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PDF LT1784 Data sheet ( Hoja de datos )
| Número de pieza | LT1784 | |
| Descripción | Over-The-Top Low Power / Rail-to-Rail Input and Output Op Amp in SOT-23 | |
| Fabricantes | Linear Technology | |
| Logotipo |  |
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LT1784
2.5MHz, Over-The-Top
Low Power, 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 Low Profile (1mm) ThinSOTTM Package
s Gain Bandwidth Product: 2.5MHz
s Slew Rate: 2.1V/µs
s Low Input Offset Voltage: 3.5mV Max
s High Voltage Gain: 1000V/mV
s Single Supply Input Range: 0V to 18V
s Specified on 3V, 5V and ±5V Supplies
s Reverse Battery Protection to 18V
s Low Power: 750µA Supply Current Max
s Output Shutdown on 6-Lead Version
s High Output Current: 15mA Min
s
Operating
Temperature
U
Range:
–
40°C
to
85°C
APPLICATIO S
s Portable Instrumentation
s Battery-Powered Systems
s Sensor Conditioning
s Supply Current Sensing
s MUX Amplifiers
s 4mA to 20mA Transmitters
DESCRIPTIO
The LT®1784 is a 2.5MHz 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 750µA of quiescent current and has
reverse battery protection, drawing negligible current for
reverse supply voltages up to 18V.
The input range of the LT1784 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 LT1784 can drive loads up to 15mA 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
LT1784 op amp is available in the 5- and 6-lead
SOT-23 packages. For applications requiring lower power,
refer to the LT1782 and LT1783 data sheets.
, LTC and LT are registered trademarks of Linear Technology Corporation.
Over-The-Top and ThinSOT are trademarks of Linear Technology Corporation.
TYPICAL APPLICATIO
Programmable Gain, AV = 2, AV = 20, 100kHz Amplifier
VCC
AV = 20
AV = 2
IN
R2
9.09k
R3
1k
SHDN
VCC
+
LT1782
–
VEE
R1
10k
SHDN
VCC
+
LT1784
–
VEE
OUT
( )R1 + R2
AV = 1+
R3
( )R1
OR 1+
R2 + R3
1784 TA01
DataSheet4 U .com
Programmable Gain Amplifier
Frequency Response
30
25
20
15
10
5
0
–5
–10
–15
–20
1k
AV = 20
AV = 2
10k 100k 1M
FREQUENCY (Hz)
10M
1784 TA01a
1
1 page  
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LT1784
ELECTRICAL CHARACTERISTICS
The q denotes
VS = ±5V, VCM
specifications which apply over the specified temperature range, otherwise specifications are
= 0V,VOUT = 0V, for the 6-lead part VPIN5 = V –, pulse power tested unless otherwise specified.
TA
=
25°C.
SYMBOL PARAMETER
CONDITIONS
MIN TYP MAX
UNITS
SR Slew Rate
FPBW
tS
Full-Power Bandwidth (Note 9)
Settling Time
AV = –1, RL = ∞, VO = ±4V, Measured at VO = ±2V
1.3 2.2
0°C ≤ TA ≤ 70°C
q 1.2
–40°C ≤ TA ≤ 85°C
q 1.1
VOUT = 8VP-P
94
VS = 5V, ∆VOUT = 4V to 0.1%, AV = 1
3.4
V/µs
V/µs
V/µs
kHz
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: VS = 5V limits are guaranteed by correlation to VS = 3V and
VS = ±5V or VS = ±9V tests.
Note 4: VS = 3V limits are guaranteed by correlation to VS = 5V and
VS = ±5V or VS = ±9V tests.
Note 5: Guaranteed by correlation to slew rate at VS = ±5V, and GBW at
VS = 5V and VS = ±5V tests.
Note 6: This specification implies a typical input offset voltage of 5.7mV at
VCM = 18V and a maximum input offset voltage of 18mV at VCM = 18V.
Note 7: This parameter is not 100% tested.
Note 8: Specifications apply to 6-lead SOT-23 with shutdown.
Note 9: Full-power bandwidth is calculated from the slew rate.
FPBW = SR/2πVP.
Note 10: The LT1784C is guaranteed functional over the operating
temperature range – 40°C to 85°C.
Note 11: The LT1784C is guaranteed to meet specified performance from
0°C to 70°C. The LT1784C 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. LT1784I is guaranteed to meet specified
performance from – 40°C to 85°C.
