LT1634BCMS8-2.5#PBF [Linear]
LT1634 - Micropower Precision Shunt Voltage Reference; Package: MSOP; Pins: 8; Temperature Range: 0°C to 70°C;
| 型号： | LT1634BCMS8-2.5#PBF |
| 厂家： | 
Linear |
| 描述： | LT1634 - Micropower Precision Shunt Voltage Reference; Package: MSOP; Pins: 8; Temperature Range: 0°C to 70°C 光电二极管 |
| 文件： | 总14页 (文件大小：1287K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
LT1634
Micropower Precision
Shunt Voltage Reference
FeaTures
DescripTion
The LT®1634 is a micropower, precision, shunt voltage
reference. Thebandgapreferenceusestrimmedprecision
thin film resistors to achieve 0.05% initial voltage accura-
cy. Improved curvature correction technique guarantees
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,butisstablewithcapacitiveloads.Lowdynamic
impedance makes the LT1634 reference easy to use from
unregulated supplies.
n
Iꢃitial 6oltage Accuracy: .4.5%
n
Low ꢀperatiꢃg Curreꢃt: 1.µA
n
Low Driꢂt: 1.ppm/°C Max
Less Than 1Ω Dynamic Impedance
n
n
Both Commercial and Industrial Temperature Range
Parts Are Available
n
Available in 1.25V, 2.5V, 4.096V and 5V in SO-8
and TO-92 Packages
n
1.25V and 2.5V Available in MSOP Package
applicaTions
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.
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.
n
Portable Meters
n
Precision Regulators
n
A/D and D/A Converters
Calibrators
n
Typical applicaTion
Super Accurate ±±4.096 ꢀutput ꢁeꢂereꢃceꢄ
Temperature Driꢂt
5V
45k
+
2.0
I
= 10µA
= 1.25V
R
OUT
V
OUT
4.096V
V
LT1495
LT1634-4.096
1.5
1.0
–
–5V
0.5
0
5V
4
LTC®1043
5
6
–0.5
–1.0
–1.5
I
= 200µA
S
OUTPUT ACCURACY
BETTER THAN 0.075%
AT 500µA OUTPUT
1µF
15
18
–2.0
17
–5V
–20
20
40
60
80
100
–40
0
TEMPERATURE (°C)
1634 TA02
5V
–
V
OUT
LT1495
–4.096V
+
1µF
–5V
1634 TA01
1634ff
1
For more information www.linear.com/LT1634
LT1634
(Note 1)
absoluTe MaxiMuM raTings
Current Operating
Operating Temperature Range
1.25V ...............................................................100mA
2.5V...................................................................50mA
4.096V, 5V .........................................................30mA
Forward Current.....................................................20mA
Commercial ............................................. 0°C to 70°C
Industrial .............................................–40°C to 85°C
Storage Temperature Range (Note 1)..... –65°C to 150°C
Lead Temperature (Soldering, 10 sec)...................300°C
pin conFiguraTion
BOTTOM VIEW
TOP VIEW
TOP VIEW
1
2
3
4
8
7
6
5
DNC*
DNC*
DNC*
GND
NC***
DNC*
DNC*
DNC*
DNC*
GND
1
2
3
4
8 NC***
7 DNC*
TEST** V
GND
OUT
6 V
OUT
V
OUT
5 TEST**
TEST**
MS8 PACKAGE
8-LEAD PLASTIC MSOP
Z PACKAGE
3-LEAD PLASTIC TO-92
S8 PACKAGE
T
= 125°C, θ = 250°C/W
JMAX
JA
8-LEAD PLASTIC SO
T
= 125°C, θ = 190°C/W
T
= 125°C, θ = 190°C/W
JMAX
JA
JMAX
JA
*Connected internally. Do Not Connect external circuitry to these pins.
