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PDF LT1637CMS8 Data sheet ( Hoja de datos )
| Número de pieza | LT1637CMS8 | |
| Descripción | 1.1MHz/ 0.4V/us Over-The-Top Micropower/ Rail-To-Rail Input and Output Op Amp | |
| Fabricantes | Linear Technology | |
| Logotipo |  |
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LT1637
1.1MHz, 0.4V/µs
Over-The-Top Micropower, Rail-To-Rail
Input and Output Op Amp
FEATURES
s Operates with Inputs Above V +
s Rail-to-Rail Input and Output
s Micropower: 250µA Supply Current Max
s Gain-Bandwidth Product: 1.1MHz
s Slew Rate: 0.4V/µs
s Low Input Offset Voltage: 350µV Max
s Single Supply Input Range: – 0.4V to 44V
s High Output Current: 25mA Min
s Specified on 3V, 5V and ±15V Supplies
s Output Shutdown
s Output Drives 4700pF with Output Compensation
s Reverse Battery Protection to 25V
s High Voltage Gain: 800V/mV
s High CMRR: 110dB
DESCRIPTIO
The LT®1637 is a rugged op amp that operates on all single
and split supplies with a total voltage of 2.7V to 44V. The
LT1637 has a gain-bandwidth product of 1.1MHz while
drawing less than 250µA of quiescent current. The LT1637
can be shut down, making the output high impedance and
reducing the quiescent current to only 3µA. The LT1637 is
reverse supply protected: it draws virtually no current for
reverse supply up to 25V. The input range of the LT1637
includes both supplies and the output swings to both
supplies. Unlike most micropower op amps, the LT1637
can drive heavy loads; its rail-to-rail output drives 25mA.
The LT1637 is unity-gain stable into all capacitive loads up
to 4700pF when optional 0.22µF and 150Ω compensation
is used.
U
APPLICATIO S
s Battery or Solar Powered Systems:
Portable Instrumentation
Sensor Conditioning
s Supply Current Sensing
s Battery Monitoring
s MUX Amplifiers
s 4mA to 25mA Transmitters
The LT1637 has a unique input stage that operates and
remains high impedance when above the positive supply.
The inputs take 44V both differential and common mode,
even when operating on a 3V supply. Built-in resistors
protect the inputs for faults below the negative supply up
to 22V. There is no phase reversal of the output for inputs
5V below VEE or 44V above VEE, independent of VCC.
The LT1637 op amp is available in the 8-pin MSOP, PDIP
and SO packages.
, LTC and LT are registered trademarks of Linear Technology Corporation.
Over-The-Top is a trademark of Linear Technology Corporation.
TYPICAL APPLICATIO
Over-The-TopTM Current Source with Shutdown
Switchable Precision Current Source
+
4.7µF
R*
+
LT1004-1.2
2k
LT1637
–
4V TO 44V
R
TP0610
IOUT
=
1.2
R
IOUT e.g., 10mA = 120Ω
VSHDN
6V
4V
2V
0V
10mA
SHDN
*OPTIONAL FOR LOW OUTPUT CURRENTS,
R* = R
1637 TA01
IOUT 5mA
0mA
Current Source Timing
100µs/DIV
1637 TA01b
1
1 page  
LT1637
±15V ELECTRICAL CHARACTERISTICS
The q denotes the specifications which apply over the specified temperature range, otherwise specifications are at TA = 25°C.
VS = ±15V, VCM = 0V, VOUT = 0V, VSHDN = V – unless otherwise specified. (Note 4)
SYMBOL PARAMETER
GBW Gain-Bandwidth Product
SR Slew Rate
CONDITIONS
f = 10kHz
0°C ≤ TA ≤ 70°C
– 40°C ≤ TA ≤ 85°C
AV = – 1, RL = ∞, VO = ±10V, Measure at VO = ±5V
0°C ≤ TA ≤ 70°C
– 40°C ≤ TA ≤ 85°C
MIN TYP MAX UNITS
750
q 650
q 600
1100
kHz
kHz
kHz
0.225
q 0.200
q 0.180
0.4
V/µs
V/µs
V/µs
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: A heat sink may be required to keep the junction temperature
below absolute maximum.
Note 3: The LT1637 is guaranteed functional over the operating
temperature range of – 40°C to 85°C.
Note 4: The LT1637C is guaranteed to meet specified performance from
0°C to 70°C. The LT1637C is designed, characterized and expected to
meet specified performance from – 40°C to 85°C but is not tested or QA
sampled at these temperatures. The LT1637I is guaranteed to meet
specified performance from – 40°C to 85°C.
