OMO ElectronicOMO Electronic
Expand menu
Hello, Sign inMy Account
0 Cart

LT1797IS5#TRPBF

P1-P3P4-P6P7-P9P10-P12P13-P14
LT1797
1
1797fb
TYPICAL APPLICATION
FEATURES DESCRIPTION
10MHz, Rail-to-Rail
Input and Output
Op Amp in SOT-23
The LT
®
1797 is a unity-gain stable 10MHz op amp available
in the small SOT-23 package that operates on all single
and split supplies with a total voltage of 2.7V to 12V. The
amplifier draws 1mA of quiescent current and has a slew
rate of 2.25V/µs.
The input common mode range of the LT1797 includes
both rails, making it ideal for current sensing applications.
The input stage incorporates phase reversal protection
to prevent false outputs from occurring when the inputs
are driven beyond the supplies. Protective resistors are
included in the input leads so that current does not become
excessive when the inputs are forced above or below the
supplies.
The output of the LT1797 can swing to within 50mV of V
+
and 8mV of V
–
without drawing excess current in either
condition. The amplifier can drive loads up to 25mA and
still maintain rail-to-rail capability.
The LT1797 op amp is available in the space saving 5-lead
SOT-23 package.
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and
ThinSOT and Over-The-Top are trademarks of Linear Technology Corporation. All other
trademarks are the property of their respective owners.
Fast Compact –48V Current Sense
APPLICATIONS
n
Rail-to-Rail Input and Output
n
Small SOT-23 Package
n
Gain Bandwidth Product: 10MHz
n
–40°C to 85°C Operation
n
Slew Rate: 2.25V/µs
n
Low Input Offset Voltage: 1.5mV Max
n
High Output Current: 25mA Min
n
Specified on 3V, 5V and ±5V Supplies
n
High Voltage Gain: 1000V/mV 10k Load
n
High CMRR: 96dB Typ
n
High PSRR: 90dB Typ
n
Input Bias Current: 300nA Max
n
Input Offset Current: 25nA Max
n
Low Profile (1mm) SOT-23 (ThinSOT™) Package
n
Portable Instrumentation
n
Rail-to-Rail Buffer Amplifiers
n
Low Voltage Signal Processing
n
Driving A/D Converters
n
Battery-Powered Systems
Small-Signal Response
–
+
LT1797
0.1µF
R1 REDUCES Q1 DISSIPATION
Q1
FMMT493
0.003Ω
1% 3W
BZX84C6V8
V
Z
= 6.8V
–48V SUPPLY
(–42V TO –56V)
3.3k
0805
s3
30.1Ω
1%
I
SENSE
+–
R1
4.7k
V
S
= 3V
1k
1%
V
OUT
= 3V – 0.1Ω • I
SENSE
I
SENSE
= 0A TO 30A
ACCURACY ≈ 3%
–48V LOAD
1797 TA01
SETTLES TO 1% IN 2µs,
1V OUTPUT STEP
V
OUT
1797 TA01b
V
S
= ±2.5V
A
V
= 1
R
L
= 10k
LT1797
2
1797fb
PIN CONFIGURATIONABSOLUTE MAXIMUM RATINGS
Total Supply Voltage (V
+
to V
–
) ..............................12.6V
Input Differential Voltage .......................................12.6V
Input Current ........................................................±10mA
Output Short-Circuit Duration (Note 2) ........ Continuous
Operating Temperature Range (Note 3) ...–40°C to 85°C
Specified Temperature Range ..................–40°C to 85°C
Junction Temperature ........................................... 150°C
Storage Temperature Range ..................–65°C to 150°C
Lead Temperature (Soldering, 10 sec)...................300°C
(Note 1)
4
5
3
1
OUT
V
–
+IN
V
+
–IN
TOP VIEW
S5 PACKAGE
5-LEAD PLASTIC TSOT-23
2
+
–
T
JMAX
= 150°C, θ
JA
= 250°C/W
ORDER INFORMATION
LEAD FREE FINISH TAPE AND REEL PART MARKING PACKAGE DESCRIPTION TEMPERATURE RANGE
LT1797CS5#PBF LT1797CS5#TRPBF LTLM 5-Lead Plastic TSOT-23 –40°C to 85°C
LT1797IS5#PBF LT1797IS5#TRPBF LTTL 5-Lead Plastic TSOT-23 –40°C to 85°C
Consult LTC Marketing for parts specified with wider operating temperature ranges.
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 T
A
