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PDF LT1638CS8 Data sheet ( Hoja de datos )
| Número de pieza | LT1638CS8 | |
| Descripción | 1.2MHz/ 0.4V/us Over-The-TopTM Micropower Rail-to-Rail Input and Output Op Amps | |
| Fabricantes | Linear Technology | |
| Logotipo |  |
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FEATURES
s Operates with Inputs Above V +
s Rail-to-Rail Input and Output
s Low Power: 230µA per Amplifier Max
s Gain Bandwidth Product: 1.2MHz
s Slew Rate: 0.4V/µs
s High Output Current: 25mA Min
s Specified on 3V, 5V and ±15V Supplies
s Reverse Battery Protection to 18V
s No Supply Sequencing Problems
s High Voltage Gain: 1500V/mV
s Single Supply Input Range: – 0.4V to 44V
s High CMRR: 98dB
s No Phase Reversal
U
APPLICATIONS
s Battery- or Solar-Powered Systems
Portable Instrumentation
Sensor Conditioning
s Supply Current Sensing
s Battery Monitoring
s Micropower Active Filters
s 4mA to 20mA Transmitters
, LTC and LT are registered trademarks of Linear Technology Corporation.
Over-The-Top is a trademark of Linear Technology Corporation.
LT1638/LT1639
1.2MHz, 0.4V/µs
Over-The-TopTM Micropower
Rail-to-Rail Input and Output
Op Amps
DESCRIPTION
The LT®1638 is a low power dual rail-to-rail input and output
operational amplifier available in the standard 8-pin PDIP and
SO packages as well as the 8-lead MSOP package. The
LT1639 is a low power quad rail-to-rail input and output
operational amplifier offered on the standard 14-pin PDIP
and surface mount packages.
The LT1638/LT1639 op amps operate on all single and
split supplies with a total voltage of 2.5V to 44V drawing
only 170µA of quiescent current per amplifier. These
amplifiers are reverse battery protected and draw no
current for reverse supply up to 18V.
The input range of the LT1638/LT1639 includes both
supplies, and a unique feature of this device is its capability
to operate over the top with either or both of its inputs
above V+. The inputs handle 44V, both differential and
common mode, independent of supply voltage. The input
stage incorporates phase reversal protection to prevent
false outputs from occurring even when the inputs are 22V
below the negative supply. Protective resistors are
included in the input leads so that current does not
become excessive when the inputs are forced below the
negative supply. The LT1638/LT1639 can drive loads up to
25mA and still maintain rail-to-rail capability. The op amps
are unity-gain stable and drive all capacitive loads up to
1000pF when optional output compensation is used.
TYPICAL APPLICATION
Over-The-Top Comparator with 100mV Hysteresis Centered at 0mV
10k
V1
1M
VCC
+
A
1/2 LT1638
–
VCC
1M
1M
VCC
+
B
1/2 LT1638
–
V0
10k
V2
1M
1638/39 TA01
VCC = 5V, VCM = 0V TO 44V, tPD = 27µs
Output Voltage vs Input Voltage
5V
0V
1638/39 TA02
1
1 page  
TYPICAL PERFORMANCE CHARACTERISTICS
Supply Current vs Supply Voltage
300
280
260 TA = 125°C
240
220 TA = 25°C
200
180
160 TA = –55°C
140
120
100
0 5 10 15 20 25 30 35 40 45
SUPPLY VOLTAGE (V)
1638/39 G01
Output Saturation Voltage vs
Load Current (Output High)
1
VS = ±2.5V
VOD = 30mV