**The TEST pin can be left unconnected or connected to the GND pin (GND pin on Z package, Pin4 on MS8 and S8 packages)
*** Not connected internally.
orDer inForMaTion
LEAD FꢁEE FINISH
TAPE AND ꢁEEL
PAꢁT MAꢁKING
LTCV
LTDF
PACKAGE DESCꢁIPTIꢀN
8-Lead Plastic MSOP
8-Lead Plastic MSOP
8-Lead Plastic SO
8-Lead Plastic SO
8-Lead Plastic SO
8-Lead Plastic SO
8-Lead Plastic SO
8-Lead Plastic SO
8-Lead Plastic SO
8-Lead Plastic SO
8-Lead Plastic SO
8-Lead Plastic SO
8-Lead Plastic SO
8-Lead Plastic SO
8-Lead Plastic SO
8-Lead Plastic SO
8-Lead Plastic SO
8-Lead Plastic SO
3-Lead Plastic TO-92
3-Lead Plastic TO-92
3-Lead Plastic TO-92
3-Lead Plastic TO-92
SPECIFIED TEMPEꢁATUꢁE ꢁANGE
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
LT1634BCMS8-1.25#PBF
LT1634BCMS8-2.5#PBF
LT1634ACS8-1.25#PBF
LT1634ACS8-2.5#PBF
LT1634ACS8-4.096#PBF
LT1634ACS8-5#PBF
LT1634AIS8-1.25#PBF
LT1634AIS8-2.5#PBF
LT1634AIS8-4.096#PBF
LT1634AIS8-5#PBF
LT1634BCMS8-1.25#TRPBF
LT1634BCMS8-2.5#TRPBF
LT1634ACS8-1.25#TRPBF
LT1634ACS8-2.5#TRPBF
LT1634ACS8-4.096#TRPBF
LT1634ACS8-5#TRPBF
LT1634AIS8-1.25#TRPBF
LT1634AIS8-2.5#TRPBF
LT1634AIS8-4.096#TRPBF
LT1634AIS8-5#TRPBF
1634A1
1634A2
1634A4
1634A5
634AI1
634AI2
634AI4
634AI5
1634B1
1634B2
1634B4
1634B5
634BI1
634BI2
634BI4
634BI5
0°C to 70°C
0°C to 70°C
–40°C to 85°C
–40°C to 85°C
–40°C to 85°C
–40°C to 85°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
–40°C to 85°C
–40°C to 85°C
–40°C to 85°C
–40°C to 85°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
LT1634BCS8-1.25#PBF
LT1634BCS8-2.5#PBF
LT1634BCS8-4.096#PBF
LT1634BCS8-5#PBF
LT1634BIS8-1.25#PBF
LT1634BIS8-2.5#PBF
LT1634BIS8-4.096#PBF
LT1634BIS8-5#PBF
LT1634BCS8-1.25#TRPBF
LT1634BCS8-2.5#TRPBF
LT1634BCS8-4.096#TRPBF
LT1634BCS8-5#TRPBF
LT1634BIS8-1.25#TRPBF
LT1634BIS8-2.5#TRPBF
LT1634BIS8-4.096#TRPBF
LT1634BIS8-5#TRPBF
LT1634CCZ-1.25#PBF
LT1634CCZ-2.5#PBF
LT1634CCZ-4.096#PBF
LT1634CCZ-5#PBF
LT1634CCZ-1.25#TRPBF
LT1634CCZ-2.5#TRPBF
LT1634CCZ-4.096#TRPBF
LT1634CCZ-5#TRPBF
Consult LTC Marketing for parts specified with wider operating temperature ranges.
Consult LTC Marketing for information on lead based finish parts.
For more information on lead free part marking, go to: http://www.linear.com/leadfree/
For more information on tape and reel specifications, go to: http://www.linear.com/tapeandreel/
1634ff
2
For more information www.linear.com/LT1634
LT1634
available opTions
PACKAGE TYPE
S8
TEMPEꢁATUꢁE CꢀEFFICIENT
(ppm/°C)
TEMPEꢁATUꢁE
ACCUꢁACY (%)
MS8
Z
0°C to 70°C
0.05
10
10
25
25
25
LT1634ACS8-1.25
LT1634ACS8-2.5
LT1634ACS8-4.096
LT1634ACS8-5
LT1634AIS8-1.25
LT1634AIS8-2.5
LT1634AIS8-4.096
LT1634AIS8-5
LT1634BCS8-1.25
LT1634BCS8-2.5
LT1634BCS8-4.096
LT1634BCS8-5
LT1634BIS8-1.25
LT1634BIS8-2.5
LT1634BIS8-4.096
LT1634BIS8-5
–40°C to 85°C
0°C to 70°C
0.05
0.05
0.05
0.20
LT1634BCMS8-1.25
LT1634BCMS8-2.5
–40°C to 85°C
0°C to 70°C
LT1634CCZ-1.25
LT1634CCZ-2.5
LT1634CCZ-4.096
LT1634CCZ-5