= 25°C. V
S
= 3V, 0V; V
S
= 5V, 0V, V
CM
= V
OUT
= half supply, pulse power tested,
unless otherwise specified. (Note 3)
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
OS
Input Offset Voltage
0°C ≤ T
A
≤ 70°C
–40°C ≤ T
A
≤ 85°C
l
l
1 1.5
2.5
3.0
mV
mV
mV
Input Offset Voltage Drift (Note 4)
l
520µV/°C
I
B
Input Bias Current V
CM
= V
–
V
CM
= V
+
l
l
–300 –150
50 100
nA
nA
Input Bias Current Drift
l
0.1 nA/°C
I
OS
Input Offset Current V
CM
= V
–
V
CM
= V
+
l
l
10
10
25
25
nA
nA
Input Noise Voltage 0.1Hz to 10Hz 1.5 µV
P-P
e
n
Input Noise Voltage Density f = 10kHz 20 nV/√Hz
i
n
Input Noise Current Density f = 10kHz
f = 10kHz, V
CM
= V
CC
– 0.3V
0.23
0.15
pA/√Hz
pA/√Hz
R
IN
Input Resistance Differential
Common Mode, V
CM
= 0V to V
S
– 1.3V
200 330
100
k
M
C
IN
Input Capacitance 4pF
CMRR Common Mode Rejection Ratio V
CM
= 0V to V
S
– 1.3V
V
S
= 5V, V
CM
= 0V to 5V
V
S
= 3V, V
CM
= 0V to 3V
l
l
l
82
64
60
96
72
68
dB
dB
dB
LT1797
3
1797fb
ELECTRICAL CHARACTERISTICS
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
S
= 3V, 0V; V
S
= 5V, 0V, V
CM
= V
OUT
= half supply, pulse power tested,
unless otherwise specified. (Note 3)
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
Input Voltage Range
l
0V
S
V
A
VOL
Large-Signal Voltage Gain V
S
= 3V, V
O
= 0.5V to 2.5V, R
L
= 10k
l
200
150
1000 V/mV
V/mV
V
S
= 5V, V
O
= 0.5V to 4.5V, R
L
= 10k
l
400
300
1000 V/mV
V/mV
PSRR Power Supply Rejection Ratio V
S
= 2.7V to 12V, V
CM
= V
O
= 1V
l
80 90 dB
Minimum Supply Voltage
l
2.5 2.7 V
V
OL
Output Voltage Swing LOW No Load, Input Overdrive = 30mV
I
SINK
= 5mA
I
SINK
= 10mA
l
l
l
8
80
150
30
160
250
mV
mV
mV
V
OH
Output Voltage Swing HIGH No Load, Input Overdrive = 30mV
I
SOURCE
= 5mA
I
SOURCE
= 10mA, V
S
= 5V
I
SOURCE
= 10mA, V
S
= 3V
l
l
l
l
V
S
– 0.14
V
S
– 0.30
V
S
– 0.39
V
S
– 0.59
V
S
– 0.05
V
S
– 0.2
V
S
– 0.3
V
S
– 0.3
V
V
V
V
I
SC
Short-Circuit Current V
S
= 5V
V
S
= 3V
25
15
45
25
mA
mA
I
S
Supply Current
l
1.1 1.5
2.0
mA
mA
GBW Gain Bandwidth Product (Note 5) f = 100kHz
0°C ≤ T
A
≤ 70°C
–40°C ≤ T
A
≤ 85°C
l
l
6.0
5.0
4.5
10 MHz
MHz
MHz
SR Slew Rate (Note 5) A
V
= –1
0°C ≤ T
A
≤ 70°C
–40°C ≤ T
A
≤ 85°C
l
l
1.3
1.1
1.0
2.25 V/µs
V/µs
V/µs
t
r
Output Rise Time 10% to 90%, 0.1V Step, R
L
= 10k 55 ns
t
f
Output Fall Time 10% to 90%, 0.1V Step, R
L
= 10k 55 ns
t
S
Settling Time V
S
= 5V, ∆V
OUT
= 2V to 0.1%, A
V
= –1 1.6 µs
THD Distortion V
S
= 3V, V
OUT
= 1.8V
P-P
, A
V
= 1, R
L
= 10k, f = 1kHz 0.001 %
FPBW Full-Power Bandwidth (Note 6) V
OUT
= 2V
P-P
360 kHz
The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at T
A
= 25°C.
V
S
= ±5V, V
CM
= 0V, V
OUT
= 0V, pulse power tested unless otherwise specified. (Note 3)
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
OS
Input Offset Voltage
0°C ≤ T
A
≤ 70°C
–40°C ≤ T
A
≤ 85°C
l
l
1 1.5
2.5
3.0
mV
mV
mV
Input Offset Voltage Drift (Note 4)
l
5 20 µV/°C
I
B
Input Bias Current V
CM
= V
–
V
CM
= V
+
l
l
–300 –150
50 100
nA
nA
Input Bias Current Drift
l
0.1 nA/°C
I
OS
Input Offset Current V
CM
= V
–
V
CM
= V
+
l
l
10
10
25
25
nA
nA
Input Noise Voltage 0.1Hz to 10Hz 1 µV
P-P
e
n
Input Noise Voltage Density f = 10kHz 20 nV/√Hz
i
n
Input Noise Current Density f = 10kHz
f = 10kHz, V
CM
= 4.7V
0.23
0.15
pA/√Hz
pA/√Hz
P1-P3P4-P6P7-P9P10-P12P13-P14

LT1797IS5#TRPBF

Mfr. #:
Buy LT1797IS5#TRPBF
Manufacturer:
Analog Devices Inc.
Description:
Operational Amplifiers - Op Amps 10MHz, R2R In & Out Op Amp in SOT-23
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union

Products related to this Datasheet