LM285S8-2.5#PBF [Linear]
IC 1-OUTPUT TWO TERM VOLTAGE REFERENCE, 2.5 V, PDSO8, 0.150 INCH, PLASTIC, SOP-8, Voltage Reference;型号: | LM285S8-2.5#PBF |
厂家: | Linear |
描述: | IC 1-OUTPUT TWO TERM VOLTAGE REFERENCE, 2.5 V, PDSO8, 0.150 INCH, PLASTIC, SOP-8, Voltage Reference 电源电路 参考电压源 光电二极管 |
文件: | 总4页 (文件大小:170K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
LM185-2.5/
LM285-2.5/LM385-2.5
Micropower Voltage
Reference
U
DESCRIPTIO
EATURE
S
F
■
■
■
■
20µA to 20mA Operating Range
Guaranteed 1% Initial Voltage Tolerance
Guaranteed 1Ω Dynamic Impedance
Very Low Power Consumption
The LM185-2.5 is a two-terminal band gap reference
diode that has been designed for applications which
require precision performance with micropower opera-
tion. The device provides guaranteed operation specifica-
tions at currents as low as 20µA. The nominal voltage is
2.5V with both 1% and 2% tolerances available. Some
additional features are: maximum dynamic impedance of
1Ω, low noise and excellent stability over time and tem-
perature. The advanced design, processing and testing
techniques make Linear’s LM185-2.5 a superior choice
over previous designs. A circuit for cold junction compen-
sation of a thermocouple is shown below.
O U
PPLICATI
S
A
■
■
■
■
■
Portable Meter References
Portable Test Instruments
Battery-Operated Systems
Panel Meters
Current Loop Instrumentation
For applications requiring guaranteed temperature drift,
see the LT1034 data sheet.
U
O
TYPICAL APPLICATI
Thermocouple Cold Junction Compensator
Reverse Voltage Change
16
I
Q
≈ 50µA
–55°C ≤ T ≤ +125°C
A
V
IN
16k
1M
12
8
R
SET
LM334
2 MERCURY
CELLS 2.6V
100k W.W.
ZERO
–
V
2k
LM385-2.5
4
950Ω
450Ω
10k ADJUST
FOR 12.17mV
AT 25°C
0
ACROSS 450Ω
+
–
–4
0.01
TYPE K
0.1
1
10
100
METER
LM185-2.5 TA01
REVERSE CURRENT (mA)
LM185-2.5 TA02
1
LM185-2.5/
LM285-2.5/LM385-2.5
W W W
U
ABSOLUTE AXI U RATI GS
Reverse Breakdown Current ................................ 30mA
Forward Current................................................... 10mA
Operating Temperature Range
Storage Temperature Range
LM185-2.5 .................................... –65°C to 150°C
LM285-2.5 .................................... –65°C to 150°C
LM385-2.5 .................................... –65°C to 150°C
Lead Temperature (Soldering, 10 sec.)................ 300°C
LM185-2.5 ..................................... –55°C to 125°C
LM285-2.5 ...................................... –40°C to 85°C
LM385-2.5 ........................................... 0°C to 70°C
W
U
/O
PACKAGE RDER I FOR ATIO
ORDER PART
ORDER PART
NUMBER
ORDER PART
NUMBER
TOP VIEW
NUMBER
BOTTOM VIEW
BOTTOM VIEW
NC
NC
1
2
3
4
8
7
6
5
LM285S8-2.5
LM385S8-2.5
LM385BS8-2.5
3
2
1
LM285Z-2.5
LM385Z-2.5
LM385BZ-2.5
(NOTE 2)
LM185H-2.5
LM285H-2.5
LM385H-2.5
LM385BH-2.5
(NOTE 2)