The l deꢃoteꢄ the ꢄpecificatioꢃꢄ which apply over the ꢂull
1.25v elecTrical characTerisTics
operatiꢃg temperature raꢃge, otherwiꢄe ꢄpecificatioꢃꢄ are at TA = 25°C4 (Note 3)
PAꢁAMETEꢁ
CꢀNDITIꢀNS
MIN
TYP
MAX
UNITS
Reverse Breakdown Voltage
LT1634ACS8/LT1634BCMS8/LT1634BCS8/
1.24937
–0.05
1.250
1.25062
0.05
V
%
LT1634AIS8/LT1634BIS8 (I = 10µA)
R
LT1634CCZ (I = 10µA)
1.24750
–0.20
1.24849
–0.12
1.24781
–0.175
1.24718
–0.225
1.24547
–0.362
1.24531
–0.375
1.250
1.250
1.250
1.250
1.250
1.250
1.25250
0.20
1.25149
0.12
1.25218
0.175
1.25281
0.225
1.25453
0.362
1.25469
0.375
V
R
%
l
l
l
l
l
LT1634ACS8 (I = 10µA)
V
%
V
%
V
%
V
%
R
LT1634AIS8 (I = 10µA)
R
LT1634BCS8/LT1634BCMS8 (I = 10µA)
R
LT1634BIS8 (I = 10µA)
R
LT1634CCZ (I = 10µA)
V
%
R
Reverse Breakdown Change
with Current (Note 4)
10µA ≤ I ≤ 2mA
0.25
0.30
1
2
mV
mV
R
l
2mA ≤ I ≤ 20mA
2
2
8
mV
mV
µA
R
l
l
10
Minimum Operating Current
7
l
l
Temperature Coefficient (Note 8)
LT1634A, I = 10µA
4
10
25
0.5
1.0
ppm/°C
ppm/°C
R
LT1634B/LT1634C, I = 10µA
10
R
Reverse Dynamic Impedance (Note 5) 10µA ≤ I ≤ 2mA
0.125
0.150
Ω
Ω
R
Low Frequency Noise (Note 6)
Hysteresis (Note 7)
I = 10µA, 0.1Hz ≤ f ≤ 10Hz
10
µV
P-P
R
∆T = –40°C to 85°C
∆T = 0°C to 70°C
160
40
ppm
ppm
1634ff
3
For more information www.linear.com/LT1634
LT1634
The l deꢃoteꢄ the ꢄpecificatioꢃꢄ which apply over the ꢂull
2.5v elecTrical characTerisTics
operatiꢃg temperature raꢃge, otherwiꢄe ꢄpecificatioꢃꢄ are at TA = 25°C4 (Note 3)
PAꢁAMETEꢁ
CꢀNDITIꢀNS
MIN
TYP
MAX
UNITS
Reverse Breakdown Voltage
LT1634ACS8/LT1634BCMS8/LT1634BCS8/
2.49875
–0.05
2.500
2.50125
0.05
V
%
LT1634AIS8/LT1634BIS8 (I = 10µA)
R
LT1634CCZ (I = 10µA)
2.49500
–0.20
2.49700
–0.12
2.49562
–0.175
2.49437
–0.225
2.49094
–0.362
2.49062
–0.375
2.500
2.500
2.500
2.500
2.500
2.500
2.50500
0.20
2.50300
0.12
2.50437
0.175
2.50562
0.225
2.50906
0.362
2.50937
0.375
V
R
%
l
l
l
l
l
LT1634ACS8 (I = 10µA)
V
%
V
%
V
%
V
%
R
LT1634AIS8 (I = 10µA)
R
LT1634BCMS8/LT1634BCS8 (I = 10µA)
R
LT1634BIS8 (I = 10µA)
R
LT1634CCZ (I = 10µA)
V
%
R
Reverse Breakdown Change
with Current (Note 4)
10µA ≤ I ≤ 2mA
0.30
0.40
1.5
3.0
mV
mV
R
l
2mA ≤ I ≤ 20mA
2
2
8
mV
mV
µA
R
l
l
10
Minimum Operating Current
8
l
l
Temperature Coefficient (Note 8)
LT1634A, I = 10µA
4
10
10
25
ppm/°C
ppm/°C
R
LT1634B/LT1634C, I = 10µA
R
Reverse Dynamic Impedance (Note 5) 10µA ≤ I ≤ 2mA
0.15
0.20
0.75
1.50
Ω
Ω
R
l
Low Frequency Noise (Note 6)
Hysteresis (Note 7)
I = 10µA, 0.1Hz ≤ f ≤ 10Hz
15
µV
P-P
R
∆T = –40°C to 85°C
∆T = 0°C to 70°C
160
40
ppm
ppm
The l deꢃoteꢄ the ꢄpecificatioꢃꢄ which apply over the ꢂull
4.096 elecTrical characTerisTics
operatiꢃg temperature raꢃge, otherwiꢄe ꢄpecificatioꢃꢄ are at TA = 25°C4 (Note 3)
PAꢁAMETEꢁ
CꢀNDITIꢀNS
MIN
TYP
MAX
UNITS
Reverse Breakdown Voltage
LT1634ACS8/LT1634BCS8/
4.09395
–0.05
4.096
4.09805
0.05
V
%
LT1634AIS8/LT1634BIS8 (I = 20µA)
R
LT1634CCZ (I = 20µA)
4.08780
–0.20
4.09108
–0.12
4.08883
–0.175
4.08678
–0.225
4.08115
–0.362
4.08064
–0.375
4.096
