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PDF LT1355 Data sheet ( Hoja de datos )
| Número de pieza | LT1355 | |
| Descripción | Dual and Quad 12MHz/ 400V/us Op Amps | |
| Fabricantes | Linear Technology | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de LT1355 (archivo pdf) en la parte inferior de esta página. Total 16 Páginas | ||
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FEATURES
s 12MHz Gain Bandwidth
s 400V/µs Slew Rate
s 1.25mA Maximum Supply Current per Amplifier
s Unity-Gain Stable
s C-LoadTM Op Amp Drives All Capacitive Loads
s 10nV/√Hz Input Noise Voltage
s 800µV Maximum Input Offset Voltage
s 300nA Maximum Input Bias Current
s 70nA Maximum Input Offset Current
s 12V/mV Minimum DC Gain, RL=1k
s 230ns Settling Time to 0.1%, 10V Step
s 280ns Settling Time to 0.01%, 10V Step
s ±12.5V Minimum Output Swing into 500Ω
s ±3V Minimum Output Swing into 150Ω
s Specified at ±2.5V, ±5V, and ±15V
U
APPLICATIO S
s Wideband Amplifiers
s Buffers
s Active Filters
s Data Acquisition Systems
s Photodiode Amplifiers
LT1355/LT1356
Dual and Quad
12MHz, 400V/µs Op Amps
DESCRIPTIO
The LT1355/LT1356 are dual and quad low power high
speed operational amplifiers with outstanding AC and DC
performance. The amplifiers feature much lower supply
current and higher slew rate than devices with comparable
bandwidth. The circuit topology is a voltage feedback
amplifier with matched high impedance inputs and the
slewing performance of a current feedback amplifier. The
high slew rate and single stage design provide excellent
settling characteristics which make the circuit an ideal
choice for data acquisition systems. Each output drives a
500Ω load to ±12.5V with ±15V supplies and a 150Ω load
to ±3V on ±5V supplies. The amplifiers are stable with any
capacitive load making them useful in buffer applications.
The LT1355/LT1356 are members of a family of fast, high
performance amplifiers using this unique topology and
employing Linear Technology Corporation’s advanced
bipolar complementary processing. For a single amplifier
version of the LT1355/LT1356 see the LT1354 data sheet.
For higher bandwidth devices with higher supply currents
see the LT1357 through LT1365 data sheets. Bandwidths
of 25MHz, 50MHz, and 70MHz are available with 2mA,
4mA, and 6mA of supply current per amplifier. Singles,
duals, and quads of each amplifier are available.
, LTC and LT are registered trademarks of Linear Technology Corporation.
C-Load is a trademark of Linear Technology Corporation.
TYPICAL APPLICATIO
100kHz, 4th Order Butterworth Filter
6.81k
100pF
6.81k
VIN
11.3k
330pF
–
1/2
LT1355
+
5.23k
47pF
5.23k
10.2k
1000pF
–
1/2
LT1355
+
VOUT
1355/1356 TA01
AV = –1 Large-Signal Response
1355/1356 TA02
1
1 page  
LT1355/LT1356
ELECTRICAL CHARACTERISTICS The q denotes the specifications which apply over the temperature range
– 40°C ≤ TA ≤ 85°C, VCM = 0V unless otherwise noted. (Note 8)
SYMBOL PARAMETER
VOUT
Output Swing
IOUT Output Current
ISC Short-Circuit Current
SR Slew Rate
GBW Gain Bandwidth
Channel Separation
IS Supply Current
CONDITIONS
VOUT = ±2.5V, RL = 150Ω
VOUT = ±1V, RL = 500Ω
RL = 1k, VIN = ±40mV
RL = 500Ω, VIN = ±40mV
RL = 500Ω, VIN = ±40mV
RL = 150Ω, VIN = ±40mV
RL = 500Ω, VIN = ±40mV
VOUT = ±11.5V
VOUT = ± 2.6V
VOUT = 0V, VIN = ±3V
AV = – 2, (Note 4)
f = 200kHz, RL = 2k
VOUT = ±10V, RL = 500Ω
Each Amplifier
Each Amplifier
VSUPPLY
±5V
±2.5V
±15V
±15V
± 5V
± 5V
± 2.5V
±15V
± 5V
±15V
±15V
± 5V
±15V
±5V
±15V
±15V
±5V
MIN
q 0.4
q 1.7
q 13.0
q 11.5
q 3.4
q 2.6
q 1.2
q 23.0
q 17.3
q 23
q 120
q 50
q 7.0
q 5.5
q 98
q
q
TYP MAX
1.50
1.45
UNITS
V/mV
V/mV
±V
±V
±V
±V
±V
mA
mA
mA
V/µs
V/µs
MHz
MHz
dB
mA
mA
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: Differential inputs of ±10V are appropriate for transient operation
only, such as during slewing. Large, sustained differential inputs will cause
excessive power dissipation and may damage the part. See Input
Considerations in the Applications Information section of this data sheet
for more details.
