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Details, datasheet, quote on part number:LM385-1.2DM
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Datasheet text preview:
L I N D O C #: 385
LM385/385B
1 . 2 & 2.5V M I C R O P O W E R VOLTA G E REFERENCE
T
HE
I
NFINITE
P
OWER
OF
I
N N O VAT I O N
P
RODUCTION
D
ATA
S
HEET
DESCRIPTION The LM385/385B Micropower Voltage References are two terminal bandgap reference diodes designed and optimized f o r accurate low power operation in p o r t a b l e and other power sensitive s y s t e m s . Operating currents are guaranteed from as low as 15µA up to 20mA for the LM385/385B-1.2, and 20µA u p to 20mA for the LM385/385B-2.5, giving designers a great deal of flexibility in optimizing power consumption, noise and ultimate application performance. As an added feature, the references output impedance is extraordinarily low over the e n t i r e operating range of quiescent currents. This enables an extremely wide dynamic load range with little effect on the overall reference accuracy. The LM385 family is available in fixed 1.2V and 2.5V reference values. Process and circuit design optimization provide for high accuracy with initial tolerance values of 1% for the LM385B-1.2, 2% for the LM385-1.2, 1.5% for the LM385B-2.5, and 3% for the LM385-2.5. Complementing their initial accuracy, the b a n d g a p reference is temperature c o m p e n s a t e d to deliver 20ppm p e r f o r m a n c e over the 0° to 70°C operating temperature range. The LM385 family from Linfinity is a pin-for-pin replacement for the LM385/ 385B family of voltage references.
K E Y F E AT U R E S
s GUARANTEED 1% INITIAL ACCURACY (LM385B-1.2) s GUARANTEED 2.5% INITIAL ACCURACY (LM385-1.2) s GUARANTEED 1.5% INITIAL ACCURACY (LM385B-2.5) s GUARANTEED 3% INITIAL ACCURACY (LM385-2.5) p GUARANTEED 20µA OPERATING CURRENT p LOW TEMPERATURE COEFFICIENT p OPERATING CURRENT OF 20µA TO 20mA p VERY LOW DYNAMIC IMPEDANCE . . . 1
A P P L I C AT I O N S
s p p p PORTABLE METER REFERENCES PORTABLE TEST INSTRUMENTS BATTERY OPERATED SYSTEMS CURRENT LOOP INSTRUMENTATION
PRODUCT HIGHLIGHT
1.2V REFERENCE
5V
M I C R O P O W E R REFERENCE FROM 9 V BA T T E R Y
9V
38k 1.2V LM385-1.2V
200k 2.5V LM385-2.5V
PA C K A G E O R D E R I N F O R M AT I O N TA (°C)
Refer e n c e Voltage
1.2V
Initial Tolerance
±30mV ±12mV ±75mV ±38mV
at DM P-lpsnic SOIC 8i
LM385DM-1.2 LM385BDM-1.2 LM385DM-2.5 LM385BDM-2.5
at LP P-lpsnic TO-92 3i
LM385LP-1.2 LM385BLP-1.2 LM385LP-2.5 LM385BLP-2.5
0 to 70 2.5V
Note: All surface-mount packages are available in Tape & Reel. Append the letter "T" to part number. (i.e. LM385DM-2.5T)
F O R F U R T H E R I N F O R M AT I O N C A L L ( 7 1 4 ) 8 9 8 - 8 1 2 1
Copyright © 1996 Rev. 1.2 7/96
1 1 86 1 WESTERN AVENUE, GARDEN GROVE, CA. 92841
1
PRODUCT DATABOOK 1996/1997
LM385/385B
1.2 & 2.5V MICROPOWER VOLTA G E R E F E R E N C E
P
RODUCTION
D
ATA
S
HEET
A B S O L U T E M A X I M U M R AT I N G S
(Note 1)
PACKAGE PIN OUTS
Reverse Breakdown Current ... 30mA Forward Current ........ 10mA Operating Temperature Range LM385 .. 0°C to 70°C Storage Temperature Range .... -65°C to 150°C Lead Temperature (soldering, 10 seconds) .... 300°C
Note 1. Values beyond which damage may occur. All voltages are specified with respect to ground, and all currents are positive into the specified terminal
N/C N/C N/C ANODE
1. 2. 3. 4.
