LT1634AIS8-4.096#PBF [Linear]
LT1634 - Micropower Precision Shunt Voltage Reference; Package: SO; Pins: 8; Temperature Range: -40°C to 85°C;型号: | LT1634AIS8-4.096#PBF |
厂家: | Linear |
描述: | LT1634 - Micropower Precision Shunt Voltage Reference; Package: SO; Pins: 8; Temperature Range: -40°C to 85°C 光电二极管 |
文件: | 总12页 (文件大小:330K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
LT1634
Micropower Precision
Shunt Voltage Reference
U
FEATURES
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,butisstablewithcapacitiveloads.Lowdynamic
impedance makes the LT1634 reference easy to use from
unregulated supplies.
■
Initial Voltage Accuracy: 0.05%
■
Low Operating Current: 10µA
■
■
■
Low Drift: 10ppm/°C Max
Less Than 1Ω Dynamic Impedance
Available in 1.25V, 2.5V, 4.096V and 5V in SO-8
and TO-92 Packages
■
■
1.25V and 2.5V Available in MSOP Package
Both Commercial and Industrial Temperature Range
Parts Are Available
U
APPLICATIONS
TheLT1634referencecanbeusedasahighperformance
upgrade to the LM185/LM385, LT1004 and LT1034
where lower power and guaranteed temperature drift is
required.
■
Portable Meters
■
Precision Regulators
■
A/D and D/A Converters
Calibrators
■
, LTC and LT are registered trademarks of Linear Technology Corporation.
U
TYPICAL APPLICATION
Super Accurate ±4.096V Output References
5V
45k
+
V
OUT
LT1495
LT1634-4.096
4.096V
Temperature Drift
–
2.0
–5V
I
= 10µA
= 1.25V
R
OUT
V
5V
4
1.5
1.0
LTC®1043
5
6
0.5
0
I
= 200µA
S
OUTPUT ACCURACY
BETTER THAN 0.075%
AT ±500µA OUTPUT
1µF
–0.5
–1.0
–1.5
15
18
17
–5V
–2.0
5V
–20
20
40
60
80
100
–40
0
TEMPERATURE (°C)
–
1634 TA02
V
OUT
LT1495
–4.096V
+
1µF
–5V
1634 TA01
1
LT1634
W W U W
ABSOLUTE MAXIMUM RATINGS
Operating Current
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
U
W U
PACKAGE/ORDER INFORMATION
TOP VIEW
TOP VIEW
1
2
3
4
8
7
6
5
DNC*
DNC*
DNC*
GND
DNC*
DNC*
DNC*
DNC*
DNC*
GND
1
2
3
4
8 DNC*
7 DNC*
6 V
OUT
V
OUT
5 TEST**
TEST**
MS8 PACKAGE
8-LEAD PLASTIC MSOP
S8 PACKAGE
8-LEAD PLASTIC SO
TJMAX = 125°C, θJA = 190°C/ W
TJMAX = 125°C, θJA = 250°C/ W
ORDER PART NUMBER
MS8 PART MARKING
ORDER PART NUMBER
S8 PART MARKING
LT1634BCMS8-1.25
LT1634BCMS8-2.5
LTCV
LTDF
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
634A1
634A2
634A4
634A5
634AI1
634AI2
634AI4
634AI5
634B1
634B2
634B4
634B5
634BI1
634BI2
634BI4
634BI5
ORDER PART NUMBER
BOTTOM VIEW
3
2
1
LT1634CCZ-1.25
LT1634CCZ-2.5
LT1634CCZ-4.096
LT1634CCZ-5
TEST** V
GND
OUT
Z PACKAGE
3-LEAD PLASTIC TO-92
TJMAX = 125°C, θJA = 190°C/ W
*Connected internally. Do Not Connect external circuitry to these pins.
**Connect to ground in user application.
Consult factory for Military grade parts.