Note 3: A heat sink may be required to keep the junction temperature
below absolute maximum when the output is shorted indefinitely.
Note 4: Slew rate is measured between ±10V on the output with ±6V input
for ±15V supplies and ±1V on the output with ±1.75V input for ±5V
supplies.
Note 5: Full power bandwidth is calculated from the slew rate
measurement: FPBW = (SR)/2πVP.
Note 6: This parameter is not 100% tested.
Note 7: The LT1355C/LT1356C are guaranteed functional over the
operating temperature range of –40°C to 85°C.
Note 8: The LT1355C/LT1356C are guaranteed to meet specified
performance from 0°C to 70°C. The LT1355C/LT1356C are designed,
characterized and expected to meet specified performance from – 40°C to
85°C, but are not tested or QA sampled at these temperatures. For
guaranteed I-grade parts, consult the factory.
TYPICAL PERFORMANCE CHARACTERISTICS
Supply Current vs Supply Voltage
and Temperature
1.4
1.2
125°C
1.0 25°C
0.8
– 55°C
0.6
0.4
0
5 10 15
SUPPLY VOLTAGE (±V)
20
1355/1356 G01
Input Common Mode Range vs
Supply Voltage
V+
– 0.5
TA = 25°C
∆VOS < 1mV
–1.0
–1.5
–2.0
2.0
1.5
1.0
0.5
V–
0
5 10 15
SUPPLY VOLTAGE (±V)
20
1355/1356 G02
Input Bias Current vs
Input Common Mode Voltage
200
VS = ±15V
150
TA =
IB =
25°C
—IB+—+—IB—–
2
100
50
0
–50
–15 –10 –5
0
5 10 15
INPUT COMMON MODE VOLTAGE (V)
1355/1356 G03
5
5 Page 
LT1355/LT1356
APPLICATIONS INFORMATION
Power Dissipation
The LT1355/LT1356 combine high speed and large output
drive in small packages. Because of the wide supply
voltage range, it is possible to exceed the maximum
junction temperature under certain conditions. Maximum
junction temperature (TJ) is calculated from the ambient
temperature (TA) and power dissipation (PD) as follows:
LT1355CN8: TJ = TA + (PD x 130°C/W)
LT1355CS8: TJ = TA + (PD x 190°C/W)
LT1356CN: TJ = TA + (PD x 110°C/W)
LT1356CS: TJ = TA + (PD x 150°C/W)
Worst case power dissipation occurs at the maximum
supply current and when the output voltage is at 1/2 of
either supply voltage (or the maximum swing if less than
1/2 supply voltage). For each amplifier PDMAX is:
PDMAX = (V+ – V–)(ISMAX) + (V+/2)2/RL
Example: LT1356 in S16 at 70°C, VS = ±15V, RL = 1k
PDMAX = (30V)(1.45mA) + (7.5V)2/1kW = 99.8mW
TJMAX = 70°C + (4 × 99.8mW)(150°C/W) = 130°C
WW
SI PLIFIED SCHE ATIC
V+
R1
800Ω
+IN RC
–IN
OUT
C CC
V–
1355/1356 SS01
11
11 Page | ||
| Páginas | Total 16 Páginas | |
| PDF Descargar | [ Datasheet LT1355.PDF ] | |
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