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PDF LT1782 Data sheet ( Hoja de datos )
| Número de pieza | LT1782 | |
| Descripción | Micropower/ Over-The-Top SOT-23/ Rail-to-Rail Input and Output Op Amp | |
| Fabricantes | Linear Technology | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de LT1782 (archivo pdf) en la parte inferior de esta página. Total 12 Páginas | ||
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FEATURES
s Operates with Inputs Above V+
s Rail-to-Rail Input and Output
s Micropower: 55µA Supply Current Max
s Small SOT-23 Package
s Low Input Offset Voltage: 800µV Max
s Single Supply Input Range: 0V to 18V
s High Output Current: 18mA Min
s Specified on 3V, 5V and ±5V Supplies
s Output Shutdown on 6-Lead Version
s Reverse Battery Protection to 18V
s High Voltage Gain: 1500V/mV
s Gain Bandwidth Product: 200kHz
s Slew Rate: 0.07V/µs
s Operating Temperature Range: –40°C to 85°C
U
APPLICATIO S
s Portable Instrumentation
s Battery- or Solar-Powered Systems
s Sensor Conditioning
s Supply Current Sensing
s Battery Monitoring
s MUX Amplifiers
s 4mA to 20mA Transmitters
TYPICAL APPLICATIO
Positive Supply Rail Current Sense
V+
5V TO 18V
200Ω
5V
0.2Ω
200Ω
+
LT1782
–
LOAD ILOAD
2N3904
VOUT = 2Ω(ILOAD)
0V TO 4.3V
2k
1782 TA01
LT1782
Micropower, Over-The-Top
SOT-23, Rail-to-Rail
Input and Output Op Amp
DESCRIPTIO
The LT®1782 is a 200kHz op amp available in the small
SOT-23 package that operates on all single and split
supplies with a total voltage of 2.5V to 18V. The amplifier
draws less than 55µA of quiescent current and has reverse
battery protection, drawing negligible current for reverse
supply voltages up to 18V.
The input range of the LT1782 includes ground, and a
unique feature of this device is its Over-The-TopTM opera-
tion capability with either or both of its inputs above the
positive rail. The inputs handle 18V 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 9V
below the negative supply.
The LT1782 can drive loads up to 18mA and still maintain
rail-to-rail capability. A shutdown feature on the 6-lead
version can disable the part, making the output high
impedance and reducing quiescent current to 5µA. The
LT1782 op amp is available in the 5- and 6-lead
SOT-23 packages. For applications requiring higher speed,
refer to the LT1783.
, LTC and LT are registered trademarks of Linear Technology Corporation.
Over-The-Top is a trademark of Linear Technology Corporation.
Distribution of Input Offset Voltage
25
VS = 5V, 0V
VCM = 2.5V
20
15
10
5
0
–900
–600 –300 0 300 600 900
INPUT OFFSET VOLTAGE (µV)
1782 TA01a
1
1 page  
LT1782
TYPICAL PERFOR A CE CHARACTERISTICS
Supply Current vs Supply Voltage
50
TA = 125°C
45
40
TA = 25°C
35 TA = –55°C
30
25
20
2 4 6 8 10 12 14 16 18
SUPPLY VOLTAGE (V)
1782 G01
Input Bias Current vs Common
Mode Voltage
6000
5000
4000
3000
2000
1000
VS = 5V, 0V
TA = 125°C
TA = 25°C
40
30 TA = –55°C
20
10
0
–10
3.8 4 4.2 4.4 4.6 4.8 5 5.2 5.4 15 16 18
COMMON MODE VOLTAGE (V)
1782 G03
Output Saturation Voltage vs
Input Overdrive
100
OUTPUT HIGH
10
OUTPUT LOW
VS = ±2.5V
NO LOAD
1
0 10 20 30 40 50
INPUT OVERDRIVE (mV)
60
1782 G06
Minimum Supply Voltage
400
300
200
100
0
–100
–200
–300
TA = 125°C
TA = –55°C
TA = 25°C
–400
0
1234
TOTAL SUPPLY VOLTAGE (V)
5
1782 G02
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
1µ
10µ 100µ 1m
SOURCING LOAD CURRENT (A)
10m
1782 G04
Output Short-Circuit Current vs
Temperature
40
VS = ±5V
35
SINKING CURRENT
30
SOURCING CURRENT
25
20
15
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
1782 G06a
Output Voltage vs Large Input
Voltage
5
VS = 5V, 0V
4
3
2 5V
VIN +
1–
0
–10–8 –6 –4 –2 0 2 4 6 8 10 12 14 16 18
VIN (V)
1782 G02a
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
1µ
10µ 1µ
1m
SINKING LOAD CURRENT (A)
10m
1782 G05
0.1Hz to 10Hz Noise Voltage
VS = ±2.5V
0 1 2 3 4 5 6 7 8 9 10
TIME (sec)
1782 G07
5
5 Page 
PACKAGE DESCRIPTIO Dimensions in inches (millimeters) unless otherwise noted.
LT1782
S6 Package
6-Lead Plastic SOT-23
(LTC DWG # 05-08-1634)
2.80 – 3.00
(0.110 – 0.118)
(NOTE 3)
2.6 – 3.0
(0.110 – 0.118)
1.50 – 1.75
(0.059 – 0.069)
PIN 1
1.90
(0.074)
REF
0.00 – 0.15
(0.00 – 0.006)
0.95
(0.037)
REF
0.90 – 1.45
(0.035 – 0.057)
0.35 – 0.55
(0.014 – 0.022)
0.09 – 0.20
0.35 – 0.50
(0.004 – 0.008)
(0.014 – 0.020)
(NOTE 2)
SIX PLACES (NOTE 2)
NOTE:
1. DIMENSIONS ARE IN MILLIMETERS
2. DIMENSIONS ARE INCLUSIVE OF PLATING
3. DIMENSIONS ARE EXCLUSIVE OF MOLD FLASH AND METAL BURR
4. MOLD FLASH SHALL NOT EXCEED 0.254mm
5. PACKAGE EIAJ REFERENCE IS SC-74A (EIAJ)
0.90 – 1.30
(0.035 – 0.051)
S6 SOT-23 0898
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 LT1782.PDF ] | |
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