1.752)
.004 – .010
(0.101 – 0.254)
.008 – .010
(0.203 – 0.254)
0° – 8° TYP
.050
(1.270)
BSC
.014 – .019
(0.355 – 0.483)
TYP
.016 – .050
(0.406 – 1.270)
S14 0502
NOTE:
INCHES
(MILLIMETERS)
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" (0.15mm)
181567fb
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 representa-
tion that the interconnection of its circuits as described herein will not infringe on existing patent rights.
19
LT1815/LT1816/LT1817
TYPICAL APPLICATION
Bandpass Filter with Independently Settable Gain, Q and fC
455kHz Filter Frequency Response
ꢁ1
ꢁ = 499Ω
ꢀ
ꢀ
= ±5ꢀ
S
0
ꢁ1 = 499Ω
= 5ꢀ
IN
P-P
ꢁ
ꢁ
ꢁ
ꢁ
= 511Ω
= 49.9Ω
= 499Ω
DISTOꢁTION:
2nd < –76dB
±rd < –90dB
ACꢁOSS FꢁEQ
ꢁANGE
NOISE: ≈60μꢀ
OꢀEꢁ 1MHz
BANDWIDTH
F
Q
G
ꢁ
Q
C
ꢁ
G
–
ꢀ
IN
ꢁ
C = 680pF
–
1/4 LT1817
f
C
= 455kHz
ꢁ
C
F
–
+
Q = 10
1/4 LT1817
GAIN = 1
+
BANDPASS
OUT
1/4 LT1817
+
ꢁ1
G
GAIN =
ꢁ
ꢁ1
Q
Q =
ꢁ
ꢁ
ꢁ
F
1
–
+
f
C
=
100k
1M
10M
2Pꢁ C
F
FꢁEQUENCY (Hz)
181567 TA06b
1/4 LT1817
181567 TA06a
Differential DSL Receiver
5ꢀ
ꢀ
+
+
+ DꢁIꢀEꢁ
1/2 LT1816
–
DIFFEꢁENTIAL
ꢁECEIꢀE
SIGNAL
–
– DꢁIꢀEꢁ
1/2 LT1816
181567 TA07
+
–
ꢀ
–5ꢀ
PHONE
LINE
RELATED PARTS
PART NUMBER
DESCRIPTION
COMMENTS
Wide Supply ꢁange: ±2.5ꢀ to ±15ꢀ
LT1±6±/LT1±64/LT1±65 Single/Dual/Quad 70MHz, 1ꢀ/ns, C-Load™ Op Amps
LT1±95/LT1±96/LT1±97 Single/Dual/Quad 400MHz Current Feedback Amplifiers
4.6mA Supply Current, 800ꢀ/μs, 80mA Output Current
Low Noise: ±.5nꢀ/√Hz
LT1806/LT1807
LT1809/LT1810
Single/Dual ±25MHz, 140ꢀ/μs ꢁail-to-ꢁail I/O Op Amps
Single/Dual 180MHz, ±50ꢀ/μs ꢁail-to-ꢁail I/O Op Amps
Low Distortion: 90dBc at 5MHz
LT1812/LT181±/LT1814 Single/Dual/Quad ±mA, 100MHz, 750ꢀ/μs Op Amps
C-Load is a trademark of Linear Technology Corporation.
Low Power: ±.6mA Max at ±5ꢀ
181567fb
LT 0909 REV B • PRINTED IN USA
LinearTechnology Corporation
16±0 McCarthy Blvd., Milpitas, CA 950±5-7417
20
●
●
© LINEAR TECHNOLOGY CORPORATION 2001
(408) 4±2-1900 FAX: (408) 4±4-0507 www.linear.com
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Linear
LT1818IS5#PBF
LT1818 - 400MHz, 2500V/µs, 9mA Single Operational Amplifiers; Package: SOT; Pins: 5; Temperature Range: -40°C to 85°C
Linear
LT1818IS5#TR
LT1818 - 400MHz, 2500V/µs, 9mA Single Operational Amplifiers; Package: SOT; Pins: 5; Temperature Range: -40°C to 85°C
Linear
LT1818IS5#TRMPBF
LT1818 - 400MHz, 2500V/µs, 9mA Single Operational Amplifiers; Package: SOT; Pins: 5; Temperature Range: -40°C to 85°C
Linear
LT1818IS5#TRPBF
LT1818 - 400MHz, 2500V/µs, 9mA Single Operational Amplifiers; Package: SOT; Pins: 5; Temperature Range: -40°C to 85°C
Linear
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