2
LT1634
U
AVAILABLE OPTIO S
PACKAGE TYPE
S8
TEMPERATURE COEFFICIENT
TEMPERATURE
ACCURACY (%)
(ppm/°C)
MS8
Z
0°C to 70°C
0.05
10
LT1634ACS8-1.25
LT1634ACS8-2.5
LT1634ACS8-4.096
LT1634ACS8-5
–40°C to 85°C
0°C to 70°C
0.05
0.05
0.05
0.20
10
25
25
25
LT1634AIS8-1.25
LT1634AIS8-2.5
LT1634AIS8-4.096
LT1634AIS8-5
LT1634BCMS8-1.25
LT1634BCMS8-2.5
LT1634BCS8-1.25
LT1634BCS8-2.5
LT1634BCS8-4.096
LT1634BCS8-5
–40°C to 85°C
0°C to 70°C
LT1634BIS8-1.25
LT1634BIS8-2.5
LT1634BIS8-4.096
LT1634BIS8-5
LT1634CCZ-1.25
LT1634CCZ-2.5
LT1634CCZ-4.096
LT1634CCZ-5
1.25V ELECTRICAL CHARACTERISTICS (Note 2)
PARAMETER
CONDITIONS
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
1.250 1.25250
0.20
V
%
R
LT1634ACS8 (I = 10µA)
●
●
●
●
●
1.24849
–0.12
1.250 1.25149
0.12
V
R
%
LT1634AIS8 (I = 10µA)
1.24781
–0.175
1.250 1.25218
0.175
V
%
R
LT1634BCS8/LT1634BCMS8 (I = 10µA)
1.24718
–0.225
1.250 1.25281
0.225
V
%
R
LT1634BIS8 (I = 10µA)
1.24547
–0.362
1.250 1.25453
0.362
V
%
R
LT1634CCZ (I = 10µA)
1.24531
–0.375
1.250 1.25469
0.375
V
%
R
Reverse Breakdown Change
with Current (Note 3)
10µA ≤ I ≤ 2mA
0.25
0.30
1
2
mV
mV
R
●
2mA ≤ I ≤ 20mA
2
2
8
mV
mV
R
●
●
10
Minimum Operating Current
Temperature Coefficient
7
µA
LT1634A, I = 10µA
●
●
4
10
10
25
ppm/°C
ppm/°C
R
LT1634B, I = 10µA
R
Reverse Dynamic Impedance (Note 4)
10µA ≤ I ≤ 2mA
0.125
0.150
0.5
1.0
Ω
Ω
R
●
Low Frequency Noise (Note 5)
Hysteresis (Note 6)
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
3
LT1634
2.5V ELECTRICAL CHARACTERISTICS (Note 2)
PARAMETER
CONDITIONS
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
2.500 2.50500
0.20
V
%
R
LT1634ACS8 (I = 10µA)
●
●
●
●
●
2.49700
–0.12
2.500 2.50300
0.12
V
R
%
LT1634AIS8 (I = 10µA)
2.49562
–0.175
2.500 2.50437
0.175
V
%
R
LT1634BCMS8/LT1634BCS8 (I = 10µA)
2.49437
–0.225
2.500 2.50562
0.225
V
%
R
LT1634BIS8 (I = 10µA)
2.49094
–0.362
2.500 2.50906
0.362
V
%
R
LT1634CCZ (I = 10µA)
2.49062
–0.375
2.500 2.50937
0.375
V
%
R
Reverse Breakdown Change
with Current (Note 3)
10µA ≤ I ≤ 2mA
0.30
0.40
1.5
3.0
mV
mV
R
●
2mA ≤ I ≤ 20mA
2
2
8
mV
mV
R
●
●
10
Minimum Operating Current
Temperature Coefficient
8
µA
LT1634A, I = 10µA
●
●
4
10
10
25
ppm/°C
ppm/°C
R
LT1634B, I = 10µA
R
Reverse Dynamic Impedance (Note 4)
10µA ≤ I ≤ 2mA
0.15
0.20
0.75
1.50
Ω
Ω
R
●
Low Frequency Noise (Note 5)
Hysteresis (Note 6)
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
4.096V ELECTRICAL CHARACTERISTICS (Note 2)
PARAMETER
CONDITIONS
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
4.096 4.10419
0.20
V
%
R
LT1634ACS8 (I = 20µA)
●
●
●
●
●
4.09108
–0.12
4.096 4.10091
0.12
V
R
%
LT1634AIS8 (I = 20µA)
4.08883
–0.175
4.096 4.10317
0.175
V
%
R
LT1634BCS8 (I = 20µA)
4.08678
–0.225
4.096 4.10522
0.225
V
%
R
LT1634BIS8 (I = 20µA)
4.08115
–0.362
4.096 4.11085
0.362
V
%
R
LT1634CCZ (I = 20µA)
4.08064
