LT1999C ..............................................–40°C to 85°C
LT1999I................................................–40°C to 85°C
LT1999H ............................................ –40°C to 125°C
LT1999MP ......................................... –55°C to 150°C
Specified Temperature Range (Note 6)
LT1999C .................................................. 0°C to 70°C
LT1999I................................................–40°C to 85°C
LT1999H ............................................ –40°C to 125°C
LT1999MP ......................................... –55°C to 150°C
Junction Temperature ........................................... 150°C
Storage Temperature Range .................. –65°C to 150°C
pin conFiguraTion
TOP VIEW
TOP VIEW
+IN 2
–IN 3
V
+
4
V
+
1
8
7
6
5
SHDN
OUT
REF
GND
V
+
1
+IN 2
–IN 3
V
+
4
8
7
6
5
SHDN
OUT
REF
GND
MS8 PACKAGE
8-LEAD PLASTIC MSOP
T
JMAX
= 150°C,
Θ
JA
= 300°C/W
S8 PACKAGE
8-LEAD PLASTIC SO
T
JMAX
= 150°C,
Θ
JA
= 190°C/W
orDer inForMaTion
LEAD FREE FINISH
LT1999CMS8-10#PBF
LT1999IMS8-10#PBF
LT1999HMS8-10#PBF
LT1999MPMS8-10#PBF
LT1999CS8-10#PBF
LT1999IS8-10#PBF
LT1999HS8-10#PBF
LT1999MPS8-10#PBF
LT1999CMS8-20#PBF
LT1999IMS8-20#PBF
LT1999HMS8-20#PBF
LT1999MPMS8-20#PBF
TAPE AND REEL
LT1999CMS8-10#TRPBF
LT1999IMS8-10#TRPBF
LT1999HMS8-10#TRPBF
LT1999MPMS8-10#TRPBF
LT1999CS8-10#TRPBF
LT1999IS8-10#TRPBF
LT1999HS8-10#TRPBF
LT1999MPS8-10#TRPBF
LT1999CMS8-20#TRPBF
LT1999IMS8-20#TRPBF
LT1999HMS8-20#TRPBF
LT1999MPMS8-20#TRPBF
PART MARKING*
LTFPB
LTFPB
LTFPB
LTFQP
199910
199910
199910
99MP10
LTFNZ
LTFNZ
LTFNZ
LTFQQ
PACKAGE DESCRIPTION
8-Lead Plastic MSOP
8-Lead Plastic MSOP
8-Lead Plastic MSOP
8-Lead Plastic MSOP
8-Lead Plastic SO
8-Lead Plastic SO
8-Lead Plastic SO
8-Lead Plastic SO
8-Lead Plastic MSOP
8-Lead Plastic MSOP
8-Lead Plastic MSOP
8-Lead Plastic MSOP
SPECIFIED TEMPERATURE RANGE
0°C to 70°C
–40°C to 85°C
–40°C to 125°C
–55°C to 150°C
0°C to 70°C
–40°C to 85°C
–40°C to 125°C
–55°C to 150°C
0°C to 70°C
–40°C to 85°C
–40°C to 125°C
–55°C to 150°C
1999fb
2
LT1999-10/LT1999-20/
LT1999-50
orDer inForMaTion
LEAD FREE FINISH
LT1999CS8-20#PBF
LT1999IS8-20#PBF
LT1999HS8-20#PBF
LT1999MPS8-20#PBF
LT1999CMS8-50#PBF
LT1999IMS8-50#PBF
LT1999HMS8-50#PBF
LT1999MPMS8-50#PBF
LT1999CS8-50#PBF
LT1999IS8-50#PBF
LT1999HS8-50#PBF
LT1999MPS8-50#PBF
TAPE AND REEL
LT1999CS8-20#TRPBF
LT1999IS8-20#TRPBF
LT1999HS8-20#TRPBF
LT1999MPS8-20#TRPBF
LT1999CMS8-50#TRPBF
LT1999IMS8-50#TRPBF
LT1999HMS8-50#TRPBF
LT1999MPMS8-50#TRPBF
LT1999CS8-50#TRPBF
LT1999IS8-50#TRPBF
LT1999HS8-50#TRPBF
LT1999MPS8-50#TRPBF
PART MARKING*
199920
199920
199920
99MP20
LTFPC
LTFPC
LTFPC
LTFQR
199950
199950
199950
99MP50
PACKAGE DESCRIPTION
8-Lead Plastic SO
8-Lead Plastic SO
8-Lead Plastic SO
8-Lead Plastic SO
8-Lead Plastic MSOP
8-Lead Plastic MSOP
8-Lead Plastic MSOP
8-Lead Plastic MSOP
8-Lead Plastic SO
8-Lead Plastic SO
8-Lead Plastic SO
8-Lead Plastic SO
SPECIFIED TEMPERATURE RANGE
0°C to 70°C
–40°C to 85°C
–40°C to 125°C
–55°C to 150°C
0°C to 70°C
–40°C to 85°C
–40°C to 125°C
–55°C to 150°C
0°C to 70°C
–40°C to 85°C
–40°C to 125°C
–55°C to 150°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/
The
l
denotes the specifications which apply over the full operating
temperature range, 0°C < T
A
< 70°C for C-grade parts, –40°C < T
A
< 85°C for I-grade parts, and –40°C < T
A
< 125°C for H-grade parts,
otherwise specifications are at T
A
= 25°C. V
+
= 5V, GND = 0V, V
CM
= 12V, V
REF
= floating, V
SHDN
= floating, unless otherwise specified.
