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PDF LT1783 Data sheet ( Hoja de datos )
| Número de pieza | LT1783 | |
| Descripción | 1.25MHz/ Over-The-Top Micropower/ Rail-to-Rail Input and Output Op Amp in SOT-23 | |
| Fabricantes | Linear Technology | |
| Logotipo |  |
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LT1783
1.25MHz, Over-The-Top
Micropower, Rail-to-Rail
Input and Output Op Amp in SOT-23
FEATURES
s Operates with Inputs Above V+
s Rail-to-Rail Input and Output
s Micropower: 300µA Supply Current Max
s Small SOT-23 Package
s Gain Bandwidth product: 1.25MHz
s Slew Rate: 0.42V/µs
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 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
+
LT1783
–
LOAD ILOAD
2N3904
VOUT = 2Ω(ILOAD)
0V TO 4.3V
2k
1783 TA01
DESCRIPTIO
The LT®1783 is a 1.25MHz 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 300µA of quiescent current and has
reverse battery protection, drawing negligible current for
reverse supply voltages up to 18V.
The input range of the LT1783 includes ground, and a
unique feature of this device is its Over-The-TopTM opera-
tion capabilitity 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 LT1783 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
LT1783 op amp is available in the 5- and 6-lead
SOT-23 packages. For applications requiring lower power,
refer to the LT1782.
, 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 G25
1
1 page  
TYPICAL PERFOR A CE CHARACTERISTICS
LT1783
Supply Current vs Supply Voltage
300
280
260 TA = 125°C
240
TA = 25°C
220
200
180 TA = –55°C
160
140
120
2 4 6 8 10 12 14 16 18
SUPPLY VOLTAGE (V)
1783 G01
Input Bias Current vs Common
Mode Voltage
50000
40000
30000
20000
10000
250
200
150
TA = –55°C
100 TA = 25°C
50
0
TA = 125°C
–50
3.8 4 4.2 4.4 4.6 4.8 5 5.2 5.4 5.6 14 16 18
COMMON MODE VOLTAGE (V)
1783 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 60
INPUT OVERDRIVE (mV)
1783 G06
Minimum Supply Voltage
400
300
200
100
0
–100
TA = 125°C
TA = –55°C
–200
TA = 25°C
–300
–400
0
1234
TOTAL SUPPLY VOLTAGE (V)
5
1783 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
1783 G04
Output Short-Circuit Current vs
Temperature
55
VS = ±5V
50
45 SOURCING CURRENT
40 SINKING CURRENT
35
30
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
1783 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)
1783 G02a
Output Saturation Voltage vs Load
Current (Output Low)
1
VS = ±2.5V
VOD = 30mV
TA = 125°C
0.1
0.01 TA = 25°C
0.001
1µ
TA = –55°C
10µ 100µ
1m
SINKING LOAD CURRENT (A)
10m
1783 G05
0.1Hz to 10Hz Noise Voltage
VS = ±2.5V
0 1 2 3 4 5 6 7 8 9 10
TIME (sec)
1783 G07
5
5 Page 
PACKAGE DESCRIPTIO Dimensions in inches (millimeters) unless otherwise noted.
LT1783
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 LT1783.PDF ] | |
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