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PDF LT1634BCS8-2.5 Data sheet ( Hoja de datos )
| Número de pieza | LT1634BCS8-2.5 | |
| Descripción | Micropower Precision Shunt Voltage Reference | |
| Fabricantes | Linear Technology | |
| Logotipo |  |
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LT1634
Micropower Precision
Shunt Voltage Reference
FEATURES
s Initial Voltage Accuracy: 0.05%
s Low Operating Current: 10µA
s Low Drift: 10ppm/°C Max
s Less Than 1Ω Dynamic Impedance
s Available in 1.25V, 2.5V, 4.096V and 5V in SO-8
and TO-92 Packages
s 1.25V and 2.5V Available in MSOP Package
s Both Commercial and Industrial Temperature Range
Parts Are Available
U
APPLICATIONS
s Portable Meters
s Precision Regulators
s A/D and D/A Converters
s Calibrators
DESCRIPTION
The LT®1634 is a micropower, precision, shunt voltage
reference. The bandgap reference uses trimmed precision
thin film resistors to achieve 0.05% initial voltage accu-
racy. Improved curvature correction technique guaran-
tees 10ppm/°C maximum temperature drift. Advances in
design, processing and packaging techniques guarantee
10µA operation and low temperature cycling hysteresis.
The LT1634 does not require an output compensation
capacitor, but is stable with capacitive loads. Low dynamic
impedance makes the LT1634 reference easy to use from
unregulated supplies.
The LT1634 reference can be used as a high performance
upgrade to the LM185/LM385, LT1004 and LT1034
where lower power and guaranteed temperature drift is
required.
, LTC and LT are registered trademarks of Linear Technology Corporation.
TYPICAL APPLICATION
Super Accurate ±4.096V Output References
5V
45k
+
LT1634-4.096
LT1495
–
– 5V
5V
4
5 LTC®1043 6
VOUT
4.096V
IS = 200µA
OUTPUT ACCURACY
BETTER THAN 0.075%
AT ±500µA OUTPUT
15
1µF
17
– 5V
18
5V
–
LT1495
+
1µF
– 5V
VOUT
– 4.096V
1634 TA01
Temperature Drift
2.0
IR = 10µA
1.5 VOUT = 1.25V
1.0
0.5
0
– 0.5
– 1.0
– 1.5
– 2.0
– 40 –20
0 20 40 60
TEMPERATURE (°C)
80 100
1634 TA02
1
1 page  
LT1634
4.096V ELECTRICAL CHARACTERISTICS (Note 2)
PARAMETER
Temperature Coefficient
Reverse Dynamic Impedance (Note 4)
CONDITIONS
LT1634A, IR = 20µA
LT1634B, IR = 20µA
20µA ≤ IR ≤ 2mA
Low Frequency Noise (Note 5)
Hysteresis (Note 6)
IR = 20µA, 0.1Hz ≤ f ≤ 10Hz
∆T = – 40°C to 85°C
∆T = 0°C to 70°C
MIN
q
q
q
TYP MAX
UNITS
4 10 ppm/°C
10 25 ppm/°C
0.15 0.75
0.20 1.50
Ω
Ω
30 µVP-P
160 ppm
40 ppm
5V ELECTRICAL CHARACTERISTICS (Note 2)
PARAMETER
Reverse Breakdown Voltage
CONDITIONS
LT1634ACS8/LT1634BCS8/
LT1634AIS8/LT1634BIS8 (IR = 20µA)
LT1634CCZ (IR = 20µA)
LT1634ACS8 (IR = 20µA)
LT1634AIS8 (IR = 20µA)
LT1634BCS8 (IR = 20µA)
LT1634BIS8 (IR = 20µA)
LT1634CCZ (IR = 20µA)
Reverse Breakdown Change
with Current (Note 3)
20µA ≤ IR ≤ 2mA
2mA ≤ IR ≤ 20mA
Minimum Operating Current
Temperature Coefficient
Reverse Dynamic Impedance (Note 4)
LT1634A, IR = 20µA
LT1634B, IR = 20µA
20µA ≤ IR ≤ 2mA
Low Frequency Noise (Note 5)
Hysteresis (Note 6)
IR = 20µA, 0.1Hz ≤ f ≤ 10Hz
∆T = – 40°C to 85°C
∆T = 0°C to 70°C
MIN
4.99750
– 0.05
4.99000
– 0.20
q 4.99400
– 0.12
q 4.99125
– 0.175
q 4.98875
– 0.225
q 498188
– 0.362
q 4.98126
– 0.375
q
q
q
q
q
q
TYP
5.000
5.000
5.000
5.000
5.000
5.000
5.000
0.3
0.4
2
2
4
10
0.15
0.20
35
160
40
MAX
5.00250
0.05
5.01000
0.20
5.00600
0.12
5.00875
0.175
5.01125
0.225
5.01813
0.362
5.01876
0.375
1.5
3.0
8
10
15
10
25
0.75
1.50
UNITS
V
%
V
%
V
%
V
%
V
%
V
%
V
%
mV
mV
mV
mV
µA
ppm/°C
ppm/°C
Ω
Ω
µVP-P
ppm
ppm
The q denotes specifications which apply over the full operating
temperature range.
