LM334Z#PBF Linear Technology, LM334Z#PBF Datasheet

IC CURRENT SOURCE TO92-3

LM334Z#PBF

Manufacturer Part Number
LM334Z#PBF
Description
IC CURRENT SOURCE TO92-3
Manufacturer
Linear Technology
Datasheet

Specifications of LM334Z#PBF

Function
Current Source
Voltage - Input
0.8 ~ 40 V
Current - Output
10mA
Operating Temperature
0°C ~ 70°C
Mounting Type
Through Hole
Package / Case
TO-92-3 (Standard Body), TO-226
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Accuracy
-
Sensing Method
-

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
LM334Z#PBFLM334Z
Manufacturer:
NSC
Quantity:
13
Company:
Part Number:
LM334Z#PBFLM334Z
Manufacturer:
NS
Quantity:
3 651
Company:
Part Number:
LM334Z#PBFLM334Z
Manufacturer:
NSC
Quantity:
200
Company:
Part Number:
LM334Z#PBFLM334Z
Manufacturer:
NSC
Quantity:
200
Company:
Part Number:
LM334Z#PBFLM334Z
Manufacturer:
ST
0
FEATURES
TYPICAL APPLICATIO
APPLICATIO S
, LTC and LT are registered trademarks of Linear Technology Corporation.
1 A to 10mA Operation
0.02%/V Regulation
0.8V to 40V Operating Voltage
Can be Used as Linear Temperature Sensor
Draws No Reverse Current
Supplied in Standard Transistor Packages
Current Mode Temperature Sensing
Constant Current Source for Shunt References
Cold Junction Compensation
Constant-Gain Bias for Bipolar Differential Stage
Micropower Bias Networks
Buffer for Photoconductive Cell
Current Limiter
Remote Temperature Sensor with Voltage Output
226
R
SET
LM234-3
R
U
V
V
+
U
V
IN
10k
5V
R1
10mV/ K
TA01a
DESCRIPTIO
The LM134 is a three-terminal current source designed to
operate at current levels from 1 A to 10mA, as set by an
external resistor. The device operates as a true two-
terminal current source, requiring no extra power connec-
tions or input signals. Regulation is typically 0.02%/V and
terminal-to-terminal voltage can range from 800mV to
40V.
Because the operating current is directly proportional to
absolute temperature in degrees Kelvin, the device will
also find wide applications as a temperature sensor. The
temperature dependence of the operating current is
0.336%/ C at room temperature. For example, a device
operating at 298 A will have a temperature coefficient of
1 A/ C. The temperature dependence is extremely accu-
rate and repeatable. Devices specified as temperature
sensors in the 100 A to 1mA range are the LM134-3,
LM234-3 and the LM134-6, LM234-6, with the dash
numbers indicating 3 C and 6 C accuracies, respec-
tively.
If a zero temperature coefficient current source is re-
quired, this is easily achieved by adding a diode and a
resistor.
Constant Current Source
and Temperature Sensor
500
400
300
200
100
0
Operating Current vs Temperature
0
100
U
OPERATING CURRENT ( A)
R
SET
200
= 226
LM134 Series
300
400
TA01b
500
225
125
25
–75
–175
–275
1

Related parts for LM334Z#PBF

LM334Z#PBF Summary of contents

Page 1

... Current Mode Temperature Sensing Constant Current Source for Shunt References Cold Junction Compensation Constant-Gain Bias for Bipolar Differential Stage Micropower Bias Networks Buffer for Photoconductive Cell Current Limiter , LTC and LT are registered trademarks of Linear Technology Corporation. U TYPICAL APPLICATIO Remote Temperature Sensor with Voltage Output + V R ...

Page 2

LM134 Series ABSOLUTE AXI U RATI GS + – Forward Voltage LM134 ................................................................. 40V LM134-3/LM134-6/LM234-3/ LM234-6/LM334 ................................................. 30V + – Reverse Voltage ........................................ 20V – R Pin to V Voltage.................................................... 5V ...

Page 3

ELECTRICAL CHARACTERISTICS CURRENT SOURCE (Note 2) SYMBOL PARAMETER + I Set Current Error 2.5V SET (Note 3) Ratio of Set Current to – V Current V Minimum Operating Voltage MIN I Average Change in Set Current SET V ...

Page 4

LM134 Series W U TYPICAL PERFOR A CE CHARACTERISTICS Output Impedance 100 1mA 100 1k 10k FREQUENCY (Hz) 134 G01 Transient Response ...

Page 5

U U APPLICATIO S I FOR ATIO Basic Theory of Operation The equivalent circuit of the LM134 is shown in Figure 1. A reference voltage of 64mV is applied to the minus input – with respect to the ...

Page 6

LM134 Series U U APPLICATIO S I FOR ATIO Lead Resistance The sense voltage which determines the operating current of the LM134 is less than 100mV. At this level, thermo- couple or lead resistance effects should be minimized by locating ...

Page 7

U U APPLICATIO S I FOR ATIO The two trims shown in Figure 3 are still intended “one point” temperature calibration, where the zero and the slope are trimmed at a single temperature. The LT1009 reference is ...

Page 8

LM134 Series U TYPICAL APPLICATIO S Higher Output Current V IN 2N2905 R1 C1* R 0.0022 R SET – LM334 V –V IN TA05 *SELECT R1 AND C1 FOR OPTIMUM STABILITY Micropower Bias V IN LM4250 1 A ...

Page 9

U TYPICAL APPLICATIO S Precision 10nA Current Source 15V + V R LM134 R1 – 2. 226k LT1004-1.2 R3 15V – R4 LT1008 100M 10nA O 12 ...

Page 10

LM134 Series PACKAGE DESCRIPTIO 0.209 – 0.219 (5.309 – 5.537) 0.178 – 0.195 (4.521 – 4.953) 0.500 (12.700) MIN REFERENCE PLANE 0.016 – 0.021** (0.406 – 0.533) DIA 0.060 0.005 (1.524 0.127) DIA 0.180 0.005 (4.572 0.127) 0.500 (12.70) MIN ...

Page 11

... FLASH SHALL NOT EXCEED 0.010" (0.254mm) PER SIDE 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. ...

Page 12

... V 8.25k 1% R5** R R3* R2 – LT1009 V LM334 100 2.5V* 1% TA19 *SELECT /583 A REF **SELECT FOR 1.2mA www.linear.com R1 SET – V LM334 –V IN TA18 –16 • R1(R1/V MUST NOT EXCEED SET 134sc LT/CP 1001 1.5K REV C • PRINTED IN USA LINEAR TECHNOLOGY CORPORATION 1991 ...

Related keywords