4.096
4.096
4.096
4.096
4.096
4.10419
0.20
4.10091
0.12
4.10317
0.175
4.10522
0.225
4.11085
0.362
4.11137
0.375
V
R
%
l
l
l
l
l
LT1634ACS8 (I = 20µA)
V
%
V
%
V
%
V
%
R
LT1634AIS8 (I = 20µA)
R
LT1634BCS8 (I = 20µA)
R
LT1634BIS8 (I = 20µA)
R
LT1634CCZ (I = 20µA)
V
%
R
Reverse Breakdown Change
with Current (Note 4)
20µA ≤ I ≤ 2mA
0.30
0.40
1.5
3.0
mV
mV
R
l
2mA ≤ I ≤ 20mA
6
6
15
20
15
mV
mV
µA
R
l
l
Minimum Operating Current
1634ff
4
For more information www.linear.com/LT1634
LT1634
The l deꢃoteꢄ the ꢄpecificatioꢃꢄ which apply over the ꢂull
4.096v elecTrical characTerisTics
operatiꢃg temperature raꢃge, otherwiꢄe ꢄpecificatioꢃꢄ are at TA = 25°C4 (Note 3)
PAꢁAMETEꢁ
CꢀNDITIꢀNS
LT1634A, I = 20µA
MIN
TYP
MAX
UNITS
l
l
Temperature Coefficient (Note 8)
4
10
10
25
ppm/°C
ppm/°C
R
LT1634B/LT1634C, I = 20µA
R
Reverse Dynamic Impedance (Note 5) 20µA ≤ I ≤ 2mA
0.15
0.20
0.75
1.50
Ω
Ω
R
l
Low Frequency Noise (Note 6)
Hysteresis (Note 7)
I = 20µA, 0.1Hz ≤ f ≤ 10Hz
30
µV
P-P
R
∆T = –40°C to 85°C
∆T = 0°C to 70°C
160
40
ppm
ppm
The l deꢃoteꢄ the ꢄpecificatioꢃꢄ which apply over the ꢂull operatiꢃg
5v elecTrical characTerisTics
temperature raꢃge, otherwiꢄe ꢄpecificatioꢃꢄ are at TA = 25°C4 (Note 3)
PAꢁAMETEꢁ
CꢀNDITIꢀNS
MIN
TYP
MAX
UNITS
Reverse Breakdown Voltage
LT1634ACS8/LT1634BCS8/
4.99750
–0.05
5.000
5.00250
0.05
V
%
LT1634AIS8/LT1634BIS8 (I = 20µA)
R
LT1634CCZ (I = 20µA)
4.99000
–0.20
4.99400
–0.12
4.99125
–0.175
4.98875
–0.225
498188
–0.362
4.98126
–0.375
5.000
5.000
5.000
5.000
5.000
5.000
5.01000
0.20
5.00600
0.12
5.00875
0.175
5.01125
0.225
5.01813
0.362
5.01876
0.375
V
R
%
l
l
l
l
l
LT1634ACS8 (I = 20µA)
V
%
V
%
V
%
V
%
R
LT1634AIS8 (I = 20µA)
R
LT1634BCS8 (I = 20µA)
R
LT1634BIS8 (I = 20µA)
R
LT1634CCZ (I = 20µA)
V
%
R
Reverse Breakdown Change
with Current (Note 4)
20µA ≤ I ≤ 2mA
0.30
0.40
1.5
3.0
mV
mV
R
l
2mA ≤ I ≤ 20mA
6
6
15
20
15
mV
mV
µA
R
l
l
Minimum Operating Current
l
l
Temperature Coefficient (Note 8)
LT1634A, I = 20µA
4
10
10
25
ppm/°C
ppm/°C
R
LT1634B/LT1634C, I = 20µA
R
Reverse Dynamic Impedance (Note 5) 20µA ≤ I ≤ 2mA
0.15
0.20
0.75
1.50
Ω
Ω
R
l
Low Frequency Noise (Note 6)
Hysteresis (Note 7)
I = 20µA, 0.1Hz ≤ f ≤ 10Hz
35
µV
P-P
R
∆T = –40°C to 85°C
∆T = 0°C to 70°C
160
40
ppm
ppm
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: If the part is stored outside of the specific operating temperature
range, the output may shift due to hysteresis.
Note 3: ESD (Electrostatic Discharge) sensitive device. Use proper ESD
handling precautions.
Note ±: Output requires 0.1µF for operating current greater than 1mA.
Note 5: This parameter is guaranteed by “reverse breakdown change with
Note 7: 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.
Note 8: Temperature coefficient is calculated from the minimum and
maximum output voltage measured at T , Room and T
as follows:
MIN
MAX
TC = (V
– V
)/(T
– T
)
MIN
OMAX
OMIN
MAX
Incremental slope is also measured at 25°C.
current” test.