See Figure 2.
SYMBOL
V
SENSE
V
CM
R
IN(DIFF)
R
INCM
V
OSI
ΔV
OSI
/ΔT
A
V
A
V
Error
I
B
I
OS
PSRR
PARAMETER
Full-Scale Input Sense Voltage (Note 7)
V
SENSE
= V
+IN
– V
–IN
CM Input Voltage Range
Differential Input Impedance
CM Input Impedance
Input Referred Voltage Offset
l
elecTrical characTerisTics
CONDITIONS
LT1999-10
LT1999-20
LT1999-50
ΔV
INDIFF
= ±2V/Gain
ΔV
CM
= 5.5V to 80V
ΔV
CM
= –5V to 4.5V
l
l
l
l
l
l
l
MIN
–0.35
–0.2
–0.08
–5
6.4
5
3.6
–750
–1500
9.95
19.9
48.75
–0.5
100
–2.35
–1
–10
–2.5
68
TYP
MAX
0.35
0.2
0.08
80
UNITS
V
V
V
V
kΩ
MΩ
kΩ
μV
μV
μV/°C
V/V
V/V
V/V
%
μA
mA
μA
μA
μA
μA
dB
1999fb
8
20
4.8
±500
5
9.6
6
750
1500
10.05
20.1
50.25
0.5
175
–1.5
2.5
1
10
2.5
Input Referred Voltage Offset Drift
Gain
LT1999-10
LT1999-20
LT1999-50
ΔV
OUT
= ±2V
V
CM
> 5.5V
V
CM
= –5V
V
SHDN
= 0.5V, 0V < V
CM
< 80V
V
CM
> 5.5V
V
CM
= –5V
V
SHDN
= 0.5V, 0V < V
CM
< 80V
V
+
= 4.5V to 5.5V
l
l
l
l
l
l
l
l
l
l
l
10
20
50
±0.2
137.5
–1.95
0.001
Gain Error
Input Bias Current
I(+IN) = I(–IN)
(Note 8)
Input Offset Current
I
OS
= I(+IN) – I(–IN)
(Note 8)
Supply Rejection Ratio
77
3
LT1999-10/LT1999-20/
LT1999-50
elecTrical characTerisTics
SYMBOL
CMRR
PARAMETER
Sense Input Common Mode Rejection
The
l
denotes the specifications which apply over the full operating
temperature range, 0°C < T
A
< 70°C for C-grade parts, –40°C < T
A
< 85°C for I-grade parts, and –40°C < T
A
< 125°C for H-grade parts,
otherwise specifications are at T
A
= 25°C. V
+
= 5V, GND = 0V, V
CM
= 12V, V
REF
= floating, V
SHDN
= floating, unless otherwise specified.
See Figure 2.