Note 1: If the part is stored outside of the specific operating temperature
range, the output may shift due to hysteresis.
Note 2: ESD (Electrostatic Discharge) sensitive device. Use proper ESD
handling precautions.
Note 3: Output requires 0.1µF for operating current greater than 1mA.
Note 4: This parameter is guaranteed by “reverse breakdown change with
current” test.
Note 5: Peak-to-peak noise is measured with a single highpass filter at
0.1Hz and 2-pole lowpass filter at 10Hz.
Note 6: Hysteresis in output voltage is created by package stress that
differs depending on whether the IC was previously at a higher or lower
temperature. Output voltage is always measured at 25°C but the IC is
cycled to 85°C or – 40°C before successive measurements. Hysteresis is
roughly proportional to the square of the temperature change. Hysteresis
is not normally a problem for operational temperature excursions where
the instrument might be stored at high or low temperature.
5
5 Page 
LT1634
PACKAGE DESCRIPTION Dimensions in inches (millimeters) unless otherwise noted.
MS8 Package
8-Lead Plastic MSOP
(LTC DWG # 05-08-1660)
0.118 ± 0.004*
(3.00 ± 0.102)
0.007
(0.18)
0° – 6° TYP
0.040 ± 0.006
(1.02 ± 0.15)
0.021 ± 0.006
(0.53 ± 0.015)
SEATING
PLANE
0.012
(0.30)
REF
0.0256
(0.65)
TYP
0.034 ± 0.004
(0.86 ± 0.102)
0.006 ± 0.004
(0.15 ± 0.102)
0.192 ± 0.004
(4.88 ± 0.10)
* DIMENSION DOES NOT INCLUDE MOLD FLASH, PROTRUSIONS OR GATE BURRS. MOLD FLASH,
PROTRUSIONS OR GATE BURRS SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE
** DIMENSION DOES NOT INCLUDE INTERLEAD FLASH OR PROTRUSIONS.
INTERLEAD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE
8 76 5
0.118 ± 0.004**
(3.00 ± 0.102)
MSOP (MS8) 1197
1 234
S8 Package
8-Lead Plastic Small Outline (Narrow 0.150)
(LTC DWG # 05-08-1610)
0.010
(0.254
–
–
0.020
0.508)
×
45°
0.008 – 0.010
(0.203 – 0.254)
0.053 – 0.069
(1.346 – 1.752)
0°– 8° TYP
0.016 – 0.050
0.406 – 1.270
0.014 – 0.019
(0.355 – 0.483)
*DIMENSION DOES NOT INCLUDE MOLD FLASH. MOLD FLASH
SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE
**DIMENSION DOES NOT INCLUDE INTERLEAD FLASH. INTERLEAD
FLASH SHALL NOT EXCEED 0.010" (0.254mm) PER SIDE
0.004 – 0.010
(0.101 – 0.254)
0.050
(1.270)
TYP
0.228 – 0.244
(5.791 – 6.197)
0.189 – 0.197*
(4.801 – 5.004)
8 765
1 2 34
0.150 – 0.157**
(3.810 – 3.988)
SO8 0996
0.060 ± 0.005
(1.524± 0.127)
DIA
0.180 ± 0.005
(4.572 ± 0.127)
0.500
(12.70)
MIN
Z Package
3-Lead Plastic TO-92 (Similar to TO-226)
(LTC DWG # 05-08-1410)
0.180 ± 0.005
(4.572 ± 0.127)
0.90
(2.286)
NOM
0.050 UNCONTROLLED
(1.270) LEAD DIMENSION
MAX
5°
NOM
0.060 ± 0.010
(1.524 ± 0.254)
10° NOM
0.140 ± 0.010
(3.556 ± 0.127)
Z3 (TO-92) 0695
0.050 ± 0.005
(1.270 ± 0.127)
0.016 ± 0.003
(0.406 ± 0.076)
0.015 ± 0.002
(0.381 ± 0.051)
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 LT1634BCS8-2.5.PDF ] | |
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