Note 5: VS = 5V limits are guaranteed by correlation to VS = 3V and
VS = ±15V or VS = ±22V tests.
Note 6: VS = 3V limits are guaranteed by correlation to VS = 5V and
VS = ±15V or VS = ±22V tests.
Note 7: Guaranteed by correlation to slew rate at VS = ±15V and GBW at
VS = 3V and VS = ±15V tests.
Note 8: This specification implies a typical input offset voltage of 650µV at
VCM = 44V and a maximum input offset voltage of 5.4mV at VCM = 44V.
Note 9: This parameter is not 100% tested.
TYPICAL PERFOR A CE CHARACTERISTICS
Supply Current vs Supply Voltage
400
350
300
250 TA = 125°C
200 TA = 25°C
150 TA = –55°C
100
50
0
0 10 20 30 40
TOTAL SUPPLY VOLTAGE (V)
1637 G01
Minimum Supply Voltage
400
300
200
100
0
–100
TA = 125°C
–200
TA = –55°C
–300
–400
0
TA = 25°C
1234
TOTAL SUPPLY VOLTAGE (V)
5
1637 G02
Input Bias Current
vs Common Mode Voltage
40
30 VS = 5V, 0V
20
10
0.12 TA = –55°C
0.08
0.04 TA = 125°C
0 TA = 25°C
0.04
0.08
4 4.2 4.4 4.6 4.8 5 10 20 30 40 50
COMMON MODE VOLTAGE (V)
1637 G03
5
5 Page 
LT1637
PACKAGE DESCRIPTIO Dimensions in inches (millimeters) unless otherwise noted.
MS8 Package
8-Lead Plastic MSOP
(LTC DWG # 05-08-1660)
0.007
(0.18)
0° – 6° TYP
0.021 ± 0.006
(0.53 ± 0.015)
0.040 ± 0.006
(1.02 ± 0.15)
SEATING
PLANE
0.012
(0.30)
REF
0.0256
(0.65)
BSC
0.034 ± 0.004
(0.86 ± 0.102)
0.006 ± 0.004
(0.15 ± 0.102)
* DIMENSION DOES NOT INCLUDE MOLD FLASH, PROTRUSIONS OR GATE BURRS. MOLD FLASH,
PROTRUSIONS OR GATE BURRS SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE
** DIMENSION DOES NOT INCLUDE INTERLEAD FLASH OR PROTRUSIONS.
INTERLEAD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE
0.118 ± 0.004*
(3.00 ± 0.102)
0.193 ± 0.006
(4.90 ± 0.15)
8 76 5
0.118 ± 0.004**
(3.00 ± 0.102)
MSOP (MS8) 1098
1 234
0.300 – 0.325
(7.620 – 8.255)
N8 Package
8-Lead PDIP (Narrow 0.300)
(LTC DWG # 05-08-1510)
0.045 – 0.065
(1.143 – 1.651)
0.130 ± 0.005
(3.302 ± 0.127)
0.400*
(10.160)
MAX
87 65
0.009 – 0.015
(0.229 – 0.381)
0.065
(1.651)
TYP
+0.035
0.325 –0.015
( )8.255
+0.889
–0.381
0.100
(2.54)
BSC
*THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS.
MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.010 INCH (0.254mm)
0.125
(3.175)
MIN
0.018 ± 0.003
(0.457 ± 0.076)
0.020
(0.508)
MIN
0.255 ± 0.015*
(6.477 ± 0.381)
12
34
N8 1098
S8 Package
8-Lead Plastic Small Outline (Narrow 0.150)
(LTC DWG # 05-08-1610)
0.010
(0.254
–
–
0.020
0.508)
×
45°
0.008 – 0.010
(0.203 – 0.254)
0.053 – 0.069
(1.346 – 1.752)
0°– 8° TYP
0.016 – 0.050
(0.406 – 1.270)
0.014 – 0.019
(0.355 – 0.483)
TYP
*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
0.004 – 0.010
(0.101 – 0.254)
0.050
(1.270)
BSC
0.228 – 0.244
(5.791 – 6.197)
0.189 – 0.197*
(4.801 – 5.004)
8 765
1 2 34
0.150 – 0.157**
(3.810 – 3.988)
SO8 1298
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 represen-
tation that the interconnection of its circuits as described herein will not infringe on existing patent rights.
11
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet LT1637CMS8.PDF ] | |
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