Note 9: Peak-to-peak noise is measured with a single highpass filter at
0.1Hz and 2-pole lowpass filter at 10Hz.
1634ff
5
For more information www.linear.com/LT1634
LT1634
1.25v Typical perForMance characTerisTics
ꢁeverꢄe 6oltage Chaꢃge
vꢄ Curreꢃt
ꢁeverꢄe Characteriꢄticꢄ
Temperature Driꢂt
4
3
2
1
0
2.0
10
8
10µA
T = –40°C TO 85°C
A
T
= –40°C TO 85°C
A
100µA
200µA
500µA
1mA
1.5
1.0
0.5
0
6
4
–0.5
–1.0
–1.5
2
–2.0
0
–20
20
40
60
80
0.01
0.1
1
10
100
–40
0
0.4
0.8
1.2
0
1.6
REVERSE CURRENT (mA)
TEMPERATURE (°C)
REVERSE VOLTAGE (V)
1634-1.25 G03
1634-1.25 G02
1634-1.25 G01
ꢁeverꢄe Dyꢃamic Impedaꢃce
Dyꢃamic Impedaꢃce vꢄ Frequeꢃcy
Forward Characteriꢄticꢄ
1.2
10000
1000
100
100
10
1
T
= 25°C
T
= 25°C
A
A
T = 25°C
A
f = 25Hz
I
= 10µA
0.8
0.4
0
R
I
= 10µA
R
C
= 0.022µF
OUT
C
= 0µF
OUT
10
I
= 100µA
= 0.47µF
R
C
OUT
I
= 100µA
OUT
1
R
C
= 0µF
0.1
0.1
0.001
0.01
0.1
1
10
100
0.01
0.1
1
10
100
0.01
0.1
1
10
100
FREQUENCY (kHz)
FORWARD CURRENT (mA)
REVERSE CURRENT (mA)
1634-1.25 G05
1634-1.25 G06
1634-1.25 G04
.41Hz to 1.Hz Noiꢄe
ꢁeꢄpoꢃꢄe Time
ꢁeꢄpoꢃꢄe Time
8
6
T
= –40°C TO 85°C
= 10µA
A
1.5V
1V
1.5V
1V
I
R
0.5V
0V
4
0.5V
0V
OUT
IN
OUT
IN
2
5V
0V
0
5V
0V
–2
–4
–6
–8
I
= 10µA
= 0
1634-1.25 G08
I
= 10µA
OUT
1634-1.25 G09
200µs/DIV
R
OUT
20ms/DIV
R
C
C
= 0.1µF
0
10
20 30
40
50
60
70
TIME (SEC)
1634-1.25 G07
1634ff
6
For more information www.linear.com/LT1634
LT1634
2.5v Typical perForMance characTerisTics
ꢁeverꢄe 6oltage Chaꢃge
vꢄ Curreꢃt
ꢁeverꢄe Characteriꢄticꢄ
Temperature Driꢂt
6
5
4
3
2
1
0
4
10
8
T
= –40°C TO 85°C
T
= –40°C TO 85°C
10µA
A
A
100µA
200µA
500µA
1mA
3
2
1
0
6
4
–1
–2
–3
2
0
–4
0.01
0.1
1
10
100
–20
20
40
60
80
–40
0
0
0.5
1.5
2.0
2.5
3.0
1.0
REVERSE CURRENT (mA)
REVERSE VOLTAGE (V)
TEMPERATURE (°C)
1634-2.5 G03
1634-2.5 G02
1634-2.5 G01
ꢁeverꢄe Dyꢃamic Impedaꢃce
Dyꢃamic Impedaꢃce vꢄ Frequeꢃcy
Forward Characteriꢄticꢄ
1.2
10000
1000
100
100
10
1
T
= 25°C
T
= 25°C
A
T
= 25°C
A
A
f = 25Hz
I
= 10µA
R
0.8
0.4
0
C
= 0µF
OUT
I
= 10µA
R
C
= 0.068µF
OUT
10
I
= 100µA
= 0.47µF
R
C
OUT
I
= 100µA
OUT
R
C
= 0µF
1
0.1
0.1
0.01
0.1
1
FREQUENCY (kHz)
10
100
0.01
0.1
1
10
100
0.001
0.01
0.1
1
10
100
FORWARD CURRENT (mA)
REVERSE CURRENT (mA)
1634-2.5 G05
1634-2.5 G06
1635-2.5 G04
.41Hz to 1.Hz Noiꢄe
ꢁeꢄpoꢃꢄe Time
ꢁeꢄpoꢃꢄe Time
20
15
T
= –40°C TO 85°C
= 10µA
A
3V
2V
1V
0V
3V
I
R
2V
1V
0V
10
5
5V
0V
5V
0V
0
–5
I
= 10µA
OUT
1634-2.5 G09
I
= 10µA
= 0
1634-2.5 G08
20ms/DIV
R
200µs/DIV
R
OUT
–10
–15
–20
C
= 0.1µF
C
20 30 40 50
TIME (SEC)
0
10
60 70 80
1634-2.5 G07
1634ff
7
For more information www.linear.com/LT1634
LT1634
4.096v Typical perForMance characTerisTics
ꢁeverꢄe 6oltage Chaꢃge