–0.375
4.096 4.11137
0.375
V
%
R
Reverse Breakdown Change
with Current (Note 3)
20µA ≤ I ≤ 2mA
0.3
0.4
1.5
3.0
mV
mV
R
●
2mA ≤ I ≤ 20mA
2
2
8
mV
mV
R
●
●
10
Minimum Operating Current
15
µA
4
LT1634
4.096V ELECTRICAL CHARACTERISTICS (Note 2)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Temperature Coefficient
LT1634A, I = 20µA
●
●
4
10
10
25
ppm/°C
ppm/°C
R
LT1634B, I = 20µA
R
Reverse Dynamic Impedance (Note 4)
20µA ≤ I ≤ 2mA
0.15
0.20
0.75
1.50
Ω
Ω
R
●
Low Frequency Noise (Note 5)
Hysteresis (Note 6)
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
5V ELECTRICAL CHARACTERISTICS
(Note 2)
PARAMETER
CONDITIONS
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
5.000 5.01000
0.20
V
%
R
LT1634ACS8 (I = 20µA)
●
●
●
●
●
4.99400
–0.12
5.000 5.00600
0.12
V
R
%
LT1634AIS8 (I = 20µA)
4.99125
–0.175
5.000 5.00875
0.175
V
%
R
LT1634BCS8 (I = 20µA)
4.98875
–0.225
5.000 5.01125
0.225
V
%
R
LT1634BIS8 (I = 20µA)
498188
–0.362
5.000 5.01813
0.362
V
%
R
LT1634CCZ (I = 20µA)
4.98126
–0.375
5.000 5.01876
0.375
V
%
R
Reverse Breakdown Change
with Current (Note 3)
20µA ≤ I ≤ 2mA
0.3
0.4
1.5
3.0
mV
mV
R
●
2mA ≤ I ≤ 20mA
2
2
8
mV
mV
R
●
●
10
Minimum Operating Current
Temperature Coefficient
15
µA
LT1634A, I = 20µA
●
●
4
10
10
25
ppm/°C
ppm/°C
R
LT1634B, I = 20µA
R
Reverse Dynamic Impedance (Note 4)
20µA ≤ I ≤ 2mA
0.15
0.20
0.75
1.50
Ω
Ω
R
●
Low Frequency Noise (Note 5)
Hysteresis (Note 6)
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
The
●
denotes specifications which apply over the full operating
Note 5: Peak-to-peak noise is measured with a single highpass filter at
0.1Hz and 2-pole lowpass filter at 10Hz.
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 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
LT1634
1.25V TYPICAL PERFOR A CE CHARACTERISTICS
U W
Reverse Voltage Change
vs Current
Reverse Characteristics
Temperature Drift
2.0
4
3
2
1
0
10
8
T
= –40°C TO 85°C
10µA
T
A
= –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
0.4
0.8
1.2
–40 –20
20
0
TEMPERATURE (°C)
40
60
80
0.01
0.1
1
10
100
0
1.6
REVERSE CURRENT (mA)
REVERSE VOLTAGE (V)
1634-1.25 G03
1634-1.25 G01
1634-1.25 TA02
Reverse Dynamic Impedance
Dynamic Impedance vs Frequency
Forward Characteristics
1.2
10000
1000
100
100
10
1
T
= 25°C
T
= 25°C
A
A
T
A
= 25°C
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
0.01
0.1
1
10
100
0.001
0.01
0.1
1
10
100
0.01
0.1
1
10
100
FORWARD CURRENT (mA)
REVERSE CURRENT (mA)
FREQUENCY (kHz)
1634-1.25 G06
1634-1.25 G04
1634-1.25 G05
Response Time
Response Time
0.1Hz to 10Hz Noise
8
T
= –40°C TO 85°C
= 10µA
R
A
1.5V
1V
1.5V
1V
I
6
4
0.5V
0V
0.5V
0V
OUT
IN
OUT
IN
2
5V
0V
0
5V
0V
–2
–4
–6
–8
1634-1.25 G08
1634-1.25 G09
IR = 10µA
COUT = 0.1µF
IR = 10µA
COUT = 0
200µs/DIV
20ms/DIV
0
10
20 30
40
50 60
70
TIME (SEC)
1634-1.25 G07
6
LT1634