CONDITIONS
V
CM
= –5V to 80V
V
CM
= –5V to 5.5V
V
CM
= 12V, 7V
P-P
, f = 100kHz,
V
CM
= 0V, 7V
P-P
, f = 100kHz
f = 10kHz
f = 0.1Hz to 10Hz
LT1999-10
LT1999-20
LT1999-50
V
SHDN
= 0.5V
V
SHDN
= 0.5V
LT1999-10
LT1999-20
LT1999-50
V
+
= 5.5V, V
SHDN
= 0V
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
MIN
96
96
75
80
TYP
105
120
90
100
97
8
MAX
UNITS
dB
dB
dB
dB
nV/√Hz
μV
P-P
dB
dB
dB
e
n
REF
RR
Differential Input Referred Noise Voltage Density
REF Pin Rejection, V
+
= 5.5V
ΔV
REF
= 3.0V
ΔV
REF
= 3.25V
ΔV
REF
= 3.25V
REF Pin Input Impedance
Open Circuit Voltage
REF Pin Input Range (Note 9)
62
62
62
60
0.15
2.45
1
1.25
1.125
1.125
–6
V
+
– 0.5
70
70
70
80
0.4
2.5
2.5
100
0.65
2.55
2.75
V
+
– 1.25
V
+
– 1.125
V
+
– 1.125
–2
0.5
2
2
1.2
3
2.5
0.8
1
1.3
R
REF
V
REF
V
REFR
I
SHDN
V
IH
V
IL
f
3dB
SR
t
s
t
r
V
S
I
S
R
O
I
SRC
I
SNK
V
OUT
kΩ
MΩ
V
V
V
V
V
μA
V
V
MHz
MHz
MHz
V/μs
μs
μs
μs
μs
Pin Pull-Up Current
SHDN
Pin Input High
SHDN
Pin Input Low
Small Signal Bandwidth
LT1999-10
LT1999-20
LT1999-50
0.5% Settling
LT1999-10
LT1999-20
LT1999-50
l
Slew Rate
Settling Time due to Input Step, ΔV
OUT
= ±2V
Common Mode Step Recovery Time
ΔV
CM
= ±50V, 20ns
(Note 10)
Supply Voltage (Note 11)
Supply Current
V
CM
> 5.5V
V
CM
= –5V
V
+
= 5.5V, V
SHDN
= 0.5V, V
CM
> 0V
ΔI
O
= ±2mA
R
LOAD
= 50Ω to GND
R
LOAD
= 50Ω to V
+
R
LOAD
= 1kΩ to Mid-Supply
R
LOAD
= Open
R
LOAD
= 1kΩ to Mid-Supply
R
LOAD
= Open
V
SHDN
= 0V to 5V
V
SHDN
= 5V to 0V
l
l
l
l
l
l
4.5
5
1.55
5.8
3
0.15
5.5
1.9
7.1
10
40
40
250
125
400
225
V
mA
mA
μA
Ω
mA
mA
mV
mV
mV
mV
μs
μs
l
l
l
Output Impedance
Sourcing Output Current
Sinking Output Current
Swing Output High (with Respect to V
+
)
Swing Output Low (with Respect to V
–
)
6
15
31
26
125
5
250
150
1
1
t
ON
t
OFF
Turn-On Time
Turn-Off Time
1999fb
4
LT1999-10/LT1999-20/
LT1999-50
elecTrical characTerisTics
SYMBOL
V
SENSE
V
CM
R
IN(DIFF)
R
INCM
V
OSI
ΔV
OSI
/ΔT
A
V
A
V
Error
I
B
I
OS
PSRR
CMRR
PARAMETER
Full-Scale Input Sense Voltage (Note 7)
V
SENSE
= V
+IN
– V
–IN
CM Input Voltage Range
Differential Input Impedance
CM Input Impedance
Input Referred Voltage Offset
l
The
l
denotes the specifications which apply over the full operating
temperature range, –55°C < T
A
< 150°C for MP-grade parts, otherwise specifications are at T
A
= 25°C. V
+
= 5V, GND = 0V, V
CM
= 12V,
V
REF
= floating, V
SHDN
= floating, unless otherwise specified. See Figure 2.
主题：自备终端(BYOD)发展趋势;用员工自己的移动设备来控制对工作设施及设备的使用，会对信息安全产生怎样的影响;在不使公司有安全风险或不损害员工隐私的前提下，有哪些方式能安全地实现这样的设施及设备使用。 自备终端(Bring Your Own Device，简称BYOD)，即企业允许员工离职时保留自己的手机，这种做法正日益流行。如今智能手机功能也越来越多，我们不仅能用自己的手机访问电脑、网...[详细]
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