vꢄ Curreꢃt
ꢁeverꢄe Characteriꢄticꢄ
Temperature Driꢂt
20
16
12
8
6
4
5
4
3
2
1
0
T
= –40°C TO 85°C
T
= –40°C to 85°C
A
20µA
A
100µA
200µA
500µA
1mA
2
0
–2
–4
–6
4
0
0
2
3
4
5
0.01
0.1
1
10
100
1
–20
0
40
60
80
–40
20
REVERSE CURRENT (mA)
REVERSE VOLTAGE (V)
TEMPERATURE (°C)
1634-4 G03
1634-4 G01
1634-4 G02
ꢁeverꢄe Dyꢃamic Impedaꢃce
Dyꢃamic Impedaꢃce vꢄ Frequeꢃcy
Forward Characteriꢄticꢄ
1.2
10000
100
10
1
T
= 25°C
T
= 25°C
A
T = 25°C
A
A
f = 25Hz
I
= 20µA
R
1000
100
10
C
= 0µF
OUT
0.8
0.4
0
I
= 20µA
R
C
= 0.033µF
OUT
I
= 100µA
= 0.33µF
R
C
OUT
I
= 100µA
OUT
R
C
= 0µF
1
0.1
0.1
0.01
0.1
1
10
100
0.01
0.1
1
10
100
0.001
0.01
0.1
1
10
100
FREQUENCY (kHz)
FORWARD CURRENT (mA)
REVERSE CURRENT (mA)
1634-4 G05
1634-2.5 G06
1635-4 G04
.41Hz to 1.Hz Noiꢄe
ꢁeꢄpoꢃꢄe Time
ꢁeꢄpoꢃꢄe Time
40
30
T
= –40°C TO 85°C
= 20µA
A
6V
4V
2V
0V
6V
I
R
4V
2V
0V
20
10
10V
0V
10V
0V
0
–10
–20
–30
–40
I
= 20µA
R
OUT
1634-4 G08
I
= 20µA
= 0
1634-4 G07
20ms/DIV
500µs/DIV
R
OUT
C
= 0.1µF
C
40 50
0
10 20 30
60 70 80
TIME (SEC)
1634-4 G06
1634ff
8
For more information www.linear.com/LT1634
LT1634
5v Typical perForMance characTerisTics
ꢁeverꢄe 6oltage Chaꢃge
vꢄ Curreꢃt
ꢁeverꢄe Characteriꢄticꢄ
Temperature Driꢂt
20
16
12
8
5
4
3
2
1
0
8
T
= –40°C TO 85°C
A
T
= –40°C TO 85°C
20µA
A
100µA
200µA
500µA
1mA
6
4
2
0
–2
–4
–6
4
0
–8
0
2
3
4
5
6
0.01
0.1
1
10
100
1
–20
0
40
60
80
–40
20
REVERSE CURRENT (mA)
REVERSE VOLTAGE (V)
TEMPERATURE (°C)
1634-5 G03
1634-5 G01
1634-5 G02
ꢁeverꢄe Dyꢃamic Impedaꢃce
Dyꢃamic Impedaꢃce vꢄ Frequeꢃcy
Forward Characteriꢄticꢄ
1.2
10000
1000
100
100
10
1
T
= 25°C
T
= 25°C
T
= 25°C
A
A
A
f = 25Hz
I
= 20µA
R
C
= 0µF
OUT
0.8
0.4
0
I
= 20µA
= 0.1µF
R
10
C
OUT
I
= 100µA
= 0.22µF
R
C
OUT
I
= 100µA
R
OUT
1
C
= 0µF
0.1
0.1
0.01
0.1
1
10
100
0.01
0.1
1
10
100
0.001
0.01
0.1
1
10
100
FREQUENCY (kHz)
FORWARD CURRENT (mA)
REVERSE CURRENT (mA)
1634-5 G05
1634-2.5 G06
1635-5 G04
.41Hz to 1.Hz Noiꢄe
ꢁeꢄpoꢃꢄe Time
ꢁeꢄpoꢃꢄe Time
40
30
T
I
= –40°C TO 85°C
= 20µA
A
6V
4V
2V
0V
6V
4V
2V
0V
R
20
10
10V
0V
10V
0V
0
–10
–20
–30
–40
I
= 20µA
OUT
1634-5 G08
20ms/DIV
I
= 20µA
= 0
1634-5 G07
R
500µs/DIV
R
OUT
C
= 0.1µF
C
40 50
10 20 30
TIME (SEC)
0
60 70 80
1634-5 G06
1634ff
9
For more information www.linear.com/LT1634
LT1634
applicaTions inForMaTion
V
IN
≥ 10.5V
The reverse characteristics of the LT1634 behave like
a resistor in parallel with a Zener diode. This simple,
well behaved characteristic is important to the proper
operation of circuits like Figure 1. The adjustable output
voltage reference depends upon positive feedback from
the LT1495’s output to start-up and regulate the bias cur-
rent for the LT1634.