TYPICAL PERFOR A CE CHARACTERISTICS
Supply Current vs Supply Voltage
700
650
600 TA = 125°C
550 TA = 25°C
500
450 TA = –55°C
400
350
300
2 4 6 8 10 12 14 16 18
SUPPLY VOLTAGE (V)
1784 G01
Minimum Supply Voltage
400
300
200
100
TA = 125°C
0
–100
TA = –55°C
TA = 25°C
–200
–300
–400
1
23 4
TOTAL SUPPLY VOLTAGE (V)
5
1784 G02
Output Voltage vs Large Input
Voltage
5
VS = 5V, 0V
4
3
2 5V
VIN +
1–
0
–10 –6 –2
26
VIN (V)
10 14 18
1784 G03
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LT1784
PACKAGE DESCRIPTIO
S5 Package
5-Lead Plastic SOT-23
(Reference LTC DWG # 05-08-1633)
(Reference LTC DWG # 05-08-1635)
2.80 – 3.10
(.110 – .118)
(NOTE 3)
SOT-23
(Original)
A
.90 – 1.45
(.035 – .057)
.00 – .15
A1 (.00 – .006)
A2
.90 – 1.30
(.035 – .051)
L
.35 – .55
(.014 – .021)
SOT-23
(ThinSOT)
1.00 MAX
(.039 MAX)
.01 – .10
(.0004 – .004)
.80 – .90
(.031 – .035)
.30 – .50 REF
(.012 – .019 REF)
.20
(.008)
DATUM ‘A’
L
2.60 – 3.00
(.102 – .118)
1.50 – 1.75
(.059 – .069)
(NOTE 3)
PIN ONE
.95
(.037)
REF
A A2
.09 – .20
(.004 – .008)
(NOTE 2)
1.90
(.074)
REF
.25 – .50
(.010 – .020)
(5PLCS, NOTE 2)
A1
S5 SOT-23 0401
NOTE:
1. CONTROLLING DIMENSION: MILLIMETERS
2.
DIMENSIONS
ARE
IN
MILLIMETERS
(INCHES)
3. DRAWING NOT TO SCALE
4. DIMENSIONS ARE INCLUSIVE OF PLATING
5. DIMENSIONS ARE EXCLUSIVE OF MOLD FLASH AND METAL BURR
6. MOLD FLASH SHALL NOT EXCEED .254mm
7. PACKAGE EIAJ REFERENCE IS:
SC-74A (EIAJ) FOR ORIGINAL
JEDEC MO-193 FOR THIN
SOT-23
(Original)
A
.90 – 1.45
(.035 – .057)
.00 – 0.15
A1 (.00 – .006)
A2
.90 – 1.30
(.035 – .051)
L
.35 – .55
(.014 – .021)
SOT-23
(ThinSOT)
1.00 MAX
(.039 MAX)
.01 – .10
(.0004 – .004)
.80 – .90
(.031 – .035)
.30 – .50 REF
(.012 – .019 REF)
S6 Package
6-Lead Plastic SOT-23
(Reference LTC DWG # 05-08-1634)
(Reference LTC DWG # 05-08-1636)
2.80 – 3.10
(.110 – .118)
(NOTE 3)
2.60 – 3.00
(.102 – .118)
1.50 – 1.75
(.059 – .069)
(NOTE 3)
PIN ONE ID
.20
(.008)
DATUM ‘A’
L
DataSheet4 U .com
.95
(.037)
REF
A A2
.09 – .20
(.004 – .008)
(NOTE 2)
1.90
(.074)
REF
.25 – .50
(.010 – .020)
(6PLCS, NOTE 2)
A1
S6 SOT-23 0401
NOTE:
1. CONTROLLING DIMENSION: MILLIMETERS
2.
DIMENSIONS
ARE
IN
MILLIMETERS
(INCHES)
3. DRAWING NOT TO SCALE
4. DIMENSIONS ARE INCLUSIVE OF PLATING
5. DIMENSIONS ARE EXCLUSIVE OF MOLD FLASH AND METAL BURR
6. MOLD FLASH SHALL NOT EXCEED .254mm
7. PACKAGE EIAJ REFERENCE IS:
SC-74A (EIAJ) FOR ORIGINAL
JEDEC MO-193 FOR THIN
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 LT1784.PDF ] | |
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