U W
2.5V TYPICAL PERFOR A CE CHARACTERISTICS
Reverse Voltage Change
vs Current
Reverse Characteristics
Temperature Drift
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
–4
0
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
Reverse Dynamic Impedance
Forward Characteristics
Dynamic Impedance vs Frequency
1.2
10000
1000
100
100
10
1
T
= 25°C
T = 25°C
A
A
T
= 25°C
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
0.1Hz to 10Hz Noise
Response Time
Response Time
20
15
T
R
= –40°C TO 85°C
= 10µA
A
3V
3V
2V
1V
0V
I
2V
1V
0V
10
5
5V
0V
5V
0V
0
–5
1634-2.5 G08
1634-2.5 G09
IR = 10µA
COUT = 0.1µF
IR = 10µA
COUT = 0
200µs/DIV
20ms/DIV
–10
–15
–20
20 30 40 50
TIME (SEC)
0
10
60 70 80
1634-2.5 G07
7
LT1634
4.096V TYPICAL PERFOR A CE CHARACTERISTICS
U W
Reverse Voltage Change
vs Current
Reverse Characteristics
Temperature Drift
6
4
20
16
12
8
5
4
3
2
1
0
T
A
= –40°C TO 85°C
T
= –40°C to 85°C
20µA
A
100µA
200µA
500µA
1mA
2
0
–2
–4
–6
4
0
0
2
3
4
5
–20
0
40
60
80
0.01
0.1
1
10
100
1
–40
20
REVERSE VOLTAGE (V)
REVERSE CURRENT (mA)
TEMPERATURE (°C)
1634-4 G03
1634-4 G01
1634-4 G02
Reverse Dynamic Impedance
Dynamic Impedance vs Frequency
Forward Characteristics
10000
1000
100
1.2
100
10
1
T
= 25°C
T
= 25°C
A
T = 25°C
A
A
f = 25Hz
I
= 20µA
R
C
= 0µF
OUT
0.8
0.4
0
I
= 20µA
R
C
= 0.033µF
OUT
I
= 100µA
= 0.33µF
10
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
0.1Hz to 10Hz Noise
Response Time
Response Time
40
30
T
R
= –40°C TO 85°C
= 20µA
A
6V
4V
2V
0V
6V
4V
2V
0V
I
20
10
10V
0V
10V
0V
0
–10
–20
–30
–40
1634-4 G07
1634-2.5 G08
IR = 20µA
COUT = 0.1µF
IR = 20µA
COUT = 0
500µs/DIV
20ms/DIV
40 50
0
10 20 30
60 70 80
TIME (SEC)
1634-4 G06
8
LT1634
U W
5V TYPICAL PERFOR A CE CHARACTERISTICS
Reverse Voltage Change
vs Current
Reverse Characteristics
Temperature Drift
20
16
12
8
8
5
4
3
2
1
0
T
= –40°C TO 85°C
T
= –40°C TO 85°C
20µA
A
A
100µA
200µA
500µA
1mA
6
4
2
0
–2
–4
–6
4
0
–8
0
2
3
4
5
6
1
–40 –20
0
20
40
60
80
0.01
0.1
1
10
100
REVERSE VOLTAGE (V)
REVERSE CURRENT (mA)
TEMPERATURE (°C)
1634-5 G03
1634-5 G01
1634-5 G02
Reverse Dynamic Impedance
Dynamic Impedance vs Frequency
Forward Characteristics
1.2
10000
1000
100
100
10
1
T
A
= 25°C
T
= 25°C
T
= 25°C
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
1
R
C
= 0µF
OUT
0.1
0.1
0.1
0.01
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
Response Time
Response Time
0.1Hz to 10Hz Noise
40
30
T
R
= –40°C TO 85°C
= 20µA
A
6V
4V
2V
0V
6V
4V
I
2V
0V
20
10
10V
0V
10V
0V
0
–10
–20
–30
–40
1634-5 G07
1634-5 G08
I
R = 20µA
IR = 20µA
COUT = 0
500µs/DIV
20ms/DIV
COUT = 0.1µF
40 50
10 20 30
TIME (SEC)
0
60 70 80
1634-5 G06
9
LT1634
U
W U U
APPLICATIONS INFORMATION
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 opera-
tion 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 current
for the LT1634.