CATHODE N/C 6 . CATHODE 5 . N/C
8. 7.
DM PACKAGE (Top View)
T H E R M A L DATA
DM PACKAGE: THERMAL RESISTANCE-JUNCTION TO AMBIENT, JA LP PACKAGE: THERMAL RESISTANCE-JUNCTION TO AMBIENT, JA 165ºC/W 165ºC/W
1. ANODE 2. CATHODE 3. N/C
LP PACKAGE (Top View)
The JA numbers are guidelines for the thermal performance of the device/pc-board system. All of the above assume no ambient airflow.
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Copyright © 1996 Rev. 1.2 7/96
PRODUCT DATABOOK 1996/1997
LM385/385B
1.2 & 2.5V M I C R O P O W E R VOLTA G E REFERENCE
P
RODUCTION
D
ATA
S
HEET
ELECTRICAL CHARACTERISTICS
(Unless otherwise specified, these specifications apply to TA = 25ºC. Typ number represents TA = 25ºC value.)
LM385/385B-1.2
Parameter
Reverse Breakdown Voltage Average Temperature Coefficient Minimum Operating Current Reverse Breakdown Voltage Chang with Current Reverse Dynamic Impedance Wide Band Noise (RMS) Long Term Stability LM385 LM385B
Symbol
VZ VZ Temp I MIN e I R rz en VZ Time IMIN IR IMAX IMIN IR IMAX IR = 100µA
Test Conditions
LM385/385B-1.2 Min. Typ. Max.
1.205 1.223 1.235 1.235 20 8 1.260 1.247
Units
V V ppm/°C µA mV mV µV ppm/kHr
VZ IMIN IR 1mA 1mA IR 20mA IR = 100µA IR = 100µA, 10Hz f 10kHz IR = 100µA, TA = 25°C ± 0.1°C
15 1.5 20
1 60 20
LM385/385B-2.5
Parameter
Reverse Breakdown Voltage Average Temperature Coefficient Minimum Operating Current Reverse Breakdown Voltage Chang with Current Reverse Dynamic Impedance Wide Band Noise (RMS) Long Term Stability LM385 LM385B
Symbol
VZ VZ Temp I MIN e I R rz en VZ Time IMIN IR IMAX IMIN IR IMAX IR = 100µA
Test Conditions
LM385/385B-2.5 Min. Typ. Max.
2.425 2.462 2.500 2.500 20 13 2.575 2.538
Units
V V ppm/°C µA mV mV µV ppm/kHr
VZ IMIN IR 1mA 1mA IR 20mA IR = 100µA, f = 20Hz IR = 100µA, 10Hz f 10kHz IR = 100µA, TA = 25°C ± 0.1°C
20 2 20
1 120 20
GRAPH / CURVE INDEX
Characteristic Curves LM385/385B-1.2
FIGURE # 1. 2. 3. 4. 5. 6. 7. RESPONSE TIME REVERSE CHARACTERISTICS FORWARD CHARACTERISTICS TEMPERATURE DRIFT REVERSE VOLTAGE CHANGE REVERSE DYNAMIC IMPEDANCE NOISE VOLTAGE FIGURE # 8. 9.
Characteristic Curves LM385/385B-2.5
RESPONSE TIME REVERSE CHARACTERISTICS
10. FORWARD CHARACTERISTICS 11. TEMPERATURE DRIFT 12. REVERSE DYNAMIC IMPEDANCE 13. NOISE VOLTAGE
Copyright © 1996 Rev. 1.2 7/96
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