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PDF LTC6652 Data sheet ( Hoja de datos )
| Número de pieza | LTC6652 | |
| Descripción | Precision Low Drift Low Noise Buffered Reference | |
| Fabricantes | Linear Technology | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de LTC6652 (archivo pdf) en la parte inferior de esta página. Total 20 Páginas | ||
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LTC6652
Precision Low Drift Low
Noise Buffered Reference
Features
nn Low Drift:
A-Grade 5ppm/°C Max
B-Grade 10ppm/°C Max (MSOP8)
B-Grade 8ppm/°C Max (LS8)
nn High Accuracy:
A-Grade ±0.05% Max
B-Grade ±0.1% Max
nn Low Noise: 2.1ppmP-P (0.1Hz to 10Hz)
nn 100% Tested at –40°C, 25°C and 125°C
nn Sinks and Sources Current: ±5mA
nn Low Power Shutdown: <2µA Maximum
nn Thermal Hysteresis (LS8): 45ppm (–40°C to 125°C)
nn Long-Term Drift (LS8): 20ppm/√kHr
nn Low Dropout: 300mV
nn Available Output Voltage Options: 1.25V, 2.048V, 2.5V,
3V, 3.3V, 4.096V, 5V
nn 8-Lead MSOP and 5mm × 5mm Surface Mount
Hermetic Packages
Applications
nn Automotive Control and Monitoring
nn High Temperature Industrial
nn High Resolution Data Acquisition Systems
nn Instrumentation and Process Control
nn Precision Regulators
nn Medical Equipment
Description
The LTC®6652 family of precision, low drift, low noise
references is fully specified over the temperature range
of –40°C to 125°C. High order curvature compensation
allows these references to achieve a low drift of less than
5ppm/°C with a predictable temperature characteristic and
an output voltage accuracy of ±0.05%. The performance
over temperature should appeal to automotive, high perfor-
mance industrial and other high temperature applications.
The LTC6652 voltage references can be powered from
supply voltages up to 13.2V. They boast low noise, ex-
cellent load regulation, source and sink capability and
exceptional line rejection, making them a superior choice
for demanding precision applications. A shutdown mode
allows power consumption to be reduced when the refer-
ence is not needed. The optional output capacitor can be
left off when space constraints are critical.
The LTC6652 references are offered in an 8-lead MSOP
package and an 8-lead LS8 package. The LS8 is a 5mm
× 5mm surface mount hermetic package that provides
outstanding stability.
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. All other trademarks are the property of their respective owners.
Typical Application
Basic Connection
2.8V ≤ VIN ≤ 13.2V
CIN
0.1µF
(OPTIONAL)
VIN LTC6652-2.5 VOUT
SHDN GND
VOUT
2.5V
COUT
1µF
(OPTIONAL)
6652 TA01a
Output Voltage Temperature Drift
0.050
0.025
0
–0.025
–0.050
–40 –20
0 20 40 60 80 100 125
TEMPERATURE (°C)
6652 TA01b
For more information www.linear.com/LTC6652
6652fg
1
1 page  
LTC6652
Typical Performance Characteristics Characteristic curves are similar for most
LTC6652s. Curves from the LTC6652-1.25, LTC6652-2.5 and the LTC6652-5 represent the extremes and typical of the voltage options.
Characteristic curves for other output voltages fall between these curves and can be estimated based on their output.
1.25V Output Voltage
Temperature Drift
1.2510
3 TYPICAL PARTS
1.2505
1.2500
1.2495
1.25V Line Regulation
1.2506
1.2504
1.2502
125°C
1.2500
1.2498
1.2496
25°C
–40°C
1.25V Load Regulation (Sourcing)
0
–40°C
–50
–100
–150
25°C
125°C
–200
1.2490
–80 –40
0
40 80 120 160
TEMPERATURE (°C)
6652 G17
1.25V Load Regulation (Sinking)
400
350
125°C
300
250
200 25°C
150
100
–40°C
50
0
0.1
1
OUTPUT CURRENT (mA)
10
6652 G20
1.25 Sinking Current Without
Output Capacitor
1.2494
0
2
4 6 8 10
INPUT VOLTAGE (V)
12 14
6652 G18
1.25V Low Frequency 0.1Hz to
10Hz Transient Noise
TIME (1 SECOND/DIV)
6652 G21
1.25 Sinking Current with Output
Capacitor
1mA
IOUT
0mA
1mA
IOUT
0mA
–250
0.1
1
OUTPUT CURRENT (mA)
10
6652 G19
1.25V Output Voltage Noise
Spectrum
400
300
200
100
0
0.01
0.1 1
FREQUENCY (kHz)
10
6652 G22
1.25V Stability with Output
Capacitance
10µF
1µF
0.1µF
VOUT
500mV/DIV
COUT = 0µF
500µs/DIV
VOUT
500mV/DIV
6652 G23
COUT = 1µF
500µs/DIV
10nF
1nF
6652 G24
100pF
NO CAP
For more information www.linear.com/LTC6652
REGION OF
MARGINAL
STABILITY
–5 –1 0
5
LOAD CURRENT (mA)
6652 G16
6652fg
5
5 Page 
Applications Information
3.5V
VIN 3V
VOUT
500mV/DIV
COUT = 0µF
500µs/DIV
6652 F02
Figure 2. Transient Response Without
Output Capacitor
LTC6652
5mA
IOUT
0mA
VOUT
200mV/DIV
COUT = 0µF
250µs/DIV
6652 F05
Figure 5. LTC6652-2.5 Sinking Current
Without Output Capacitor
3.5V
VIN 3V
VOUT
500mV/DIV
COUT = 1µF
500µs/DIV
6652 F03
Figure 3. Transient Response with 1µF
Output Capacitor
0mA
IOUT
–5mA
VOUT
200mV/DIV
COUT = 1µF
250µs/DIV
6652 F06
Figure 6. LTC6652-2.5 Sourcing Current
with Output Capacitor
0mA
IOUT
–5mA
VOUT
200mV/DIV
COUT = 0µF
250µs/DIV
6652 F04
Figure 4. LTC6652-2.5 Sourcing
Current Without Output Capacitor
5mA
IOUT
0mA
VOUT
50mV/DIV
COUT = 1µF
250µs/DIV
6652 F07
Figure 7. LTC6652-2.5 Sinking Current
with Output Capacitor
For more information www.linear.com/LTC6652
6652fg
11
11 Page | ||
| Páginas | Total 20 Páginas | |
| PDF Descargar | [ Datasheet LTC6652.PDF ] | |
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