V
≥ 10.5V
IN
V
– 1.25V
10µA
OUT
R
=
B
+
V
OUT
LT1495
LT1634-1.25
1.5V TO 10V
R1
50k TO 1.75M
–
R2
250k
1634 F01
Figure 1. Adjustable Output Voltage Reference
U
TYPICAL APPLICATIONS
Reference for Micropower A/D Converter
5V
V
18k
LTC1286
IN
1
2
3
4
8
7
6
5
5V
V
V
CC
REF
0.1µF
+IN
–IN
CLK
0.1µF
µC/µP
LT1634-4.096
D
SERIAL
OUT
INTERFACE
GND CS/SHDN
1634 TA03
The LT1634-5 Generates the LTC1448 Dual 12-Bit
DAC’s Reference and Supply Voltage
7.5V TO 12V
3.48k
LTC1448
1
2
3
4
8
7
6
5
V
CLK
V
OUTB
OUTB
µC/µP
SERIAL
INTERFACE
D
IN
V
CC
0.1µF
LT1634-5
CS/LD
REF
GND
OUTA
V
V
OUTA
0.1µF
1634 TA04
10
LT1634
U
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)
8
7
6
5
0.040 ± 0.006
(1.02 ± 0.15)
0.034 ± 0.004
(0.86 ± 0.102)
0.007
(0.18)
0° – 6° TYP
0.118 ± 0.004**
(3.00 ± 0.102)
SEATING
PLANE
0.192 ± 0.004
(4.88 ± 0.10)
0.012
(0.30)
REF
0.021 ± 0.006
(0.53 ± 0.015)
0.006 ± 0.004
(0.15 ± 0.102)
0.0256
(0.65)
TYP
MSOP (MS8) 1197
1
2
3
4
*
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
S8 Package
8-Lead Plastic Small Outline (Narrow 0.150)
(LTC DWG # 05-08-1610)
0.189 – 0.197*
(4.801 – 5.004)
0.010 – 0.020
(0.254 – 0.508)
7
5
8
6
× 45°
0.053 – 0.069
(1.346 – 1.752)
0.004 – 0.010
(0.101 – 0.254)
0.008 – 0.010
(0.203 – 0.254)
0°– 8° TYP
0.150 – 0.157**
(3.810 – 3.988)
0.228 – 0.244
(5.791 – 6.197)
0.016 – 0.050
0.406 – 1.270
0.050
(1.270)
TYP
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
SO8 0996
**DIMENSION DOES NOT INCLUDE INTERLEAD FLASH. INTERLEAD
FLASH SHALL NOT EXCEED 0.010" (0.254mm) PER SIDE
1
3
4
2
Z Package
3-Lead Plastic TO-92 (Similar to TO-226)
(LTC DWG # 05-08-1410)
0.180 ± 0.005
(4.572 ± 0.127)
0.060 ± 0.005
0.060 ± 0.010
(1.524 ± 0.254)
(1.524± 0.127)
DIA
0.90
(2.286)
NOM
0.140 ± 0.010
(3.556 ± 0.127)
0.180 ± 0.005
(4.572 ± 0.127)
Z3 (TO-92) 0695
5°
NOM
10° NOM
0.500
(12.70)
MIN
0.050
(1.270)
MAX
UNCONTROLLED
LEAD DIMENSION
0.016 ± 0.003
0.015 ± 0.002
(0.406 ± 0.076)
(0.381 ± 0.051)
0.050 ± 0.005
(1.270 ± 0.127)
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-
tationthattheinterconnectionofitscircuitsasdescribedhereinwillnotinfringeonexistingpatentrights.
11
LT1634
TYPICAL APPLICATIONS
U
Single Cell Li-Ion Battery Supervisory Circuit (IQ = 20µA)
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
LT1634-1.25
1.25M
0.1%
R4
1.25M
0.1%
1634 TA05
D1, D2: 1N458
R1 TO R4: CAR6 SERIES IRC (512) 992-7900
Micropower Voltage and Current Reference
R1 TO R3:
MAR5 SERIES, IRC
(512) 992-7900
R3
2 AAA
ALKALINE
CELLS
R4
249k
24k
0.1%
5%
–
+
ZTX214C
1/2 LT1495
1/2 LT1495
R1
200k
0.1%
R2
1M
0.1%
+
–
LT1634
1.25V
I
= 1µA
COM
V
OUT
= 1.5V
OUT
1634 TA06
RELATED PARTS
PART NUMBER
DESCRIPTION
COMMENTS
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
1.5µA Max Supply Current, 100pA Max I
OS
LTC1540
Nanopower Comparator with Reference
600nA Max Supply Current, 2% 1.182V Reference,
MSOP and SO-8 Packages
1634fa LT/TP 0698 2K REV A • PRINTED IN USA
12 LinearTechnology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
●
●
(408)432-1900 FAX:(408)434-0507 www.linear-tech.com
LINEAR TECHNOLOGY CORPORATION 1998
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