V
– 1.25V
10µA
OUT
R
B
=
+
V
OUT
1.5V TO 10V
LT1495
LT1634-1.25
–
R1
50k TO 1.75M
R2
250k
1634 F01
Figure 14 Adjuꢄtable ꢀutput 6oltage ꢁeꢂereꢃce
Typical applicaTions
The LT193±-5 Geꢃerateꢄ the LTC1±±8 Dual 12-Bit
DAC’ꢄ ꢁeꢂereꢃce aꢃd Supply 6oltage
ꢁeꢂereꢃce ꢂor Micropower A/D Coꢃverter
5V
7.5V TO 12V
V
IN
18k
LTC1286
3.48k
LTC1448
1
2
3
4
8
7
6
5
1
2
3
4
8
7
6
5
V
5V
V
REF
CC
V
V
CLK
OUTB
OUTB
µC/µP
SERIAL
INTERFACE
0.1µF
+IN
–IN
CLK
D
IN
V
CC
0.1µF
µC/µP
0.1µF
LT1634-4.096
D
SERIAL
LT1634-5
OUT
CS/LD
REF
GND
OUTA
INTERFACE
GND CS/SHDN
V
OUTA
V
0.1µF
1634 TA03
1634 TA04
1634ff
10
For more information www.linear.com/LT1634
LT1634
package DescripTion
Pleaꢄe reꢂer to http://www4liꢃear4com/deꢄigꢃtoolꢄ/packagiꢃg/ ꢂor the moꢄt receꢃt package drawiꢃgꢄ4
S8 Package
8-Lead Plastic Small Outline (Narrow .150 Inch)
(Reference LTC DWG # 05-08-1610 Rev G)
.189 – .197
(4.801 – 5.004)
.045 ±.005
NOTE 3
.050 BSC
7
5
8
6
NOTE:
1. DIMENSIONS IN
INCHES
(MILLIMETERS)
2. DRAWING NOT TO SCALE
3. THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH
OR PROTRUSIONS. MOLD FLASH OR PROTRUSIONS
SHALL NOT EXCEED .006" (0.15mm)
.245
MIN
.160 ±.005
.150 – .157
(3.810 – 3.988)
NOTE 3
.228 – .244
(5.791 – 6.197)
4. PIN 1 CAN BE BEVEL EDGE OR A DIMPLE
.030 ±.005
TYP
1
3
4
2
RECOMMENDED SOLDER PAD LAYOUT
.010 – .020
(0.254 – 0.508)
× 45°
.053 – .069
(1.346 – 1.752)
.004 – .010
(0.101 – 0.254)
.008 – .010
(0.203 – 0.254)
0°– 8° TYP
SO8 REV G 0212
.016 – .050
(0.406 – 1.270)
.050
(1.270)
BSC
.014 – .019
(0.355 – 0.483)
TYP
MS8 Package
8-Lead Plastic MSOP
(Reference LTC DWG # 05-08-1660 Rev G)
0.889 0.127
(.035 .005)
NOTE:
1. DIMENSIONS IN MILLIMETER/(INCH)
2. DRAWING NOT TO SCALE
3. DIMENSION DOES NOT INCLUDE MOLD FLASH,
PROTRUSIONS OR GATE BURRS. MOLD FLASH,
PROTRUSIONS OR GATE BURRS SHALL NOT EXCEED
0.152mm (.006") PER SIDE
5.10
(.201)
MIN
3.20 – 3.45
(.126 – .136)
4. DIMENSION DOES NOT INCLUDE INTERLEAD FLASH OR
PROTRUSIONS.INTERLEAD FLASH OR PROTRUSIONS
SHALL NOT EXCEED 0.152mm (.006") PER SIDE
5. LEAD COPLANARITY (BOTTOM OF LEADS AFTER FORMING)
SHALL BE 0.102mm (.004") MAX
3.00 0.102
(.118 .004)
(NOTE 3)
0.52
(.0205)
REF
0.65
(.0256)
BSC
0.42 0.038
(.0165 .0015)
TYP
8
7 6
5
RECOMMENDED SOLDER PAD LAYOUT
3.00 0.102
(.118 .004)
(NOTE 4)
4.90 0.152
(.193 .006)
DETAIL “A”
0.254
(.010)
0° – 6° TYP
GAUGE PLANE
1
2
3
4
0.53 0.152
(.021 .006)
1.10
(.043)
MAX
0.86
(.034)
REF
DETAIL “A”
0.18
(.007)
SEATING
PLANE
0.22 – 0.38
0.1016 0.0508
(.009 – .015)
(.004 .002)
0.65
(.0256)
BSC
TYP
MSOP (MS8) 0213 REV G
1634ff
11
For more information www.linear.com/LT1634
LT1634