NC
1
2
NC
NC
(DO NOT
USE)
PART MARKING
Z PACKAGE
H PACKAGE
2-LEAD TO-46 METAL CAN
3-LEAD TO-92 PLASTIC
S8 PACKAGE
8-LEAD PLASTIC SO
2852
3852
3852B
LM185-2.5 PO02
LM185-2.5 PO01
LM185-2.5 PO03
ELECTRICAL CHARACTERISTICS (See Note 1)
LM385-2.5/385B-2.5
MIN TYP MAX
LM185-2.5/285-2.5
SYMBOL PARAMETER
CONDITIONS
T = 25°C, 20µA ≤ I ≤ 20mA
MIN
TYP
MAX
UNITS
V
Z
Reverse Breakdown Voltage
A
R
LM185-2.5/285-2.5
LM385-2.5
LM385B-2.5 (Note 2)
2.462
2.500 2.538
20
V
V
V
2.425 2.500 2.575
2.462 2.500 2.538
∆V
∆Temp
Average Temperature Coefficient
Minimum Operating Current
20µA ≤ I ≤ 20mA (Note 2)
20
ppm/°C
Z
R
I
T
≤ T ≤ T
MAX
●
●
●
●
8
20
8
20
µA
MIN
MIN
A
∆V
Reverse Breakdown Voltage
Change With Current
20µA ≤ I ≤ 1mA
R
Z
∆I
T = 25°C
1.0
1.5
2.0
2.5
mV
mV
R
A
T
≤ T ≤ T
MIN
A MAX
1mA ≤ I ≤ 20mA
R
T = 25°C
10
20
20
25
mV
mV
A
T
≤ T ≤ T
MIN
A MAX
r
Z
Reverse Dynamic Impedance
I = 100µA (Note 3)
R
T = 25°C
0.2
0.6
1.5
0.4
1.0
1.5
Ω
Ω
A
T
≤ T ≤ T
MIN
A MAX
e
Wide Band Noise (RMS)
Long Term Stability
10Hz ≤ f ≤ 10kHz, I = 100µA
120
20
120
20
µV
n
R
∆V
T = 25°C ± 0.1°C, I = 100µA
ppm/kHr
Z
A
R
∆Time
The
range.
●
denotes specifications which apply over the operating temperature
Note 2: For very low initial tolerance, consult LT1004 data sheet. The
LT1004 is a low cost, pin for pin substitution device. For guaranteed
temperature coefficient consult the LT1034-2.5 data sheet.
Note 1: All specifications are for T = 25°C unless otherwise noted. For
A
the LM185-2.5 T
= –55°C and T
= 85°C. For LM385-2.5, T
= 125°C. For LM285-2.5, T
=
Note 3: Guaranteed but not tested.
MIN
MAX
MIN
–40°C and T
= 0°C and T = 70°C.
MAX
MIN
MAX
2
LM185-2.5/
LM285-2.5/LM385-2.5
U W
TYPICAL PERFOR A CE CHARACTERISTICS
Reverse Characteristics
Forward Characteristics
Temperature Drift
2.525
1.6
1.2
100
10
1
T
= 25°C
–55°C TO 125°C
A
2.520
2.515
2.510
2.505
2.500
2.495
2.490
2.485
2.480
0.8
0.4
0
0.1
0
0.5
1.0
1.5
2.0
2.5
3.0
0.01
0.1
1
10
100
85
105 125
–55 –35 –15
5
25 45 65
REVERSE VOLTAGE (V)
FORWARD CURRENT (mA)
TEMPERATURE (°C)
LM185-2.5 • TPC02
LM185-2.5 • TPC01
LM185-2.5 • TPC03
Reverse Dynamic Impedance
Reverse Dynamic Impedance
Noise Voltage
1000
100
10
1400
1200
10k
1k
f = 25Hz
–55°C TO 125°C
T
I
= 25°C
= 100µA
A
R
1000
800
600
400
200
0
100
10
1
1
0.1
0.1
0.01
0.1
1
10
100
10
100
1k
10k
100k
10
100
1k
10k
100k
1M
REVERSE CURRENT (mA)
FREQUENCY (Hz)
FREQUENCY (Hz)
LM185-2.5 • TPC05
LM185-2.5M • TPC06
LM185-2.5 • TPC05
Filtered Output Noise
Response Time
120
100
80
60
40
20
0
100mA
R
4.0
3.0
2.0
1.0
0
C
OUTPUT
24k
V
V
OUT
IN
RC LOW PASS
10k
5V
0
INPUT
100
100
1k
100k
0
500
TIME (µS)
CUTOFF FREQUENCY (Hz)
LM185-2.5 • TPC07
LM185-2.5 • TPC08
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 circuits as described herein will not infringe on existing patent rights.