TA = 125°C
0.1 TA = 25°C
TA = –55°C
0.01
0.001
0.01 0.1
1
SOURCING LOAD CURRENT (mA)
10
1638/39 G04
0.1Hz to 10Hz Noise Voltage
VS = ±2.5
0 12
3 4 5 6 7 8 9 10
TIME (SEC)
1638/39 G07
Minimum Supply Voltage
400
300
200
100
0
– 100
– 200
– 300
TA = 25°C
TA = 125°C
TA = –55°C
– 400
0
1 234
TOTAL SUPPLY VOLTAGE (V)
5
1638/39 G02
Output Saturation Voltage vs
Load Current (Output Low)
1
VS = ±2.5V
VOD = 30mV
0.1 TA = 125°C
TA = 25°C
0.01
TA = –55°C
0.001
0.001
0.01 0.1
1
SINKING LOAD CURRENT (mA)
10
1638/39 G05
Noise Voltage Density vs
Frequency
70
60
50
40
30
20
10
0
1 10 100 1k
FREQUENCY (Hz)
1638/39 G09
LT1638/LT1639
Input Bias Current vs
Common Mode Voltage
10000
VS = 5V, 0V
8000
6000
60
40
20
0
–20
–40
4.0
TA = –55°C
TA = 125°C
TA = 25°C
4.4 4.8 5.2 5.6
COMMON MODE VOLTAGE (V)
44
1638/39 G03
Output Saturation Voltage vs
Input Overdrive
100
VS = ±2.5V
NO LOAD
OUTPUT HIGH
10
OUTPUT LOW
1
0 10 20 30 40 50 60 70 80 90 100
INPUT OVERDRIVE (mV)
1638/39 G06
Input Noise Current Density
vs Frequency
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
1 10 100 1k
FREQUENCY (Hz)
1638/39 G08
5
5 Page 
LT1638/LT1639
PACKAGE DESCRIPTION Dimensions in inches (millimeters) unless otherwise noted.
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)
+0.035
0.325 –0.015
( )8.255
+0.889
–0.381
0.065
(1.651)
TYP
0.100 ± 0.010
(2.540 ± 0.254)
0.125
(3.175)
MIN
0.018 ± 0.003
(0.457 ± 0.076)
0.020
(0.508)
MIN
*THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS.
MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.010 INCH (0.254mm)
0.255 ± 0.015*
(6.477 ± 0.381)
12
34
N8 1197
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)
*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)
TYP
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 0996
0.300 – 0.325
(7.620 – 8.255)
0.009 – 0.015
(0.229 – 0.381)
+0.035
0.325 –0.015
( )8.255
+0.889
–0.381
0.130 ± 0.005
(3.302 ± 0.127)
0.020
(0.508)
MIN
0.125
(3.175)
MIN
N Package
14-Lead PDIP (Narrow 0.300)
(LTC DWG # 05-08-1510)
0.045 – 0.065
(1.143 – 1.651)
0.770*
(19.558)
MAX
14 13 12 11 10
9
8
0.005
(0.125)
MIN
0.100 ± 0.010
(2.540 ± 0.254)
0.065
(1.651)
TYP
0.255 ± 0.015*
(6.477 ± 0.381)
0.018 ± 0.003
(0.457 ± 0.076)
1 234 56 7
N14 1197
*THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS.
MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.010 INCH (0.254mm)
0.010
(0.254
–
–
0.020
0.508)
×
45°
0.008 – 0.010
(0.203 – 0.254)
S Package
14-Lead Plastic Small Outline (Narrow 0.150)
(LTC DWG # 05-08-1610)
0.337 – 0.344*
(8.560 – 8.738)
0.053 – 0.069
(1.346 – 1.752)
0.004 – 0.010
(0.101 – 0.254)
14 13 12 11 10
9
0° – 8° TYP
0.228 – 0.244
0.016 – 0.050
0.406 – 1.270
0.014 – 0.019
(0.355 – 0.483)
0.050
(1.270)
TYP
*DIMENSION DOES NOT INCLUDE MOLD FLASH. MOLD FLASH SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE
(5.791 – 6.197)
**DIMENSION DOES NOT INCLUDE INTERLEAD FLASH. INTERLEAD FLASH SHALL NOT EXCEED 0.010" (0.254mm) PER SIDE
123456
8
0.150 – 0.157**
(3.810 – 3.988)
S14 0695
7
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 LT1638CS8.PDF ] | |
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