package DescripTion
Pleaꢄe reꢂer to http://www4liꢃear4com/deꢄigꢃtoolꢄ/packagiꢃg/ ꢂor the moꢄt receꢃt package drawiꢃgꢄ4
Z Package
3-Lead Plastic TO-92 (Similar to TO-226)
(Reference LTC DWG # 05-08-1410 Rev C)
.180 ± .005
(4.572 ± 0.127)
.060 ± .005
(1.524± 0.127)
DIA
.90
(2.286)
NOM
.180 ± .005
(4.572 ± 0.127)
5°
NOM
.500
(12.70)
MIN
.050
(1.270)
MAX
UNCONTROLLED
LEAD DIMENSION
.016 ± .003
(0.406 ± 0.076)
.015 ± .002
(0.381 ± 0.051)
Z3 (TO-92) 1008 REV C
.050
(1.27)
BSC
.098 +.016/–.04
(2.5 +0.4/–0.1)
2 PLCS
BULK PACK
TO-92 TAPE AND REEL
REFER TO TAPE AND REEL SECTION OF
LTC DATA BOOK FOR ADDITIONAL INFORMATION
.060 ± .010
(1.524 ± 0.254)
.140 ± .010
(3.556 ± 0.127)
3
2
1
10° NOM
1634ff
12
For more information www.linear.com/LT1634
LT1634
revision hisTory (ꢁeviꢄioꢃ hiꢄtory begiꢃꢄ at ꢁev F)
ꢁE6
DATE
10/14 Web Links Added
NC Pins Identified on MS8 and S8 Package
Revision History Added
DESCꢁIPTIꢀN
PAGE NUMBEꢁ
F
All
2
13
1634ff
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However,noresponsibilityisassumedforitsuse.LinearTechnologyCorporationmakesnorepresenta-
tionthattheinterconnectionofitscircuitsasdescribedhereinwillnotinfringeonexistingpatentrights.
13
LT1634
Typical applicaTions
Siꢃgle Cell Li-Ioꢃ Battery Superviꢄory Circuit (IQ = 2.µA)
OFF
CHARGER
V
BAT
SW
T0 LOAD
1.75V –
R3
1.75M
0.1%
A2
R
51k
5%
1/4 LT1496
S
R
10M
5%
R
1M
5%
H1
SW
+
+
D1
A1
A
BATTERY
1/4 LT1496
R1
500k
0.1%
R
H2
10M
5%
V
BAT
–
+
D2
A3
–
1/4 LT1496
1.25V
A4
–
1/4 LT1496
+
R2
1.25M
0.1%
LT1634-1.25
R4
1.25M
0.1%
1634 TA05
D1, D2: 1N458
R1 TO R4: CAR6 SERIES IRC (512) 992-7900
Micropower 6oltage aꢃd Curreꢃt ꢁeꢂereꢃce
R1 TO R3:
MAR5 SERIES, IRC
(512) 992-7900
R3
249k
0.1%
2 AAA
ALKALINE
CELLS
R4
24k
5%
–
+
+
ZTX214C
1/2 LT1495
1/2 LT1495
R1
200k
0.1%
R2
1M
0.1%
–
LT1634
1.25V
I
COM
V
OUT
1.5V
OUT
1634 TA06
1µA
relaTeD parTs
PAꢁT NUMBEꢁ
DESCꢁIPTIꢀN
CꢀMMENTS
LTC1440
Micropower Comparator with Reference
3.7µA Max Supply Current, 1% 1.182V Reference,
MSOP, PDIP and SO-8 Packages
LT1460
Micropower Series Reference
0.075% Max, 10ppm/°C Max Drift, 2.5V, 5V and 10V Versions,
MSOP, PDIP, SO-8, SOT-23 and TO-92 Packages
LT1495
1.5µA Precision Rail-to-Rail Dual Op Amp
Nanopower Comparator with Reference
1.5µA Max Supply Current, 100pA Max IOS
LTC1540
600nA Max Supply Current, 2% 1.182V Reference,
MSOP and SO-8 Packages
1634ff
LT 1014 REV F • PRINTED IN USA
LinearTechnology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
14
(408)432-1900 FAX: (408) 434-0507 www.linear.com/LT1634
●
●
LINEAR TECHNOLOGY CORPORATION 1998
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