3
LM185-2.5/
LM285-2.5/LM385-2.5
W
W
U
O
SCHE ATIC DIAGRA
P CA A L AT
S
TY I L PP IC I
+
+
V
9V
7.5k
Q4
Q13
+
3.7V ≤ V ≤ 30V
200k
R
Q12
Q11
LM334
220k
Q3
Q7
2.7k
2.5V
20pF
20pF
2.5V
LM385-2.5
50k
500k
Q1
600k
Q10
LM385-2.5
Q2
Q5
300k
Q9
REFERENCE FROM
A 9V BATTERY
OPERATION OVER A
WIDE SUPPLY RANGE
Q6
Q8
100k
500Ω
Q14
LM185-2.5 TA03
60k
500k
–
LM185-2.5 SD01
U
PACKAGE DESCRIPTIO Dimensions in inches (millimeters) unless otherwise noted.
H Package, 2-Lead TO-46 Metal Can
Z package, 3-Lead TO-92 Plastic
0.060 ± 0.010
(1.524 ± 0.254)
0.209 – 0.219
(5.309 – 5.537)
0.178 – 0.195
(4.521 – 4.953)
0.140 ± 0.010
(3.556 ± 0.127)
0.080 – 0.100
(2.032 – 2.540)
0.015
(0.381)
MAX
0.500
(12.700)
MIN
10° NOM
0.060 ± 0.005
(1.524± 0.127)
DIA
0.180 ± 0.005
(4.572 ± 0.127)
0.025
(0.635)
MAX
0.90
(2.286)
NOM
0.016 – 0.019
0.180 ± 0.005
(0.406 – 0.483)
(4.572 ± 0.127)
DIA
0.100
(2.540)
TYP
0.050
(1.270)
TYP
0.050
(1.270)
TYP
5°
NOM
0.050
(1.270)
MAX
UNCONTROLLED
LEAD DIA
0.500
(12.79)
MIN
FOR 3-LEAD PACKAGE ONLY
0.020 ± 0.003
(0.508 ± 0.076)
45°
0.028 – 0.048
(0.711 – 1.219)
0.036 – 0.046
(0.914 – 1.168)
0.015 ± 0.02
(0.381 ± 0.051)
0.016 ± 0.03
H3(46) 0592
(0.406 ± 0.076)
0.050 ± 0.005
Z3 1191
(1.270 ± 0.127)
TJMAX
θJA
θJC
TJMAX
θJA
150°C 440°C/W 80°CW
100°C 160°C/W
S8 package, 8-Lead Plastic SOIC
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)
0.228 – 0.244
0.150 – 0.157
(5.791 – 6.197)
(3.810 – 3.988)
0.016 – 0.050
0.406 – 1.270
0.050
(1.270)
BSC
0.014 – 0.019
(0.355 – 0.483)
0°– 8° TYP
S8 0392
TJMAX
θJA
1
2
3
4
150°C 220°C/W
LT/GP 0892 1K REV B
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7487
4
●
●
LINEAR TECHNOLOGY CORPORATION 1992
(408) 432-1900 FAX: (408) 434-0507 TELEX: 499-3977
相关型号:
LM285S8-2.5#TR
IC 1-OUTPUT TWO TERM VOLTAGE REFERENCE, 2.5 V, PDSO8, 0.150 INCH, PLASTIC, SOP-8, Voltage Reference
Linear
LM285S8-2.5#TRPBF
IC 1-OUTPUT TWO TERM VOLTAGE REFERENCE, 2.5 V, PDSO8, PLASTIC, SOIC-8, Voltage Reference
Linear
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